⚡ Install this component

Paste this into Claude Code (VS Code panel, Adom editor, or terminal) to install:

Search the Adom Wiki for the library component "PIC16F877A" (slug: pic16f877a) at https://wiki-ufypy5dpx93o.adom.cloud/wiki/libraries/pic16f877a. Pull down the KiCad symbol, footprint, and 3D model files from the wiki page's assets. Install them into my current KiCad project and register in sym-lib-table and fp-lib-table. If the page has a datasheet URL, save that too.

Manufacturer Microchip

Package DIP-40

Pins 40 pins (Port A, Port B, Port C, Port D, Port E, System, Power)

Library View

Interactive symbol, footprint, and 3D model — hover pins for cross-highlighting.

SymbolGenerated Generated from pin data (KiCad symbol MCU_Microchip_PIC16/PIC16F877A-IP is extends-based)

FootprintKiCad KiCad standard library: Package_DIP/DIP-40_W15.24mm

3DGenerated Generated pad visualization (Babylon.js)

Breakout Board

Auto-generated breakout molecule for PIC16F877A — all pins brought to 2mm-pitch headers with 4 corner machine pins on 8mm grid.

Pricing & Availability

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Check Availability / Request Quote

DigiKey Not available

JLCPCB Not available

Pin Configuration

Port APort BPort CPort DPort ESystemPower

Pin	Name	Group	Function
Port A — RA0-RA5 / ADC / comparator
2	RA0/AN0	Port A	GPIO / ADC channel 0
3	RA1/AN1	Port A	GPIO / ADC channel 1
4	RA2/AN2/VREF-	Port A	GPIO / ADC channel 2 / Neg reference
5	RA3/AN3/VREF+	Port A	GPIO / ADC channel 3 / Pos reference
6	RA4/T0CKI	Port A	GPIO / Timer0 external clock
10	RE2/AN7/CS	Port A	GPIO / ADC channel 7 / PSP chip select
Port B — RB0-RB7 / interrupt / ICSP
33	RB0/INT	Port B	GPIO / External interrupt
34	RB1	Port B	GPIO
35	RB2	Port B	GPIO
36	RB3/PGM	Port B	GPIO / Low-voltage programming
37	RB4	Port B	GPIO / Interrupt-on-change
38	RB5	Port B	GPIO / Interrupt-on-change
39	RB6/PGC	Port B	GPIO / ICSP clock
40	RB7/PGD	Port B	GPIO / ICSP data
Port C — RC0-RC7 / Timer / SPI / UART
15	RC0/T1OSO/T1CKI	Port C	GPIO / Timer1 osc out / Timer1 ext clock
16	RC1/T1OSI/CCP2	Port C	GPIO / Timer1 osc in / Capture/Compare 2
17	RC2/CCP1	Port C	GPIO / Capture/Compare/PWM 1
18	RC3/SCK/SCL	Port C	GPIO / SPI clock / I2C clock
23	RC4/SDI/SDA	Port C	GPIO / SPI data in / I2C data
24	RC5/SDO	Port C	GPIO / SPI data out
25	RC6/TX/CK	Port C	GPIO / USART transmit / Sync clock
26	RC7/RX/DT	Port C	GPIO / USART receive / Sync data
Port D — RD0-RD7 / PSP
19	RD0/PSP0	Port D	GPIO / Parallel slave port bit 0
20	RD1/PSP1	Port D	GPIO / Parallel slave port bit 1
21	RD2/PSP2	Port D	GPIO / Parallel slave port bit 2
22	RD3/PSP3	Port D	GPIO / Parallel slave port bit 3
27	RD4/PSP4	Port D	GPIO / Parallel slave port bit 4
28	RD5/PSP5	Port D	GPIO / Parallel slave port bit 5
29	RD6/PSP6	Port D	GPIO / Parallel slave port bit 6
30	RD7/PSP7	Port D	GPIO / Parallel slave port bit 7
Port E — RE0-RE2 / ADC
7	RA5/AN4/SS	Port E	GPIO / ADC channel 4 / SPI slave select
8	RE0/AN5/RD	Port E	GPIO / ADC channel 5 / PSP read
9	RE1/AN6/WR	Port E	GPIO / ADC channel 6 / PSP write
System — Reset and oscillator
1	MCLR/VPP	System	Master clear / Programming voltage
13	OSC1/CLKIN	System	Oscillator input
14	OSC2/CLKOUT	System	Oscillator output
Power — Supply and ground
11	VDD	Power	Positive supply
12	VSS	Power	Ground
31	VSS	Power	Ground
32	VDD	Power	Positive supply

