Microchip PIC16C65B-04/P: An 8-Bit CMOS Microcontroller with Integrated EEPROM

The Microchip PIC16C65B-04/P stands as a significant component in the lineage of 8-bit microcontrollers, renowned for its robust integration and reliability in embedded control applications. This microcontroller combines a powerful CPU core with the invaluable addition of on-chip EEPROM data memory, making it a versatile choice for a wide array of industrial, automotive, and consumer products.

Housed in a plastic DIP (PDIP) package, the PIC16C65B-04/P is built on Microchip’s proven low-power, high-performance CMOS technology. Its operational frequency of 4 MHz, denoted by the "-04" suffix, provides a solid balance between processing speed and power consumption. The heart of the device is an 8-bit RISC-based CPU that features a reduced instruction set (only 35 single-word instructions), enabling developers to write highly efficient and compact code. This architecture allows for a two-level deep hardware stack and direct, indirect, and relative addressing modes, offering significant flexibility for complex programming tasks.

A key differentiator for this microcontroller is its 256 bytes of EEPROM data memory. This non-volatile memory can be electrically erased and rewritten, allowing parameters, calibration data, or user settings to be stored directly on the chip without requiring an external serial EEPROM. This integration simplifies board design, reduces component count, and enhances overall system security and reliability.

The peripheral set of the PIC16C65B is thoughtfully designed for embedded control. It includes:

5 channels of 8-bit Analog-to-Digital Conversion (ADC), essential for interfacing with real-world sensors measuring temperature, voltage, or pressure.

Three versatile timers/counters, including an 8-bit timer with an 8-bit prescaler and a 16-bit timer with prescaler.

Two capture/compare/PWM (CCP) modules. These are critical for tasks such as measuring pulse lengths, generating precise time delays, and driving motors or LEDs using pulse-width modulation.

A Universal Synchronous Asynchronous Receiver Transmitter (USART) for serial communication (RS-232, RS-485, etc.), enabling easy connectivity with PCs, peripherals, or other microcontrollers.

An 8-bit parallel slave port for direct interface with a microprocessor bus.

With 4K x 14 words of ROM program memory and 192 bytes of RAM, it offers ample space for sophisticated control algorithms. Its operating voltage range of 2.5V to 6.0V and low power consumption make it suitable for both line-powered and battery-operated devices.

In summary, the PIC16C65B-04/P exemplifies the engineering philosophy of integrating critical features onto a single chip to create a compact, powerful, and self-contained control unit. Its blend of processing power, essential peripherals, and the critical addition of on-chip EEPROM solidifies its legacy as a workhorse in the world of embedded systems.

ICGOODFIND: The PIC16C65B-04/P is a highly integrated 8-bit CMOS microcontroller that excels in embedded control. Its standout feature is the on-chip EEPROM, which simplifies data storage, alongside a rich peripheral set including ADC, CCP modules, and a USART, making it a powerful and self-contained solution for a multitude of applications.

Keywords:

1. EEPROM

2. CMOS

3. 8-bit Microcontroller

4. ADC (Analog-to-Digital Converter)

5. PWM (Pulse-Width Modulation)