PIC16C57T-LPI/SO Equivalent & Substitute Parts

Part Overview

The PIC16C57T-LPI/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 3KB of OTP (One-Time Programmable) memory and 20 I/O pins in a 28-SOIC surface mount package. This device is actively supported and widely used in embedded applications requiring low-cost, reliable microcontroller solutions.

Finding equivalent and substitute parts becomes necessary when the original part reaches end-of-life status, inventory constraints occur, or design requirements shift toward enhanced programmability. The PIC16F57T-I/SO represents a direct functional upgrade path, offering FLASH memory reprogrammability while maintaining pin-compatible operation.

Substiute Parts

PIC16C57T-LPI/SO

Microchip TechnologyIn Stock: 1233PIC16C57T-LPI/SO Datasheet

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PIC16F57T-I/SO

Microchip TechnologyIn Stock: 3288PIC16F57T-I/SO Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C57T-LPI/SO is determined by the following critical parameters:

• Core Processor & Architecture: Must be PIC family to ensure instruction set compatibility
• Core Size: Must remain 8-Bit for software and hardware interface compatibility
• Program Memory Size: Must be 3KB (2K x 12) to support existing firmware without modification
• RAM Size: Must be 72 x 8 to maintain data storage capacity
• Number of I/O: Must be 20 pins to ensure pinout compatibility
• Package / Case: Must be 28-SOIC to fit existing PCB layouts without redesign
• Operating Temperature Range: Must support -40°C ~ 85°C minimum
• Peripherals: Must include POR (Power-On Reset) and WDT (Watchdog Timer)

The PIC16F57T-I/SO qualifies as a direct substitute based on these parameters. The primary difference—FLASH memory instead of OTP—represents a functional enhancement that does not compromise compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16C57T-LPI/SO and PIC16F57T-I/SO maintain Active product status with full compliance to ROHS3 and REACH regulations. Both devices carry MSL Level 1 (Unlimited) moisture sensitivity classification, indicating equivalent handling and storage requirements.

The PIC16F57T-I/SO is suitable for applications where firmware reprogrammability is required or where design flexibility justifies the substitution. The FLASH memory type enables in-circuit programming and field updates, whereas the OTP variant of the main part is programmed once during manufacturing.

Both parts are manufactured by Microchip Technology and carry identical compliance certifications (ECCN: EAR99, HTSUS: 8542.31.0001), ensuring regulatory equivalence for export and supply chain purposes.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F57T-I/SO directly replace the PIC16C57T-LPI/SO on an existing PCB?

A: Yes. Both devices use the 28-SOIC package with identical pinout, I/O count (20), and peripheral configuration (POR, WDT). No PCB redesign is required.

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

A: The main part uses OTP (One-Time Programmable) memory, while the substitute uses FLASH memory. FLASH memory allows multiple programming cycles and in-circuit reprogramming, whereas OTP is programmed once during manufacturing.

Q: Are the memory sizes identical?

A: Yes. Both parts feature 3KB (2K x 12) program memory and 72 x 8 RAM, ensuring firmware compatibility without modification.

Q: Do both parts support the same operating temperature range?

A: Yes. Both devices operate across -40°C to 85°C (TA), meeting identical thermal specifications.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN and HTSUS classifications.

Q: What is the speed difference between these parts?

A: The main part operates at 40MHz, while the substitute operates at 20MHz. This difference does not affect pin compatibility or instruction set compatibility but may impact application performance requirements.