PIC16C57-LPE/SO Equivalent & Substitute Parts

Part Overview

The PIC16C57-LPE/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 3KB OTP (One-Time Programmable) memory, 20 I/O pins, and a 40MHz operating speed. This device is actively produced and widely used in embedded applications requiring fixed firmware implementation. Finding equivalent or substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when supply constraints occur, or when design requirements shift toward FLASH-based solutions for field updates.

Substiute Parts

PIC16C57-LPE/SO

Microchip TechnologyIn Stock: 855PIC16C57-LPE/SO Datasheet

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PIC16F57-E/SO

Microchip TechnologyIn Stock: 1275PIC16F57-E/SO Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C57-LPE/SO is determined by strict alignment of core electrical and mechanical parameters:

Critical Substitution Parameters:

• Core processor family (PIC)
• Core size (8-Bit)
• Program memory size (3KB / 2K x 12)
• RAM capacity (72 x 8)
• I/O pin count (20)
• Package type (28-SOIC)
• Operating temperature range (-40°C ~ 125°C)
• Peripheral set (POR, WDT)

The PIC16F57-E/SO qualifies as a direct substitute because it maintains identical values across all critical parameters. The primary difference is the program memory type: the substitute uses FLASH instead of OTP, enabling field reprogrammability while preserving all functional and physical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16C57-LPE/SO and PIC16F57-E/SO maintain active product status from Microchip Technology and comply with ROHS3 and REACH requirements. Both devices carry EAR99 classification and unlimited moisture sensitivity levels, indicating equivalent regulatory and environmental compliance profiles.

The selection between these parts depends on application requirements:

• PIC16C57-LPE/SO is appropriate for fixed-firmware applications where code does not require field updates and OTP memory meets production volume and cost objectives.

• PIC16F57-E/SO is appropriate for applications requiring firmware flexibility, field reprogrammability, or development cycles involving multiple code iterations. The FLASH memory type enables in-circuit programming without device replacement.

Note the operating speed difference: the main part operates at 40MHz while the substitute operates at 20MHz. Verify that application timing requirements are compatible with the 20MHz specification of the substitute before selection.

Frequently Asked Questions (FAQ)

Q: Can PIC16F57-E/SO directly replace PIC16C57-LPE/SO in existing designs?

A: Physical and electrical compatibility is confirmed. Both devices use identical 28-SOIC packaging, maintain the same I/O pin count (20), RAM capacity (72 x 8), and program memory size (3KB). Operating temperature ranges are identical. However, the substitute operates at 20MHz versus the main part's 40MHz. Verify that your application timing does not require the higher clock speed before substitution.

Q: What is the primary functional difference between these parts?

A: The main difference is program memory type. PIC16C57-LPE/SO uses OTP (One-Time Programmable) memory, which is programmed once during manufacturing and cannot be changed. PIC16F57-E/SO uses FLASH memory, which can be erased and reprogrammed multiple times, enabling field updates and development flexibility.

Q: Are there voltage supply differences I should consider?

A: Yes. PIC16C57-LPE/SO operates at 2.5V ~ 6V, while PIC16F57-E/SO operates at 2V ~ 5.5V. Ensure your power supply design falls within the substitute's narrower range if substitution is planned.

Q: Do both parts have the same peripheral set?

A: Yes. Both devices include Power-On Reset (POR) and Watchdog Timer (WDT) peripherals.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both PIC16C57-LPE/SO and PIC16F57-E/SO are ROHS3 compliant and REACH unaffected, with identical moisture sensitivity levels (MSL 1 - Unlimited).