ESPRESSIF SYSTEMS ESP8684-WROOM-060 ESP32 C2 Manual Pamaké Modul

Pasang Prasyarat: Install required software tools and libraries.
Kéngingkeun ESP-IDF: Download the ESP-IDF (Espressif IoT Development Framework).

Nyetél Alat: Configure development tools for programming.
Nyetél Variabel Lingkungan: Set necessary environment variables for the development environment.

Jieun Proyék Mimiti Anjeun

Mimitian Proyék
Jieun proyék anyar dina lingkungan pangwangunan anjeun.

Sambungkeun Alat Anjeun
Establish a connection between your development environment and the ESP8684-WROOM-06C module.

Konpigurasikeun
Configure the project settings and parameters according to your requirements.

Ngawangun Proyék
Compile proyék pikeun ngahasilkeun gambar firmware.

Flash kana Alat
Flash the compiled firmware onto the ESP8684-WROOM-06C module.

Ngawaskeun
Monitor the device behavior and output for testing and debugging purposes.

Modul Leuwihview

Fitur

CPU jeung On-Chip Mémori

ESP8684H2 atanapi ESP8684H4 dipasang, prosésor inti tunggal RISC-V 32-bit, dugi ka 120 MHz

576 KB ROM
272 KB SRAM (16 KB pikeun cache)

In-Package flash (see details in Table 1 ESP8684-WROOM-06C Series Comparison)
Access to flash is accelerated by cache

Supports flash in-circuit Programming (ICP)

Wifi

IEEE 802.11 b/g/n-patuh
Center frequency range ofthe operating channel:
2412 ~ 2462 MHz

Supports 20 MHz bandwidth in the 2.4 GHz band
modeu 1T1R kalawan laju data nepi ka 72.2 Mbps

Wi-Fi Multimedia (WMM)
TX / RX A-MPDU, TX / RX A-MSDU
Geura Blok ACK
Fragméntasi sareng defragméntasi
Kasempetan ngirimkeun (TXOP)
Ngawaskeun Beacon Otomatis (hardware TSF)
3 × panganteur Wi-Fi virtual
Dukungan sakaligus pikeun Infrastruktur BSS dina mode Stasion, mode SoftAP, mode Station + SoftAP, sareng mode promiscuous
Note that when the ESP8684 series scans in Station mode, the SoftAP channel will change along with the Station channel.

Bluetooth®

Bluetooth LE: Bluetooth 5.3 Certified
High power mode (20 dBm)
Laju: 125 kbps, 500 kbps, 1 Mbps, 2 Mbps
ekstensi Iklan
Sababaraha set iklan
Algoritma pamilihan saluran #2
Mékanisme ko-eksistensi internal antara Wi-Fi sareng Bluetooth pikeun ngabagi anteneu anu sami

périferal
GPIO, SPI, UART, I2C, LED PWM controller, general DMA controller, temperature sensor, SAR ADC, timers, and watchdog
Catetan:
* Please refer to the ESP8684 Series Datasheet for detailed information about the module peripherals.

komponén terpadu on Module
26 MHz osilator kristal

Pilihan anteneu
Anteneu PCB on-board

Kaayaan Operasi

Operasi voltage/Power supply: 3.0 ~ 3.6 V
Suhu lingkungan operasi: -40 ~ 105 °C

Sertifikasi

Bluetooth certification: BQB
Sertifikasi héjo: RoHS / REACH

Tes
HTOL/HTSL/uHAST/TCT/ESD/Latch-up

Katerangan

ESP8684-WROOM-06C mangrupikeun modul Wi-Fi generik sareng Bluetooth LE anu kuat. modul ieu mangrupa pilihan idéal pikeun imah pinter, automation industri, kasehatan, éléktronika konsumén, jsb.
ESP8684-WROOM-06C can be mounted onto the surface of a PCB board via reflow soldering or vertically soldered to a PCB board via wave soldering. When surface mounted, the module has 14 available GPIOs; when vertically soldered, the module has 5 available GPIOs.

