PIC16LC57C-04I/SO Equivalent & Substitute Parts

Part Overview

The PIC16LC57C-04I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 3KB OTP (One-Time Programmable) memory and operating at 4MHz. This device is classified as Active product status and is suitable for embedded applications requiring low-cost, single-program deployment. Finding equivalent or substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when higher speed operation is needed, or when inventory constraints necessitate compatible alternatives from the same manufacturer ecosystem.

Substiute Parts

PIC16LC57C-04I/SO

Microchip TechnologyIn Stock: 733PIC16LC57C-04I/SO Datasheet

Current PartRFQ

PIC16F57-I/SO

Microchip TechnologyIn Stock: 55458PIC16F57-I/SO Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LC57C-04I/SO is determined by the following critical parameters:

Core Compatibility Requirements:

• 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 number of I/O pins (20)
• Identical package type (28-SOIC)
• Identical mounting type (Surface Mount)

Allowable Variations:

• Program memory type may differ (OTP to FLASH conversion permitted for reprogrammability)
• Speed may increase (4MHz to higher speeds acceptable for backward compatibility)
• Voltage supply range may expand (2.5V-5.5V to 2V-5.5V acceptable)
• Series designation may change within PIC family (16C to 16F acceptable)

The PIC16F57-I/SO qualifies as a direct substitute based on these criteria, offering FLASH memory reprogrammability while maintaining identical core architecture, memory capacity, I/O configuration, and package specifications.

Parameter Comparison

Engineering Selection Recommendations

PIC16F57-I/SO as Direct Substitute:

The PIC16F57-I/SO is a qualified direct substitute for the PIC16LC57C-04I/SO based on identical core architecture, memory configuration, I/O count, and package specifications. Both devices maintain Active product status and full compliance with ROHS3 and REACH regulations.

The primary technical advantage of the PIC16F57-I/SO is FLASH memory reprogrammability versus OTP, enabling multiple programming cycles without device replacement. The increased speed rating (20MHz versus 4MHz) provides additional operational headroom and does not create compatibility issues in applications designed for the 4MHz variant.

The expanded voltage supply range (2V minimum versus 2.5V minimum) of the substitute part offers broader operational flexibility. Both devices share identical MSL ratings and environmental compliance certifications, ensuring equivalent reliability and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F57-I/SO directly replace the PIC16LC57C-04I/SO in existing designs?

A: Yes. Both devices share identical pinout, package type (28-SOIC), core architecture, memory capacity, and I/O configuration. No PCB modifications or design changes are required for physical substitution.

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

A: The main difference is program memory type. The PIC16LC57C-04I/SO uses OTP (One-Time Programmable) memory, while the PIC16F57-I/SO uses FLASH memory, which is electrically erasable and reprogrammable multiple times. This makes the PIC16F57-I/SO suitable for development, prototyping, and applications requiring firmware updates.

Q: Does the higher speed rating of the PIC16F57-I/SO affect compatibility?

A: No. The PIC16F57-I/SO operates at 20MHz maximum, while the PIC16LC57C-04I/SO operates at 4MHz. Applications designed for the slower device will function correctly with the faster substitute. The higher speed rating provides additional performance margin without creating backward compatibility issues.

Q: Are there any voltage supply considerations when substituting?

A: The PIC16F57-I/SO accepts a minimum supply voltage of 2V, compared to 2.5V for the PIC16LC57C-04I/SO. Both devices support the same maximum voltage (5.5V). The substitute part offers broader low-voltage operation capability, making it suitable for a wider range of power supply designs.

Q: Do both parts have identical environmental compliance?

A: Yes. Both the PIC16LC57C-04I/SO and PIC16F57-I/SO are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). They share identical operating temperature ranges (-40°C to 85°C) and moisture sensitivity classifications.

Q: What packaging options are available for the substitute part?

A: The PIC16F57-I/SO is supplied in Tube packaging, while the main part does not specify packaging format. Both use the identical 28-SOIC physical package for surface mount assembly.