RENESAS RA2E1 Capacitive Sensor MCU

Capacitive Sensor MCU
Capacitive Kubata Noise Immunity Guide

Nhanganyaya
Iyo Renesas Capacitive Touch Sensor Unit (CTSU) inogona kubatwa neruzha munzvimbo yakatenderedza nekuti inokwanisa kuona shanduko yeminiti mukugona, inogadzirwa neasingadiwe emagetsi masaini (ruzha). Mhedzisiro yeruzha urwu inogona kuenderana neiyo hardware dhizaini. Naizvozvo, kutora matanho ekupikisa pakugadzira stage inotungamira kune CTSU MCU inoenderana neruzha kwezvakatipoteredza uye inoshanda kugadzirwa kwechigadzirwa. Ichi chinyorwa chekushandisa chinotsanangura nzira dzekuvandudza kusadzivirirwa kweruzha kune zvigadzirwa uchishandisa Renesas Capacitive Touch Sensor Unit (CTSU) neIEC's noise immunity standards (IEC61000-4).

Target Device
RX Mhuri, RA Mhuri, RL78 Mhuri MCUs uye Renesas Synergy™ inomisikidza iyo CTSU (CTSU, CTSU2, CTSU2L, CTSU2La, CTSU2SL)

Maitiro akafukidzwa mune ino chinyorwa chekushandisa 

• IEC-61000-4-3
• IEC-61000-4-6

Overview

Iyo CTSU inoyera huwandu hwemagetsi akamira kubva pachaji yemagetsi kana electrode yabatwa. Kana iyo inogoneka yekubata electrode ichichinja nekuda kweruzha panguva yekuyera, iyo yekuchaja ikozvino inochinja, inokanganisa kukosha kwakayerwa. Kunyanya, kuchinja kukuru muhukoshi hwakayerwa kunogona kudarika chikumbaridzo chekubata, zvichiita kuti mudziyo utadze kushanda zvakanaka. Kuchinja kudiki muhukoshi hwakayerwa kunogona kukanganisa maapplication anoda mitsetse. Zivo nezve CTSU capacitive yekubata yekuona maitiro uye dhizaini yebhodhi yakakosha kana uchifunga nezve ruzha kusadzivirirwa kweCTSU capacitive touch system. Isu tinokurudzira kekutanga-nguva vashandisi veCTSU kuti vazvigadzirise ivo neCTSU uye capacitive kubata misimboti nekudzidza anotevera ane hukama magwaro.

• Ruzivo rwekutanga nezve capacitive yekubata yekuona uye CTSU
• Capacitive Touch Mushandisi's Guide yeCapacitive Sensor MCUs (R30AN0424)
• Ruzivo nezve Hardware board dhizaini
  Capacitive Sensor Microcontrollers - CTSU Capacitive Kubata Electrode Dhizaini Yekutungamira (R30AN0389)
• Ruzivo nezve CTSU mutyairi (CTSU module) software
  RA Mhuri Renesas Flexible Software Package (FSP) Bhuku reMushandisi (Web Shanduro - HTML)
  API Reference> Modules> CapTouch> CTSU (r_ctsu)
  RL78 Mhuri CTSU Module Software Integration System (R11AN0484)
  RX Mhuri QE CTSU Module Firmware Integration Technology (R01AN4469)
• Ruzivo nezve touch middleware (TOUCH module) Software
  RA Mhuri Renesas Flexible Software Package (FSP) Bhuku reMushandisi (Web Shanduro - HTML)
  API Reference> Modules> CapTouch> Bata (rm_touch)
  RL78 Family TOUCH Module Software Integration System (R11AN0485)
  RX Mhuri QE Kubata Module Firmware Integration Technology (R01AN4470)
• Ruzivo maererano neQE yeCapacitive Touch (capacitive touch application yekusimudzira chishandiso)
  Kushandisa QE neFSP Kugadzira Capacitive Touch Applications (R01AN4934)
  Kushandisa QE uye FIT Kugadzira Capacitive Touch Applications (R01AN4516)
  RL78 Mhuri Ichishandisa QE neSIS Kugadzira Capacitive Touch Applications (R01AN5512)
  RL78 Mhuri Ichishandisa Iyo Standalone Version yeQE Kugadzira Capacitive Touch Applications (R01AN6574)

Mhando dzeRuzha uye Countermeasures

EMC Maitiro
Tafura 2-1 inopa rondedzero yeEMC zviyero. Ruzha runogona kupesvedzera mashandiro nekupinda musystem kuburikidza nemagapu emhepo uye tambo dzekubatanidza. Rondedzero iyi inoburitsa IEC 61000 zviyero se examples kutsanangura marudzi evagadziri veruzha vanofanirwa kuziva kuti ive nechokwadi chekuita kwakakodzera kwemasisitimu anoshandisa iyo CTSU. Ndokumbira utarise kune yazvino vhezheni yeIEC 61000 kuti uwane rumwe ruzivo.

Tafura 2-1 EMC Testing Standards (IEC 61000)

Test Description	Overview	Standard
Radiated Immunity Test	Kuedza kusadzivirirwa kune yakakwira-frequency RF ruzha	IEC61000-4-3
Yakaitwa Immunity Test	Kuedza kusadzivirirwa kune yakaderera-frequency RF ruzha	IEC61000-4-6
Electrostatic Discharge Test (ESD)	Muedzo wekudzivirira kune electrostatic discharge	IEC61000-4-2
Magetsi Anokurumidza Kupfuura/Kuputika Muedzo (EFT/B)	Muedzo wekuzvidzivirira kune inoenderera mberi pulsed yenguva pfupi mhinduro yakaunzwa mumatambo emagetsi emagetsi, nezvimwe.	IEC61000-4-4

Tafura 2-2 inodonongodza maitiro ekuyedzwa kwekudzivirira. Maitiro ekuita anotsanangurwa EMC kusadzivirirwa bvunzo, uye mhedzisiro inotongwa zvichienderana nekushanda kwemidziyo panguva yekuyedzwa (EUT). Maitiro ekuita akafanana kune yega yega mwero.

Tafura 2-2 Performance Criteria yeImmunity Testing

Performance Criterion	Tsanangudzo
A	Midziyo icharamba ichishanda sezvakarongwa panguva uye mushure mebvunzo. Hapana kuderedzwa kwekuita kana kurasikirwa kwebasa kunotenderwa pazasi pedanho rekuita rakatsanangurwa nemugadziri kana mudziyo uchishandiswa sezvaunotarisirwa.
B	Midziyo icharamba ichishanda sezvakarongwa panguva uye mushure mebvunzo. Hapana kuderedzwa kwekuita kana kurasikirwa kwebasa kunotenderwa pazasi pedanho rekuita rakatsanangurwa nemugadziri kana mudziyo uchishandiswa sezvaunotarisirwa. Panguva yekuedzwa, kuderedzwa kwekuita kunobvumidzwa. Hapana shanduko yemamiriro ekushanda chaiwo kana data yakachengetwa inobvumidzwa.
C	Kurasikirwa kwekanguva kwekushanda kunobvumirwa, chero basa racho richizvigadzirisa pachako kana kuti rinogona kudzorerwa nekushanda kwekutonga.

RF Noise Countermeasures

Ruzha rweRF runoratidza mafungu emagetsi eredhiyo anoshandiswa neterevhizheni neredhiyo kutepfenyura, nharembozha, uye zvimwe midziyo yemagetsi. Ruzha rweRF runogona kupinda muPCB kana kuti inogona kupinda kuburikidza netambo yemagetsi uye mamwe tambo dzakabatana. Noise countermeasures dzinofanirwa kuitwa pabhodhi kune yekutanga uye padanho rehurongwa hwekupedzisira, senge kuburikidza netambo yemagetsi. Iyo CTSU inoyera capacitance nekuishandura kuita chiratidzo chemagetsi. Shanduko mukugona nekuda kwekubata idiki zvakanyanya, saka kuve nechokwadi chekuonekwa kwekubata, pini ye sensor uye magetsi eiyo sensor pachayo inofanirwa kuchengetedzwa kubva kuRF ruzha. Maedzo maviri ane akasiyana bvunzo frequency anowanikwa kuyedza RF ruzha kusadzivirirwa: IEC 61000-4-3 uye IEC 61000-4-6.

IEC61000-4-3 ndeye radiated immune immune bvunzo uye inoshandiswa kuongorora kusadzivirirwa kweruzha nekuisa zvakananga chiratidzo kubva kuradio-frequency electromagnetic field kuenda kuEUT. Iyo RF electromagnetic munda inotangira pa80MHz kusvika 1GHz kana pamusoro, iyo inoshandura kune wavelengths yeanenge 3.7m kusvika 30cm. Sezvo iyi wavelength uye kureba kwePCB zvakafanana, iyo pateni inogona kuita senge antenna, ichikanganisa mhedzisiro yekuyera kweCTSU. Mukuwedzera, kana urefu hwe wiring kana parasitic capacitance yakasiyana kune imwe neimwe yekubata electrode, iyo yakakanganiswa frequency inogona kusiyana kune imwe neimwe terminal. Tarisa Tafura 2-3 kune ruzivo nezve radiated immune immune bvunzo.

