PIC16LC558-04E/P Equivalent & Substitute Parts

Part Overview

The PIC16LC558-04E/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB of OTP (One-Time Programmable) memory and 13 I/O pins. This device operates at 4MHz with a supply voltage range of 2.5V to 5.5V and includes integrated Power-On Reset (POR) and Watchdog Timer (WDT) peripherals. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing system support and new design implementations.

Substiute Parts

PIC16LC558-04E/P

Microchip TechnologyIn Stock: 1172PIC16LC558-04E/P Datasheet

Current PartRFQ

PIC16LC558-04I/P

Microchip TechnologyIn Stock: 1036PIC16LC558-04I/P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LC558-04E/P is determined by strict alignment of the following critical parameters:

• Core Processor Architecture: Must be PIC platform
• Core Size: Must be 8-Bit
• Program Memory Configuration: Must be 4.6KB (2K x 14) OTP
• RAM Size: Must be 128 x 8
• I/O Count: Must be 13 pins
• Supply Voltage Range: Must support 2.5V ~ 5.5V
• Peripheral Set: Must include POR and WDT
• Package Type: Must be 18-DIP (0.300", 7.62mm)
• Mounting Configuration: Must be Through Hole

The PIC16LC558-04I/P qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility across all critical parameters.

Parameter Comparison

Engineering Selection Recommendations

The PIC16LC558-04I/P serves as the direct substitute for the obsolete PIC16LC558-04E/P. Both devices maintain identical electrical and mechanical specifications across all critical parameters, ensuring functional compatibility in existing circuit designs.

The primary distinction between these parts is product lifecycle status: the main part is obsolete while the substitute is active. The substitute part carries ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), meeting current regulatory requirements for component procurement.

The operating temperature range differs between the two variants. The main part supports -40°C to 125°C, while the substitute supports -40°C to 85°C. Applications requiring operation above 85°C must evaluate this thermal specification against system requirements.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts share identical core processor architecture, memory configuration, I/O count, supply voltage range, peripheral set, and 18-DIP package specifications. Direct pin-for-pin and functional compatibility is established.

Q: What is the significance of the temperature range difference?

A: The main part operates to 125°C while the substitute operates to 85°C. For applications operating within the 85°C maximum, this difference is not a constraint. Applications requiring operation above 85°C must source alternative components rated for higher temperatures.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16LC558-04E/P and PIC16LC558-04I/P are ROHS3 compliant, meeting current environmental and regulatory standards for component manufacturing and procurement.

Q: What packaging considerations apply to this substitution?

A: Both parts use identical 18-DIP (0.300", 7.62mm) through-hole packaging. No PCB layout modifications or socket changes are required for substitution.

Q: Why is the main part listed as obsolete?

A: Product obsolescence reflects Microchip Technology's lifecycle management. The PIC16LC558-04I/P, as an active product, represents the current manufacturing option for this device family and should be specified for new designs and ongoing production.