Microchip PIC16F628A-I/SO: The Versatile 8-Bit Powerhouse with 5KB Flash Memory

In the expansive world of embedded control, the Microchip PIC16F628A-I/SO stands as a testament to enduring design and remarkable versatility. This 8-bit CMOS microcontroller, housed in a compact 18-pin SOIC package, has been a cornerstone for countless projects, from industrial automation to hobbyist creations, thanks to its balanced blend of performance, features, and accessibility.

At the heart of this MCU lies its 5KB of Flash program memory. This substantial storage capacity allows developers to implement complex firmware and sophisticated control algorithms without the constant worry of space constraints. The Flash technology ensures that the memory can be reprogrammed electrically up to 100,000 times, facilitating an iterative and flexible development process.

The PIC16F628A is built upon a high-performance RISC CPU architecture. All instructions are single-cycle except for program branches, which are two-cycle, enabling a efficient execution of code at clock speeds up to 20 MHz. This results in a powerful computational throughput of 5 MIPS, making it more than capable of handling demanding real-time control tasks.

Beyond its core, the microcontroller is packed with integrated peripherals that minimize external component count and reduce total system cost. Key features include:

Two Analog Comparators for precise voltage level monitoring and sensing.

Two 8-bit timers and one 16-bit timer providing essential timing and pulse generation capabilities.

A USART (Universal Synchronous Asynchronous Receiver Transmitter) module, enabling seamless serial communication (like RS-232, RS-485, or LIN bus) with PCs, sensors, and other peripherals.

128 bytes of EEPROM data memory for storing critical data that must persist even after a power cycle, such as calibration constants or user settings.

A robust set of 16 I/O pins that offer individual direction control and sufficient drive capacity to interface directly with LEDs, relays, and buttons.

The device operates over a broad voltage range (2.0V to 5.5V), supporting both battery-powered and mains-connected applications. Its CMOS technology is synonymous with low power consumption, featuring multiple power-saving sleep modes that are crucial for portable and energy-sensitive designs.

ICGOODFIND: The Microchip PIC16F628A-I/SO remains a highly capable and cost-effective solution for a vast array of embedded systems. Its combination of ample Flash memory, a rich set of integrated peripherals, and proven reliability makes it an excellent choice for developers seeking a powerful yet uncomplicated 8-bit microcontroller.

Keywords: 8-Bit Microcontroller, Flash Memory, CMOS Technology, Embedded Control, PIC16F628A.