
PIC16F684

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

Low-Power Features:

• Standby Current:
  - 1 nA @ 2.0V, typical
• Operating Current:
  - 8.5µA @ 32 kHz, 2.0V, typical
  - 100µA @ 1 MHz, 2.0V, typical
• Watchdog Timer Current:
  - 1µA @ 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 (ULPWU)
• 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
• 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
• In-Circuit Serial ProgrammingTM (ICSPTM) via two
  pins
