PIC16C56-HSE/SS Equivalent & Substitute Parts

Part Overview

The PIC16C56-HSE/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 1.5KB of OTP (One-Time Programmable) memory and 12 I/O pins in a 20-SSOP surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support, redesigns, and production continuity. The primary substitute identified maintains core functional compatibility while offering enhanced specifications and active product status.

Substiute Parts

PIC16C56-HSE/SS

Microchip TechnologyIn Stock: 880PIC16C56-HSE/SS Datasheet

Current PartRFQ

PIC16C56-HSI/SS

Microchip TechnologyIn Stock: 868PIC16C56-HSI/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C56-HSE/SS is determined by the following critical parameters:

Core Compatibility Parameters:

• Core Processor: PIC
• Core Size: 8-Bit
• Program Memory Type: OTP
• Program Memory Size: 1.5KB (1K x 12)
• RAM Size: 25 x 8
• Number of I/O: 12
• Package / Case: 20-SSOP (0.209", 5.30mm Width)
• Voltage Supply Range: 4.5V ~ 5.5V

Allowable Variation Parameters:

• Speed: May increase (backward compatible)
• Operating Temperature Range: May be narrower (device-dependent)
• Product Status: Active status preferred for ongoing availability

The identified substitute maintains identical core memory architecture, I/O configuration, package footprint, and voltage specifications, ensuring direct functional compatibility in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C56-HSI/SS serves as a direct substitute for the obsolete PIC16C56-HSE/SS. Both devices share identical memory architecture, I/O configuration, and package specifications, enabling pin-for-pin and code-compatible replacement.

Selection Basis:

The PIC16C56-HSI/SS is recommended for new designs and production continuity due to its active product status with Microchip Technology. The device maintains ROHS3 compliance and unlimited moisture sensitivity rating, consistent with the original part. The increased clock speed (20MHz versus 16MHz) provides performance headroom without introducing compatibility issues, as the instruction set and memory organization remain unchanged.

The narrower operating temperature range (-40°C ~ 85°C versus -40°C ~ 125°C) should be evaluated against specific application requirements. Applications requiring the extended upper temperature limit of 125°C must retain the original PIC16C56-HSE/SS or identify alternative solutions outside the PIC16C56 family.

Frequently Asked Questions (FAQ)

Q: Can the PIC16C56-HSI/SS replace the PIC16C56-HSE/SS in existing designs?

A: Yes. The PIC16C56-HSI/SS is a direct substitute. Both devices feature identical core architecture, memory configuration (1.5KB OTP), I/O count (12 pins), and 20-SSOP package footprint. Existing firmware requires no modification.

Q: What is the difference between the two parts?

A: The primary differences are clock speed (20MHz versus 16MHz) and operating temperature range (-40°C ~ 85°C versus -40°C ~ 125°C). The PIC16C56-HSI/SS offers higher speed capability and active product status. The narrower temperature range may be a constraint for high-temperature applications.

Q: Are there package compatibility concerns?

A: No. Both parts use the 20-SSOP (0.209", 5.30mm Width) surface mount package. PCB layouts and assembly processes require no modification.

Q: What is the voltage supply requirement?

A: Both devices operate within the 4.5V ~ 5.5V supply range. Power supply design and decoupling requirements remain identical.

Q: Why is the original part listed as obsolete?

A: The PIC16C56-HSE/SS has reached end-of-life status with Microchip Technology. The PIC16C56-HSI/SS remains in active production, ensuring long-term availability and supply chain continuity.

Q: Are compliance certifications maintained?

A: Yes. Both parts are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Compliance documentation remains valid for both devices.