PIC16C55A-20E/P

Microcontrollers Overview

The PIC16C55A-20E/P is an 8-bit CMOS microcontroller from the PIC16C family, manufactured by Microchip Technology. It features a 20 MHz operating speed and utilizes external oscillator types. The device includes 768 bytes of EPROM program memory (organized as 512 x 12 bits) and 25 bytes of RAM (25 x 8 bits). It operates within a supply voltage range of 3V to 5.5V and supports an industrial temperature range of -40°C to 85°C. The component is housed in a 28-pin Ceramic Dual In-Line Package (CerDIP) with a window for UV erasure.

Microcontrollers Feature Summary

• Supports external clocking configurations for system timing control
• Includes Power-On Reset (POR) and Watchdog Timer (WDT) peripherals for system stability
• Features 20 general-purpose I/O pins for peripheral interfacing

Microcontrollers Applications

• Embedded systems requiring EPROM-based firmware development
• Industrial control applications within specified temperature ranges
• Prototyping environments utilizing MPLAB ICE 2000 emulation hardware

Microcontrollers Procurement Notes

Verify the specific suffix 'P' corresponds to the 28-pin Ceramic DIP package with UV window. Confirm the '-20E' designation aligns with the required 20 MHz speed grade and industrial temperature rating (-40°C to 85°C). Ensure compatibility with existing UV erasing equipment if field reprogramming is necessary. Cross-reference the manufacturer's current product status, as this part may be discontinued or subject to migration notices.

Microcontrollers Selection Notes

Select this component when EPROM technology is preferred for its ability to be erased and reprogrammed multiple times during development. It is suitable for designs requiring the robustness of ceramic packaging and the specific pin count of the 28-pin DIP form factor. Consider the external oscillator requirement and ensure the target application can provide the necessary clock circuitry. Verify that the 3V to 5.5V supply range matches the system power architecture.

Microcontrollers Part Context

This microcontroller belongs to the PIC16C55 family, which shares architectural similarities with other devices in the PIC16C series. It serves as a foundational 8-bit MCU solution for embedded applications before the widespread adoption of Flash memory variants. The device is often associated with legacy development tools like the MPLAB ICE 2000 emulator system, which requires specific processor modules for emulation support.

Microcontrollers Replacement Considerations

Public confirmed substitute part numbers: PIC16C55-HSI/P, PIC16C55A/JW.