PIC16C55-LPE/SP Equivalent & Substitute Parts

Part Overview

The PIC16C55-LPE/SP is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 768B of OTP (One-Time Programmable) memory and 20 I/O pins in a 28-SPDIP package. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production support. The PIC16C55-LPI/SP serves as the direct equivalent, offering identical core functionality with updated product status and extended supply voltage range.

Substiute Parts

PIC16C55-LPE/SP

Microchip TechnologyIn Stock: 1032PIC16C55-LPE/SP Datasheet

Current PartRFQ

PIC16C55-LPI/SP

Microchip TechnologyIn Stock: 1119PIC16C55-LPI/SP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Core processor architecture (PIC)
• Core size (8-Bit)
• Operating speed (40MHz)
• Program memory capacity and type (768B OTP)
• RAM configuration (24 x 8)
• I/O pin count (20)
• Peripheral set (POR, WDT)
• Physical package (28-DIP)
• Mounting technology (Through Hole)

The PIC16C55-LPI/SP maintains identical specifications across all these parameters, establishing it as a direct functional equivalent. Differences in supply voltage range and operating temperature reflect product line variations rather than functional incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C55-LPI/SP is the appropriate substitute for the obsolete PIC16C55-LPE/SP. Both devices maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental consistency. The PIC16C55-LPI/SP carries active product status, providing assured long-term availability and manufacturing support.

Selection between these parts depends on application-specific requirements:

• Applications operating within -40°C to 85°C temperature range and 2.5V to 6.25V supply voltage should use PIC16C55-LPI/SP.
• Applications requiring the extended temperature range of -40°C to 125°C and supply voltage up to 6V should evaluate the PIC16C55-LPE/SP availability through authorized distributors before committing to redesign.

Both parts are functionally interchangeable at the core processor level, with identical memory architecture, I/O configuration, and peripheral functionality.

Frequently Asked Questions (FAQ)

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

A: Yes, for applications operating within the PIC16C55-LPI/SP specifications. The core processor, memory configuration, I/O count, and package are identical. Verify that your application's operating temperature range (-40°C to 85°C) and supply voltage range (2.5V to 6.25V) are compatible with the substitute part.

Q: What is the difference between the supply voltage ranges?

A: PIC16C55-LPE/SP supports 2.5V to 6V, while PIC16C55-LPI/SP supports 2.5V to 6.25V. If your design operates above 6V, the PIC16C55-LPE/SP may be required, though availability is limited due to obsolete status.

Q: Are there package differences between these parts?

A: No. Both parts use the 28-DIP (0.300", 7.62mm) package with through-hole mounting. PCB layouts and socket compatibility are identical.

Q: What does "obsolete" product status mean for PIC16C55-LPE/SP?

A: Obsolete status indicates that Microchip Technology has discontinued active manufacturing and support. Existing inventory may be available through authorized distributors, but long-term supply is not guaranteed. The PIC16C55-LPI/SP, with active status, is the recommended path for new designs.

Q: Are both parts RoHS compliant?

A: Yes. Both PIC16C55-LPE/SP and PIC16C55-LPI/SP are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting environmental and regulatory requirements for industrial and commercial applications.