PIC16C621-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16C621-04E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 1.75KB OTP program memory, 80 bytes of RAM, and 13 I/O pins in a 20-SSOP surface mount package. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

PIC16C621-04E/SS

Microchip TechnologyIn Stock: 865PIC16C621-04E/SS Datasheet

Current PartRFQ

PIC16C621-04I/SS

Microchip TechnologyIn Stock: 1118PIC16C621-04I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C621-04E/SS is determined by strict equivalence across the following critical parameters:

• Processor Architecture: PIC core processor
• Memory Configuration: 1.75KB OTP program memory, 80 x 8 RAM
• I/O Count: 13 I/O pins
• Operating Voltage: 3V ~ 6V supply range
• Package: 20-SSOP form factor with identical 0.209" (5.30mm) width
• Mounting: Surface mount technology
• Compliance: ROHS3 and REACH compliance maintained

The PIC16C621-04I/SS qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and operating temperature range, which do not preclude functional substitution in applications within the overlapping temperature specification.

Parameter Comparison

Engineering Selection Recommendations

The PIC16C621-04I/SS is a direct functional equivalent to the PIC16C621-04E/SS. Selection between these parts should be based on the following criteria:

For applications operating within -40°C to +85°C: The PIC16C621-04I/SS is the preferred choice due to its active product status, ensuring continued availability and manufacturing support from Microchip Technology. This part maintains full electrical and mechanical compatibility.

For applications requiring extended temperature operation above +85°C: The PIC16C621-04E/SS specification of -40°C to +125°C may be necessary. However, given its obsolete status, procurement should be verified through authorized distributors prior to design commitment.

Both parts maintain ROHS3 compliance and identical packaging, ensuring PCB-level compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the PIC16C621-04I/SS directly replace the PIC16C621-04E/SS on existing PCBs?

A: Yes. Both parts use identical 20-SSOP packaging with matching pin assignments, I/O configuration, and electrical specifications. No PCB modifications are required.

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

A: The suffix indicates packaging and temperature grade. The -04E variant specifies -40°C to +125°C operating range, while -04I specifies -40°C to +85°C. Both use OTP memory and identical core architecture.

Q: Is the PIC16C621-04I/SS suitable for high-temperature applications?

A: The PIC16C621-04I/SS is rated to +85°C maximum. Applications requiring operation above this temperature require the PIC16C621-04E/SS specification or alternative device selection.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.31.0001).

Q: What is the availability status of each part?

A: The PIC16C621-04I/SS is active production with current inventory. The PIC16C621-04E/SS is obsolete; procurement availability should be confirmed with authorized distributors.