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PIC16F628A 18-Pin 2kB Microcontroller Datasheet

Photograph
PIC16F628A-I/P - PIC16F628A Flash 18-pin 20MHz 2kB 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
    • - 2K Flash Program Memory
    • - 224 Byte RAM Data Memory
    • - 128 Byte EEPROM Data Memory
    • - In-circuit Serial Programming
  • Peripheral Features
    • - Universal Synchronous/Asynchronous Receiver/Transmitter (USART)
    • - Two 8-bit timer/counter(TMR0,TMR2) with 8-bit programmable prescalar
    • - One 16 bit timer/counter
    • - High current source/sink for direct LED drive
    • - Two Analog Comparators
    • - Capture/Compare PWM (CCP) Module
    • - 16 Bytes of common RAM
  • Special Microcontroller Features
    • - Power-On Reset
    • - Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST)
    • - Brown-out Detect (BOD)
    • - Selectable Oscillator Options
    • - Watchdog Timer with separate RC oscillator
  • CMOS Technology
    • - Low power, high speed CMOS FLASH technology
    • - Fully Static Design
    • - Low Power Consumption
    •    < 2mA @ 5V, 4MHz
    •    15µA typical @ 3V, 32kHz
    •    < 1µA typical standby current
  • I/O and Packages
    • - 15 I/O pins with individual direction control
    • - 18-pin DIP

Pin Layout
PIC16F628 Pin Layout

Pin Description
Pin Number Description
1 RA2/AN2/Vref - Port A
2 RA3/AN3/CMP1 - Port A
3 RA4/TOCK1/CMP2 - Port A
4 RA5/MCLR/THV - Port A
5 Vss - Ground
6 RB0/INT - Port B
7 RB1/RX/DT - Port B
8 RB2/TX/CK - Port B
9 RB3/CCP1 - Port B
10 RB4/PGM - Port B
11 RB5 - Port B
12 RB6/T1OSO/T1CK1 - Port B
13 RB7/T1OS1 - Port B
14 Vdd - Positive Power Supply
15 RA6/OSC2/CLKOUT - Port A
16 RA7/OSC1/CLKIN - Port A
17 RA0/AN0 - Port A
18 RA1/AN1 - Port A

Dimensional Drawing
PIC16F628 IC Dimensional Drawing