Microchip PIC12LF1840T39A Product Brief
High-Performance RISC CPU
- Only 49 Instructions to Learn: All single-cycle instructions except branches
- Operating Speed: DC – 32 MHz oscillator/clock input; DC - 125 ns instruction cycle
- Interrupt Capability with Automatic Context Saving
- 16-Level Deep Hardware Stack with Optional Overflow/Underflow Reset
- Direct, Indirect and Relative Addressing modes: Two full 16-bit File Select Registers (FSRs); FSRs can read program and data memory
Flexible Oscillator Structure
- Precision 32 MHz Internal Oscillator Block: Factory calibrated to ± 1%, typical; Software selectable frequencies range of 31 kHz to 32 MHz
- 31 kHz Low-Power Internal Oscillator
- Four Crystal modes up to 32 MHz
- Three External Clock modes up to 32 MHz
- 4x Phase Lock Loop (PLL)
- Fail-Safe Clock Monitor: Allows for safe shutdown if peripheral clock stops
- Two-Speed Oscillator Start-up
- Reference Clock module: Programmable clock output frequency and duty-cycle
Special Microcontroller Features
- 1.8V-3.6V Operation
- Self-Reprogrammable under Software Control
- Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
- Programmable Brown-out Reset (BOR)
- Extended Watchdog Timer (WDT)
- In-Circuit Serial Programming™ (ICSP™) via Two Pins
- In-Circuit Debug (ICD) via Two Pins
- Enhanced Low-Voltage Programming (LVP)
- Programmable Code Protection
- Power-Saving Sleep mode
Low-Power Features
- Standby Current: 30 nA @ 3.0V, typical, RF off; 530 nA @ 3.0V, typical, RF Sleep
- Operating Current: 0.67 mA @ 8 MHz, 3.0V, RF off, typical; 9.67 mA @ 8 MHz, 3.0V, RF on at 0 dBm, typical; 15.67 mA @ 8 MHz, 3.0V, RF on at +10 dBm, typical
- Low-Power Watchdog Timer Current: 500 nA @ 3.0V, typical
RF Transmitter
- Fully Integrated Transmitter
- FSK Operation up to 100 kbps
- OOK Operation up to 10 kbps
- Frequency-Agile Operation in 310, 433, 868 and 915 MHz Bands
- +10 dBm or 0 dBm Configurable Output Power
Analog Features
- Analog-to-Digital Converter (ADC) module: 10-bit resolution, 4 channels, Conversion available during Sleep
- Analog Comparator module: One rail-to-rail analog comparator, Power mode control, Software controllable hysteresis
- Voltage Reference module: Fixed Voltage Reference (FVR) with 1.024V and 2.048V output levels, 5-bit rail-to-rail resistive DAC with positive and negative reference selection
Peripheral Features
- 5 I/O Pins and 1 Input-only Pin: High current sink/source 25 mA/25 mA, Programmable weak pull-ups, Programmable interrupt-on-change pins
- Timer0: 8-Bit Timer/Counter with 8-Bit Prescaler
- Enhanced Timer1: 16-bit timer/counter with prescaler, External Gate Input mode, Dedicated, low-power 32 kHz oscillator driver
- Timer2: 8-Bit Timer/Counter with 8-Bit Period Register, Prescaler and Postscaler
- Enhanced CCP (ECCP) module: Software selectable time bases, Auto-shutdown and auto-restart, PWM steering
- Master Synchronous Serial Port (MSSP) with SPI and I2C™: 7-bit address masking, SMBus/PMBus™ compatibility
- Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) module: RS-232, RS-485 and LIN compatible, Auto-Baud Detect
- Capacitive Sensing (CPS) module (mTouch™): 4 input channels
- Data Signal Modulator module: Selectable modulator and carrier sources
- SR Latch: Multiple Set/Reset input options, Emulates 555 Timer applications
Feature Summary (Table 1)
| Device | Program Memory Flash (words) | Data Memory EEPROM (Bytes) | Data Memory SRAM (Bytes) | I/Os(1) | 10-bit ADC (ch) | CapSense (ch) | Comparators | Timers (8/16-bit) | EUSART | MSSP (I2C™/SPI) | ECCP (Half-Bridge) | SR Latch | RF Transmitter | Debug(2) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PIC12LF1840T39A | 4K | 256 | 256 | 6 | 4 | 4 | 1 | 2/1 | 1 | 1 | 1 | 1 | Yes | Yes |
Note 1: One pin is input-only.