ESP8684-WROOM-06C hadir kalawan anteneu PCB on-board.
Babandingan séri pikeun ESP8684-WROOM-06C nyaéta kieu:

Kode pesenan Flash Dina-Pakét Ambient Temp.1
(°C)
Ukuran
(mm)

ESP8684-WROOM-06C-H2 2 MB –40 ~105 15.8 × 20.3 × 2.7

ESP8684-WROOM-06C-H4 4 MB

Suhu ambient nangtukeun kisaran suhu lingkungan anu disarankeun langsung di luar modul Espressif.

The ESP8684H2 chip and the ESP8684H4 chip fall into the same category, namely the ESP8684 chip series.The
ESP8684 series of chips has a 32-bit RISC-V single-core processor. They integrate a rich set of peripherals, including UART, I2C, LED PWM controller, general DMA controller, temperature sensor, SAR ADC, etc.
Catetan:
* For more information on ESP8684 chip, please refer to ESP8684 Series Datasheet.

Harti Pin

Pin Layout
Diagram pin di handap nembongkeun perkiraan lokasi pin on modul nu.

Pin Pedaran

The module has 22 pins. See pin definitions in Table 2, Pin Definitions.

For peripheral pin configurations, please refer to the ESP8684 Series Datasheet.

Ngaran	No.	Tipe1	Fungsi
IO1	1	I/O/T	GPIO1, ADC1_CH1
IO2	2	I/O/T	GPIO2, ADC1_CH2, FSPIQ
NC	3	—	NC
NC	4	—	NC
IO0	5	I/O/T	GPIO0, ADC1_CH0
RX0	6	I/O/T	GPIO19, U0RXD
TX0	7	I/O/T	GPIO20, U0TXD
IO3	8	I/O/T	GPIO3, ADC1_CH3, LED PWM
IO7	9	I/O/T	GPIO7, FSPID, MTDO, LED PWM
IO6	10	I/O/T	GPIO6, FSPICLK, MTCK, LED PWM
IO4	11	I/O/T	GPIO4, ADC1_CH4, FSPIHD, MTMS, LED PWM
IO5	12	I/O/T	GPIO5, FSPIWP, MTDI, LED PWM
GND	13	P	taneuh
3V3	14	P	Sasayogian tanaga
IO18	15	I/O/T	GPIO18
IO10	16	I/O/T	GPIO10, FSPICS0
NC	17	—	NC
EN	18	I	High: One enables the chip. Low: off, The chip powers off. Default: internally pulled up.
NC	19	—	NC
IO9 2	20	I/O/T	GPIO9
IO8	21	I/O/T	GPIO8
EPAD	22	P	taneuh

P: catu daya; I: input; O: kaluaran; T: impedansi tinggi.
This pin can be used as a test point.
Catetan:
IO0, IO1, IO3, and IO5/MTDI pins have low-level glitches during chip power-up. See details in the section General Purpose Input / Output Interface (GPIO) of the ESP8684 Series Datasheet.

Mimitian

Naon nu peryogi
To develop applications for the module, you need:

1 x ESP8684-WROOM-06C
1 x papan uji Espressif RF

1 x USB-to-Serial dewan
1 x kabel Micro-USB
1 x PC ngajalankeun Linux
Dina pituduh pangguna ieu, urang nyandak sistem operasi Linux salaku example. For more information about the configuration on Windows and macOS, please refer to the ESP-IDF Programming Guide.

Sambungan Hardware

Solder modul ESP8684-WROOM-06C ka papan uji RF sapertos anu dipidangkeun dina Gambar 2.

Sambungkeun papan uji RF ka papan USB-to-Serial liwat TXD, RXD, sareng GND.
Sambungkeun papan USB-to-Serial ka PC.
Connect the RF testing board to the PC or a power adapter to enable a 5 V power supply via the Micro-USB cable.

Salila ngundeur, sambungkeun IO0 ka GND via jumper a. Teras, hurungkeun "ON" papan uji.
Download firmware into the flash. For details, see the sections below.
Saatos diunduh, cabut jumper dina IO0 sareng GND.

Hurungkeun deui papan uji RF. modul bakal pindah ka modeu gawé. Chip bakal maca program ti flash kana initialization.
Catetan:
IO0 is internally logic high. If IO0 is set to pull-up, the Boot mode is selected. If this pin is pulled down or left floating, the Download mode is selected. For more information on ESP8684-WROOM-06C, please refer to the ESP8684 Series Datasheet.

