Microchip PIC17C44-25/L: A High-Performance 8-Bit CMOS Microcontroller
In the realm of embedded control, the demand for robust, efficient, and high-performance microcontrollers remains constant. The Microchip PIC17C44-25/L stands as a significant embodiment of these qualities, representing a powerful member of Microchip's extensive PIC17Cxx family. This 8-bit CMOS microcontroller is engineered for applications requiring substantial processing power, versatile I/O capabilities, and reliable operation in demanding environments.
Architecturally, the PIC17C44-25/L is built around an advanced RISC (Reduced Instruction Set Computer) CPU. This core features a 16-bit wide instruction set, enabling most instructions to execute in a single clock cycle. With an operating frequency of 25 MHz (as denoted by the '-25' suffix), the device achieves a impressive instruction throughput, making it well-suited for complex control algorithms and time-sensitive operations. Its CMOS technology ensures low power consumption, a critical factor for power-sensitive designs, while maintaining high noise immunity.
A key strength of this microcontroller lies in its integrated memory configuration. It boasts a substantial 16K x 16 EPROM program memory, providing ample space for sophisticated application code. This is complemented by 454 bytes of RAM for data handling and a 256-byte EEPROM data memory, which allows for the non-volatile storage of critical parameters without the need for an external chip. This combination offers designers significant flexibility.

The peripheral set of the PIC17C44-25/L is comprehensive and designed for connectivity and control. It includes a high-performance 13-bit PWM (Pulse Width Modulation) module, ideal for precise motor control and power conversion applications. Multiple communication interfaces are onboard, such as a USART (Universal Synchronous Asynchronous Receiver Transmitter) for serial communication (RS-232, RS-485) and a Serial Peripheral Interface (SPI) for talking to peripheral chips like sensors and memory. Furthermore, it incorporates an 8-bit multi-input capture/output compare/PWM (MCCP) module and a 16-bit input capture/output compare/PWM (CCP) module, enhancing its timing and control capabilities.
The device is housed in a 44-pin PLCC (Plastic Leaded Chip Carrier) package, offering a compact footprint while providing access to its 33 I/O pins. These pins are organized into multiple ports, many of which are multiplexed with alternate functions for the on-chip peripherals, maximizing the utility of each pin.
Target applications for the PIC17C44-25/L are diverse and include industrial automation, motor control systems, automotive electronics, advanced consumer appliances, and communications equipment. Its blend of high-speed computation, rich peripherals, and reliable CMOS technology made it a formidable choice for engineers developing next-generation embedded systems.
ICGOODFIND: The Microchip PIC17C44-25/L is a high-performance, feature-rich 8-bit microcontroller that excels in processing speed and integrated functionality. Its 25 MHz RISC core, abundant on-chip memory, and versatile peripheral set make it a powerful and self-contained solution for complex embedded control tasks across various industries.
Keywords: High-Performance, 8-Bit CMOS, 25 MHz, RISC Architecture, Integrated Peripherals
