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DEVICE OVERVIEW

The PIC16F631/677/685/687/689/690 devices are covered by this data sheet. They are available in 20-pin PDIP, SOIC, TSSOP and QFN packages.

High-Performance RISC CPU:

? Only 35 Instructions to Learn:

- All single-cycle instructions except branches

? Operating Speed:

- DC ¨C 20 MHz oscillator/clock input

- DC ¨C 200 ns instruction cycle

? Interrupt Capability

? 8-Level Deep Hardware Stack

? Direct, Indirect and Relative Addressing modes

Special Microcontroller Features:

? Precision Internal Oscillator:

- Factory calibrated to ¡À 1%

- Software selectable frequency range of 8 MHz to 32 kHz

- Software tunable

- Two-Speed Start-up mode

- Crystal fail detect for critical applications

- Clock mode switching during operation for power savings

? Power-Saving Sleep mode

? Wide Operating Voltage Range (2.0V-5.5V)

? Industrial and Extended Temperature Range

? Power-on Reset (POR)

? Power-up Timer (PWRTE) and Oscillator Start-up Timer (OST)

? Brown-out Reset (BOR) with Software Control Option

? Enhanced Low-Current Watchdog Timer (WDT) with On-Chip Oscillator (Software selectable nominal 268 Seconds with Full Prescaler) with Software Enable

? Multiplexed Master Clear/Input Pin

? Programmable Code Protection

? High Endurance Flash/EEPROM Cell:

- 100,000 write Flash endurance

- 1,000,000 write EEPROM endurance

- Flash/Data EEPROM retention: > 40 years

? Enhanced USART Module:

- Supports RS-485, RS-232 and LIN 2.0

- Auto-Baud Detect

- Auto-wake-up on Start bit

Low-Power Features:

? Standby Current:

- 50 nA @ 2.0V, typical

? Operating Current:

- 11 ¦ÌA @ 32 kHz, 2.0V, typical

- 220 ¦ÌA @ 4 MHz, 2.0V, typical

? Watchdog Timer Current:

- <1 ¦ÌA @ 2.0V, typical

Peripheral Features:

? 17 I/O Pins and 1 Input-Only Pin:

- High current source/sink for direct LED drive

- Interrupt-on-Change pin

- Individually programmable weak pull-ups

- Ultra Low-Power Wake-up (ULPWU)

? Analog Comparator Module with:

- Two analog comparators

- Programmable on-chip voltage reference (CVREF) module (% of VDD)

- Comparator inputs and outputs externally accessible

- SR Latch mode

- Timer 1 Gate Sync Latch

- Fixed 0.6V VREF

? A/D Converter:

- 10-bit resolution and 12 channels

? Timer0: 8-bit Timer/Counter with 8-bit Programmable Prescaler

? Enhanced Timer1:

- 16-bit timer/counter with prescaler

- External Timer1 Gate (count enable)

- Option to use OSC1 and OSC2 in LP mode as Timer1 oscillator if INTOSC mode selected

? Timer2: 8-bit Timer/Counter with 8-bit Period Register, Prescaler and Postscaler

? Enhanced Capture, Compare, PWM+ Module:

- 16-bit Capture, max resolution 12.5 ns

- Compare, max resolution 200 ns

- 10-bit PWM with 1, 2 or 4 output channels, programmable ¡°dead time¡±, max frequency 20 kHz

- PWM output steering control

? Synchronous Serial Port (SSP):

- SPI mode (Master and Slave)

? I2C? (Master/Slave modes):

- I2C? address mask

? In-Circuit Serial ProgrammingTM (ICSPTM) via Two Pins