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 – 20 MHz oscillator/clock input

   - DC – 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 ± 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 μA @ 32 kHz, 2.0V, typical

   - 220 μA @ 4 MHz, 2.0V, typical

• Watchdog Timer Current:

   - <1 μA @ 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