Note 2: I – Debugging, Integrated on Chip; H – Debugging, Debug Header Available
Note: Pin details are subject to change.
14-Pin Diagram, PIC12LF1840T39A (TSSOP)
The diagram shows a 14-pin TSSOP package. Pin assignments are as follows:
- Pin 1: VDD
- Pin 2: RA5
- Pin 3: RA4
- Pin 4: MCLR/VPP/RA3
- Pin 5: VDDRF
- Pin 6: CTRL
- Pin 7: RFOUT
- Pin 8: VSSRF
- Pin 9: DATA
- Pin 10: XTAL
- Pin 11: RA2
- Pin 12: RA1/ICSPCLK
- Pin 13: RA0/ICSPDAT
- Pin 14: Vss
14-Pin Allocation Table (Table 2)
| Pin Name | I/O | 14-Pin TSSOP | A/D | Reference | CapSense | Comparator | SR Latch | Timers | ECCP | EUSART | MSSP | Interrupt | Modulator | Pull-up | Basic | RF Transmitter |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RA0 | 13 | AN0 | DACOUT | CPS0 | C1IN+ | P1B(1) | TX(1) SDO(1) | IOC | MDOUT | Y | ICSPDAT | |||||
| RA1 | 12 | AN1 | VREF | CPS1 | C1IN0- | SRI | RX(1) DT(1) | SCK | SS(1) | IOC | MDMIN | Y | ICDDAT | |||
| RA2 | 11 | AN2 | CPS2 | C1OUT | SRQ | T0CKI | CCP1(1) P1A(1) FLT0 | SDA SDI | INT | MDCOM1 | Y | ICSPCLK | ||||
| RA3 | 4 | T1G(2) | SS(1) | IOC | Y | MCLR VPP | ||||||||||
| RA4 | 3 | AN3 | CPS3 | C1IN1- | T1G(1) T1OSO | P1B(1) TX(1) CK(1) | SDO(1) IOC | MDCIN2 | Y | OSC2 CLKOUT CLKR | ||||||
| RA5 | 2 | SRNQ T1CKI T1OSI | CCP1(1) P1A(1) RX(1) DT(1) | IOC | Y | OSC1 CLKIN | ||||||||||
| VDD | 1 | VDD | ||||||||||||||
| Vss | 14 | Vss | ||||||||||||||
| CTRL | 6 | CTRL | ||||||||||||||
| RFOUT | 7 | RFOUT | ||||||||||||||
| DATA | 9 | DATA | ||||||||||||||
| XTAL | 10 | XTAL | ||||||||||||||
| VDDRF | 5 | VDDRF | ||||||||||||||
| VSSRF | 8 | VSSRF |
Note 1: Pin function is selectable via the APFCON register.
Revision History
Revision A (03/2012): Initial release of this document.
Code Protection Information
Microchip products meet the specification contained in their particular Microchip Data Sheet. Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable." Code protection is constantly evolving. Microchip is committed to continuously improving the code protection features of its products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
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Microchip name and logo, dsPIC, KEELOQ, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL, The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, chipKIT, CodeGuard, dsPICDEM, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies.
© 2012, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper.
ISBN: 9781620761120
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Microchip: PIC12LF1840T39A-I/ST, PIC12LF1840T39AT-I/ST