Nyetél Lingkungan Pangwangunan

The Espressif IoT Development Framework (ESP-IDF for short) is a framework for developing applications based on the Espressif ESP32. Users can develop applications with ESP8684 in Windows/Linux/macOS based on ESP-IDF. Here we take the Linux operating system as an example.

Pasang Prasyarat
To compile with ESP-IDF, you need to get the following packages:

CentOS 7 & 8:
Ubuntu jeung Debian:
Lengkungan:

Catetan:
- Pituduh ieu nganggo diréktori ~/esp dina Linux salaku polder pamasangan pikeun ESP-IDF.
- Émut yén ESP-IDF henteu ngadukung rohangan dina jalur.

Kéngingkeun ESP-IDF

To build applications for the ESP8684-WROOM-06C module, you need the software libraries provided by Espressif in the ESP-IDF repository.
Pikeun kéngingkeun ESP-IDF, jieun diréktori pamasangan (~/esp) pikeun ngaunduh ESP-IDF sareng clone gudang nganggo 'git clone':

ESP-IDF bakal diunduh kana ~/esp/esp-idf. Taroskeun versi ESP-IDF kanggo inpormasi ngeunaan versi ESP-IDF mana anu dianggo dina kaayaan anu tangtu.

Nyetél Pakakas
Salian ti ESP-IDF, anjeun ogé kedah masang alat anu dianggo ku ESP-IDF, sapertos kompiler, debugger, pakét Python, jsb. ESP-IDF nyayogikeun skrip anu namina 'install.sh' pikeun ngabantosan nyetél alat dina hiji lebet.

Nyetél Variabel Lingkungan
The installed tools have not yet been added to the PATH environment variable. To make the tools usable from the command line, some environment variables must be set. ESP-IDF provides another script,’ export.sh’, which does that. In the terminal where you are going to use ESP-IDF, run:

Now everything is ready, you can build your first project on the ESP8684-WROOM-06C module.

Jieun Proyék Mimiti Anjeun

Mimitian Proyék

Ayeuna anjeun siap nyiapkeun aplikasi anjeun pikeun modul ESP8684-WROOM-06C. Anjeun tiasa mimitian ku ngamimitian / hello_world proyék ti exampdiréktori les di ESP-IDF.
Salin ngamimitian/hello_world ka ~/esp diréktori:
Aya rentang example proyék di exampdiréktori les di ESP-IDF. Anjeun tiasa nyalin proyék naon waé dina cara anu sami sareng anu dipidangkeun di luhur sareng ngajalankeunana. Ieu oge mungkin pikeun ngawangun examples di tempat, tanpa nyalin aranjeunna munggaran.

Sambungkeun Alat Anjeun
Now connect your module to the computer and check under which serial port the module is visible. Serial ports in Linux start with ‘/dev/tty’ in their names. Run the command below two times, first with the board unplugged, then with it plugged in. The port that appears the second time is the one you need:

Catetan:
Tetep nami port gunana sabab anjeun peryogi dina léngkah-léngkah salajengna.

Konpigurasikeun

Navigate to your ‘hello_world’ directory from Step 3.4.1. Start a Project, set ESP8684 chip as the target, and run the project configuration utility ‘menuconfig’.
Setting the target with ‘idf.py set-target ESP8684’ should be done once, after opening a new project. If the project contains some existing builds and configurations, they will be cleared and initialized. The target may be saved in an environment variable to skip this step all. See Selecting the Target for additional information.

Upami léngkah-léngkah saacanna parantos leres, ménu di handap ieu némbongan:
You are using this menu to set up project-specific variables, e.g., Wi-Fi network name and password, the processor speed, etc. Setting up the project with menuconfig may be skipped for “hello_world”. This example will run with the default configuration.

Warna ménu tiasa bénten dina terminal anjeun. Anjeun tiasa ngarobih penampilan kalayan pilihan '-̉-style'̉. Punten jalankeun 'idf.py menuconfig -̉-help'̉ kanggo inpormasi salajengna.

Ngawangun Proyék

Ngawangun proyék ku ngajalankeun:
Paréntah ieu bakal nyusun aplikasi sareng sadaya komponén ESP-IDF, teras bakal ngahasilkeun bootloader, tabel partisi, sareng binari aplikasi.

