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Home >  Integrated Circuits >  Microcontrollers >  Microchip >  PIC16


PIC16F84A 18-Pin 1kB Microcontroller Datasheet

Photograph
PIC16F84A-20/P - PIC16F84A Flash 18-pin 20MHz 1kB Microcontroller

Features
  • High-Performance RISC CPU
    • - Only 35 single word instructions to learn
    • - All instructions are single cycle (1µs) except for program branches
    • - Operating speed: DC - 20MHz clock input
    • - 1K Flash Program Memory
    • - 68 Byte RAM Data Memory
    • - 68 Byte EEPROM Data Memory
    • - In-circuit Serial Programming
    • - Four Interrupt Sources
  • Peripheral Features
    • - One 8-bit timer/counter(TMR0) with 8-bit programmable prescalar
    • - One 16 bit timer/counter
    • - High current source/sink for direct LED drive
  • Special Microcontroller Features
    • - Power-On Reset
    • - Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST)
    • - Brown-out Detect (BOD)
    • - Watchdog Timer with separate RC oscillator
    • - 1,000 erase/write cycles Enhanced Flash Program Memory
    • - 1,000,000 typical erase/write cycles EEPROM Data Memory
    • - Selectable Oscillator Options
  • CMOS Technology
    • - Low power, high speed CMOS FLASH technology
    • - Fully Static Design
    • - Low Power Consumption
  • I/O and Packages
    • - 13 I/O pins with individual direction control
    • - 18-pin DIP

Pin Layout
PIC16F84 Pin Layout

Pin Description
Pin Number Description
1 RA2 - Port A
2 RA3 - Port A
3 RA4/TOCK1 - Port A
4 MCLR - Master Clear Input
5 Vss - Ground
6 RB0/INT - Port B
7 RB1 - Port B
8 RB2 - Port B
9 RB3 - Port B
10 RB4 - Port B
11 RB5 - Port B
12 RB6 - Port B
13 RB7 - Port B
14 Vdd - Positive Power Supply
15 OSC2/CLKOUT - Oscillator Output
16 OSC1/CLKIN - Oscillator Input
17 RA0 - Port A
18 RA1 - Port A

Dimensional Drawing
PIC16F84 IC Dimensional Drawing