PIC16F84A-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16F84A-04E/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 4MHz with 13 I/O pins, this device is designed for embedded applications requiring basic microcontroller functionality with external oscillator support. The part is currently classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design considerations.

Substiute Parts

PIC16F84A-04E/SS

Microchip TechnologyIn Stock: 1210PIC16F84A-04E/SS Datasheet

Current PartRFQ

PIC16F84A-04I/SS

Microchip TechnologyIn Stock: 1960PIC16F84A-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16F84A-04E/SS is determined by strict alignment of the following critical parameters:

• Core processor architecture (PIC)
• Core size (8-Bit)
• Program memory capacity and type (1.75KB FLASH)
• EEPROM and RAM specifications (64 x 8 and 68 x 8 respectively)
• I/O pin count (13)
• Supply voltage range (4V ~ 5.5V)
• Package type and physical dimensions (20-SSOP)
• Peripheral set (POR, WDT)

The PIC16F84A-04I/SS qualifies as a direct substitute based on identical electrical specifications and package configuration. Differences in product status, operating temperature range, and packaging format do not affect functional compatibility in applications designed for the PIC16F84A-04E/SS.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F84A-04I/SS is a functionally equivalent substitute for the PIC16F84A-04E/SS. Both devices share identical electrical and mechanical specifications, ensuring pin-for-pin compatibility and functional interchangeability in circuit designs.

The primary distinction is product status: the PIC16F84A-04E/SS is obsolete, while the PIC16F84A-04I/SS maintains active production status. For new designs or system refreshes, the PIC16F84A-04I/SS is the appropriate selection due to ongoing manufacturer support and availability.

The operating temperature range of the PIC16F84A-04I/SS (-40°C ~ 85°C) is narrower than the main part (-40°C ~ 125°C). Applications requiring operation above 85°C must retain the PIC16F84A-04E/SS or evaluate alternative microcontroller families.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, supporting standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Are the PIC16F84A-04E/SS and PIC16F84A-04I/SS pin-compatible?

A: Yes. Both devices use the 20-SSOP package with identical pin assignments, memory architecture, and peripheral configuration. Direct PCB substitution is supported without layout modifications.

Q: What is the difference between the -04E and -04I designations?

A: The suffix indicates packaging format and product status. The -04E variant is obsolete; the -04I variant is in active production. Electrical and functional specifications are identical.

Q: Can the PIC16F84A-04I/SS be used in applications requiring operation above 85°C?

A: No. The PIC16F84A-04I/SS is rated for -40°C ~ 85°C operation. Applications requiring higher temperature operation must use the PIC16F84A-04E/SS or select an alternative microcontroller with appropriate temperature specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16F84A-04E/SS and PIC16F84A-04I/SS are ROHS3 compliant and suitable for applications subject to RoHS regulations.

Q: What packaging formats are available for these parts?

A: Both parts are supplied in 20-SSOP surface mount packages. The PIC16F84A-04I/SS is available in tube packaging; packaging format for the PIC16F84A-04E/SS is not specified in available data.