Mun euweuh kasalahan, ngawangun bakal rengse ku generating firmware binér .bin file.

Flash kana Alat

Flash binari anu anjeun nembé diwangun kana modul anjeun ku ngajalankeun:
Ganti PORT sareng nami port serial dewan ESP8684 anjeun tina Lengkah: Sambungkeun Alat anjeun.
You can also change the flash baud rate by replacing BAUD with the baud rate you need. The default baud rate is 460800.

Kanggo inpo nu langkung lengkep ihwal argumen idf.py, tingali idf.py.
Catetan:
Pilihan 'flash' otomatis ngawangun sareng kedip-kedip proyek, janten ngajalankeun 'idf.py build' henteu diperyogikeun.
Nalika kedip-kedip, anjeun bakal ningali log kaluaran sapertos kieu:

Upami teu aya masalah dina ahir prosés flash, dewan bakal reboot sareng ngamimitian aplikasi "hello_world".

Ngawaskeun

Pikeun pariksa naha "hello_world" leres-leres jalan, ketik 'idf.py -p PORT monitor' (Ulah hilap ngagentos PORT sareng nami port serial anjeun).

Paréntah ieu ngaluncurkeun aplikasi IDF Monitor:
Saatos ngamimitian sareng log diagnostik ngagulung ka luhur, anjeun kedah ningali "Halo dunya!" dicitak kaluar ku aplikasi.
To exit IDF monitor, use the shortcut Ctrl+].
That’s all you need to get started with the ESP8684-WROOM-06C module! Now you are ready to try some other examples in ESP-IDF, or go right to develop your applications.

Pernyataan FCC AS

Alatna saluyu sareng KDB 996369 D03 OEM Manual v01. Di handap ieu aya parentah integrasi pikeun pabrik produk host nurutkeun KDB 996369 D03 OEM Manual v01.

Daptar Aturan FCC lumaku
FCC Bagian 15 Subbagian C 15.247

Kaayaan Pamakéan Operasional Spésifik
modul ngabogaan WiFi jeung BLE fungsi.

Frékuénsi operasi:
- Wifi: 2412 ~ 2462 MHz
- Bluetooth: 2402 ~ 2480 MHz

Jumlah Saluran:
- Wifi: 11
- Bluetooth: 40

Modulasi:
- Wifi: DSSS; OFDM
- Bluetooth: GFSK;
Tipe: On-board PCB Anteneu
Keuntungan: 2.7 dBi Max
The module can be used for IoT applications with a maximum 2.7 dBi antenna. The host manufacturer installing this module into their product must ensure that the final composite product complies with the FCC requirements by a technical assessment or evaluation of the FCC rules, including the transmitter operation. The host manufacturer has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual of the end product that integrates this module. The end user manual shall include all required regulatory information/warnings as shown in this manual.

Prosedur Modul kawates
Not applicable. The module is a single module and complies with the requirements of FCC Part 15.212.

Ngabasmi Desain Antenna
Not applicable. The module has its antenna, and does not need a host’s printed board microstrip trace antenna, etc.

Pertimbangan Paparan RF
The module must be installed in the host equipment such that at least 20cm is maintained between the antenna and users’ body; and if RF exposure statement or module layout is changed, then the host product manufacturer is required to take responsibility for the module through a change in the FCC ID or a new application. The FCC ID of the module cannot be used on the final product. In these circumstances, the host manufacturer will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization.

anteneu

Spésifikasi anteneu nyaéta kieu:
- Tipe: Antena PCB
- Keuntungan: 2.7 dBi
Alat ieu ngan dimaksudkeun pikeun pabrik host dina kaayaan ieu:
- Modul pamancar moal tiasa dipasangkeun sareng pamancar atanapi anteneu sanés.
- The module shall be used only with the external antenna(s) that have been originally tested and certified with this module.
- Antena kedah dipasang sacara permanén atanapi nganggo gandeng anteneu 'unik'.
Salami kaayaan di luhur kacumponan, tés pamancar salajengna moal diperyogikeun. Tapi, produsén host tetep tanggung jawab pikeun nguji produk ahirna pikeun sarat patuh tambahan anu diperyogikeun sareng modul ieu dipasang (pikeun ex.ample, émisi alat digital, syarat periferal PC, jsb).

