
PIC16F688

14-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

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 31 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 (PWRT) and Oscillator Start-up
  Timer (OST)
 Brown-out Detect (BOD) 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 with pull-up/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

ow-Power Features

 Standby Current:
  - 1 nA @ 2.0V, typical
 Operating Current:
  - 8.5A @ 32 kHz, 2.0V, typical
  - 100A @ 1 MHz, 2.0V, typical
 Watchdog Timer Current:
  - 1A @ 2.0V, typical

Peripheral Features

 12 I/O pins with individual direction control:
    - High-current source/sink for direct LED drive
    - Interrupt-on-pin change
    - Individually programmable weak pull-ups
    - Ultra Low-Power Wake-up
 Analog comparator module with:
  - Two analog comparators
  - Programmable on-chip voltage reference
    (CVREF) module (% of VDD)
  - Comparator inputs and outputs externally
    accessible
 A/D Converter:
  - 10-bit resolution and 8 channels
 Timer0: 8-bit timer/counter with 8-bit
  programmable prescaler
 Enhanced Timer1:
  - 16-bit timer/counter with prescaler
  - External Gate Input mode
  - Option to use OSC1 and OSC2 in LP mode as
    Timer1 oscillator if INTOSC mode selected
 Enhanced USART Module:
  - Supports RS-485, RS-232, and LIN 1.2
  - Auto baud detect
  - Auto-wake-up on Start bit
 In-Circuit Serial Programming (ICSP) via two
  pins