PIC16CE625-04/SS Equivalent & Substitute Parts

Part Overview

The PIC16CE625-04/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP (One-Time Programmable) memory, 13 I/O pins, and operation across 3V to 5.5V supply voltage. This device is classified as Active product status with verified programmability through DiGi-Electronics. Finding equivalent substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when higher speed operation is required, or when extended temperature range support is needed for specific applications.

Substiute Parts

PIC16CE625-04/SS

Microchip TechnologyIn Stock: 6504PIC16CE625-04/SS Datasheet

Current PartRFQ

PIC16F628A-I/SS

Microchip TechnologyIn Stock: 1251PIC16F628A-I/SS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16CE625-04/SS is determined by the following critical parameters:

Memory Architecture: The primary distinction between the main part and its substitute is the program memory type. The PIC16CE625-04/SS uses OTP (One-Time Programmable) memory, which cannot be erased or reprogrammed after initial programming. Substitute parts must maintain identical program memory capacity (4.6KB / 2K x 14) while offering FLASH memory technology for field reprogrammability.

Package Compatibility: Both the main part and substitute must use the 20-SSOP package with identical physical dimensions (0.209", 5.30mm Width) to ensure PCB layout compatibility without redesign.

Voltage Supply Range: The supply voltage range of 3V to 5.5V must be maintained across all substitute parts to ensure operation within the same power distribution systems.

Core Architecture: All parts must maintain the 8-bit PIC core processor architecture to ensure instruction set compatibility and firmware portability.

I/O Pin Count: The number of I/O pins must be equal or greater than the original 13 pins to support existing circuit designs.

The PIC16F628A-I/SS qualifies as a direct substitute based on these parameters while offering enhanced capabilities including FLASH memory reprogrammability, higher speed operation (20MHz), extended temperature range (-40°C to 85°C), and additional I/O pins (16).

Parameter Comparison

Engineering Selection Recommendations

The PIC16F628A-I/SS is classified as an Active product with ROHS3 compliance and REACH Unaffected status, matching the regulatory compliance profile of the PIC16CE625-04/SS. Both devices maintain identical RoHS and REACH certifications, ensuring compatibility within regulated supply chains.

The substitution is supported by identical package geometry, matching voltage supply specifications, and equivalent core memory capacity. The PIC16F628A-I/SS provides additional operational headroom through FLASH memory technology, higher clock speed capability, extended temperature range, increased RAM allocation, and additional I/O pins. These enhancements do not introduce incompatibility with existing designs but rather expand the operational envelope for the application.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F628A-I/SS directly replace the PIC16CE625-04/SS in existing PCB designs?

A: Yes. Both devices use identical 20-SSOP packaging with matching pin assignments and voltage supply requirements (3V to 5.5V). No PCB layout modifications are required for physical substitution.

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

A: The PIC16CE625-04/SS uses OTP (One-Time Programmable) memory that cannot be erased after programming. The PIC16F628A-I/SS uses FLASH memory, which is field-reprogrammable. This allows firmware updates without component replacement.

Q: Are there any firmware compatibility considerations?

A: Both devices share the same 8-bit PIC core architecture and identical program memory capacity (4.6KB). Firmware written for the PIC16CE625-04/SS will execute on the PIC16F628A-I/SS. The PIC16F628A-I/SS supports higher clock speeds (20MHz vs. 4MHz), which may require timing adjustments in delay-sensitive code sections.

Q: Does the PIC16F628A-I/SS support the same operating temperature range?

A: No. The PIC16CE625-04/SS operates from 0°C to 70°C, while the PIC16F628A-I/SS operates from -40°C to 85°C. The substitute part supports an extended temperature range, making it suitable for applications requiring wider environmental tolerance.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the PIC16CE625-04/SS and PIC16F628A-I/SS are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the difference in I/O pin count?

A: The PIC16CE625-04/SS provides 13 I/O pins, while the PIC16F628A-I/SS provides 16 I/O pins. The additional pins on the substitute part do not create incompatibility; they provide expanded I/O capability for applications requiring additional signal connections.