PIC16C554-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C554-20E/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 20MHz with 896B of program memory and 80 x 8 bytes of RAM, featuring 13 I/O pins and integrated peripherals including Power-On Reset (POR) and Watchdog Timer (WDT). The part is classified as Obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

PIC16C554-20E/SS

Microchip TechnologyIn Stock: 770PIC16C554-20E/SS Datasheet

Current PartRFQ

PIC16C554-20I/SS

Microchip TechnologyIn Stock: 910PIC16C554-20I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16C554-20E/SS is determined by strict alignment of the following core parameters:

• Processor Architecture: PIC core processor
• Memory Configuration: 896B program memory (512 x 14), 80 x 8 RAM
• Speed Rating: 20MHz operation
• I/O Count: 13 I/O pins
• Package Format: 20-SSOP surface mount package
• Voltage Range: 3V ~ 5.5V supply compatibility
• Peripheral Set: POR and WDT functionality

The PIC16C554-20I/SS qualifies as a direct substitute based on identical electrical specifications, memory architecture, I/O configuration, and package format. The primary distinction lies in temperature rating and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C554-20I/SS serves as the direct substitute for the obsolete PIC16C554-20E/SS. Both devices maintain identical electrical and functional specifications across all critical parameters including processor architecture, memory configuration, speed rating, I/O count, and package format.

The PIC16C554-20I/SS is classified as Active product status, ensuring continued availability and manufacturing support. Both parts maintain ROHS3 compliance and identical MSL ratings, supporting equivalent handling and storage requirements.

The operating temperature range differs between the two variants: the main part supports -40°C ~ 125°C while the substitute operates within -40°C ~ 85°C. Selection between these variants depends on application temperature requirements. For applications operating within the -40°C ~ 85°C range, the PIC16C554-20I/SS provides full functional equivalence with the advantage of active product status and verified programmability.

Frequently Asked Questions (FAQ)

Q: Can the PIC16C554-20I/SS directly replace the PIC16C554-20E/SS in existing designs?

A: Yes, the PIC16C554-20I/SS provides direct substitution for applications operating within the -40°C ~ 85°C temperature range. Both devices share identical program memory (896B), RAM (80 x 8), I/O configuration (13 pins), speed (20MHz), voltage supply range (3V ~ 5.5V), and 20-SSOP package format.

Q: What is the primary difference between these two part numbers?

A: The main differences are product status and operating temperature range. The PIC16C554-20E/SS is classified as Obsolete with a -40°C ~ 125°C operating range, while the PIC16C554-20I/SS is Active with a -40°C ~ 85°C operating range. All electrical and functional specifications remain identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the identical 20-SSOP surface mount package with 0.209" width and 5.30mm dimensions. Pinout and I/O configuration are identical across both variants.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PIC16C554-20E/SS and PIC16C554-20I/SS are ROHS3 compliant with MSL rating 1 (Unlimited), supporting equivalent handling and storage protocols.

Q: Which part should be selected for new designs?

A: The PIC16C554-20I/SS is the appropriate choice for new designs due to its Active product status, ensuring long-term availability and manufacturing support. The part maintains full functional equivalence with the obsolete variant for applications within the specified temperature range.