PIC16C57-LPI/P Equivalent & Substitute Parts

Part Overview

The PIC16C57-LPI/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-PDIP package. This device is classified as Active product status and is ROHS3 compliant. 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.

Substiute Parts

PIC16C57-LPI/P

Microchip TechnologyIn Stock: 768PIC16C57-LPI/P Datasheet

Current PartRFQ

PIC16F57-I/P

Microchip TechnologyIn Stock: 4248PIC16F57-I/P Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Core Architecture: Both devices use the PIC core processor with 8-bit architecture
• Memory Capacity: Identical program memory size of 3KB (2K x 12) and RAM of 72 x 8
• I/O Configuration: Both provide 20 I/O pins
• Package Compatibility: Both use 28-DIP (0.600", 15.24mm) through-hole packaging
• Operating Temperature Range: Both support -40°C ~ 85°C
• Compliance: Both are ROHS3 compliant and REACH unaffected

The primary distinction is the program memory type: PIC16C57-LPI/P uses OTP (One-Time Programmable) memory, while PIC16F57-I/P uses FLASH memory, enabling multiple reprogramming cycles.

Parameter Comparison

Engineering Selection Recommendations

Selection between PIC16C57-LPI/P and PIC16F57-I/P depends on application requirements:

PIC16C57-LPI/P is appropriate for production applications where firmware is finalized and does not require field updates. The OTP memory provides cost efficiency in high-volume deployments. Both devices maintain Active product status and full ROHS3 compliance.

PIC16F57-I/P is appropriate for development, prototyping, and applications requiring firmware updates or multiple programming cycles. The FLASH memory enables in-circuit reprogramming. This device also maintains Active product status and ROHS3 compliance.

Both devices are electrically and mechanically compatible within their specified operating parameters. The voltage supply range of PIC16F57-I/P (2V ~ 5.5V) is narrower than PIC16C57-LPI/P (2.5V ~ 6.25V); applications operating below 2.5V or above 5.5V require the original part. The speed difference (40MHz vs 20MHz) reflects the architectural differences between OTP and FLASH variants and should be evaluated against application timing requirements.

Frequently Asked Questions (FAQ)

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

A: Yes, provided the application voltage supply remains within 2V ~ 5.5V and the 20MHz speed specification is acceptable. The identical package, pinout, memory capacity, and I/O configuration ensure mechanical and functional compatibility. Firmware compatibility depends on the specific instruction set implementation in the original design.

Q: What is the primary advantage of PIC16F57-I/P over PIC16C57-LPI/P?

A: PIC16F57-I/P uses FLASH memory, which allows multiple reprogramming cycles without device replacement. PIC16C57-LPI/P uses OTP memory, which is programmed once and cannot be erased or reprogrammed.

Q: Are there voltage supply considerations when substituting?

A: Yes. PIC16C57-LPI/P operates from 2.5V ~ 6.25V, while PIC16F57-I/P operates from 2V ~ 5.5V. Applications requiring operation above 5.5V or below 2.5V must use the original PIC16C57-LPI/P specification.

Q: Do both devices have identical I/O and peripheral configurations?

A: Yes. Both devices provide 20 I/O pins, identical RAM (72 x 8), and the same peripherals (POR, WDT). The 28-DIP package and pinout are identical.

Q: What is the speed difference between these devices?

A: PIC16C57-LPI/P operates at 40MHz, while PIC16F57-I/P operates at 20MHz. Applications with strict timing requirements must verify compatibility with the 20MHz specification of the substitute part.

Q: Are both devices currently available?

A: Both devices maintain Active product status. PIC16C57-LPI/P has 703 units in stock, and PIC16F57-I/P has 4200 units in stock as of the reference date.