Tafura 2-3 Radiated Immunity Test

Frequency Range	Chikamu Chekuedza	Test Field Strength
80MHz-1GHz Kusvikira ku2.7GHz kana kusvika ku6.0GHz, zvichienderana neshanduro yebvunzo	1	1 V/m
	2	3 V/m
	3	10 V/m
	4	30 V/m
	X	Zvinotsanangurwa mumwe nemumwe

IEC 61000-4-6 inoitwa bvunzo yekudzivirira uye inoshandiswa kuongorora mafambiro ari pakati pe150kHz ne80MHz, yakaderera pane iyo yeradiated immune immune bvunzo. Iyi frequency band ine wavelength yemamita akati wandei kana kupfuura, uye wavelength ye150 kHz inosvika 2 km. Nekuti zvakaoma kuisa zvakananga RF electromagnetic ndima yehurefu uhwu paEUT, chiratidzo chekuyedza chinoiswa kune tambo yakanangana neEUT kuti iongorore maitiro emafungu epasi-frequency. Shorter wavelengths inonyanya kukanganisa magetsi uye tambo dzechiratidzo. For example, kana frequency bhendi ichikonzera ruzha runokanganisa tambo yemagetsi uye magetsi ekupa voltage destabilizes, iyo CTSU kuyerwa mhedzisiro inogona kukanganiswa neruzha pamapini ese. Tafura 2-4 inopa ruzivo rweyakaitwa bvunzo yekudzivirira.

Tafura 2-4 Inoitwa Immunity Test

Frequency Range	Chikamu Chekuedza	Test Field Strength
150kHz-80MHz	1	1 Vs
	2	3 Vs
	3	10 Vs
	X	Zvinotsanangurwa mumwe nemumwe

Mune AC magetsi emagetsi dhizaini uko iyo system GND kana MCU VSS terminal isina kubatana kune yekutengesa magetsi epasi terminal, inoitiswa ruzha inogona kupinda yakananga mubhodhi seyakajairwa modhi ruzha, izvo zvinogona kukonzera ruzha mumhedzisiro yekuyerwa kweCTSU kana bhatani riripo. kubatwa.

Mufananidzo 2-1 unoratidza Common Mode Noise Entrance Path uye Mufananidzo 2-2 unoratidza Hukama huri pakati peCommon Mode Noise uye Measurement Current. Kubva mubhodhi GND (B-GND) maonero, yakajairika modhi ruzha runoratidzika kunge ruchichinjika sezvo ruzha rwakaiswa pamusoro penyika GND (E-GND). Pamusoro pezvo, nekuti chigunwe (muviri wemunhu) unobata electrode yekubata (PAD) inosanganiswa neE-GND nekuda kwekukanganisa kugona, common mode ruzha runofambiswa uye rwunoita seruchichinja-chinja zvakafanana neE-GND. Kana iyo PAD ikabatwa panguva ino, ruzha (VNOISE) rwunogadzirwa neruzha rwemodhi yakajairwa rinoiswa kune capacitance Cf inoumbwa nemunwe uye PAD, zvichiita kuti yekuchaja ikozvino yakayerwa neCTSU ichinje. Shanduko mukuchaja ikozvino dzinoonekwa semadhijitari ane ruzha rwakanyanya. Kana iyo yakajairwa modhi ruzha ichisanganisira frequency zvikamu zvinofanana nedhiraivha pulse frequency yeCTSU uye maharmonics ayo, mhedzisiro yekuyera inogona kuchinjika zvakanyanya. Tafura 2-5 inopa rondedzero yezviyero zvinodikanwa pakuvandudza RF ruzha kusadzivirirwa. Mazhinji maitiro ekupikisa akajairika pakuvandudza kweaviri eradiated immune uye inoitiswa kusadzivirirwa. Ndokumbira utarise chikamu chechitsauko chimwe nechimwe chinoenderana sezvakanyorwa padanho rega rega rekusimudzira.

Tafura 2-5 Rondedzero Yezviyero Zvinodiwa Kuti RF Noise Immunity Kuvandudzwa.

Danho rekuvandudza	Countermeasures Inodiwa Panguva Yekugadzira	Zvikamu Zvinoenderana
MCU sarudzo (CTSU basa sarudzo)	Kushandisa MCU yakamisikidzwa neCTSU2 inokurudzirwa kana ruzha kusadzivirirwa kuri pamberi. · Gonesa CTSU2 anti-noise countermeasure mabasa: ¾ Multi-frequency kuyerwa ¾ Shield inoshanda ¾ Seta kune isiri-yeyero chiteshi kubuda kana uchishandisa inoshanda nhovo   Or · Gonesa CTSU anti-noise countermeasure mabasa: ¾ Random phase shift function ¾ Yakakwira-frequency yekudzikisa ruzha basa	3.3.1   Multi-frequency Measurement 3.3.2    Active Shield 3.3.3    Isiri-yeyero Channel Output Selection       3.2.1   Random Phase Shift Basa 3.2.2    High-frequency Noise Kuderedza Basa (kupararira spectrum function)
Hardware dhizaini	· Dhizaini yebhodhi uchishandisa yakakurudzirwa electrode pateni   · Shandisa tsime remagetsi kune yakaderera-ruzha kubuda · GND pateni dhizaini kurudziro: mune yakadzika sisitimu shandisa zvikamu zveyakajairwa modhi ruzha kuenzanisa       · Deredza ruzha rwekupinda nhanho papini ye sensor nekugadzirisa iyo damping resistor value. · Nzvimbo damping resistor pamutsetse wekutaurirana · Dhizaini uye isa yakakodzera capacitator pane MCU magetsi emagetsi tambo	4.1.1 Bata Electrode Pattern Designs 4.1.2.1  Voltage Supply Design 4.1.2.2  GND Patani Dhizaini 4.3.1 Common Mode Sefa 4.3.4 Zvikonzero zveGND Shield uye Electrode Distance     4.2.1  TS Pin Damping Resistance 4.2.2  Digital Signal Noise 4.3.4 Zvikonzero zveGND Shield uye Electrode Distance
Kuitwa kwesoftware	Gadzirisa iyo software sefa kuti uderedze maitiro eruzha pane akayerwa kukosha · IIR inofamba pakati (inoshanda kune dzakawanda dzisina ruzha kesi) * FIR inofamba pakati (yenguva yakatarwa ruzha)	5.1   IIR Sefa   5.2  FIR Sefa

ESD Noise (electrostatic discharge)

Electrostatic discharge (ESD) inogadzirwa kana zvinhu zviviri zvinochaja zvakasangana kana zviri padhuze. Simba remagetsi rakaunganidzwa mukati memuviri wemunhu rinogona kusvika maelectrode pachigadzirwa kunyangwe kuburikidza nepamusoro. Zvichienderana nehuwandu hwesimba remagetsi rinoiswa kune electrode, iyo CTSU kuyerwa mibairo inogona kukanganiswa, zvichikonzera kukanganisa kumudziyo wacho. Naizvozvo, matanho ekupikisa anofanirwa kuunzwa padanho rehurongwa, senge zvidziviriro pabhodhi redunhu, kuvharika kwebhodhi, uye dzimba dzekudzivirira dzemudziyo. Iyo IEC 61000-4-2 yakajairwa inoshandiswa kuyedza ESD kusadzivirirwa. Tafura 2-6 inopa ESD bvunzo ruzivo. Icho chinangwa chekushandisa uye zvivakwa zvechigadzirwa zvinosarudza inodiwa bvunzo nhanho. Kuti uwane rumwe ruzivo, tarisa iyo IEC 61000-4-2 yakajairwa. Kana ESD yasvika pakubata electrode, ipapo inogadzira mutsauko ungangoita wekV yakati wandei. Izvi zvinogona kukonzera pulse ruzha kuti riitike muCTSU yakayerwa kukosha, kuderedza kuyerwa kwechiyero, kana kumisa kuyerwa nekuda kwekuonekwa kwekudarika.tage kana overcurrent. Ziva kuti semiconductor zvishandiso hazvina kugadzirwa kumirisana nekushandisa zvakananga kweESD. Naizvozvo, iyo ESD bvunzo inofanirwa kuitwa pachigadzirwa chakapedzwa nebhodhi rakachengetedzwa nekesi yemuchina. Countermeasures akaunzwa pabhodhi pachayo matanho akatadza kuchengetedza dunhu mune isingawanzo kuitika iyo ESD inoita, nekuda kwechimwe chikonzero, kupinda mubhodhi.

Tafura 2-6 ESD Muedzo

Chikamu Chekuedza	Kwayedza Voltage
	Bata Discharge	Air Discharge
1	2 kV	2 kV
2	4 kV	4 kV
3	6 kV	8 kV
4	8 kV	15 kV
X	Zvinotsanangurwa mumwe nemumwe	Zvinotsanangurwa mumwe nemumwe

EFT Noise (Electrical Fast Transients)
Zvigadzirwa zvemagetsi zvinogadzira chiitiko chinodaidzwa kuti Electrical Fast Transients (EFT), senge yekumashure electromotive simba kana simba richibatidzwa nekuda kwekumisikidzwa kwemukati kwesimba rekupa kana ruzha rwekutaura pane relay switch. Munzvimbo umo zvigadzirwa zvemagetsi akawanda zvakabatanidzwa neimwe nzira, senge pamatambo emagetsi, ruzha urwu runogona kufamba kuburikidza nematambo emagetsi uye kukanganisa kushanda kwemimwe michina. Kunyangwe tambo dzemagetsi nemitsara yemagetsi ezvigadzirwa zvemagetsi zvisina kubatirwa mutambo yemagetsi yakagovaniswa inogona kukanganiswa kuburikidza nemhepo nekungova pedyo netambo dzemagetsi kana mitsara yemasaini yeruzha. Iyo IEC 61000-4-4 yakajairwa inoshandiswa kuyedza EFT kusadzivirirwa. IEC 61000-4-4 inoongorora kusadzivirirwa nekupinza masaini eEFT nguva nenguva muEUT simba uye mitsara yemasaini. Ruzha rweEFT runoburitsa kupuruzira kweperiodic mumhedzisiro yekuyerwa kweCTSU, izvo zvinogona kudzikisa kurongeka kwemhedzisiro kana kukonzera kubatwa kwenhema. Tafura 2-7 inopa EFT/B (Magetsi Anokurumidza Kupfuura Kuputika) ruzivo rwebvunzo.

