Microchip PIC16F628-04I/SO: An 8-Bit Powerhouse with 5KB Flash Memory

The Microchip PIC16F628-04I/SO stands as a testament to the enduring relevance and capability of well-designed 8-bit microcontrollers. This robust component, packaged in a compact 18-pin SOIC (SO) case, is engineered for industrial temperature ranges (-40°C to +85°C), making it suitable for a vast array of demanding applications. At its core, it combines sufficient memory with versatile peripherals, offering an exceptional balance of performance, power efficiency, and cost-effectiveness.

A central feature of this MCU is its 5KB of Flash program memory. This provides ample space for complex firmware, allowing developers to implement sophisticated control algorithms, data processing routines, and user interface logic without the immediate need to upgrade to a larger, more expensive chip. The Flash technology ensures that code can be reprogrammed up to 100,000 times, facilitating rapid prototyping, field updates, and design revisions throughout the product development lifecycle.

Beyond its memory, the PIC16F628-04I/SO is packed with integrated features that minimize external component count and reduce overall system cost. It includes 224 bytes of RAM for data handling and 128 bytes of EEPROM for storing critical parameters that must be retained even after a power loss. Its peripheral set is impressive for an 18-pin device, featuring:

Two versatile timers (Timer0 and Timer1) and one 8-bit timer with an 8-bit prescaler (Timer2).

Two powerful comparators for analog signal monitoring, which can be configured in multiple modes.

A USART (Universal Synchronous Asynchronous Receiver Transmitter) module, enabling serial communication protocols like RS-232, RS-485, and LIN bus for system connectivity.

A built-in watchdog timer and a fail-safe clock monitor for enhanced reliability.

Operating at up to 4MHz (as denoted by the -04 speed grade) with a wide voltage range of 2.0V to 5.5V, this microcontroller is ideal for battery-powered and low-power applications. Its nanoWatt technology enables it to enter various sleep modes, drawing minimal current and extending operational life in portable devices.

ICGOODFIND: The Microchip PIC16F628-04I/SO remains a highly capable and reliable choice for designers. Its optimal blend of 5KB Flash memory, essential communication peripherals like USART, analog comparators, and industrial-grade robustness ensures it continues to be a perfect solution for applications in industrial control, consumer electronics, sensor interfaces, and motor control systems.

Keywords:

8-Bit Microcontroller

Flash Memory

USART Communication

Low-Power Operation

Industrial Temperature Range