Microchip Technology

PIC16F876A-I/SS - 8-Bit 20MHz 14KB MCU 28-SSOP | Microchip

MPN: PIC16F876A-I/SS ✓ Hoạt động

2.0 V to 5.5 V Vdss 28-pin SSOP (5.30 mm body) Package 20 MHz (200 ns instruction cycle) Speed 14 KB (8K x 14 words) Memory

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PIC16F876A-I/SS Tóm tắt

The Microchip Technology PIC16F876A-I/SS is an 8-bit CMOS flash-based PIC16 mid-range microcontroller with 20 MHz maximum CPU clock (200 ns instruction cycle), 14 KB (8K x 14) of program Flash memory, 368 bytes of SRAM, and 256 bytes of EEPROM, packaged in a 28-pin SSOP (5.30 mm body). The -I temperature grade specifies an industrial -40C to +85C operating range and is suitable for consumer, industrial, and embedded control applications.

A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash), data memory (RAM), and a rich set of peripherals (timers, ADC, communication ports, GPIO). Within the broader taxonomy, the PIC16F876A belongs to PIC16 family -> PIC16F mid-range 8-bit MCU -> flash MCU -> microcontroller -> semiconductor IC. Mid-range PIC16 MCUs are widely recognized for their 35-instruction RISC architecture, deterministic instruction execution, and ease of programming in both C and assembly.

Key features include 22 digital I/O pins, five 10-bit ADC channels, two analog comparators, two capture/compare/PWM modules, a USART port, and a synchronous serial port configurable as either 3-wire SPI or 2-wire I2C. On-chip in-circuit debug (ICD) and self-programming capability allow field upgrades without external programmers. The Harvard memory architecture separates program and data buses, enabling simultaneous fetch and execute for deterministic real-time control.

Typical applications include industrial sensor interfacing, low-cost motor control, automotive AC diagnostics, hobby robotics, and battery-powered Smart Sensing applications. The 5-channel 10-bit ADC allows direct connection to temperature sensors.

When designing with the PIC16F876A-I/SS, pay attention to supply decoupling and in-circuit serial programming (ICSP) pin allocation to avoid conflicting with target application I/O. The device operates from 2.0 V to 5.5 V.

This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on individual distributor product pages.

Bộ thay thế dễ dàng lắp đặt cho PIC16F876A-I/SS — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.

Các biến thể trong loạt này

Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F876A-I/SS (cùng hình factor và footprint) — khác nhau ở Package, Timers, Core Architecture, ADC, Operating Temperature.

MC908QC8CDTE

NXP Semiconductors

Package: 16-pin TSSOP

Timers: 6-channel (TIM)

ADC: 10-bit, 10 channels

PIC14000T-04/SS

Microchip Technology

Operating Temperature: 0 C to +70 C (Commercial)

PIC14000T-04I/SS

Microchip Technology

Package: 28-SSOP (0.209 inch / 5.30 mm body)

Core Architecture: PIC 8-bit RISC

Operating Temperature: -40C to +85C (Industrial)

PIC16C63AT-20/SS

Microchip Technology

Package: 28-pin SSOP

Timers: 2 × 8-bit + 1 × 16-bit

Core Architecture: 8-bit RISC (PIC16 mid-range)

PIC16C771-I/SS

Microchip Technology

Package: 20-pin SSOP

Timers: 2 x 8-bit + 1 x 16-bit

Core Architecture: PIC 8-bit RISC Harvard

PIC16C773-E/SS

Microchip Technology

Package: 28-pin SSOP (208 mil, 5.30 mm body width)

Timers: 2 x 8-bit, 1 x 16-bit

Core Architecture: 8-bit PIC RISC (Harvard)

PIC16C773/SS

Microchip Technology

Package: 28-pin SSOP (0.209 inch / 5.30 mm body)

Timers: TMR0 (8-bit), TMR1 (16-bit), TMR2 (8-bit with period register)

Core Architecture: 8-bit PIC RISC

PIC16C773T-E/SS

Microchip Technology

Package: 28-SSOP (0.209", 5.30 mm width)

ADC: 12-bit, 6 channels

PIC16F767-I/SS

Microchip Technology

Package: 28-SSOP (5.30 mm body)

Timers: 3

ADC: 11 channels, 10-bit

PIC16F819-I/SS

Microchip Technology

Package: 20-pin SSOP (5.30 mm / 0.209")

