PIC16F876-04E/SP
PIC16F876-04E/SP - 8-bit 4MHz MCU 14KB Flash 28-SPDIP | Microchip
The Microchip Technology PIC16F876-04E/SP is an 8-bit CMOS Flash-based microcontroller from the PIC® 16F family, delivering 4 MIPS performance from a 4 MHz oscillator in a 28-pin SPDIP (0.300 inch / 7.62 mm) through-hole package. It integrates 14 KB of Flash program memory (8K x 14 words), 368 bytes of RAM, and 256 bytes of EEPROM data memory, providing a compact platform for embedded control applications that require non-volatile data storage and field-reprogrammable code.
What is a Microcontroller (MCU)? A microcontroller is a single-chip computer that integrates a CPU core, program memory, data RAM, peripherals (timers, ADC, communication ports, GPIO), and in modern designs non-volatile memory such as Flash and EEPROM. Within the broader taxonomy, the PIC16F876 belongs to the 8-bit microcontroller category, which sits inside the larger family of microcontrollers (MCU), which are themselves a sub-category of microprocessors and ultimately semiconductors. The "Flash" designation indicates the program memory is electrically erasable and reprogrammable in-circuit, enabling field firmware updates.
Key features include 22 digital I/O pins, a 10-bit multi-channel Analog-to-Digital Converter (ADC), two 8-bit timers plus one 16-bit timer, a Capture/Compare/PWM (CCP) module, an Enhanced USART for serial communication, and a Master Synchronous Serial Port (MSSP) supporting both SPI and I2C. The "-04E" suffix denotes the 4 MHz maximum oscillator rating with the "E" (Enhanced) temperature range variant, providing -40°C to +125°C operation, and "/SP" identifies the 28-pin Skinny Plastic DIP package.
The PIC16F876 uses Microchip's RISC-based Harvard architecture with only 35 single-word instructions, enabling 200 ns instruction execution at 4 MHz. This architecture separates program and data memory buses for parallel fetch, and the part is source-code compatible with PIC12Cxxx, PIC16C5x, PIC16C7x, and PIC14000 devices, simplifying migration across product lines.
Typical applications include industrial control and sensor interfaces, automotive body electronics, low-end consumer appliances, HVAC thermostat controls, remote sensor nodes, and educational/hobbyist platforms. The 14 KB Flash and 256-byte EEPROM make it well suited to applications that store calibration constants or runtime configuration in non-volatile memory alongside user firmware.
Design consideration: at 4 MHz the MCU executes most instructions in a single 200 ns cycle, but interrupt latency, ADC acquisition time, and communication peripheral setup must be factored into the worst-case timing budget. The 28-pin SPDIP is the most common form factor for the PIC16F87x family, allowing hand-soldering and breadboard prototyping.
This page synthesizes distributor availability, parametric drop-in alternatives, and design notes not found on stock product pages, providing engineering reference value beyond what a single manufacturer datasheet page offers.
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