Home >
Integrated Circuits >
Microcontrollers >
Microchip >
PIC16
PIC16F877 40-Pin 8kB Microcontroller Datasheet
Photograph

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
- - 8 kBytes Flash Program Memory
- - 368 Byte RAM Data Memory
- - 256 Byte EEPROM Data Memory
- - In-circuit Serial Programming
- - Interrupt Capability (up to 10 sources)
- Peripheral Features
- - Two 8-bit timer/counter(TMR0, TMR2) with 8-bit programmable prescalar
- - One 16 bit timer/counter (TMR1)
- - High current source/sink for direct LED drive
- - Watchdog Timer (WDT) with Separate RC Oscillator
- - Two Capture, Compare, PWM Modules
- - Synchronous Serial Port with SPI and I²C
- - Eight Channel, 10-bit Analog to Digital Converter
- - Universal Synchronous Asynchronous Receiver Transmitter (USART)
- 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
- I/O and Packages
- - 33 I/O pins with individual direction control
- - 40-pin DIP
Pin Layout

Pin Description
Pin Number | Description |
---|---|
1 | MCLR/VPP - Master Clear Input |
2 | RA0/AN0 - Port A |
3 | RA1/AN1 - Port A |
4 | RA2/AN2/VREF-/CVREF - Port A |
5 | RA3/AN3/VREF+ - Port A |
6 | RA4/T0CKI/C1OUT - Port A |
7 | RA5/AN4/SS/C2OUT - Port A |
8 | RE0/RD/AN5 - Port E |
9 | RE1/WR/AN6 - Port E |
10 | RE2/CS/AN7 - Port E |
11 | Vdd - Positive Power Supply |
12 | Vss - Ground |
13 | OSC1/CLKI - Oscillator Input |
14 | OSC2/CLKO - Oscillator Output |
15 | RC0/T1OSO/T1CKI - Port C |
16 | RC1/T1OSI/CCP2 - Port C |
17 | RC2/CCP1 - Port C |
18 | RC3/SCK/SCL - Port C |
19 | RD0/PSP0 - Port D |
20 | RD1/PSP1 - Port D |
21 | RD2/PSP2 - Port D |
22 | RD3/PSP3 - Port D |
23 | RC4/SDI/SDA - Port C |
24 | RC5/SDO - Port C |
25 | RC6/TX/CK - Port C |
26 | RC7/RX/DT - Port C |
27 | RD4/PSP4 - Port D |
28 | RD5/PSP5 - Port D |
29 | RD6/PSP6 - Port D |
30 | RD7/PSP7 - Port D |
31 | Vss - Ground |
32 | Vdd - Positive Power Supply |
33 | RB0/INT - Port B |
34 | RB1 - Port B |
35 | RB2 - Port B |
36 | RB3/PGM - Port B |
37 | RB4 - Port B |
38 | RB5 - Port B |
39 | RB6/PGC - Port B |
40 | RB7/PGD - Port B |
Dimensional Drawing

Technical Data
Datasheet
Microchip Web Site - Datasheet for PIC16F877 |
![]() |
Application Notes
Microchip Web Site - Application Notes for PIC16F877 |
![]() |