PIC16C54-RCI/P Equivalent & Substitute Parts

Part Overview

The PIC16C54-RCI/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 in an 18-DIP package. This device is classified as Active product status and is widely used in embedded applications requiring basic microcontroller functionality with external oscillator support.

Finding equivalent and substitute parts becomes necessary when the original PIC16C54-RCI/P reaches end-of-life status, inventory constraints occur, or design requirements shift toward reprogrammable solutions. The PIC16F54-I/P serves as the primary substitute, offering enhanced capabilities while maintaining core compatibility.

Substiute Parts

PIC16C54-RCI/P

Microchip TechnologyIn Stock: 967PIC16C54-RCI/P Datasheet

Current PartRFQ

PIC16F54-I/P

Microchip TechnologyIn Stock: 8691PIC16F54-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C54-RCI/P is determined by the following critical parameters:

• Core Architecture: Both main and substitute parts must use the PIC core processor and maintain 8-bit core size
• Memory Configuration: Program memory size (768B / 512 x 12) and RAM size (25 x 8) must remain identical
• I/O Count: 12 I/O pins are required for functional equivalence
• Package Compatibility: 18-DIP (0.300", 7.62mm) through-hole mounting is mandatory
• Operating Temperature Range: -40°C ~ 85°C (TA) compatibility is required
• Supply Voltage: Substitute parts must operate within overlapping voltage ranges
• Compliance: RoHS3 compliance and REACH status must be maintained

The PIC16F54-I/P qualifies as a substitute based on these parameters. The primary difference is the transition from OTP to FLASH memory technology, which expands operational flexibility while preserving all functional and physical specifications.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F54-I/P is the qualified substitute for PIC16C54-RCI/P based on the following engineering criteria:

Functional Compatibility: Both devices maintain identical core architecture, memory organization, I/O configuration, and physical packaging. The 18-DIP form factor ensures direct socket compatibility in existing PCB designs.

Compliance Status: Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for equivalent component selection.

Product Status: Both devices carry Active product status from Microchip Technology, ensuring continued availability and manufacturing support.

Memory Technology Advantage: The transition from OTP to FLASH memory in the PIC16F54-I/P provides reprogrammability, enabling field updates and development flexibility without requiring component replacement.

Operating Envelope: The PIC16F54-I/P operates within a lower minimum supply voltage (2V vs. 3V) and supports higher clock speeds (20MHz vs. 4MHz), expanding application scope while maintaining backward compatibility with existing 3V ~ 5.5V supply designs.

Frequently Asked Questions (FAQ)

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

A: Yes. Both devices share identical core architecture, memory size, I/O count, and 18-DIP package dimensions. Direct socket substitution is supported without PCB modifications.

Q: What is the primary difference between these parts?

A: The PIC16C54-RCI/P uses OTP (One-Time Programmable) memory, while the PIC16F54-I/P uses FLASH memory. FLASH memory allows multiple reprogramming cycles, whereas OTP memory can only be programmed once during manufacturing.

Q: Are there voltage supply differences?

A: Yes. The PIC16C54-RCI/P operates at 3V ~ 6.25V, while the PIC16F54-I/P operates at 2V ~ 5.5V. The PIC16F54-I/P supports lower minimum voltage but has a lower maximum rating. Designs operating at 3V ~ 5.5V are compatible with both devices.

Q: Does the speed difference affect compatibility?

A: The PIC16F54-I/P supports 20MHz operation compared to 4MHz for the PIC16C54-RCI/P. Higher speed capability does not prevent substitution; designs using the original 4MHz specification will operate correctly at reduced clock rates on the substitute part.

Q: Are both parts RoHS compliant?

A: Yes. Both PIC16C54-RCI/P and PIC16F54-I/P are ROHS3 compliant and REACH Unaffected, meeting environmental and regulatory standards.

Q: What is the package compatibility?

A: Both devices use 18-DIP (0.300", 7.62mm) through-hole packaging. Pin count, spacing, and physical dimensions are identical, ensuring direct PCB compatibility.