Tafura 2-7 EFT/B Muedzo

Chikamu Chekuedza	Vhura Circuit Test Voltage (peak)		Pulse repetition frequency (PRF)
	Magetsi Line/Ground Wire	Chiratidzo/Kudzora Mutsetse
1	0.5 kV	0.25 kV	5kHz kana 100kHz
2	1 kV	0.5 kV
3	2 kV	1 kV
4	4 kV	2 kV
X	Zvinotsanangurwa mumwe nemumwe		Zvinotsanangurwa mumwe nemumwe

CTSU Noise Countermeasure Mabasa

MaCTSU akashongedzerwa neruzha countermeasure mabasa, asi kuwanikwa kwebasa rega rega kunosiyana zvichienderana neshanduro yeMCU neCTSU yauri kushandisa. Gara uchisimbisa iyo MCU neCTSU shanduro usati wagadzira chigadzirwa chitsva. Ichi chitsauko chinotsanangura misiyano muruzha countermeasure mabasa pakati pega vhezheni yeCTSU.

Kuyera Misimboti uye Mhedzisiro Yeruzha
Iyo CTSU inodzokorora kuchaja uye kuburitsa kakawanda kune yega kuyerwa kutenderera. Mhedzisiro yechiyero chechaji yega yega kana yekuburitsa ikozvino inounganidzwa uye yekupedzisira kuyerwa mhedzisiro inochengetwa murejista. Munzira iyi, nhamba yezviyero pane imwe nguva yeyuniti inogona kuwedzerwa nekuwedzera dhiraivha pulse frequency, nekudaro ichivandudza iyo dynamic renji (DR) uye nekuona yakanyanya kutarisisa CTSU zviyero. Kune rumwe rutivi, ruzha rwekunze runokonzeresa shanduko mukuchaja kana kuburitsa ikozvino. Munzvimbo inogadzirwa ruzha rwenguva nenguva, mhedzisiro yekuyera yakachengetwa muSensor Counter Rejista inogadziriswa nekuda kwekuwedzera kana kuderera kwehuwandu hwezvino mune imwe nzira. Zvakadai zvine chekuita neruzha zvinopedzisira zvadzikisira kuyerwa kwechiyero. Mufananidzo 3-1 unoratidza mufananidzo wekuchaja kukanganisa ikozvino nekuda kweruzha rwe periodic. Iwo mafrequency anoita seperiodic ruzha ndeaya anoenderana ne sensor drive pulse frequency uye yayo harmonic ruzha. Zvikanganiso zvekuyera zvakakura kana kukwira kana kudonha kweruzha rweperiodic kwabatanidzwa neSW1 ON nguva. Iyo CTSU inoshongedzerwa nehardware-level ruzha countermeasure mabasa sedziviriro kubva kune iyi ruzha rwenguva.

CTSU1
CTSU1 inoshongedzerwa neasina kurongeka nhanho yekuchinja basa uye yakakwirira-frequency yekudzikisa ruzha basa (kupararira spectrum basa). Mhedzisiro pane yakayerwa kukosha inogona kudzikiswa kana iyo yakakosha harmonics ye sensor drive pulse frequency uye ruzha frequency match. Iyo yakanyanya kuseta kukosha kweiyo sensor drive pulse frequency ndeye 4.0MHz.

Random Phase Shift Basa
Mufananidzo 3-2 inoratidza mufananidzo weruzha desynchronization uchishandisa yakasarudzika chikamu chekuchinja basa. Nekushandura chikamu che sensor drive pulse ne 180 degrees panguva isina kurongeka, iyo unidirectional kuwedzera / kuderera kwezvino nekuda kweruzha rweperiodic inogona kurongeka uye yakatsetseka kuti ivandudze kuyerwa kwechiyero. Iri basa rinogara rakagoneswa muCTSU module uye TOUCH module.

Yakakwira-frequency Noise Reduction Basa (kupararira spectrum basa)
Iyo yepamusoro-frequency yekudzikisa ruzha basa inoyera iyo sensor drive pulse frequency ine nemaune yakawedzera kutaura. Inobva yadzora nzvimbo yekuwiriranisa neruzha runopindirana kuparadzira nhongonya yechikanganiso chekuyera nekuvandudza kuyerwa kwechiyero. Iri basa rinogara richigoneswa muCTSU module inobuda uye TOUCH module inobuda nekodhi kodhi.

CTSU2

Multi-frequency Measurement
Multi-frequency kuyerwa kunoshandisa akawanda sensor drive pulse frequencies ine ma frequency akasiyana. Iyo yekuparadzira spectrum haishandiswe kudzivirira kupindira pane yega yega drive pulse frequency. Iri basa rinonatsiridza kusadzivirirwa kubva kunoitwa uye neradiated RF ruzha nekuti inoshanda kupokana neinonzwisiswa ruzha pane sensor drive pulse frequency, pamwe neruzha rwunounzwa kuburikidza nekubata electrode pateni. Mufananidzo 3-3 unoratidza mufananidzo wekuti zviyero zvakayerwa zvinosarudzwa sei mukuyerwa kwe-multi-frequency, uye Mufananidzo 3-4 unoratidza mufananidzo wekuparadzanisa mafambiro eruzha nenzira imwechete yekuyera. Multi-frequency measurement inorasa mibairo yekuyera yakakanganiswa neruzha kubva kuboka rezviyero zvakatorwa pamafrequency akawanda kuvandudza kuyerwa kwechiyero.

Mumapurojekiti ekushandisa anosanganisira CTSU mutyairi uye TOUCH middleware modules (tarisa kune FSP, FIT, kana SIS zvinyorwa), apo iyo "QE yeCapacitive Touch" chikamu chekugadzirisa chinoitwa maparamendi e-multi-frequency kuyerwa anogadzirwa otomatiki, uye akawanda-. frequency kuyerwa inogona kushandiswa. Nekugonesa zvigadziriso zvepamberi muchikamu chetuning, maparamita anogona kubva agadzikwa nemaoko. Kuti uwane ruzivo nezve advanced mode multi-wachi kuyerwa marongero, tarisa kune Capacitive Kubata Yepamusoro Modhi Parameter Guide (R30AN0428EJ0100). Mufananidzo 3-5 unoratidza example yeKupindira Frequency pane Multi-frequency Measurement. Ex uyuample inoratidza iyo yekukanganisa frequency inoonekwa kana kuyerwa frequency kwakaiswa ku1MHz uye yakajairika mode conduction ruzha inoiswa kubhodhi uku iyo yekubata electrode inobatwa. Girafu (a) inoratidza marongero nekukurumidza mushure mekugadzirisa otomatiki; chiyero chekuyera chakaiswa ku +12.5% ​​ye2nd frequency uye -12.5% ​​ye3rd frequency yakavakirwa pa1st frequency ye1MHz. Girafu inosimbisa kuti kuyerwa kwega kwega kunokanganisa ruzha. Girafu (b) inoratidza example umo kuyerwa frequency inogadziriswa nemaoko; chiyero chekuyera chakaiswa ku -20.3% ye2nd frequency uye + 9.4% yeiyo 3rd frequency yakavakirwa pa1st frequency ye1MHz. Kana ruzha rwakati rweruzha ruchionekwa mumibairo yekuyera uye ruzha rweruzha ruchienderana nechiyero chekuyerwa, ita shuwa kuti unogadzirisa kuyerwa kwe-multi-frequency uku uchiongorora nharaunda chaiyo kudzivirira kukanganisa pakati peiyo ruzha frequency uye kuyerwa frequency.

Active Shield
MuCTSU2 self-capacitance nzira, nhovo inoshanda inogona kushandiswa kutyaira nhovo pateni muchikamu chimwe chete chekupuruzira seye sensor drive pulse. Kugonesa nhovo inoshanda, muQE yeCapacitive Touch interface kumisikidza, isa pini inobatanidza kune inoshanda nhovo pateni ku "shield pini." Active shield inogona kusetwa kune imwe pini paTouch interface kumisikidza (nzira). Kuti uwane tsananguro yekushanda kweActive Shield, tarisa kune "Capacitive Touch Mushandisi's Guide yeCapacitive Sensor MCUs (R30AN0424)”. Kuti uwane ruzivo rwekugadzira PCB, tarisa kune "CTSU Capacitive Touch Electrode Design Guide (R30AN0389)“.

Kusayerwa kweChannel Output Selection
Munzira yeCTSU2 yekuzvikwanisa, pulse inobuda muchikamu chimwe chete seye sensor drive pulse inogona kuiswa seiyo isiri-yeyero chiteshi kubuda. MuQE yeCapacitive Touch interface configuration (method), nzira dzisiri dzechiyero (ma electrode ekubata) anoiswa otomatiki kune imwechete pulse phase kubuda kune nzira dzakapihwa neanoshanda shielding.

