PIC16F84-04I/SO Equivalent & Substitute Parts

Part Overview

The PIC16F84-04I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16F series, designed for embedded applications requiring basic control and logic functions. This device features 1.75KB of FLASH program memory, 68 bytes of RAM, and 64 bytes of EEPROM, operating at 4MHz with 13 I/O pins. The part is currently active in production with verified programmability and full RoHS3 compliance. Substitute parts are identified when equivalent functional requirements can be met while maintaining compatibility with the 18-SOIC package and core architectural specifications.

Substiute Parts

PIC16F84-04I/SO

Microchip TechnologyIn Stock: 1920PIC16F84-04I/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 PIC16F84-04I/SO is determined by strict alignment with the following core parameters:

• Manufacturer: Microchip Technology
• Core Processor Architecture: PIC
• Core Size: 8-Bit
• Program Memory Type: FLASH with 1.75KB (1K x 14) capacity
• EEPROM Size: 64 x 8
• RAM Size: 68 x 8
• Number of I/O: 13
• Peripherals: POR, WDT
• Package: 18-SOIC form factor
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C (TA)
• RoHS Compliance: ROHS3 Compliant

The PIC16F84A-20I/SO qualifies as a direct substitute based on identical memory architecture, I/O configuration, peripheral set, package specifications, and environmental ratings. The primary difference is the maximum operating speed, which does not restrict substitution in applications designed for the base 4MHz specification.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16F84-04I/SO and PIC16F84A-20I/SO are active production devices with full ROHS3 compliance and verified programmability. Selection between these parts should be based on application speed requirements and supply chain availability. The PIC16F84A-20I/SO supports higher clock frequencies (20MHz maximum) while maintaining identical memory architecture and I/O configuration, making it suitable for applications requiring faster instruction execution. The PIC16F84-04I/SO remains appropriate for applications with lower speed requirements. Both devices meet the same environmental and compliance standards, ensuring equivalent reliability in -40°C to 85°C operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F84A-20I/SO replace the PIC16F84-04I/SO in existing designs?

A: Yes. The PIC16F84A-20I/SO is a direct substitute. Both devices share identical memory capacity, I/O count, peripheral configuration, and 18-SOIC package specifications. The higher maximum speed of the PIC16F84A-20I/SO does not create incompatibility with designs specified for 4MHz operation.

Q: What is the primary difference between these two parts?

A: The maximum operating frequency differs. The PIC16F84-04I/SO operates at 4MHz maximum, while the PIC16F84A-20I/SO operates at 20MHz maximum. All other functional and physical specifications are identical.

Q: Are there supply voltage differences between these parts?

A: Yes. The PIC16F84-04I/SO accepts 4V to 6V supply voltage, while the PIC16F84A-20I/SO accepts 4V to 5.5V. Both operate within standard microcontroller supply ranges and are compatible with typical 5V logic systems.

Q: Do both parts use the same package footprint?

A: Yes. Both devices use the 18-SOIC package with 0.295" width and 7.50mm body width. PCB layouts and footprints are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC16F84-04I/SO and PIC16F84A-20I/SO are ROHS3 compliant and REACH unaffected.