PIC16C54T-LPE/SS Equivalent & Substitute Parts

Part Overview

The PIC16C54T-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 operates at 40MHz with 768B of program memory and 12 I/O pins, making it suitable for cost-sensitive embedded control applications.

The PIC16C54T-LPE/SS carries an Obsolete product status. Locating equivalent or substitute parts is necessary to support legacy system maintenance, design updates, or when original inventory becomes unavailable. Direct substitutes with Active status provide continuity for ongoing production and support requirements.

Substiute Parts

PIC16C54T-LPE/SS

Microchip TechnologyIn Stock: 1206PIC16C54T-LPE/SS Datasheet

Current PartRFQ

PIC16C54-LPI/SS

Microchip TechnologyIn Stock: 1012PIC16C54-LPI/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C54T-LPE/SS is determined by strict alignment of the following core parameters:

• Core Processor & Architecture: Must be PIC processor family
• Core Size: Must be 8-Bit
• Speed: Must be 40MHz
• Program Memory: Must be 768B (512 x 12) OTP
• RAM Size: Must be 25 x 8
• I/O Count: Must be 12 pins
• Package: Must be 20-SSOP with identical physical dimensions
• Peripherals: Must include POR and WDT
• Oscillator Type: Must be External
• Mounting Type: Must be Surface Mount

The PIC16C54-LPI/SS meets all substitution criteria and is classified as a direct equivalent. Both parts share identical electrical specifications, memory architecture, and pinout configuration, with the primary distinction being product status and operating temperature range variance.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C54-LPI/SS is a direct functional equivalent to the PIC16C54T-LPE/SS. Both devices are ROHS3 compliant and carry MSL Rating 1, ensuring compatibility with modern manufacturing and storage requirements.

The primary distinction is product status: the PIC16C54T-LPE/SS is Obsolete, while the PIC16C54-LPI/SS maintains Active status with verified programmability through DiGi-Electronics. For new designs or ongoing production requiring long-term supply assurance, the PIC16C54-LPI/SS is the appropriate selection.

The operating temperature range of the PIC16C54-LPI/SS (-40°C ~ 85°C) is narrower than the main part (-40°C ~ 125°C). Applications requiring operation above 85°C must retain the original PIC16C54T-LPE/SS specification or evaluate alternative architectures.

The voltage supply range of the PIC16C54-LPI/SS extends to 6.25V compared to 6V for the main part, providing marginally improved high-voltage tolerance. Both ranges are compatible with standard 5V and 3.3V supply architectures.

Frequently Asked Questions (FAQ)

Q: Can the PIC16C54-LPI/SS replace the PIC16C54T-LPE/SS in existing designs?

A: Yes, for applications operating within -40°C to 85°C. The PIC16C54-LPI/SS is electrically and mechanically identical, with identical pinout, memory configuration, and peripheral set. If your application requires operation above 85°C, the original specification must be retained.

Q: What is the difference between these part numbers?

A: Both parts are PIC16C54 base devices with OTP memory. The suffix variations (T-LPE vs. -LPI) indicate different temperature grades and product lifecycle status. The PIC16C54-LPI/SS is the Active production variant.

Q: Are both parts in the same package?

A: Yes. Both use the 20-SSOP package with identical physical dimensions (0.209", 5.30mm Width). PCB footprints and assembly processes are directly compatible.

Q: What compliance certifications apply to both parts?

A: Both the PIC16C54T-LPE/SS and PIC16C54-LPI/SS are ROHS3 compliant and REACH unaffected. MSL Rating 1 applies to both, indicating unlimited shelf life under controlled storage conditions.

Q: Why is the PIC16C54T-LPE/SS marked as Obsolete?

A: Obsolete status indicates Microchip Technology has discontinued active production and support for this specific variant. The PIC16C54-LPI/SS represents the current production equivalent and is recommended for new applications and ongoing supply continuity.

Q: Are there voltage supply differences I should consider?

A: The PIC16C54-LPI/SS supports 2.5V ~ 6.25V versus 2.5V ~ 6V for the main part. Both operate across standard industrial supply ranges. The extended upper limit of the substitute provides marginal additional headroom in high-voltage applications.