PIC16LC558-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC558-04E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP program memory, 128 x 8 bytes of RAM, and 13 I/O pins in a 20-SSOP surface mount package. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and production continuity.

Substiute Parts

PIC16LC558-04E/SS

Microchip TechnologyIn Stock: 909PIC16LC558-04E/SS Datasheet

Current PartRFQ

PIC16LC558-04I/SS

Microchip TechnologyIn Stock: 1115PIC16LC558-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LC558-04E/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: 4.6KB (2K x 14) OTP configuration
• RAM Configuration: 128 x 8 bytes
• I/O Pin Count: 13 pins minimum
• Package Type: 20-SSOP surface mount form factor
• Voltage Supply Range: 2.5V ~ 5.5V compatibility
• Speed Rating: 4MHz operation

The PIC16LC558-04I/SS qualifies as a direct substitute based on identical core architecture, memory configuration, I/O count, package type, and voltage supply specifications. Differences in operating temperature range and product status do not affect functional substitutability in applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The PIC16LC558-04I/SS is a direct functional equivalent to the PIC16LC558-04E/SS. Both parts maintain identical core specifications, memory architecture, I/O configuration, and package form factor. The substitute part carries Active product status, ensuring continued availability and supply chain support compared to the Obsolete status of the original part.

Both parts maintain ROHS3 compliance and identical electrical specifications across voltage supply and speed ratings. The operating temperature range difference (-40°C ~ 85°C for the substitute versus -40°C ~ 125°C for the original) should be evaluated against specific application thermal requirements. For applications operating within the -40°C ~ 85°C window, the substitute part provides equivalent performance with superior supply availability.

Frequently Asked Questions (FAQ)

Q: Can the PIC16LC558-04I/SS replace the PIC16LC558-04E/SS in existing designs?

A: Yes. Both parts share identical core processor architecture, memory configuration (4.6KB OTP program memory, 128 x 8 RAM), I/O pin count (13), package type (20-SSOP), and voltage supply range (2.5V ~ 5.5V). Pin-for-pin compatibility is maintained.

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

A: The suffix designates the operating temperature range. The -04E variant supports -40°C ~ 125°C operation, while the -04I variant supports -40°C ~ 85°C operation. All other electrical and functional specifications remain identical.

Q: Is the 20-SSOP package identical between both parts?

A: Yes. Both parts use the 20-SSOP (0.209", 5.30mm Width) surface mount package with identical pinout and mechanical dimensions.

Q: Why is the original part marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The PIC16LC558-04I/SS maintains Active status, providing continued manufacturing support and supply availability.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16LC558-04E/SS and PIC16LC558-04I/SS are ROHS3 compliant.