PIC16C54A-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C54A-20E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, designed for embedded applications requiring OTP (One-Time Programmable) memory. This device features 768B of program memory, 25 x 8 bytes of RAM, and operates at speeds up to 20MHz with a supply voltage range of 4.5V to 5.5V. The component is housed in a 20-SSOP surface mount package with 12 I/O pins and includes integrated Power-On Reset (POR) and Watchdog Timer (WDT) peripherals.

The PIC16C54A-20E/SS is classified as obsolete. Finding equivalent or substitute components is necessary due to limited availability of this legacy device and the need for continued system support or new production runs.

Substiute Parts

PIC16C54A-20E/SS

Microchip TechnologyIn Stock: 941PIC16C54A-20E/SS Datasheet

Current PartRFQ

Key Parameters

Substitute Part Grouping Explanation

No substitute parts are currently available in the provided database. Substitution for the PIC16C54A-20E/SS requires identification of alternative components that meet the following critical parameters:

• Core Architecture: PIC 8-bit processor
• Program Memory: Minimum 768B OTP or equivalent reprogrammable memory
• RAM Capacity: Minimum 25 x 8 bytes
• I/O Count: Minimum 12 pins
• Operating Speed: 20MHz or higher
• Supply Voltage: 4.5V to 5.5V compatibility
• Package Type: 20-SSOP surface mount form factor
• Peripherals: Power-On Reset and Watchdog Timer functionality
• Temperature Range: -40°C to 125°C operation

Substitutes must maintain electrical and mechanical compatibility across all specified parameters to ensure direct replacement capability without circuit redesign.

Parameter Comparison

No substitute parts are available for comparison at this time.

Engineering Selection Recommendations

The PIC16C54A-20E/SS is an obsolete component. When seeking alternatives, prioritize components that:

• Maintain identical or superior electrical specifications across all parameters listed in the Key Parameters table
• Preserve the 20-SSOP package footprint for PCB compatibility
• Support the same supply voltage range (4.5V to 5.5V)
• Provide equivalent or greater program and RAM memory capacity
• Retain ROHS3 compliance and MSL Level 1 rating for manufacturing consistency
• Maintain the same operating temperature range (-40°C to 125°C)

Direct pin-for-pin and functional equivalence is required for drop-in replacement without firmware modification.

Frequently Asked Questions (FAQ)

Q: What makes a component a valid substitute for the PIC16C54A-20E/SS?

A: A valid substitute must match or exceed all electrical parameters (core size, speed, memory capacity, I/O count, voltage range, temperature range) and maintain the same 20-SSOP package configuration. The substitute must support the same peripheral functions (POR, WDT) and memory type (OTP or equivalent).

Q: Can I use a different package type as a substitute?

A: No. The 20-SSOP package is a critical mechanical specification. Using a different package requires PCB redesign and may introduce compatibility issues. Package equivalence is mandatory for direct substitution.

Q: Does the substitute need to be from Microchip Technology?

A: Not necessarily. However, the substitute must be from a manufacturer offering equivalent PIC architecture or compatible 8-bit microcontroller families with identical electrical and mechanical specifications.

Q: What is the significance of the OTP memory type?

A: OTP (One-Time Programmable) memory cannot be erased after programming. Substitutes with OTP memory provide identical functionality. Alternatives with FLASH or EEPROM memory offer reprogrammability but remain functionally equivalent if all other parameters match.

Q: How do I verify compatibility before ordering a substitute?

A: Cross-reference the substitute part number against the Key Parameters table. Confirm matching values for core size, speed, memory capacity, I/O count, voltage range, temperature range, and package type. Consult the substitute component's datasheet for detailed electrical specifications.