Émbaran labél jeung minuhan
Pabrikan produk host kedah nyayogikeun labél fisik atanapi e-label anu nyatakeun "Ngandung ID FCC: 2AC7Z-ESP868406C" sareng produk réngséna.

Inpormasi ngeunaan modeu tés sareng syarat tés tambahan

Frékuénsi operasi:
- Wifi: 2412 ~ 2462 MHz
- Bluetooth: 2402 ~ 2480 MHz
Jumlah Saluran:
- Wifi: 11
- Bluetooth: 40
Modulasi:
- Wifi: DSSS; OFDM
- Bluetooth: GFSK;
  Pabrikan host kedah ngalaksanakeun tés émisi anu dipancarkeun sareng dilakukeun sareng émisi palsu, sareng sajabana, numutkeun modeu uji saleresna pikeun pamancar modular anu mandiri dina host, ogé pikeun sababaraha modul anu ngirimkeun sakaligus atanapi pamancar anu sanés dina produk host. Ngan nalika sadaya hasil tés tina modeu tés saluyu sareng syarat FCC, maka produk ahirna dijual sacara sah.

Tés tambahan, Bagian 15 Subpart B patuh

The modular transmitter is only FCC authorized for FCC Part 15 Subpart C 15.247, and the host product manufacturer is responsible for compliance with any other FCC rules that apply to the host not covered by the modular transmitter grant of certification. If the grantee markets their product as being Part 15 Subpart B compliant (when it also contains unintentional-radiator digital circuitry), then the grantee shall provide a notice stating that the final host product still requires Part 15 Subpart B compliance testing with the modular transmitter installed.
Alat ieu geus diuji sarta kapanggih matuh ka wates pikeun alat digital Kelas B, dina Bagian 15 Aturan FCC. Watesan ieu dirarancang pikeun nyayogikeun panyalindungan anu wajar tina gangguan anu ngabahayakeun dina pamasangan padumukan. Alat ieu ngahasilkeun, ngagunakeun, sareng tiasa mancarkeun énérgi frekuensi radio sareng, upami henteu dipasang sareng dianggo nurutkeun petunjuk, tiasa nyababkeun gangguan anu ngabahayakeun kana komunikasi radio.
Nanging, teu aya jaminan yén gangguan moal lumangsung dina pamasangan khusus. Upami alat ieu nyababkeun gangguan anu ngabahayakeun kana panarimaan radio atanapi televisi, anu tiasa dipastikeun ku cara mareuman sareng ngaktipkeun alat, pangguna didorong nyobian ngabenerkeun gangguan ku salah sahiji ukuran ieu:
- Reorient atawa mindahkeun anteneu panarima.
- Ningkatkeun separation antara alat jeung panarima.
- Sambungkeun alat-alat ka stop kontak dina sirkuit béda ti nu disambungkeun ka panarima.
- Taroskeun ka dealer atanapi teknisi radio/TV anu berpengalaman pikeun pitulung.
Alat ieu saluyu sareng Bagian 15 Aturan FCC. Operasi tunduk kana dua kaayaan ieu:
- Alat ieu moal ngabalukarkeun gangguan anu ngabahayakeun.
- Alat ieu kedah nampi sagala gangguan anu katampi, kalebet gangguan anu tiasa nyababkeun operasi anu teu dipikahoyong.
  Awas:
  Sagala parobahan atawa modifikasi teu dinyatakeun disatujuan ku pihak jawab minuhan bisa batal wewenang pamaké pikeun beroperasi alat.
Alat ieu saluyu sareng wates paparan radiasi FCC RF anu ditetepkeun pikeun lingkungan anu teu terkendali. Alat ieu sareng anteneuna henteu kedah ditempatkeun atanapi dioperasikeun sareng anteneu atanapi pamancar anu sanés. Anteneu anu dianggo pikeun pamancar ieu kedah dipasang pikeun nyayogikeun jarak pamisahan sahenteuna 20 cm ti sadayana jalma sareng henteu kedah ditempatkeun atanapi beroperasi babarengan sareng anteneu atanapi pamancar anu sanés.