AI Skill Technical Reference

Edit AI Skill

PIC16F877A — 8-bit PIC MCU, 20MHz, 14KB Flash, DIP-40

Manufacturer: Microchip Package: DIP-40

Description

The PIC16F877A is a classic mid-range 8-bit microcontroller from Microchip. It features 14KB Flash, 368B SRAM, 256B EEPROM, and a rich set of peripherals including ADC, USART, I2C, and SPI.

Pin Configuration

Package: DIP-40

Pin 1: MCLR/VPP — Master clear / Programming voltage
Pin 2: RA0/AN0 — GPIO / ADC channel 0
Pin 3: RA1/AN1 — GPIO / ADC channel 1
Pin 4: RA2/AN2/VREF- — GPIO / ADC channel 2 / Neg reference
Pin 5: RA3/AN3/VREF+ — GPIO / ADC channel 3 / Pos reference
Pin 6: RA4/T0CKI — GPIO / Timer0 external clock
Pin 7: RA5/AN4/SS — GPIO / ADC channel 4 / SPI slave select
Pin 8: RE0/AN5/RD — GPIO / ADC channel 5 / PSP read
Pin 9: RE1/AN6/WR — GPIO / ADC channel 6 / PSP write
Pin 10: RE2/AN7/CS — GPIO / ADC channel 7 / PSP chip select
Pin 11: VDD — Positive supply
Pin 12: VSS — Ground
Pin 13: OSC1/CLKIN — Oscillator input
Pin 14: OSC2/CLKOUT — Oscillator output
Pin 15: RC0/T1OSO/T1CKI — GPIO / Timer1 osc out / Timer1 ext clock
Pin 16: RC1/T1OSI/CCP2 — GPIO / Timer1 osc in / Capture/Compare 2
Pin 17: RC2/CCP1 — GPIO / Capture/Compare/PWM 1
Pin 18: RC3/SCK/SCL — GPIO / SPI clock / I2C clock
Pin 19: RD0/PSP0 — GPIO / Parallel slave port bit 0
Pin 20: RD1/PSP1 — GPIO / Parallel slave port bit 1
Pin 21: RD2/PSP2 — GPIO / Parallel slave port bit 2
Pin 22: RD3/PSP3 — GPIO / Parallel slave port bit 3
Pin 23: RC4/SDI/SDA — GPIO / SPI data in / I2C data
Pin 24: RC5/SDO — GPIO / SPI data out
Pin 25: RC6/TX/CK — GPIO / USART transmit / Sync clock
Pin 26: RC7/RX/DT — GPIO / USART receive / Sync data
Pin 27: RD4/PSP4 — GPIO / Parallel slave port bit 4
Pin 28: RD5/PSP5 — GPIO / Parallel slave port bit 5
Pin 29: RD6/PSP6 — GPIO / Parallel slave port bit 6
Pin 30: RD7/PSP7 — GPIO / Parallel slave port bit 7
Pin 31: VSS — Ground
Pin 32: VDD — Positive supply
Pin 33: RB0/INT — GPIO / External interrupt
Pin 34: RB1 — GPIO
Pin 35: RB2 — GPIO
Pin 36: RB3/PGM — GPIO / Low-voltage programming
Pin 37: RB4 — GPIO / Interrupt-on-change
Pin 38: RB5 — GPIO / Interrupt-on-change
Pin 39: RB6/PGC — GPIO / ICSP clock
Pin 40: RB7/PGD — GPIO / ICSP data

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0 revisions · Updated 2026-03-02 17:31:36