Hardware Noise Countermeasures

Typical Noise Countermeasures

Bata Electrode Pateni Dhizaini
Iyo yekubata electrode yedunhu inobatwa zvakanyanya neruzha, inoda kuti ruzha kusadzivirirwa kutariswe pane hardware dhizaini s.tage. Kuti uwane yakadzama bhodhi dhizaini mitemo inobata kusadzivirirwa kweruzha, ndapota tarisa kune yazvino vhezheni ye CTSU Capacitive Touch Electrode Design Guide (R30AN0389). Mufananidzo 4-1 unopa chidimbu kubva kuNhungamiro inoratidza pamusoroview ye-self-capacitance nzira pateni dhizaini, uye Mufananidzo 4-2 inoratidza zvakafanana kune mutual-capacitance nzira pateni dhizaini.

1. Electrode shape: square kana denderedzwa
2. Electrode saizi: 10mm kusvika 15mm
3. Electrode proximity: Electrodes inofanira kuiswa pa ample kure kuitira kuti vasaite panguva imwe chete kune chinangwa chemunhu, (chinonzi "munwe" mugwaro rino); nguva yakatarwa: saizi yebhatani x 0.8 kana kupfuura
4. Wire width: approx. 0.15mm kusvika 0.20mm yebhodhi rakadhindwa
5. Wiring kureba: Ita wiring ipfupi sezvinobvira. Pamakona, gadzira 45-degree angle, kwete kona yakarurama.
6. Wiring spacing: (A) Ita kuti spacing ive yakafara sezvinobvira kudzivirira kuonekwa kwenhema nemaelectrode epedyo. (B) 1.27mm nhanho
7. Muchinjika-hatched GND pateni hupamhi: 5mm
8. Muchinjika-hatched GND pateni uye bhatani / wiring spacing(A) nzvimbo yakatenderedza maelectrode: 5mm (B) nzvimbo yakatenderedza wiring: 3mm kana kupfuura pamusoro penzvimbo ye electrode pamwe neiyo wiring uye yakatarisana nenzvimbo ine chinjika-yakachonywa pateni. Zvakare, isa chinjikira-chakatsemurwa pateni munzvimbo dzisina chinhu, uye batanidza 2 nzvimbo dzepachinjiro-yakachonywa mapatani kuburikidza nevias. Tarisa kuchikamu "2.5 Anti-Noise Layout Pateni Madhizaini" kune zvakachinjika-hatched pateni zviyero, inoshanda nhovo (CTSU2 chete), uye mamwe anti-ruzha nhanho.
9. Electrode + wiring capacitance: 50pF kana pasi
10. Electrode + wiring kuramba: 2K0 kana pasi (kusanganisira damping resistor ine referensi kukosha kwe5600)

Mufananidzo 4-1 Patani Dhizaini Kurudziro yeKuzvigonesa Method (chinyorwa)

1. Electrode chimiro: sikweya (yakasanganiswa transmitter electrode TX uye inogamuchira electrode RX)
2. Saizi yeElectrode: 10mm kana yakakura Electrode pedyo: Electrodes inofanira kuiswa ample chinhambwe kuitira kuti vasaite panguva imwe chete kune chinhu chekubata (munwe, nezvimwewo), (yakakurudzirwa nguva: saizi yebhatani x 0.8 kana kupfuura)
   • Wire width: The thinnest wire inokwanisa kuburikidza nekugadzirwa kwehuwandu; approx. 0.15mm kusvika 0.20mm yebhodhi rakadhindwa
3. Wiring kureba: Ita wiring ipfupi sezvinobvira. Pamakona, gadzira 45-degree angle, kwete kona yakarurama.
4. Wiring spacing:
   • Ita nzvimbo yakafara sezvinobvira kudzivirira kuonekwa kwenhema nemaelectrode evavakidzani.
   • Kana ma electrode akaparadzaniswa: 1.27mm pitch
   • 20mm kana kupfuura kudzivirira kubatanidza capacitance chizvarwa pakati peTx neRx.
5. Muchinjika-hatched GND pateni (shield guard) padhuze Nekuti pini parasitic capacitance muyakakurudzirwa bhatani patani idiki, parasitic capacitance inowedzera pedyo mapini ari kuGND.
   • A: 4mm kana kupfuura kumativi electrodes Isu tinokurudzirawo approx. 2-mm yakafara muchinjiko-hatched GND ndege muenzaniso pakati electrodes.
   • B: 1.27mm kana kupfuura kutenderedza wiring
6. Tx, Rx parasitic capacitance: 20pF kana pasi
7. Electrode + wiring kuramba: 2kQ kana pasi (kusanganisira damping resistor ine referensi kukosha kwe5600)
8. Usaisa iyo GND pateni zvakananga pasi pemagetsi kana wiring. Iyo inoshanda shield basa haigone kushandiswa kune mutual-capacitance nzira.

Mufananidzo 4-2 Patani Dhizaini Kurudziro yeMutual Capacitance Nzira (inotorwa)

Power Supply Design
Iyo CTSU ndeye analog peripheral module inobata maminiti emagetsi masaini. Kana ruzha rwapinda muvoltage yakapihwa kuMCU kana GND pateni, inokonzeresa inogona kushanduka mune sensor drive pulse uye inoderedza kuyerwa kwechiyero. Isu tinopa zano rakasimba rekuwedzera ruzha rwekumisikidza mudziyo kumagetsi emagetsi tambo yemagetsi kana onboard magetsi emagetsi emagetsi kuti ape zvakachengeteka magetsi kuMCU.

Voltage Supply Design
Chiito chinofanira kutorwa pakugadzira magetsi eiyo system kana onboard mudziyo kudzivirira kupinda ruzha kuburikidza neMCU magetsi epini. Mazano anotevera ane chekuita nekugadzira anogona kubatsira kudzivirira kupinza ruzha.

• Chengetedza tambo yekupa magetsi kune sisitimu uye wiring yemukati ipfupi sezvinobvira kuti uderedze impedance.
• Isa uye isa sefa yeruzha (ferrite core, ferrite bead, zvichingodaro) kudzivirira ruzha rwepamusoro.
• Deredza ripple pane MCU magetsi. Isu tinokurudzira kushandisa linear regulator pane iyo MCU's voltage supply. Sarudza linear regulator ine yakaderera-ruzha kubuda uye yakakwirira PSRR maitiro.
• Kana paine akati wandei maturusi ane yakakwira mitoro pabhodhi, isu tinokurudzira kuisa yakasarudzika magetsi emagetsi eMCU. Kana izvi zvisingabviri, paradzanisa muenzaniso pamudzi wemagetsi.
• Paunenge uchimhanyisa mudziyo une yakanyanya kushandiswa ikozvino paMCU pini, shandisa transistor kana FET.

Mufananidzo 4-3 unoratidza akati wandei marongero emagetsi emagetsi. Vo ndiro simba rekupa voltage, iko kushandiswa ikozvino kushanduka kunobva kuIC2 mashandiro, uye Z ndiyo magetsi emagetsi impedance. Vn ndiro voltage inogadzirwa netambo yemagetsi uye inogona kuverengerwa seVn = mu×Z. Iyo GND pateni inogona kutariswa nenzira imwechete. Kuti uwane rumwe ruzivo nezve GND patani, tarisa kune 4.1.2.2 GND Patani Dhizaini. Mukugadzirisa (a), tambo yemagetsi kuMCU yakareba, uye IC2 mitsara yemagetsi yebazi pedyo nemagetsi eMCU. Iyi gadziriso haina kukurudzirwa se MCU's voltage supply inobatwa neVn ruzha kana IC2 iri kushanda. (b) uye (c) dhiyagiramu yedunhu (b) na(c) yakafanana na(a), asi magadzirirwo epateni anosiyana. (b) matavi tambo yemagetsi kubva pamudzi wemagetsi, uye mhedzisiro yeVn ruzha inoderedzwa nekudzikisa Z pakati pesimba rekupa neMCU. C

GND Patani Dhizaini
Zvichienderana nedhizaini yemagadzirirwo, ruzha runogona kukonzera GND, rinova iro referensi voltage yeMCU uye zvishandiso zvepaboard, kuchinjika mukugona, kuderedza CTSU kuyerwa kwechiyero. Iwo anotevera mazano eGND pateni dhizaini achabatsira kudzvanya kungangoita kushanduka.

• Fukidza nzvimbo dzisina chinhu ine yakasimba GND pateni zvakanyanya sezvinobvira kuderedza impedance pamusoro penzvimbo yakakura.
• Shandisa hurongwa hwebhodhi hunodzivirira ruzha kubva pakupinda muMCU kuburikidza neGND mutsara nekuwedzera chinhambwe pakati peMCU nemidziyo ine mitoro yakakwira ikozvino nekuparadzanisa MCU kubva paGND pateni.

Mufananidzo 4-4 unoratidza akati wandei marongero eiyo GND mutsara. Muchiitiko ichi, iko kushandiswa ikozvino kushanduka kunobva kuIC2 mashandiro, uye Z ndiyo magetsi emagetsi impedance. Vn ndiro voltage inogadzirwa nemutsara weGND uye inogona kuverengerwa seVn = mu×Z. Mukugadzirisa (a), mutsetse weGND kuMCU wakareba uye unobatana neIC2 GND mutsetse pedyo nepini yeGND yeMCU. Kumisikidzwa uku hakukurudzirwe sezvo mukana weMCU weGND uchibatwa neVn ruzha kana IC2 iri kushanda. Mukugadzirisa (b) mitsara yeGND inobatana pamudzi weGND pini yemagetsi. Mhedzisiro yeruzha kubva kuVn inogona kuderedzwa nekuparadzanisa mitsetse yeGND yeMCU uye IC2 kuderedza nzvimbo pakati peMCU neZ. Kunyange zvazvo mifananidzo yedunhu (c) uye (a) yakafanana, maitiro ekugadzirisa anosiyana. Configuration (c) inoderedza mhedzisiro yeVn nekuwedzera nzvimbo uye mutsara wakafara weGND mutsara kudzikisa Z.

