Microchip

PIC16F84 - 8 bit Microcontroller with 1 Byte Flash Program Memory and USART

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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 - 1 k Bytes Flash Program Memory - 68 Byte RAM Data Memory - 68 Byte EEPROM Data Memory - In-circuit serial programming - Four Interrupt Sources Peripheral Features - High current sink/source for direct LED Drive - One 8-bit timer/counter(TMR0) with 8-bit programmable prescalar - One 16 bit timer/counter - Watchdog Timer (WDT) with separate RC oscillator Special Microcontroller Features - Power-On Reset - Power-up Timer (PWRT) and Oscillator Start-Up Timer (OST) - 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 - < 2mA @ 5V, 4MHz - 15µA typical @ 3V, 32kHz - < 0.5µA typical standby current I/O and Packages - 13 I/O pins with individual direction control - 18-pin DIP

Pin Description Pin Number Description 1 RA2 - Port A 2 RA3 - Port A 3 RA4/TOCK1 - Port A 4 MCLR - Master clear input (active low) 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

Pin Layout Dimensional Drawing

Technical Data Data Sheet Microchip - Data Sheet for PIC16F8X Application Notes Microchip - PIC Application Notes