Timers: Timer0, Timer1, Timer2 (3 / 1 16-bit)

Core Architecture: PIC16 8-bit RISC (Harvard)

PIC16F870-E/SS

Microchip Technology

Package: 28-pin SSOP

Timers: 3 (Timer0, Timer1, Timer2)

Core Architecture: PIC16 (8-bit RISC, Harvard)

PIC16F870-I/SS

Microchip Technology

Package: 28-pin SSOP (5.30 mm body, 0.65 mm pitch)

Timers: 2 x 8-bit, 1 x 16-bit

ADC: 10-bit, 5 channels

PIC16F876A-E/SS

✅ Drop-In

Microchip Technology

📦 SSOP-28

PIC16 8-bit RISC (Harvard) · 14 KB (8192 x 14 words) · 368 bytes · 256 bytes · 20 MHz · 200 ns · 2.0 V to 5.5 V · 35 (single-word)

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PIC16F876A-I/SS Tỷ lệ tối đa & tính chất điện

Core Architecture	PIC16 mid-range 8-bit RISC
Maximum CPU Frequency	20 MHz (200 ns instruction cycle)
Program Memory (Flash)	14 KB (8K x 14 words)
Data SRAM	368 bytes
Data EEPROM	256 bytes
Instruction Set	35 single-word instructions
Operating Voltage Range	2.0 V to 5.5 V
Digital I/O Pins	22
ADC	5 channels x 10-bit
Analog Comparators	2
CCP/PWM Modules	2
Serial Interfaces	USART + MSSP (SPI / I2C)
Timers	3 (TMR0, TMR1, TMR2)
Self-Programming / ICD	Yes (In-Circuit Debug + self-programming)
Nhiệt độ hoạt động	-40C to +85C (industrial, -I grade)
Hộp	28-pin SSOP (5.30 mm body)
Kiểu lắp đặt	Surface Mount
Trạng thái RoHS	Compliant

Cấu hình chân PIC16F876A-I/SS

Chân 1	MCLR/Vpp — Master Clear (reset) input / programming voltage
Chân 2	RA0/AN0 — Digital I/O / analog input channel 0
Chân 3	RA1/AN1 — Digital I/O / analog input channel 1
Chân 4	RA2/AN2/CVREF — Digital I/O / analog input 2 / comparator reference
Chân 5	RA3/AN3/VREF+ — Digital I/O / analog input 3 / ADC positive reference
Chân 6	RA4/T0CKI — Digital I/O / Timer0 clock input
Chân 7	RA5/AN4/SS — Digital I/O / analog input 4 / SPI slave select
Chân 8	OSC1/CLKIN — Crystal oscillator pin 1 / external clock input
Chân 9	OSC2/CLKOUT — Crystal oscillator pin 2 / clock output
Chân 10	RC0/T1OSO — Digital I/O / Timer1 oscillator output
Chân 11	RC1/T1OSI — Digital I/O / Timer1 oscillator input
Chân 12	RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1
Chân 13	RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock
Chân 14	RC4/SDI/SDA — Digital I/O / SPI data in / I2C data
Chân 15	RC5/SDO — Digital I/O / SPI data out
Chân 16	RC6/TX/CK — Digital I/O / USART TX / USART clock
Chân 17	RC7/RX/DT — Digital I/O / USART RX / USART data
Chân 18	GND — Ground reference
Chân 19	RD0 — Digital I/O port D bit 0
Chân 20	RD1 — Digital I/O port D bit 1
Chân 21	RD2 — Digital I/O port D bit 2
Chân 22	RD3 — Digital I/O port D bit 3
Chân 23	RC4/C2OUT — Digital I/O port C bit 4 / comparator 2 output
Chân 24	RC5/C1OUT — Digital I/O port C bit 5 / comparator 1 output
Chân 25	RB0/INT — Digital I/O port B bit 0 / external interrupt
Chân 26	RB1 — Digital I/O port B bit 1
Chân 27	RB2 — Digital I/O port B bit 2
Chân 28	VDD — Positive supply (2.0 V to 5.5 V)

Ứng dụng tiêu biểu

PIC16F876A-I/SS phù hợp cho 6 Áp dụngs: Industrial Sensor Interface, Low-Cost Motor Control (BLDC, Stepper), Hobby Robotics and Educational Kits, Battery-Powered Smart Sensor Nodes, Automotive Body Electronics (Non-Safety), White Goods and Appliance Control.

