Microchip PIC16F874A-I/P 8-Bit Microcontroller Data Sheet and Technical Specifications

The PIC16F874A-I/P is a high-performance 8-bit microcontroller from Microchip Technology, built on an enhanced RISC architecture that delivers a powerful and efficient computing solution for embedded control applications. This device combines a rich set of peripheral features with the reliability and ease of use characteristic of the PIC® microcontroller family, making it a versatile choice for applications in industrial, automotive, consumer, and other sectors.

Housed in a 40-pin PDIP package, the PIC16F874A-I/P operates over a wide voltage range (2.0V to 5.5V), supporting flexible design options. At its core is an 8-bit CMOS FLASH-based CPU, capable of executing a comprehensive set of 35 single-word instructions. All instructions are single-cycle except for program branches, which require two cycles, enabling efficient and predictable timing for critical control loops.

A key feature of this microcontroller is its 14.3 KB of Flash Program Memory and 368 bytes of RAM, providing ample space for complex firmware. Additionally, it includes 256 bytes of EEPROM data memory for storing non-volatile parameters, such as calibration data or user settings, which can be rewritten up to 1,000,000 times.

The PIC16F874A-I/P is equipped with a rich set of integrated peripherals:

Analog-to-Digital Converter (ADC): A 10-bit resolution ADC with up to 8 input channels allows for precise measurement of analog signals.

Timers: The device includes three timers/counters (Timer0, Timer1, and Timer2), providing the necessary resources for event counting, timing generation, and capture/compare operations.

Communication Interfaces: It supports multiple serial communication protocols, including a USART (Universal Synchronous Asynchronous Receiver Transmitter) for RS-232/485 communication, an SPI (Serial Peripheral Interface) and an I2C (Inter-Integrated Circuit) bus for interfacing with serial EEPROMs, sensors, and other peripheral chips.

Capture/Compare/PWM (CCP) Modules: Two CCP modules offer flexibility for measuring pulse widths, comparing waveforms, and generating Pulse-Width Modulation (PWM) signals, essential for controlling motors and power converters.

The microcontroller also features a Brown-out Reset (BOR) and a Watchdog Timer (WDT) with its own on-chip RC oscillator, enhancing system reliability by ensuring safe operation during power fluctuations and recovering from software malfunctions.

ICGOODFIND Summary:

The Microchip PIC16F874A-I/P is a robust and feature-rich 8-bit microcontroller, ideal for designers seeking a balance of processing power, extensive I/O capabilities, and reliable non-volatile memory. Its comprehensive peripheral set, including ADC, communication interfaces, and PWM modules, makes it a strong contender for a wide array of embedded control and monitoring tasks.

Keywords:

1. PIC16F874A-I/P

2. 8-Bit Microcontroller

3. RISC Architecture

4. Flash Program Memory

5. Analog-to-Digital Converter (ADC)