Batanidza iyo TSCAP capacitor's GND kune GND yakasimba pateni yakabatana neMCU's VSS terminal kuti ive neyakafanana neiyo VSS terminal. Usaparadzanise iyo TSCAP capacitor's GND kubva kuMCU's GND. Kana iyo impedance pakati peTSCAP capacitor's GND neMCU's GND yakakwira, iyo yakakwirira-frequency yekuramba ruzha kuita kweTSCAP capacitor inodzikira, zvichiita kuti iwedzere kubatwa nemagetsi emagetsi ruzha uye kunze ruzha.

Kugadzira Mapini Asina Kushandiswa
Kusiya mapini asina kushandiswa mune yakakwira impedance state inoita kuti mudziyo ugone kukanganiswa nemhedzisiro yekunze ruzha. Ita shuwa kuti unogadzira mapini ese asina kushandiswa mushure mekutaura kune inowirirana MCU Faily hardware bhuku repini yega yega. Kana chinodhonzera chinodhonzera chikatadza kuitwa nekuda kwekushaikwa kwenzvimbo yekukwirisa, gadzirisa iyo pini inobuda yekumisikidza kune yakaderera kubuda.

Radiated RF Noise Countermeasures

TS Pin Damping Resistance
The damping resistor yakabatana ne TS pin uye electrode's parasitic capacitance chikamu chinoshanda sesefa yakaderera-pasi. Kuwedzera damping resistor inodzikisira iyo yakatemwa-iyo frequency, nekudaro ichidzikisa mwero weradiated ruzha inopinda muTS pini. Nekudaro, kana iyo capacitive kuyerwa kubhadharisa kana kuburitsa ikozvino nguva yarebeswa, iyo sensor drive pulse frequency inofanirwa kudzikiswa, izvo zvakare zvinodzikisira kubata kwekuona kubata. Kuti uwane ruzivo maererano nekunzwa kana uchichinja damping resistor mune yekuzvimiririra nzira, tarisa ku "5. Kuzvigonera Method Bhatani Mapateni uye Hunhu Dhata” mu CTSU Capacitive Touch Electrode Design Guide (R30AN0389)

Digital Signal Noise
Digital siginecha wiring inobata kutaurirana, senge SPI neI2C, uye PWM masiginecha eLED uye odhiyo inobuda ndiyo sosi yeruzha rweradiation inokanganisa touch electrode circuit. Paunenge uchishandisa masaini edhijitari, funga mazano anotevera panguva yekugadzira stage.

• Kana iyo wiring ichisanganisira kurudyi-kona makona (90 madhigirii), ruzha radiation kubva kunzvimbo dzakapinza ichawedzera. Ita shuwa kuti makona ewaya ari madhigirii 45 kana kuti pasi, kana akakombama, kuderedza mwaranzi yeruzha.
• Kana iyo yedhijitari yedhijitari level yachinja, iyo overshoot kana undershoot inopenya seyakakwira-frequency ruzha. Senzira yekupikisa, isa adamping resistor pane yedhijitari siginecha mutsara kudzvinyirira overshoot kana undershoot. Imwe nzira ndeyekuisa ferrite bead pamutsara.
• Rongedza mitsara yemasaini edhijitari uye yekubata electrode wedunhu kuti isabata. Kana iyo gadziriso ichida kuti mitsetse imhanye mukuwirirana, chengeta kureba pakati pawo sezvinobvira uye isa GND nhoo pamwe nemutsara wedhijitari.
• Paunenge uchimhanyisa mudziyo une yakanyanya kushandiswa ikozvino paMCU pini, shandisa transistor kana FET.

Multi-frequency Measurement
Paunenge uchishandisa MCU yakamisikidzwa neCTSU2, ita shuwa kushandisa yakawanda-frequency kuyerwa. Kuti uwane rumwe ruzivo, ona 3.3.1 Multi-frequency Measurement.

Yakaitwa Noise Countermeasures
Kufunga kwekuita ruzha kusadzivirirwa kwakakosha zvakanyanya mukugadzira magetsi emagetsi dhizaini pane muMCU board dhizaini. Kutanga, gadzira magetsi ekupa voltage neruzha rwakaderera kune zvishandiso zvakaiswa pabhodhi. Kuti uwane ruzivo nezve marongero emagetsi, tarisa kune 4.1.2 Power Supply Design. Ichi chikamu chinotsanangura nhanho dzeruzha dzine chekuita nemagetsi pamwe neCTSU mabasa anofanirwa kutariswa paunenge uchigadzira yako MCU bhodhi yekuvandudza yakaitwa ruzha kudzivirirwa.

Common Mode Sefa
Isa kana kumisa yakajairwa modhi sefa (yakajairika modhi choke, ferrite musimboti) kuderedza ruzha runopinda mubhodhi kubva kune tambo yemagetsi. Ongorora masisitimu yekukanganisa frequency nebvunzo yeruzha uye sarudza chishandiso chine yakakwira impedance kuderedza bhendi yeruzha yakanangwa. Revera kune zvakateerana zvinhu sezvo nzvimbo yekuisa inosiyana zvichienderana nerudzi rwesefa. Cherechedza kuti rudzi rwese rwesefa rwakaiswa zvakasiyana pabhodhi; tarisa kune tsananguro inoenderana neruzivo. Gara uchifunga nezvesefa dhizaini kuti usaite ruzha mukati mebhodhi. Mufananidzo 4-5 unoratidza Common Mode Filter Layout Example.

Common Mode Choke
Iyo yakajairwa modhi choke inoshandiswa seyeruzha yekumisikidza inoiswa pabhodhi, ichida kuti iiswe panguva yebhodhi uye system dhizaini chikamu. Paunenge uchishandisa yakajairwa modhi inodzipa, ita shuwa kushandisa iyo ipfupi wiring inokwanisika pakarepo mushure meiyo nzvimbo iyo magetsi akabatana nebhodhi. For example, kana uchibatanidza tambo yemagetsi uye bhodhi nechisungo, kuisa sefa pakarepo mushure mekubatanidza padivi rebhodhi kunodzivirira ruzha runopinda kuburikidza netambo kubva pakupararira mubhodhi.

Ferrite Core
Iyo ferrite core inoshandiswa kuderedza ruzha rwunoitwa kuburikidza netambo. Kana ruzha rwava nyaya mushure memusangano wehurongwa, kuunza clamp-mhando ferrite musimboti inobvumidza iwe kuderedza ruzha pasina kushandura bhodhi kana dhizaini dhizaini. For example, kana uchibatanidza tambo nebhodhi nechibatanidza, kuisa sefa pamberi pechibatanidza padivi rebhodhi kunoderedza ruzha runopinda mubhodhi.

Capacitor Layout
Deredza magetsi ekupa ruzha uye ruzha runopinda mubhodhi kubva kune magetsi uye tambo dzechiratidzo nekugadzira nekuisa ma decoupling capacitor uye macapacitor mazhinji padhuze netambo yemagetsi yeMCU kana materminal.

Decoupling capacitor
A decoupling capacitor inogona kuderedza voltaginodonha pakati peVCC kana VDD magetsi epini neVSS nekuda kwekushandiswa kweMCU ikozvino, kudzikamisa zviyero zveCTSU. Shandisa iyo yakakurudzirwa capacitance yakanyorwa muMCU User's Manual, uchiisa capacitor pedyo nepini yemagetsi uye VSS pini. Imwe sarudzo ndeyekugadzira iyo pateni nekutevera iyo hardware dhizaini dhizaini yeinonangwa MCU mhuri, kana iripo.

Bulk Capacitor
Bulk capacitor inotsvedzerera ripples muMCU's voltage supply source, kudzikamisa voltage pakati peMCU's pini yesimba neVSS, uye nekudaro kudzikamisa zviyero zveCTSU. Iko capacitance ye capacitors ichasiyana zvichienderana nekugadzirwa kwemagetsi; ita shuwa kuti unoshandisa kukosha kwakakodzera kudzivirira kugadzira oscillation kana voltage kudonha

Multi-frequency Measurement
Multi-frequency kuyerwa, basa reCTSU2, rinoshanda mukuvandudza yakaitwa ruzha kusadzivirirwa. Kana yakaitwa kudzivirirwa kweruzha kuri kunetseka mukukura kwako, sarudza MCU ine CTSU2 kushandisa iyo yakawanda-frequency kuyerwa basa. Kuti uwane ruzivo, tarisa ku3.3.1 Multi-frequency Measurement.