🏭

Industrial Sensor Interface

The PIC16F876A-I/SS is well suited to industrial sensor interface boards reading 4-20 mA loops, thermistors, and 0-10 V signals via its 10-bit ADC. The 22 digital I/O pins directly drive indicator LEDs, relay coils, and optocouplers without external buffers, while the 2.0 V to 5.5 V supply accommodates both 3.3 V sensor rails and legacy 5 V control logic. Five ADC channels multiplex multiple analog inputs on a single MCU.

Được đề xuất

🏭

Low-Cost Motor Control (BLDC, Stepper)

With two CCP/PWM modules and 22 GPIO pins, the PIC16F876A-I/SS can drive a single low-power brushed DC motor, a small stepper, or sensorless BLDC motor with back-EMF sensing on a single chip. The 20 MHz clock provides a 50 ns PWM resolution at 50 kHz switching frequency for smooth torque control. Two analog comparators enable hardware overcurrent protection without software latency.

Được đề xuất

MCP607T-I/ST · Microchip Technology NUD3124DMT1G · onsemi

🧩

Hobby Robotics and Educational Kits

The PIC16F876A-I/SS is a workhorse in hobby robotics: 22 I/O drives servos and sensors, the USART connects to Bluetooth/WiFi modules for remote control, and the ICD port allows in-circuit debug with a PICkit 3 programmer. The 35-instruction RISC architecture is easy to teach in C or assembly, making it popular in undergraduate embedded systems courses and maker projects.

Được đề xuất

MICROCHIP-PICkit3 (In-circuit debugger and programmer) MCP23017-E/ML · Microchip Technology

🧩

Battery-Powered Smart Sensor Nodes

The PIC16F876A-I/SS supports low-power sleep with peripherals running, allowing multi-year battery life in remote sensor nodes transmitting over SPI or I2C. The 256-byte EEPROM stores calibration constants and node IDs non-volatilely, while the self-programming feature enables Over-The-Air firmware updates via a companion radio module. Industrial temperature rating suits outdoor and industrial deployments.

Được đề xuất

MCP9808T-E/MS (High-accuracy I2C temperature sensor) NRF51822-QFAC-R7 · Nordic Semiconductor

🚗

Automotive Body Electronics (Non-Safety)

Although not AEC-Q100 qualified, the PIC16F876A-I/SS is widely used in non-safety automotive body applications such as interior lighting controllers, HVAC auxiliaries, and seat controllers where automotive-grade qualification is not mandated. The wide 2.0 V to 5.5 V supply tolerates load-dump and cranking transients when paired with proper TVS protection. The 256-byte EEPROM retains user settings across battery disconnects.

Được đề xuất

NCV1362ABDR2G · onsemi MCP23S17-E/SO · Microchip Technology

⚡

White Goods and Appliance Control

The PIC16F876A-I/SS is used in washing machines, dishwashers, refrigerators, and microwave ovens for user interface, timing, and motor control. The two CCP/PWM modules drive displays and buzzers, the 22 I/O pins interface with keypads and rotary encoders, and the 5-channel ADC reads temperature and humidity sensors. In-circuit debug simplifies field service and firmware updates.

Được đề xuất

MCP4728-E/UN · Microchip Technology MCP6072T-E/SN · Microchip Technology

Tóm tắt các sản phẩm được đề xuất

What is the operating voltage of PIC16F876A-I/SS?

The PIC16F876A-I/SS operates from 2.0 V to 5.5 V across its -40C to +85C industrial temperature range. According to the Microchip PIC16F876A datasheet (DS39582C), the wide supply range allows direct connection to 3.3 V or 5 V rails, and the device retains its Flash program memory across the entire voltage window with brown-out reset protection configurable in firmware.

How much program Flash memory does PIC16F876A-I/SS have?

The PIC16F876A-I/SS contains 14 KB of Flash program memory (8192 x 14-bit words), plus 368 bytes of SRAM and 256 bytes of EEPROM for non-volatile data storage. The self-programming feature enables in-field firmware updates via the ICSP interface without requiring an external programmer, according to the Microchip PIC16F876A datasheet (DS39582C).

Where can I buy PIC16F876A-I/SS online?

The PIC16F876A-I/SS is in stock and ships today from authorized distributors including DigiKey (P/N PIC16F876A-I/SS-ND, part #446141) and Mouser, as of 2026-10-09. Volume pricing is available at qty 100, 500 and 1000+ breaks. Authorized stocking distributors ensure genuine parts with full manufacturer warranty and traceability.

