The PIC16F range of microcontrollers from Microchip are 8-bit MCUs that incorporate Microchip’s PIC® architecture into a variety of pin and package options, from space efficient 14-pin devices to feature-rich 64-pin devices. Devices with Baseline, Mid-Range or Enhanced Mid-Range architecture are available with numerous different peripheral combinations, giving designers flexibility and choice for their applications.

The PIC16F631/677/685/687/689/690 family of microcontrollers is based upon Microchip’s Mid-range core with an 8 level deep hardware stack and 35 instructions. These MCUs provide up to 5 MIPS, up to 7 Kbytes program memory, up to 256 bytes RAM and Data EEPROM of up to 256 bytes. On board is a configurable oscillator factory calibrated to ±1% accuracy.

20 MHz Max. CPU Speed
35 Instructions
8 Level Hardware Stack
8 MHz Internal Oscillator – Selectable frequency range 8 MHz to 32 kHz
18 I/O Pins
Power-On Reset (POR)
Power-Up Timer (PWRT)
Oscillator Start-Up Timer (OST)
Brown-Out Reset (BOR)
Watchdog Timer (WDT)
In-Circuit Serial Programming (ICSP)

12 Channel 10-bit Analogue to Digital Converter (ADC) – PIC16F677/685/687/689/690 Models Only
Two Comparators
8-bit Timer – PIC16F631/677/687/689 Models x 1, PIC16F685/690 Models x 2
One 16-bit Timer
Enhanced Capture, Compare, PWM Module – PIC16F685/690 Models Only
Synchronous Serial Port (SSP) – PIC16F677/687/689/690 Models Only
Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART) – PIC16F687/689/690 Models Only