PIC16C55-LPE/SS Equivalent & Substitute Parts

Part Overview

The PIC16C55-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 part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

PIC16C55-LPE/SS

Microchip TechnologyIn Stock: 801PIC16C55-LPE/SS Datasheet

Current PartRFQ

PIC16C55-LPI/SS

Microchip TechnologyIn Stock: 1082PIC16C55-LPI/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PIC16C55-LPE/SS is determined by strict equivalence across the following critical parameters:

• Core processor architecture (PIC)
• Memory configuration (768B program memory, 24 x 8 RAM)
• I/O pin count (20 pins)
• Package type and dimensions (28-SSOP)
• Operating speed (40MHz)
• Supply voltage compatibility
• Peripheral set (POR, WDT)

The PIC16C55-LPI/SS qualifies as a direct substitute based on identical core specifications, memory architecture, I/O configuration, and package format. Differences in product status, operating temperature range, and supply voltage upper limit do not affect functional substitution in applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C55-LPI/SS is the qualified substitute for the obsolete PIC16C55-LPE/SS. Both parts maintain identical electrical and mechanical specifications across all critical parameters including memory architecture, I/O configuration, and package format. The substitute part carries Active product status with verified programmability through DiGi-Electronics, ensuring continued availability and support.

The PIC16C55-LPI/SS exhibits a narrower operating temperature range (-40°C to 85°C versus -40°C to 125°C) and a marginally extended supply voltage upper limit (6.25V versus 6V). These differences are non-limiting for applications originally specified for the PIC16C55-LPE/SS operating within standard industrial temperature and voltage parameters.

Both parts maintain ROHS3 compliance and identical MSL ratings, supporting equivalent handling and storage requirements in production environments.

Frequently Asked Questions (FAQ)

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

A: Yes. The substitute part maintains identical core processor architecture, memory configuration (768B program memory, 24 x 8 RAM), I/O pin count (20), and 28-SSOP package format. Pin-for-pin and functional compatibility is assured.

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

A: The PIC16C55-LPE/SS is classified as obsolete, indicating discontinued manufacturing. The PIC16C55-LPI/SS carries Active status, ensuring ongoing production availability and supply chain continuity for new applications and replacement inventory.

Q: Are there temperature or voltage operating range considerations for substitution?

A: The substitute part operates across -40°C to 85°C, compared to the original part's -40°C to 125°C range. For applications requiring operation above 85°C, the original specification must be maintained. The substitute supports supply voltages up to 6.25V versus 6V for the original part, providing marginal additional headroom within standard industrial voltage tolerances.

Q: Do both parts require identical PCB layout and design considerations?

A: Yes. Both parts use the 28-SSOP package with identical pin assignments, dimensions (0.209", 5.30mm width), and electrical characteristics. PCB layouts designed for the PIC16C55-LPE/SS require no modification for the PIC16C55-LPI/SS.

Q: What compliance certifications apply to the substitute part?

A: The PIC16C55-LPI/SS maintains ROHS3 compliance and carries an MSL rating of 1 (Unlimited), matching the original part's environmental and handling requirements.