Microchip PIC16C67-04/P: An 8-Bit CMOS Microcontroller with Integrated EEPROM Data Memory

The Microchip PIC16C67-04/P stands as a significant component in the lineage of 8-bit microcontrollers, renowned for its robust integration of features tailored for embedded control applications. This microcontroller combines the efficiency of CMOS technology with the invaluable addition of on-chip EEPROM data memory, making it a versatile solution for a wide array of industrial, automotive, and consumer electronics.

Housed in a plastic DIP (PDIP) package, the PIC16C67-04/P is built on Microchip's foundational RISC architecture. This design philosophy ensures that most instructions execute in a single cycle, achieving a throughput of up to 1 MIPS per MHz. Operating at a clock frequency of 4 MHz (as denoted by the -04 speed grade), it provides a solid balance of processing power and low energy consumption, a hallmark of CMOS technology.

A defining feature of this microcontroller is its integrated EEPROM data memory. Unlike standard ROM or one-time programmable (OTP) devices, the EEPROM allows for electrical erasure and reprogramming of data non-volatilely. This capability is crucial for applications requiring frequent updates of calibration data, user settings, or event logging without the need for external memory chips, thereby reducing system complexity and cost.

The core functionality is supported by a comprehensive set of peripherals. It includes multiple I/O ports, a timer/counter module, and a powerful interrupt structure. Furthermore, it features an analog-to-digital converter (ADC), enabling it to interface directly with analog sensors and signals from the physical world, a critical function for real-time control systems.

In application, the PIC16C67-04/P excels in scenarios demanding reliability and the ability to modify parameters in the field. Its non-volatile EEPROM memory ensures that critical data is retained even when power is removed, providing resilience and flexibility for end-products.

ICGOODFIND: The Microchip PIC16C67-04/P is a quintessential 8-bit microcontroller that successfully merges computational efficiency with the critical feature of in-system data modifiability. Its integrated EEPROM, analog capabilities, and RISC performance make it a historically important and enduringly relevant solution for embedded designers seeking a reliable and cost-effective control unit.

Keywords: EEPROM Memory, CMOS Technology, RISC Architecture, Embedded Control, Analog-to-Digital Converter (ADC)