PIC16C55-RCI/P Equivalent & Substitute Parts

Part Overview

The PIC16C55-RCI/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 768B of OTP (One-Time Programmable) memory and operating at 4MHz. This device is designed for embedded applications requiring basic microcontroller functionality with external oscillator support. The part is currently active in production with verified programmability through DiGi-Electronics. Finding equivalent or substitute parts may be necessary due to inventory constraints, end-of-life considerations, or application requirements for enhanced memory capacity or programming flexibility.

Substiute Parts

PIC16C55-RCI/P

Microchip TechnologyIn Stock: 910PIC16C55-RCI/P Datasheet

Current PartRFQ

PIC16F57-I/P

Microchip TechnologyIn Stock: 4248PIC16F57-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC16F57-I/P qualifies as a substitute for the PIC16C55-RCI/P based on the following substitution criteria:

Compatible Parameters:

• Identical core processor architecture (PIC)
• Identical core size (8-Bit)
• Identical number of I/O pins (20)
• Identical peripheral set (POR, WDT)
• Identical mounting type (Through Hole)
• Identical package form factor (28-DIP, 0.600", 15.24mm)
• Identical operating temperature range (-40°C ~ 85°C)
• Overlapping voltage supply range (2V ~ 5.5V encompasses the 3V ~ 6.25V requirement within the 3V ~ 5.5V overlap)
• Identical oscillator type (External)
• Equivalent compliance status (ROHS3 Compliant, MSL 1)

Enhanced Specifications: The PIC16F57-I/P provides increased program memory (3KB FLASH vs. 768B OTP) and higher processing speed (20MHz vs. 4MHz), offering greater capability while maintaining full pin and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16C55-RCI/P and PIC16F57-I/P are active products from Microchip Technology with ROHS3 compliance and MSL 1 ratings, ensuring equivalent environmental and regulatory standing. The PIC16F57-I/P is suitable for applications where the PIC16C55-RCI/P is specified, provided that the application can accommodate the enhanced memory and speed capabilities. The FLASH memory type of the PIC16F57-I/P offers reprogrammability advantages over the OTP memory of the PIC16C55-RCI/P. Both devices maintain identical pin configurations and package dimensions, enabling direct socket compatibility in 28-DIP through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F57-I/P be used as a direct replacement for the PIC16C55-RCI/P?

A: Yes. Both devices share identical pin counts (20 I/O), package form factor (28-DIP), peripheral configuration (POR, WDT), and operating temperature range (-40°C ~ 85°C). The PIC16F57-I/P provides enhanced specifications including higher clock speed (20MHz vs. 4MHz), larger program memory (3KB vs. 768B), and reprogrammable FLASH memory instead of OTP.

Q: What is the voltage compatibility between these parts?

A: The PIC16C55-RCI/P operates at 3V ~ 6.25V, while the PIC16F57-I/P operates at 2V ~ 5.5V. The overlapping range is 3V ~ 5.5V. Applications operating within this overlap range can use either part. Applications requiring operation above 5.5V must use the PIC16C55-RCI/P.

Q: Are there any package or mounting differences?

A: No. Both devices use identical 28-DIP (0.600", 15.24mm) through-hole packages, ensuring mechanical and electrical compatibility in PCB layouts designed for either part.

Q: What are the memory differences?

A: The PIC16C55-RCI/P features 768B of OTP (One-Time Programmable) memory, while the PIC16F57-I/P features 3KB of FLASH memory. FLASH memory allows multiple reprogramming cycles, whereas OTP memory can only be programmed once. The PIC16F57-I/P also provides larger RAM (72 x 8 vs. 24 x 8).

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16C55-RCI/P and PIC16F57-I/P are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.