PIC16C55T-LPE/SS Equivalent & Substitute Parts

Part Overview

The PIC16C55T-LPE/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, 24 x 8 bytes of RAM, and 20 I/O pins, operating at speeds up to 40MHz across a supply voltage range of 2.5V to 6V.

The PIC16C55T-LPE/SS carries an Obsolete product status. Locating equivalent or substitute components becomes necessary for ongoing system support, maintenance, and new production runs where original inventory is depleted or unavailable.

Substiute Parts

PIC16C55T-LPE/SS

Microchip TechnologyIn Stock: 1011PIC16C55T-LPE/SS Datasheet

Current PartRFQ

PIC16C55-LPI/SS

Microchip TechnologyIn Stock: 1082PIC16C55-LPI/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C55T-LPE/SS is determined by strict alignment of the following critical parameters:

• Core Processor & Architecture: Must be PIC processor family
• Core Size: Must be 8-Bit
• Program Memory: Must be 768B (512 x 12) OTP
• RAM Configuration: Must be 24 x 8 bytes
• I/O Count: Must provide 20 I/O pins
• Speed Rating: Must support 40MHz operation
• Package: Must be 28-SSOP form factor
• Peripherals: Must include POR and WDT functionality
• Supply Voltage Compatibility: Operating voltage ranges must overlap with application requirements

The PIC16C55-LPI/SS qualifies as a direct substitute based on identical core specifications, matching memory architecture, I/O configuration, and package form factor. Differences in product status and operating temperature range do not affect functional substitution within applications designed for the original part's specifications.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C55-LPI/SS is a qualified substitute for the PIC16C55T-LPE/SS based on functional equivalence across all critical electrical and mechanical parameters. Both devices share identical core architecture, memory configuration, I/O capability, and package specifications.

The substitute part carries Active product status, ensuring ongoing availability and manufacturing support from Microchip Technology. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, supporting equivalent handling and storage requirements.

The operating temperature range difference (PIC16C55T-LPE/SS: -40°C to 125°C versus PIC16C55-LPI/SS: -40°C to 85°C) requires evaluation against specific application thermal requirements. Applications operating within the -40°C to 85°C window experience no thermal limitation. Applications requiring operation above 85°C must retain the original part specification or identify alternative solutions outside the PIC16C55 base product family.

The supply voltage range of the substitute (2.5V to 6.25V) encompasses the original specification (2.5V to 6V), providing equivalent or expanded operating margin depending on application design.

Frequently Asked Questions (FAQ)

Q: Can the PIC16C55-LPI/SS directly replace the PIC16C55T-LPE/SS in existing designs?

A: Yes, for applications operating within the -40°C to 85°C temperature range. The substitute part matches all critical electrical specifications, memory architecture, I/O configuration, and 28-SSOP package form factor. Thermal requirements above 85°C require design review.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The original part is Obsolete, indicating discontinued manufacturing and limited inventory availability. The substitute is Active, ensuring continued production and supply chain support from Microchip Technology for future procurement needs.

Q: Are there any compliance or certification differences between these parts?

A: Both parts maintain identical RoHS3 compliance status and Moisture Sensitivity Level (MSL) ratings. No compliance or certification barriers exist for substitution.

Q: How do the supply voltage ranges compare?

A: The substitute part (2.5V to 6.25V) provides a slightly wider upper voltage margin than the original (2.5V to 6V). Applications designed for the original specification operate within the substitute's voltage window without modification.

Q: What packaging considerations apply to this substitution?

A: Both parts use identical 28-SSOP surface mount packaging (0.209" width, 5.30mm). No PCB layout, footprint, or assembly process modifications are required.

Q: Are there any programming or firmware compatibility issues?

A: Both parts use identical OTP (One-Time Programmable) memory architecture with 768B program memory (512 x 12 configuration). Firmware developed for the original part operates without modification on the substitute.