PIC16C54-LPI/P Equivalent & Substitute Parts

Part Overview

The PIC16C54-LPI/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 768B of OTP (One-Time Programmable) memory and 12 I/O pins. This device is classified as Active product status and is widely used in embedded applications requiring permanent code storage. Substitute parts become necessary when OTP memory limitations require reprogrammable alternatives, when supply constraints occur, or when design revisions demand enhanced memory flexibility.

Substiute Parts

PIC16C54-LPI/P

Microchip TechnologyIn Stock: 2294PIC16C54-LPI/P Datasheet

Current PartRFQ

PIC16F54-I/P

Microchip TechnologyIn Stock: 8691PIC16F54-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC16F54-I/P qualifies as a direct substitute based on the following alignment criteria:

Matching Parameters:

• Identical core processor architecture (PIC)
• Identical core size (8-Bit)
• Identical program memory size (768B / 512 x 12)
• Identical number of I/O pins (12)
• Identical RAM size (25 x 8)
• Identical mounting type (Through Hole)
• Identical package specification (18-DIP, 0.300", 7.62mm)
• Identical operating temperature range (-40°C ~ 85°C)
• Both ROHS3 Compliant

Substitution Basis: The primary difference is program memory type: PIC16C54-LPI/P uses OTP (One-Time Programmable) memory, while PIC16F54-I/P uses FLASH memory. This substitution is valid because FLASH memory provides equivalent or superior functionality for the same memory capacity and maintains full pin and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16C54-LPI/P and PIC16F54-I/P are Active products with ROHS3 compliance and REACH Unaffected status, making them suitable for current production designs. The PIC16F54-I/P is the manufacturer-recommended substitute and offers FLASH memory reprogrammability while maintaining identical pin configuration and package dimensions. Selection between these parts depends on application requirements: OTP memory is appropriate for fixed, production-volume applications, while FLASH memory is appropriate for development, field updates, or applications requiring code modification capability. Both devices operate within compatible temperature ranges and supply voltage specifications for most embedded applications, though the PIC16C54-LPI/P supports a slightly extended upper voltage limit (6.25V vs. 5.5V).

Frequently Asked Questions (FAQ)

Q: Can PIC16F54-I/P directly replace PIC16C54-LPI/P in existing designs?

A: Yes. Both devices share identical pin counts (12 I/O), package type (18-DIP), memory capacity (768B), and RAM configuration (25 x 8). No PCB modifications are required for physical substitution.

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

A: The PIC16C54-LPI/P uses OTP (One-Time Programmable) memory, which cannot be erased after programming. The PIC16F54-I/P uses FLASH memory, which is electrically erasable and reprogrammable multiple times.

Q: Are there voltage supply differences I should consider?

A: The PIC16C54-LPI/P operates from 2.5V to 6.25V, while the PIC16F54-I/P operates from 2V to 5.5V. If your application requires operation above 5.5V, the PIC16C54-LPI/P is the appropriate choice. For standard 3.3V or 5V applications, both are compatible.

Q: Is there a speed difference between these microcontrollers?

A: Yes. The PIC16C54-LPI/P operates at 40MHz maximum, while the PIC16F54-I/P operates at 20MHz maximum. If your application requires the higher clock speed, the PIC16C54-LPI/P is necessary.

Q: Do both parts have the same peripheral features?

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

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16C54-LPI/P and PIC16F54-I/P are ROHS3 Compliant and REACH Unaffected.