
PIC16F84A

18-pin Enhanced FLASH/EEPROM 8-Bit Microcontroller

High Performance RISC CPU Features:

 Only 35 single word instructions to learn
 All instructions single-cycle except for program
  branches which are two-cycle
 Operating speed: DC - 20 MHz clock input
  DC - 200 ns instruction
 1024 words of program memory
 68 bytes of Data RAM
 64 bytes of Data EEPROM
 14-bit wide instruction words
 8-bit wide data bytes
 15 Special Function Hardware registers
 Eight-level deep hardware stack
 Direct, indirect and relative addressing modes
 Four interrupt sources:
  - External RB0/INT pin
  - TMR0 timer overflow
  - PORTB<7:4> interrupt-on-change
  - Data EEPROM write complete

Peripheral Features:

 13 I/O pins with individual direction control
 High current sink/source for direct LED drive
  - 25 mA sink max. per pin
  - 25 mA source max. per pin
 TMR0: 8-bit timer/counter with 8-bit
  programmable prescaler

Special Microcontroller Features:

 10,000 erase/write cycles Enhanced FLASH
  Program memory typical
 10,000,000 typical erase/write cycles EEPROM
  Data memory typical
 EEPROM Data Retention > 40 years
 In-Circuit Serial Programming (ICSP) - via
  two pins
 Power-on Reset (POR), Power-up Timer (PWRT),
  Oscillator Start-up Timer (OST)
 Watchdog Timer (WDT) with its own On-Chip RC
  Oscillator for reliable operation
 Code protection
 Power saving SLEEP mode
 Selectable oscillator options

CMOS Enhanced FLASH/EEPROM Technology:

 Low power, high speed technology
 Fully static design
 Wide operating voltage range:
  - Commercial: 2.0V to 5.5V
  - Industrial: 2.0V to 5.5V
 Low power consumption:
  - < 2 mA typical @ 5V, 4 MHz
  - 15 mA typical @ 2V, 32 kHz
  - < 0.5 mA typical standby current @ 2V