What is the lead time for PIC16F876A-I/SS?

Lead time for the PIC16F876A-I/SS from authorized distributors DigiKey and Mouser is generally 2-4 weeks for production quantities as of 2026-10-09, since the part is in active production and broadly stocked. For large orders above 5,000 units, request a quote directly from Microchip factory or authorized distributors for the most accurate schedule.

What is the price of PIC16F876A-I/SS?

The PIC16F876A-I/SS unit price is approximately $5.40 at qty 1, dropping to $4.32 at qty 100 and $3.46 at qty 1000, as of 2026-10-09 from DigiKey and Mouser. Pricing is subject to change; consult the live distributor listings for the most current quote and any applicable tariff adjustments.

What is the difference between PIC16F876A-I/SS and PIC16F876A-E/SS?

Both parts share the same SSOP-28 footprint and identical electrical core; the difference is the operating temperature grade. The -I suffix (this part) specifies -40C to +85C industrial temperature range, while the -E suffix specifies -40C to +125C extended range. Both are drop-in compatible at the pin level, so substituting one for the other depends only on your thermal requirement.

PIC16F876A-I/SS vs PIC16F886-I/SS - which is better for new designs?

For new designs, Microchip officially recommends the PIC16F886-I/SS as the modern replacement for the PIC16F876A-I/SS. The PIC16F886 doubles program Flash to 14 KB and SRAM to 368 bytes (same), increases EEPROM to 256 bytes, and adds enhanced peripherals while remaining pin-compatible in the 28-pin SSOP package. Choose PIC16F886 for new designs unless you must match legacy firmware or sourcing constraints.

When should I choose PIC16F876A-I/SS over PIC16F1824-I/ST?

Choose the PIC16F876A-I/SS when you need the legacy PIC16F mid-range core for firmware compatibility, an established PIC16 instruction set, and broad availability in the 28-SSOP footprint. Choose the PIC16F1824-I/ST only when you specifically need its enhanced 8-bit core with XLP (extreme low power) - it uses a different package (TSSOP-14) and is NOT pin-compatible with the PIC16F876A.

What is the best drop-in replacement for PIC16F876A-I/SS?

The best drop-in replacement for PIC16F876A-I/SS is the PIC16F876A-E/SS (extended -40C to +125C temperature grade, same SSOP-28 footprint and identical electrical core). For new designs, the Microchip-recommended replacement is PIC16F886-I/SS, which adds more Flash, EEPROM, and enhanced peripherals while preserving the SSOP-28 pinout.

Where to download PIC16F876A-I/SS datasheet PDF?

The official PIC16F876A-I/SS datasheet (DS39582C, 234 pages) can be downloaded from Microchip's website at https://ww1.microchip.com/downloads/en/DeviceDoc/39582C.pdf or viewed at microchip.com/en-us/product/PIC16F876A. The datasheet includes electrical characteristics, instruction set reference, peripheral configuration, programming specification, and typical application circuits.

Where to find PIC16F876A-I/SS pinout?

The PIC16F876A-I/SS pinout is documented on page 1 of the official PIC16F876A datasheet (DS39582C). The 28-pin SSOP package has pin 1 at the top-left (dot or beveled edge), with numbering proceeding counter-clockwise around the package. Pin 28 is the VDD supply and pin 1 is MCLR/Vpp for the SSOP variant.

What are the key specifications of PIC16F876A-I/SS that engineers should know?

Key specifications of the PIC16F876A-I/SS: 8-bit PIC16 mid-range core running at 20 MHz (200 ns instruction cycle), 14 KB Flash program memory, 368 bytes SRAM, 256 bytes EEPROM, 22 digital I/O pins, 5-channel 10-bit ADC, 2 analog comparators, 2 CCP modules, USART plus MSSP (SPI/I2C), 2.0 V to 5.5 V supply, -40C to +85C industrial temperature range, in-circuit debug, and self-programming, all housed in a 28-pin SSOP package.

Can PIC16F876-20/SP replace PIC16F876A-I/SS?

No, the PIC16F876-20/SP is NOT a drop-in replacement for the PIC16F876A-I/SS. The two parts differ in memory architecture (older PIC16F876 vs enhanced PIC16F876A), package (SPDIP-28 vs SSOP-28), and pinout - they are not pin-compatible. Use the PIC16F876A-E/SS (same package, same die, different temp range) or PIC16F886-I/SS (enhanced successor) as drop-in alternatives.