Mafungiro eGND Shield uye Electrode Distance
Mufananidzo 1 unoratidza mufananidzo wekudzvinyirira ruzha uchishandisa conduction ruzha rwekuwedzera nzira ye electrode shield. Kuisa GND shield kumativi e electrode uye kuunza nhovo yakakomberedza electrode pedyo ne electrode inosimbisa capacitive coupling pakati pemunwe uye nhovo. Iyo ruzha chikamu (VNOISE) inotizira kuB-GND, ichidzikisa kuchinjika muCTSU kuyerwa kwazvino. Ziva kuti padhuze nhovo ndeye electrode, iyo yakakura iyo CP, zvichikonzera kuderedzwa kwekubata kubata. Mushure mekushandura chinhambwe pakati penhovo uye electrode, simbisa kunzwisiswa muchikamu 5. Self-capacitance Method Button Patterns uye Characteristics Data ye CTSU Capacitive Touch Electrode Design Guide (R30AN0389).

Masefa eSoftware

Kubatwa kwekubata kunoshandisa capacitance kuyerwa mhinduro kuona kuti sensor yabatwa here kana kuti kwete (ON kana OFF) uchishandisa ese ari maviri CTSU mutyairi uye TOUCH module software. Iyo CTSU module inoita kudzikisa ruzha pane capacitance kuyerwa mhinduro uye inopfuudza iyo data kune TOUCH module iyo inosarudza kubata. Mutyairi weCTSU anosanganisira iyo IIR inofamba avhareji sefa seyakajairika sefa. Kazhinji, iyo yakajairwa sefa inogona kupa yakakwana SNR uye kupindura. Nekudaro, yakanyanya simba yekudzikisa ruzha kugadzirisa inogona kudikanwa zvichienderana neiyo mushandisi sisitimu. Mufananidzo 5-1 inoratidza Kuyerera kweData Kuburikidza Nekubata Kuonekwa. Mafirita emushandisi anogona kuiswa pakati peCTSU mutyairi uye TOUCH module yekugadzirisa ruzha. Tarisa kune chinyorwa chekunyorera pazasi kuti uwane yakadzama mirairo yekubatanidza mafirita mupurojekiti file pamwe nesoftware sefa sample kodhi uye kushandiswa example project file. RA Mhuri Capacitive Kubata Software Sefa Sample Chirongwa (R30AN0427)

Ichi chikamu chinosuma mafirita anoshanda kune yega yega EMC chiyero.

Tafura 5-1 EMC Yakajairwa uye Inopindirana Software Mafirita

EMC Yakajairwa	Ruzha runotarisirwa	Inoenderana Software Filter
IEC61000-4-3	Random ruzha	IIR sefa
Radiated immunity,
IEC61000-4-6	Periodic noise	FIR sefa
Kuitwa immunity

IIR Sefa
Iyo IIR sefa (Infinite Impulse Response sefa) inoda kushoma ndangariro uye inozvirumbidza diki kuverenga mutoro, zvichiita kuti ive yakakodzera kune yakaderera-simba masisitimu uye maapplication ane akawanda mabhatani. Kushandisa iyi sefa yepasi-pasi kunobatsira kuderedza ruzha-ruzha. Zvisinei, kutarisirwa kunofanira kutorwa seyakaderera cutoff frequency, iyo yakareba nguva yekugadzirisa, iyo inononoka iyo ON / OFF kutonga maitiro. Iyo single-pole yekutanga-odha IIR sefa inoverengerwa uchishandisa inotevera fomula, apo a uye b ari coefficients, xn ndiyo kukosha kwekuisa, yn ndiko kukosha kwekubuda, uye yn-1 ndiyo yakare yapfuura kukosha kwekubuda.

Kana iyo IIR sefa ichishandiswa senge yakaderera-pass sefa, coefficients a uye b inogona kuverengerwa uchishandisa inotevera formula, uko s.ampling frequency is fs uye cutoff frequency is fc.

FIR Sefa
Iyo FIR sefa (Finite Impulse Response sefa) isefa yakagadzikana zvakanyanya iyo inounza kuderera kuderera nekuda kwekukanganisa kwekuverenga. Zvichienderana necoefficient, inogona kushandiswa seyakaderera-pass sefa kana bhendi-pass sefa, ichidzikisa ese ari maviri eperiodic ruzha uye ruzha ruzha, nekudaro kuvandudza SNR. Zvisinei, nokuti sampzvishoma kubva pane imwe nguva yapfuura zvinochengetwa uye kuverengerwa, kushandiswa kwendangariro uye kuverenga mutoro kuchawedzera mukuenzana nehurefu hwepombi yekusefa. Iyo FIR sefa inoverengerwa pachishandiswa formula inotevera, apo L uye h0 kusvika hL-1 ari coefficients, xn kukosha kwekuisa, xn-I ndiyo kukosha kwekuisa kwapfuura kune s.ample i, uye yn ndiyo kukosha kwekubuda.

Kushandisa Examples
Ichi chikamu chinopa exampmashoma ekubvisa ruzha uchishandisa IIR neFIR mafirita. Tafura 5-2 inoratidza mafirita mamiriro uye Mufananidzo 5-2 inoratidza example yekusarongeka kweruzha kubviswa.

Tafura 5-2 Kushandisa Sefa Examples

Sefa Format	Condition 1	Condition 2	Mashoko
Single-pole yekutanga-odha IIR	b=0.5	b=0.75
MOTO	L=4 h0~ hL-1=0.25	L=8 h0~ hL-1=0.125	Shandisa iri nyore kufamba pakati

Mashandisiro Akanyorwa Nezvekuyera Kutenderera
Iyo frequency maitiro esoftware mafirita anoshanduka zvichienderana nekurongeka kwekuyera kutenderera. Pamusoro pezvo, haugone kuwana zvinotarisirwa mafirita maitiro nekuda kwekutsauka kana kusiyanisa mukuyera kutenderera. Kuti utarise pamberi pemafirita maitiro, shandisa yakakwirira-kumhanya pa-chip oscillator (HOCO) kana yekunze crystal oscillator sewachi huru. Isu tinokurudzirawo kubata kuyera kuyerwa kwekuita cycles nehardware timer.

Tsanangudzo yemashoko

Term	Tsanangudzo
CTSU	Capacitive Touch Sensing Unit. Inoshandiswawo muCTSU1 uye CTSU2.
CTSU1	Chizvarwa chechipiri CTSU IP. "1" inowedzerwa kusiyanisa kubva kuCTSU2.
CTSU2	Yechitatu-chizvarwa CTSU IP.
CTSU mutyairi	CTSU mutyairi software akaunganidzwa muRenesas Software mapakeji.
CTSU module	Chikamu cheCTSU mutyairi software iyo inogona kunyudzwa uchishandisa iyo Smart Configurator.
BATA pakati	Middleware yekubata yekuona kugadzirisa kana uchishandisa CTSU yakaunganidzwa muRenesas software mapakeji.
BATA module	Chiyero che TOUCH middleware chinogona kuiswa uchishandisa Smart Configurator.
r_ctsu module	Mutyairi weCTSU anoratidzwa muSmart Configurator.
rm_touch module	Iyo TOUCH module inoratidzwa muSmart Configurator
CCO	Ikozvino Kudzora Oscillator. Ikozvino-inodzorwa oscillator inoshandiswa mune capacitive touch sensors. Zvakare yakanyorwa seICO mune mamwe magwaro.
ICO	Zvakafanana neCCO.
TSCAP	A capacitor yekudzikamisa iyo CTSU yemukati voltage.
Damping resistor	A resistor inoshandiswa kuderedza kukuvadzwa kwepini kana mhedzisiro nekuda kweruzha rwekunze. Kuti uwane rumwe ruzivo, tarisa iyo Capacitive Kubata Electrode Dhizaini Guide (R30AN0389).
VDC	Voltage Down Converter. Simba rekupa dunhu re capacitive sensor kuyerwa kwakavakirwa muCTSU.
Multi-frequency kuyerwa	Basa rinoshandisa akawanda sensor unit wachi ane akasiyana ma frequency kuyera kubata; inoratidza kuyera kwewachi yakawanda.
Sensor drive pulse	Chiratidzo chinotyaira iyo switched capacitor.
Synchronous ruzha	Noise pane frequency inofanana ne sensor drive pulse.
EUT	Equipment Under Test. Inoratidza mudziyo kuti uedzwe.
LDO	Yakaderera Dropout Regulator
PSRR	Power Supply Rejection Ration
FSP	Flexible Software Package
FIT	Firmware Integration Technology.
SIS	Software Integration System

Revision History

Rev.	Date	Tsanangudzo
		Page	Summary
1.00	Chivabvu 31, 2023	–	Yekutanga kudzokorora
2.00	Zvita 25, 2023	–	YeIEC61000-4-6
		6	Yakawedzera zvakajairika modhi ruzha kukanganisa ku2.2
		7	Yakawedzera zvinhu paTafura 2-5
		9	Manyoro akadzokororwa mu3.1, akagadziridzwa Mufananidzo 3-1
			Mavara akadzokororwa muna 3-2
		10	Muna 3.3.1, zvinyorwa zvakadzokororwa uye akawedzera Mufananidzo 3-4. Yakadzimwa tsananguro yekuchinja magadzirirwo ezviyero zve-multi-frequency uye yakawedzera tsananguro ye-multi-frequency measurement interference frequency Figure 3-5e3-5.
		11	Yakawedzera magwaro ereferenzi ku3.2.2
		14	Yakawedzerwa chinyorwa chine chekuita neTSCAP capacitor GND yekubatanidza kune 4.1.2.2
		15	Yakawedzerwa chinyorwa chine chekuita nekona yekugadzira dhizaini ku4.2.2
		16	Yakawedzerwa 4.3 Inoitwa Noise Countermeasures
		18	Yakadzokororwa chikamu 5.

