PIC16C57-RCI/P Equivalent & Substitute Parts

Part Overview

The PIC16C57-RCI/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 3KB OTP (One-Time Programmable) memory and 20 I/O pins in a 28-DIP package. This device operates at 4MHz with a supply voltage range of 3V to 6.25V and includes integrated Power-On Reset (POR) and Watchdog Timer (WDT) peripherals. The part is currently in active production status with verified programmability through DiGi-Electronics. Substitute parts are necessary when OTP memory limitations require reprogrammable FLASH alternatives, when higher operating speeds are required, or when extended voltage range compatibility is needed for specific applications.

Substiute Parts

PIC16C57-RCI/P

Microchip TechnologyIn Stock: 5546PIC16C57-RCI/P Datasheet

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PIC16F57-I/P

Microchip TechnologyIn Stock: 4248PIC16F57-I/P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The PIC16F57-I/P qualifies as a direct substitute based on the following alignment of critical parameters:

Matching Parameters:

• Identical core processor architecture (PIC)
• Identical core size (8-Bit)
• Identical program memory size (3KB / 2K x 12)
• Identical RAM size (72 x 8)
• Identical I/O count (20 pins)
• Identical package type and dimensions (28-DIP, 0.600", 15.24mm)
• Identical peripheral set (POR, WDT)
• Identical mounting type (Through Hole)
• Identical manufacturer (Microchip Technology)
• Identical operating temperature range (-40°C ~ 85°C)

Differentiating Parameters:

• Program memory type: OTP (PIC16C57) vs. FLASH (PIC16F57)
• Operating speed: 4MHz (PIC16C57) vs. 20MHz (PIC16F57)
• Supply voltage range: 3V ~ 6.25V (PIC16C57) vs. 2V ~ 5.5V (PIC16F57)

The substitution is valid because the PIC16F57-I/P maintains identical memory architecture, I/O configuration, and package form factor while offering enhanced reprogrammability through FLASH memory and increased processing speed.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16C57-RCI/P and PIC16F57-I/P maintain active product status with full RoHS3 compliance and REACH unaffected classification. The PIC16C57-RCI/P is appropriate for applications where OTP memory is acceptable and lower operating speed requirements exist. The PIC16F57-I/P is suitable for applications requiring in-system reprogrammability through FLASH memory technology and higher processing speeds up to 20MHz. Both devices carry identical EAR99 export classification and are verified as programmable through DiGi-Electronics. Selection between these parts depends on application requirements for memory reprogrammability and processing speed rather than compliance or certification factors.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F57-I/P directly replace the PIC16C57-RCI/P in existing designs?

A: Yes, the PIC16F57-I/P is a direct pin-compatible substitute. Both devices use identical 28-DIP packaging with matching pinout, I/O count (20), and peripheral configuration (POR, WDT). No PCB modifications are required.

Q: What are the key differences between OTP and FLASH memory types?

A: OTP (One-Time Programmable) memory in the PIC16C57 can be programmed once during manufacturing. FLASH memory in the PIC16F57 allows multiple reprogramming cycles, enabling field updates and development flexibility.

Q: Does the higher speed of the PIC16F57-I/P (20MHz vs. 4MHz) affect compatibility?

A: Higher speed does not create incompatibility. The PIC16F57-I/P operates at 20MHz maximum, while the PIC16C57 operates at 4MHz. Applications designed for 4MHz operation will function correctly with the faster device. Timing-critical applications may require validation.

Q: Are there voltage supply differences I should consider?

A: The PIC16C57 operates from 3V to 6.25V, while the PIC16F57 operates from 2V to 5.5V. Both ranges overlap from 3V to 5.5V. Applications using supply voltages above 5.5V require the PIC16C57.

Q: Do both parts have identical memory capacity?

A: Yes, both devices feature 3KB program memory (2K x 12) and 72 x 8 RAM. Memory capacity is not a differentiating factor between these parts.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. No compliance differences exist between the two devices.