PIC16F84AT-20I/SO Equivalent & Substitute Parts

Part Overview

The PIC16F84AT-20I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, designed for embedded applications requiring moderate program memory and I/O capabilities. This device features 1.75KB of FLASH program memory, 68 bytes of RAM, and 13 I/O pins, operating at 20MHz with an external oscillator. The part maintains Active product status and is RoHS3 compliant. Substitute parts are identified when electrical specifications, memory configuration, pin count, package type, and operating conditions remain identical or functionally equivalent.

Substiute Parts

PIC16F84AT-20I/SO

Microchip TechnologyIn Stock: 1011PIC16F84AT-20I/SO Datasheet

Current PartRFQ

PIC16F84A-20I/SO

Microchip TechnologyIn Stock: 3039PIC16F84A-20I/SO Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F84AT-20I/SO is determined by strict equivalence across the following critical parameters:

• Core Architecture: PIC 8-bit processor
• Memory Configuration: 1.75KB FLASH program memory, 64 x 8 EEPROM, 68 x 8 RAM
• Operating Frequency: 20MHz
• I/O Pin Count: 13 pins
• Package Type: 18-SOIC surface mount
• Supply Voltage Range: 4V ~ 5.5V
• Temperature Range: -40°C ~ 85°C
• Peripheral Set: POR (Power-On Reset), WDT (Watchdog Timer)
• Compliance: RoHS3 compliant, MSL Level 1

The PIC16F84A-20I/SO meets all substitution criteria as a direct equivalent, differing only in packaging format (Tube vs. standard packaging) and inventory availability, with no changes to electrical or functional specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16F84AT-20I/SO and PIC16F84A-20I/SO are Active products with identical electrical and functional specifications. Selection between these parts is based on packaging and supply considerations:

• PIC16F84AT-20I/SO: Standard packaging format with 925 units in stock
• PIC16F84A-20I/SO: Tube packaging format with 3000 units in stock

Both parts maintain RoHS3 compliance and MSL Level 1 rating. The choice between them depends on procurement requirements, packaging preferences, and inventory availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can PIC16F84A-20I/SO replace PIC16F84AT-20I/SO in existing designs?

A: Yes. Both parts are electrically and functionally identical across all specified parameters including memory configuration, I/O count, operating frequency, voltage range, and temperature range. The only difference is packaging format.

Q: What determines substitution eligibility for PIC16F84AT-20I/SO?

A: Substitutes must match all critical parameters: 8-bit PIC core, 20MHz operation, 1.75KB FLASH memory, 13 I/O pins, 18-SOIC package, 4V–5.5V supply range, -40°C to 85°C operating temperature, and POR/WDT peripherals.

Q: Are there differences in pin configuration between these parts?

A: No. Both parts use the 18-SOIC package with identical pin assignments and I/O configuration.

Q: Do packaging differences affect circuit board layout?

A: No. Both parts use the same 18-SOIC (0.295", 7.50mm Width) package footprint, requiring no PCB layout modifications.

Q: Are both parts RoHS compliant?

A: Yes. Both PIC16F84AT-20I/SO and PIC16F84A-20I/SO are RoHS3 compliant with MSL Level 1 rating.