Parentah Integrasi OEM
Alat ieu ngan dimaksudkeun pikeun integrator OEM dina kaayaan ieu:

Modul pamancar moal tiasa dipasangkeun sareng pamancar atanapi anteneu sanés.
The module shall be used only with an antenna that has been originally tested and certified with this module.
Salami kaayaan di luhur kacumponan, tés pamancar salajengna moal diperyogikeun. Tapi, integrator OEM tetep tanggung jawab pikeun nguji produk ahirna pikeun sarat patuh tambahan anu diperyogikeun sareng modul ieu dipasang (pikeun ex.ample, émisi alat digital, syarat periferal PC, jsb).

Validitas Ngagunakeun Sertifikasi Modul
Lamun kaayaan ieu teu bisa minuhan (contonaample, certain laptop configurations or co-location with another transmitter), then the FCC authorization for this module in combination with the host equipment is no longer considered valid, and the FCC ID of the module cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization.

Labeling Produk Tungtung
The end product must be labeled in a visible area with the following: “Contains Transmitter Module FCC ID: 2AC7Z-ESP868406C”.

Bantahan sareng Bewara Hak Cipta

Inpormasi dina dokumén ieu, kalebet URL rujukan, bisa dirobah tanpa aya bewara.
ALL THIRD-PARTY INFORMATION IN THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES OF ITS AUTHENTICITY AND ACCURACY.
NO WARRANTY IS PROVIDED TO THIS DOCUMENT FOR ITS MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, NOR DOES ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION, OR SAMPLE.
Sadaya tanggung jawab, kalebet tanggung jawab pikeun ngalanggar hak proprietary, anu aya hubunganana sareng pamakean inpormasi dina dokumén ieu ditolak. Henteu aya lisénsi anu dinyatakeun atanapi tersirat, ku estoppel atanapi sanés, kana hak cipta intelektual anu dipasihkeun di dieu.
Logo Anggota Wi-Fi Alliance mangrupakeun mérek dagang ti Wi-Fi Alliance. Logo Bluetooth mangrupakeun mérek dagang kadaptar ti Bluetooth SIG.
All trade names, trademarks, a nd registered trademarks mentioned in this document are the property of their respective owners and are hereby acknowledged.

Patarosan anu Sering Ditaroskeun (FAQ)

Can I use both Wi-Fi and Bluetooth functionalities simultaneously on the ESP8684-WROOM-06C?
Yes, the module supports both Wi-Fi and Bluetooth functionalities concurrently, enabling various applications that require dual wireless capabilities.
What is the recommended ambient temperature range for operating the ESP8684-WROOM-06C?
The recommended ambient temperature range for the module is specified in the datasheet and should be adhered to for optimal performance and longevity.

Dokumén / Sumberdaya

ESPRESSIF SYSTEMS ESP8684-WROOM-060 ESP32 C2 Module [pdf] Manual pamaké
2AC7Z-ESP868406C, 2AC7ZESP868406C, esp868406c, ESP8684-WROOM-060 ESP32 C2 Module, ESP8684-WROOM-060, ESP32 C2 Module, C2 Module

Rujukan

Manual pamaké

ESPRESSIF SYSTEMS ESP8684-WROOM-060 ESP32 C2 Module

Spésifikasi produk

Parentah Pamakéan Produk

Mimitian

Jieun Proyék Mimiti Anjeun

Modul Leuwihview

Fitur

Harti Pin

Mimitian

Nyetél Lingkungan Pangwangunan

Jieun Proyék Mimiti Anjeun

Pernyataan FCC AS

Related Documentation and Resources Related Documentation

Bantahan sareng Bewara Hak Cipta

Patarosan anu Sering Ditaroskeun (FAQ)

Dokumén / Sumberdaya

Rujukan

Ninggalkeun komentar

Ngabolaykeun reply

Kode pesenan	Flash Dina-Pakét	Ambient Temp.1 (°C)	Ukuran (mm)
ESP8684-WROOM-06C-H2	2 MB	–40 ~105	15.8 × 20.3 × 2.7
ESP8684-WROOM-06C-H4	4 MB	–40 ~105	15.8 × 20.3 × 2.7