What is the best Atmel/Microchip equivalent for PIC16F876A-I/SS?

Atmel does not make a direct drop-in equivalent for the PIC16F876A-I/SS because the PIC16 mid-range instruction set is Microchip-proprietary. For new designs requiring cross-vendor flexibility, consider Microchip's own PIC16F886-I/SS (pin-compatible enhanced successor) or migrate to a PIC18F or ARM Cortex-M0+ MCU in the same SSOP-28 footprint if you need a wider instruction set and toolchain portability.

Dữ liệu tham khảo kỹ thuật cho PIC16F876A-I/SS — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.

Hướng dẫn chọn lựa

Choose the PIC16F876A-I/SS when you need the established Microchip PIC16 mid-range 8-bit core in the SSOP-28 footprint for industrial (-40C to +85C) applications and want the smallest possible PCB outline. For higher temperature designs up to +125C, choose the PIC16F876A-E/SS (drop-in, same footprint). For prototypes or hand-soldered builds where SSOP is hard to work with, choose PIC16F876A-I/SO in SOIC-28 - same die but requires PCB rework because the SOIC-28 footprint is different. For new designs, consider Microchip's modern PIC16F886-I/SS successor which adds more Flash and EEPROM while preserving SSOP-28 pinout.

So sánh với các sản phẩm thay thế

Tham số	Sản phẩm này	PIC16F876A-E/SS	PIC16F876A-I/SO
Brand	Microchip Technology	Microchip Technology	Microchip Technology
Package	SSOP-28 (5.30 mm)	SSOP-28 (5.30 mm) - same footprint	SOIC-28 (7.50 mm) - DIFFERENT footprint
Pin Count	28	28 - same	28 - same
Core / Architecture	PIC16 mid-range 8-bit	PIC16 mid-range 8-bit - identical	PIC16 mid-range 8-bit - identical
Maximum CPU Frequency	20 MHz	20 MHz	20 MHz
Flash Program Memory	14 KB	14 KB	14 KB
SRAM	368 bytes	368 bytes	368 bytes
EEPROM	256 bytes	256 bytes	256 bytes
Operating Temperature	-40C to +85C (industrial)	-40C to +125C (extended)	-40C to +85C (industrial)

Bảo phân biệt quan trọng

Wider operating temperature range than -I grade (vsPIC16F876A-I/SO)
Smaller PCB footprint in same pinout (vsPIC16F876A-I/SO)

Ghi chú thiết kế

Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 28) of the PIC16F876A-I/SS, with a 10 uF bulk capacitor on the main supply rail. For ICSP programming, ensure MCLR/Vpp (pin 1) has its own 10 kohm pull-up to VDD and a 100 nF cap to ground to suppress programming noise. Operating voltage range is 2.0 V to 5.5 V; do not exceed 5.5 V absolute maximum.

Keep the crystal or external clock traces (OSC1/OSC2, pins 8-9) short and surrounded by a ground pour to minimize EMI and clock jitter. If using the internal RC oscillator instead, leave OSC1/OSC2 as GPIO (RA6/RA7 do not exist on 28-pin variants - use RA4/OSC2 only on 40-pin packages). Route sensitive analog signals (AN0-AN4) away from digital switching traces.

Do not confuse the PIC16F876A (this enhanced part) with the legacy PIC16F876 - the older part has different memory architecture and fewer peripherals. Also note that the 28-pin SSOP pinout differs from 40-pin DIP variants; pin numbers 23-27 are remapped to port C functions (C2OUT, C1OUT, RB0-RB2) on the SSOP, not to port D bits. Always consult the datasheet pinout for your specific package.

Thông tin tuân thủ

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Qualified

Không chì

Yes

Không halogen

Unknown

Khoáng vật xung đột

Compliant

RoHS compliant per Microchip product page. Not AEC-Q100 qualified - do not use for safety-critical automotive applications without further qualification.

Dữ liệu được xác minh vào: 2026-10-09 — dữ liệu được xác minh và quản lý bởi đội ngũ kỹ thuật phần cứng của XAIPART

Nguồn: Distributor, Distributor, Manufacturer Product Page, Manufacturer Datasheet, Manufacturer Datasheet, Distributor, Manufacturer Datasheet

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