PIC16C554-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C554-04E/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 4MHz with 896 bytes of program memory and 80 bytes of RAM, housed in a 20-SSOP surface mount package. The part is currently obsolete, making identification of compatible substitutes essential for legacy system maintenance and component sourcing.

Substiute Parts

PIC16C554-04E/SS

Microchip TechnologyIn Stock: 1127PIC16C554-04E/SS Datasheet

Current PartRFQ

PIC16C554-04I/SS

Microchip TechnologyIn Stock: 2188PIC16C554-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C554-04E/SS is determined by strict alignment of the following critical parameters:

• Core Processor Architecture: PIC processor family
• Core Size: 8-Bit instruction set
• Program Memory Configuration: 896B (512 x 14) OTP memory
• RAM Capacity: 80 x 8 bytes
• I/O Pin Count: 13 pins
• Operating Voltage Range: 3V ~ 5.5V supply compatibility
• Package Type: 20-SSOP form factor with identical pinout
• Speed Rating: 4MHz operation

The substitute part PIC16C554-04I/SS meets all these criteria, differing only in temperature rating and product status classifications that do not affect functional compatibility in standard operating conditions.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C554-04I/SS serves as a direct functional substitute for the PIC16C554-04E/SS. Both devices share identical core architecture, memory configuration, I/O count, and package specifications. The primary distinction is product status: the -04E/SS variant is obsolete while the -04I/SS remains in active production with verified programmability support.

Selection of the PIC16C554-04I/SS is appropriate for applications where the operating temperature range of -40°C to 85°C satisfies system requirements. Both parts maintain ROHS3 compliance and identical electrical specifications across the 3V to 5.5V supply range.

Frequently Asked Questions (FAQ)

Q: Can PIC16C554-04I/SS replace PIC16C554-04E/SS in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters. The -04I/SS variant is currently in active production, making it the appropriate choice for component sourcing.

Q: What is the difference between the -04E and -04I suffixes?

A: The suffix designates the operating temperature range. The -04E/SS operates from -40°C to 125°C, while the -04I/SS operates from -40°C to 85°C. Both are qualified for standard industrial and commercial temperature environments.

Q: Are the pinouts identical between these parts?

A: Yes. Both devices use the 20-SSOP package with identical pinout and I/O configuration (13 I/O pins).

Q: Do both parts support the same programming methods?

A: The PIC16C554-04I/SS is verified as programmable by DiGi-Electronics. Both parts use OTP memory technology and are compatible with standard PIC programming tools.

Q: What compliance certifications apply to both parts?

A: Both the PIC16C554-04E/SS and PIC16C554-04I/SS are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99.