PIC16F84A-20E/SS Equivalent & Substitute Parts

Part Overview

The PIC16F84A-20E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, featuring 1.75KB FLASH program memory, 64 x 8 EEPROM, and 68 x 8 RAM. Operating at 20MHz with 13 I/O pins, this device is designed for embedded control applications requiring external oscillator configuration. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and new design implementations.

Substiute Parts

PIC16F84A-20E/SS

Microchip TechnologyIn Stock: 1252PIC16F84A-20E/SS Datasheet

Current PartRFQ

PIC16F84A-20I/SS

Microchip TechnologyIn Stock: 2230PIC16F84A-20I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F84A-20E/SS is determined by strict equivalence across the following critical parameters:

Core Architecture: PIC 8-bit processor with identical instruction set compatibility Memory Configuration: 1.75KB FLASH program memory, 64 x 8 EEPROM, 68 x 8 RAM Speed Rating: 20MHz operation I/O Count: 13 I/O pins Package: 20-SSOP form factor with identical pinout Supply Voltage: 4V ~ 5.5V operating range Peripheral Set: POR (Power-On Reset) and WDT (Watchdog Timer)

The substitute part PIC16F84A-20I/SS maintains identical electrical and functional specifications across all these parameters, with the primary distinction being the operating temperature range and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F84A-20I/SS serves as a direct functional substitute for the PIC16F84A-20E/SS. Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The substitute part carries Active product status, ensuring continued availability and manufacturer support, whereas the main part is classified as Obsolete.

The operating temperature range differs between the two parts: the main part operates from -40°C to 125°C, while the substitute operates from -40°C to 85°C. This distinction is critical for applications requiring extended high-temperature operation beyond 85°C. For applications operating within the -40°C to 85°C range, the substitute part provides equivalent performance with superior supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can PIC16F84A-20I/SS replace PIC16F84A-20E/SS in existing designs?

A: Yes, for applications operating within the -40°C to 85°C temperature range. Both parts share identical core architecture, memory configuration, I/O count, speed rating, and 20-SSOP package. Verify your application's maximum operating temperature requirement before substitution.

Q: What is the significance of the "E" and "I" designators in the part numbers?

A: These designators indicate different temperature grade classifications. The "E" suffix specifies the -40°C to 125°C range, while the "I" suffix specifies the -40°C to 85°C range. All other electrical and functional specifications remain identical.

Q: Are both parts pin-compatible?

A: Yes. Both the PIC16F84A-20E/SS and PIC16F84A-20I/SS use the 20-SSOP package with identical pinout and mechanical dimensions (0.209" width, 5.30mm).

Q: Why is the main part classified as Obsolete?

A: Microchip Technology has transitioned the PIC16F84A-20E/SS to obsolete status. The PIC16F84A-20I/SS remains in active production, providing a path for design continuity and component sourcing.

Q: Are there any compliance differences between the two parts?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical regulatory certifications (ECCN: EAR99, HTSUS: 8542.31.0001).