General Precautions muKubata kweMicroprocessing Unit uye Microcontroller Unit Zvigadzirwa

Manotsi anotevera ekushandisa anoshanda kune ese Microprocessing unit uye Microcontroller unit zvigadzirwa kubva kuRenesas. Kuti uwane ruzivo rwakadzama rwemashandisirwo pane zvigadzirwa zvakafukidzwa negwaro iri, tarisa kune akakodzera zvikamu zvegwaro pamwe nechero ruzivo rwehunyanzvi rwakapihwa zvigadzirwa.

1. Chengetedzo pakurwisa Electrostatic Discharge (ESD)
   Nzvimbo yemagetsi yakasimba, kana yaiswa pachigadzirwa cheCMOS, inogona kuparadza gedhi oxide uye pakupedzisira kushatisa kushanda kwemudziyo. Matanho anofanirwa kutorwa kumisa kugadzirwa kwemagetsi akamira zvakanyanya sezvinobvira, uye nekukasira kuibvisa kana yaitika. Kudzora kwezvakatipoteredza kunofanira kuva kwakakwana. Kana yakaoma, humidifier inofanira kushandiswa. Izvi zvinokurudzirwa kudzivirira kushandisa insulators anogona nyore kuvaka static magetsi. Semiconductor zvishandiso zvinofanirwa kuchengetwa uye kutakurwa mu-anti-static container, static shielding bag, kana conductive material. Yese maturusi ekuyedza uye ekuyeresa anosanganisira mabhenji ebasa uye pasi zvinofanirwa kudzikwa. Mushandi anofanirawo kuiswa pasi achishandisa tambo yeruoko. Semiconductor zvishandiso hazvifanirwe kubatwa nemaoko asina maoko. Kuchengetedza kwakafanana kunofanirwa kutorwa kune akadhindwa edunhu mabhodhi ane akaiswa semiconductor zvishandiso.
2. Kugadziridza pamagetsi-on
   Mamiriro echigadzirwa haana kutsanangurwa panguva iyo simba rinopihwa. Nyika dzemaseketi emukati muLSI hadzina magumo uye nyika dzemarejista zvigadziriso nemapini hazvina kutsanangurwa panguva iyo simba rinopihwa. Muchigadzirwa chakapedzwa apo chiratidzo chekugadzirisa chinoshandiswa kune yekunze reset pini, nyika dzepini hadzina kuvimbiswa kubva panguva iyo simba rinopiwa kusvikira maitiro ekugadzirisazve apera. Saizvozvo, iyo nyika yepini mune chigadzirwa chinogadzikiswa ne-on-chip simba-pakugadzirisa reset basa haina kuvimbiswa kubva panguva iyo simba rinopihwa kusvika simba rasvika padanho rinotsanangurwa reset.
3. Kuiswa kwechiratidzo panguva yekudzima simba
   Usaise masaini kana I/O yekudhonza-kumusoro magetsi uku mudziyo uchidzimwa. Ijekiseni razvino rinobva mukuiswa kwechiratidzo chakadaro kana I/O yekudhonza-kumusoro magetsi inogona kukonzera kusashanda uye isingaite yazvino inopfuura mumudziyo panguva ino inogona kukonzera kuderedzwa kwezvinhu zvemukati. Tevedza gwara rekuisa chiratidzo panguva yekudzima simba sekutsanangurwa kwazvino muzvinyorwa zvechigadzirwa chako.
4. Kubata mapini asina kushandiswa
   Bata mapini asina kushandiswa nemirairo yakapihwa pasi pekubata mapini asina kushandiswa mubhuku rekushandisa. Mapini ekupinza ezvigadzirwa zveCMOS anowanzo ari mune yakakwira-impedance state. Mukushanda nepini isina kushandiswa munzvimbo yakavhurika-yedunhu, ruzha rwekuwedzera kwemagetsi runokonzereswa munharaunda yeLSI, kupfura kwakabatana-kuburikidza nezvino kuyerera mukati, uye kusashanda kunoitika nekuda kwekuzivikanwa kwenhema kwepini sechiratidzo chekupinza. kuita zvinogoneka.
5. Zviratidzo zvewachi
   Mushure mekushandisa reset, ingosunungura mutsara wekugadzirisa mushure mekunge chiratidzo chewachi chekushanda chagadzikana. Paunenge uchichinja chiratidzo chewachi panguva yekuitwa kwechirongwa, mirira kusvika chiratidzo chewachi chagadziriswa. Kana chiratidzo chewachi chinogadzirwa nekunze resonator kana kubva kune oscillator yekunze panguva yekugadziriswa, ita shuwa kuti mutsara wekugadzirisa unongoburitswa mushure mekugadzikana kwakazara kwechiratidzo chewachi. Pamusoro pezvo, kana uchichinjira kuchiratidzo chewachi chinogadzirwa nekunze resonator kana nekunze oscillator apo chirongwa chiri kuenderera mberi, mirira kusvika chiratidzo chewachi chagadzikana.
6. Voltage application waveform pane pini yekupinza
   Waveform kukanganisa nekuda kweruzha rwekuisa kana wave inoratidzwa inogona kukonzera kusashanda. Kana iyo yekupinza yeCMOS mudziyo ikagara munzvimbo iri pakati peVIL (Max.) neVIH (Min.) nekuda kweruzha, kune ex.ampuye, mudziyo unogona kusashanda. Chenjerera kuti udzivise ruzha rwekutaurirana kubva pakupinda mudziyo kana iyo yekupinza nhanho yakagadziriswa, uye zvakare munguva yekuchinja apo iyo yekupinza nhanho inopfuura munzvimbo iri pakati peVIL (Max.) uye VIH (Min.).
7. Kurambidzwa kuwana kero dzakachengetwa
   Kusvika kumakero akachengetwa kunorambidzwa. Makero akachengetwa anopihwa kuti zvigone kuwedzera mabasa mune ramangwana. Usawane maadhiresi aya sezvo kushanda chaiko kweLSI hakuna kuvimbiswa.
8. Kusiyana pakati pezvigadzirwa
   Usati wachinja kubva kune chimwe chigadzirwa kuenda kune chimwe, semuenzanisoample, kune chigadzirwa chine chikamu chakasiyana nhamba, simbisa kuti shanduko haitungamiri kumatambudziko. Hunhu hweiyo micro processing unit kana microcontroller unit zvigadzirwa muboka rimwe chete asi iine chikamu chakasiyana nhamba inogona kusiyana maererano nemukati mendangariro kugona, marongero maitiro, uye zvimwe zvinhu, izvo zvinogona kukanganisa huwandu hwemagetsi maitiro, senge hunhu hwehunhu. , maburi ekushanda, kusadzivirirwa kune ruzha, uye huwandu hweruzha runopenya. Paunenge uchichinja kuita chigadzirwa chine chikamu chakasiyana nhamba, ita bvunzo-yekuongorora system yechigadzirwa chakapihwa.

