PIC16C58B-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C58B-20E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 3KB OTP program memory, 12 I/O pins, and operation up to 20MHz. This device is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and component procurement. The substitute part maintains core functional equivalence while offering different packaging, compliance, and operational specifications.

Substiute Parts

PIC16C58B-20E/SS

Microchip TechnologyIn Stock: 1010PIC16C58B-20E/SS Datasheet

Current PartRFQ

PIC16C58B-20I/SS

Microchip TechnologyIn Stock: 946PIC16C58B-20I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC16C58B-20I/SS qualifies as a direct substitute based on the following alignment of critical parameters:

• Core Architecture: Both parts use the PIC core processor with identical 8-bit architecture
• Memory Configuration: Identical 3KB OTP program memory (2K x 12) and 73 x 8 RAM
• Speed Rating: Both operate at 20MHz maximum frequency
• I/O Count: Both provide 12 I/O pins
• Supply Voltage: Both support 3V ~ 5.5V operating range
• Peripherals: Both include POR (Power-On Reset) and WDT (Watchdog Timer)
• Package: Both use 20-SSOP surface mount package with identical physical dimensions

Substitution is valid where the operating temperature range and compliance certifications are acceptable for the application.

Parameter Comparison

Engineering Selection Recommendations

PIC16C58B-20I/SS is the functional equivalent for applications where the following conditions are met:

• Temperature Range Compatibility: The substitute operates to 85°C maximum, compared to 125°C for the main part. Select this substitute only if your application's maximum operating temperature does not exceed 85°C.

• Compliance Requirements: The main part (PIC16C58B-20E/SS) carries RoHS3 compliance certification. The substitute (PIC16C58B-20I/SS) is RoHS non-compliant. Applications subject to RoHS regulatory requirements must use the main part or identify alternative compliant solutions.

• Product Availability: The main part is obsolete. The substitute is active and available in production quantities (886 Pcs in stock), making it the preferred choice for new procurement when compliance and temperature requirements are satisfied.

• Packaging: The substitute is supplied in Tube packaging, whereas the main part packaging is unspecified. Confirm tube packaging compatibility with your assembly process.

Frequently Asked Questions (FAQ)

Q: Can PIC16C58B-20I/SS replace PIC16C58B-20E/SS in all applications?

A: No. Substitution is valid only when both the operating temperature maximum does not exceed 85°C and RoHS non-compliance is acceptable for your application. If your design requires operation above 85°C or mandates RoHS3 compliance, this substitute is not suitable.

Q: What is the difference between the -20E and -20I designations?

A: The letter designation indicates different temperature and compliance specifications. The -20E variant supports extended temperature range (-40°C to 125°C) and is RoHS3 compliant. The -20I variant operates to -40°C to 85°C and is RoHS non-compliant. Both maintain identical core functionality and memory configuration.

Q: Are the physical packages identical?

A: Yes. Both parts use the 20-SSOP package with identical dimensions (0.209" width, 5.30mm). PCB footprints and mechanical mounting are interchangeable.

Q: What does OTP program memory mean?

A: OTP (One-Time Programmable) memory can be programmed once during manufacturing or initial device configuration. Once programmed, the memory contents cannot be erased or reprogrammed. This differs from flash memory, which supports multiple program/erase cycles.

Q: Why is the main part listed as obsolete?

A: Microchip Technology has discontinued the PIC16C58B-20E/SS. The PIC16C58B-20I/SS remains in active production. For new designs or ongoing support of legacy systems, the active substitute is the recommended procurement path.

Q: Are there any functional differences in the peripherals?

A: No. Both parts include identical peripheral support: POR (Power-On Reset) and WDT (Watchdog Timer). Peripheral functionality and register definitions are equivalent.