Cherechedzai

1. Tsananguro dzemaseketi, software, uye rumwe ruzivo rwakabatana mugwaro rino zvinopihwa chete kuratidza mashandiro ezvigadzirwa zve semiconductor uye application ex.amples. Iwe une mutoro wakazara wekubatanidzwa kana chero kumwe kushandiswa kwemaseketi, software, uye ruzivo mukugadzirwa kwechigadzirwa chako kana system. Renesas Electronics inorambidza chero mhosva kune chero kurasikirwa uye kukuvadzwa kunoitwa newe kana mapato echitatu kubva mukushandiswa kwemaseketi aya, software, kana ruzivo.
2. Renesas Electronics pano inorambira pachena chero waranti yekupokana uye mhosva yekutyorwa kana chero zvimwe zvichemo zvinosanganisira patents, copyrights, kana dzimwe kodzero dzepfungwa dzevatatu mapato, kana kubva mukushandiswa kweRenesas Electronics zvigadzirwa kana ruzivo rwehunyanzvi rwakatsanangurwa mugwaro rino, kusanganisira asi kwete kugumira kune, iyo chigadzirwa data, kudhirowa, machati, zvirongwa, algorithms, uye application examples.
3. Hapana rezenisi, kutaura, kurehwa, kana neimwe nzira, inopihwa pano pasi pese patents, macopyright, kana dzimwe kodzero dzenjere dzeRenesas Electronics kana vamwe.
4. Iwe uchave nebasa rekuona kuti ndeapi marezinesi anodiwa kubva kune chero vechitatu mapato, uye kuwana marezinesi akadaro ekupinza zviri pamutemo, kunze, kugadzira, kutengesa, kushandiswa, kugovera, kana kumwe kuraswa kwechero zvigadzirwa zvinosanganisira Renesas Electronics zvigadzirwa, kana zvichidikanwa.
5. Iwe haufanire kuchinja, kugadzirisa, kukopa, kana kudzosera kumashure mainjiniya chero Renesas Electronics chigadzirwa, chingave chiri chose kana chikamu. Renesas Electronics inorambidza chero mhosva kune chero kurasikirwa kana kukuvadzwa kunoitwa newe kana mapato echitatu kubva mukushandurwa, kugadziridzwa, kukopa, kana kudzosera kumashure mainjiniya.
6. Zvigadzirwa zveRenesas Electronics zvakakamurwa zvinoenderana neanotevera magiredhi emhando: "Standard" uye "High Quality". Izvo zvinotarisirwa mashandisirwo ega ega Renesas Electronics chigadzirwa zvinoenderana nemhando yechigadzirwa giredhi, sezvaratidzwa pazasi.
   “Standard”: Makombiyuta; midziyo yehofisi; midziyo yekutaurirana; bvunzo uye kuyerwa midziyo; odhiyo uye midziyo yekuona; midziyo yemagetsi yemumba; midziyo yemuchina; midziyo yemagetsi yemunhu; marobhoti eindasitiri; etc.
   "Hunhu Hwepamusoro": Midziyo yekufambisa (motokari, zvitima, zvikepe, nezvimwewo); traffic control (marambi emotokari); midziyo yekurukurirano huru; makiyi emari ekupedzisira masisitimu; kuchengetedza kudzora midziyo; etc.
   Kunze kwekunge yakasarudzwa sechigadzirwa chakavimbika chepamusoro kana chigadzirwa chenzvimbo dzakaomarara muRenesas Electronics data sheet kana imwe Renesas Electronics gwaro, Renesas Electronics zvigadzirwa hazvina kurongerwa kana kupihwa mvumo yekushandiswa mune zvigadzirwa kana masisitimu anogona kuisa njodzi kuhupenyu hwevanhu. kana kukuvara kwemuviri (midziyo yekutsigira hupenyu hwekugadzira kana masisitimu; kuiswa kwekuvhiya; zvichingodaro) kana kukonzeresa kukuvadzwa kwepfuma kwakakomba (hurongwa hwemuchadenga; zvinodzokorora pasi pegungwa; masisitimu ekudzora simba renyukireya; masisitimu ekudzora ndege; masisitimu makuru echirimwa; midziyo yehondo; nezvimwewo). Renesas Electronics inorambidza chero mhosva yekukuvadza kana kurasikirwa kwakakonzerwa newe kana chero mapato echitatu kubva mukushandiswa kwechero Renesas Electronics chigadzirwa chisingaenderane nechero Renesas Electronics data sheet, bhuku remushandisi, kana rimwe gwaro reRenesas Electronics.
7. Hapana semiconductor chigadzirwa chakachengeteka. Zvisineyi chero matanho ekuchengetedza kana maficha anogona kuitwa muRenesas Electronics hardware kana software zvigadzirwa, Renesas Electronics haizove nemhosva inobva mukusagadzikana kana kutyora kwekuchengetedza, kusanganisira asi isina kuganhurirwa kune chero kupi zvako kusingatenderwe kuwana kana kushandisa chigadzirwa cheRenesas Electronics kana. chirongwa chinoshandisa Renesas Electronics chigadzirwa. RENESAS ELECTRONICS HAISI RUVIRO KANA KUTI RUBATSIRO ROKUTI RENESAS ELECTRONICS PRODUCTS KANA CHESE SYSTEMS AKASIKIRWA UCHISHANDISA RENESAS ELECTRONICS PRODUCTS ACHANGE ACHABARWA KANA KUBVA KUBVA KUUori, KURWISA, MAVIRUSI, KUPINDA, KUPINDA, KUTARISANA, lnerability Issues”) . RENESAS ELECTRONICS INORAMBA CHESE UYE CHESE BASA KANA KUTI MHOSVA IRI KUBVA KUBVA KANA KUNYORERA NEZVINHU ZVINHU ZVINHU ZVINOGONA. ZVIMWE ZVAKAWANDA, KUSVIRWA NEMURAIRO unoshandirwa, REENESAS ELECTRONICS ZVINOTAURWA CHESE UYE NESE WARRANTI, ZVINOTAURWA KANA ZVINOREVIRWA, PANE RUGWARO UYE UYE CHESE ZVINOENDERANA KANA ZVINOFAMBA NESOFTWARE ZVINHU ZVISI ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVISI ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU ZVINHU KUNOGONA, KANA KUKOdzera ZVIMWE CHINANGWA.
8. Paunenge uchishandisa Renesas Electronics zvigadzirwa, tarisa kune yazvino chigadzirwa ruzivo (mapepa edatha, zvinyorwa zvevashandisi, zvinyorwa zvekushandisa, "General Notes dzeKubata uye Kushandisa Semiconductor Devices" mubhuku rekuvimbika, nezvimwewo), uye ive nechokwadi chekuti mamiriro ekushandisa ari mukati meiyo tambo. inotsanangurwa neRenesas Electronics maererano nehukuru ratings, inoshanda magetsi ekupa voltage range, maitiro ekupisa kupisa, kuiswa, etc. Renesas Electronics inorambidza chero mhosva kune chero kusashanda, kutadza, kana tsaona inomuka kubva mukushandiswa kweRenesas Electronics zvigadzirwa kunze kweiyo yakatarwa siyana.
9. Kunyangwe Renesas Electronics ichiedza kuvandudza kunaka uye kuvimbika kweRenesas Electronics zvigadzirwa, semiconductor zvigadzirwa zvine chaiwo hunhu, sekuitika kwekutadza pane imwe chiyero uye kusashanda pasi pemamwe mamiriro ekushandisa. Kunze kwekunge yakasarudzwa sechigadzirwa chakavimbika chepamusoro kana chigadzirwa chenzvimbo dzakaomarara muRenesas Electronics data sheet kana imwe Renesas Electronics gwaro, Renesas Electronics zvigadzirwa hazvienderane neradiation kuramba dhizaini. Iwe une basa rekushandisa matanho ekuchengetedza kudzivirira mukana wekukuvara kwemuviri, kukuvara kana kukuvara kunokonzerwa nemoto, uye / kana njodzi kune veruzhinji kana paine kutadza kana kusashanda kwezvigadzirwa zveRenesas Electronics, senge kuchengetedza dhizaini yehardware uye. software, kusanganisira asi isina kuganhurirwa kune redundancy, kutonga kwemoto, nekudzivirira kusashanda zvakanaka, kurapwa kwakakodzera kwekuderera kwekuchembera kana chero mamwe matanho akakodzera. Nekuti kuongororwa kwemicrocomputer software chete kwakaoma uye hakushande, iwe une basa rekuongorora kuchengetedzeka kwezvigadzirwa zvekupedzisira kana masisitimu anogadzirwa newe.
10. Ndokumbira ubate hofisi yekutengesa yeRenesas Electronics kuti uwane ruzivo rwezvemamiriro ekunze senge kuenderana kwezvakatipoteredza kwechimwe nechimwe Renesas Electronics chigadzirwa. Iwe une basa rekunyatsoongorora uye zvakakwana mitemo inoshanda nemirairo inotonga kubatanidzwa kana kushandiswa kwezvinhu zvinodzorwa, kusanganisira pasina muganhu, EU RoHS Directive, uye kushandisa Renesas Electronics zvigadzirwa mukutevedzera iyi yese mitemo inoshanda. Renesas Electronics inorambidza chero mhosva yekukuvadzwa kana kurasikirwa kunoitika nekuda kwekusatevedzera kwako mitemo nemirau inoshanda.
11. Zvigadzirwa zveRenesas Electronics uye matekinoroji hazvizoshandiswe kana kuisirwa mune chero zvigadzirwa kana masisitimu ayo kugadzira, kushandisa, kana kutengesa kunorambidzwa pasi pemitemo ipi neipi inoshanda yepamba kana yekunze kana mirau. Iwe unozotevedzera chero mitemo yekudzora kunze kwenyika nemirairo yakashambadzwa uye inotungamirwa nehurumende dzechero nyika dzine masimba pamusoro pemapato kana kutengeserana.
12. Ibasa remutengi kana muparidzi wezvigadzirwa zveRenesas Electronics, kana chero bato rinogovera, rinorasa, kana neimwe nzira kutengesa kana kuendesa chigadzirwa kune wechitatu bato, kuzivisa wechitatu bato pamberi pezviri mukati uye mamiriro akatsanangurwa mu. gwaro iri.
13. Gwaro iri harizodhindwa patsva, kudhindwa, kana kudzokororwa mune chero chimiro, chakazara kana chikamu, pasina mvumo yakanyorwa yeRenesas Electronics.
14. Ndokumbira ubate hofisi yekutengesa yeRenesas Electronics kana uine chero mibvunzo maererano neruzivo rwuri mugwaro iri kana zvigadzirwa zveRenesas Electronics.

• (Cherechedza1) “Renesas Electronics” sekushandiswa kwarakaitwa mugwaro iri zvinoreva Renesas Electronics Corporation uye inosanganisirawo masangano ayo anodzorwa zvakananga kana zvisina kunanga.
• (Cherechedza2) “Renesas Electronics chigadzirwa(s)” zvinoreva chero chigadzirwa chakagadzirwa kana kugadzirwa neRenesas Electronics.

Corporate Headquarter
TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan www.renesas.com

Trademarks
Renesas uye Renesas logo zviratidzo zveRenesas Electronics Corporation. Ese matrademark uye marejisheni akanyoreswa zvinhu zvevaridzi vazvo.

Contact information
Kuti uwane rumwe ruzivo nezve chigadzirwa, tekinoroji, iyo yazvino-yezvino vhezheni yegwaro, kana hofisi yako yepedyo yekutengesa, ndapota shanya. www.renesas.com/contact/.

• 2023 Renesas Electronics Corporation. Kodzero dzese dzakachengetwa.

Zvinyorwa / Zvishandiso

RENESAS RA2E1 Capacitive Sensor MCU [pdf] Bhuku reMushandisi RA2E1, RX Mhuri, RA Mhuri, RL78 Mhuri, RA2E1 Capacitive Sensor MCU, RA2E1, Capacitive Sensor MCU, Sensor MCU

References

• User Manual