PIC16CE624-04/SS Equivalent & Substitute Parts

Part Overview

The PIC16CE624-04/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 1.75KB OTP (One-Time Programmable) memory, 13 I/O pins, and operation at 4MHz. 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 reprogramming capability, when higher performance specifications are needed, or when inventory constraints affect procurement timelines.

Substiute Parts

PIC16CE624-04/SS

Microchip TechnologyIn Stock: 696PIC16CE624-04/SS Datasheet

Current PartRFQ

PIC16F627A-I/SS

Microchip TechnologyIn Stock: 7504PIC16F627A-I/SS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16CE624-04/SS is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Core processor family: PIC
• Core size: 8-Bit
• Program memory size: 1.75KB (1K x 14)
• Package type: 20-SSOP
• Voltage supply range: 3V ~ 5.5V
• Mounting type: Surface Mount

Allowable Variation Parameters:

• Program memory type: OTP to FLASH (FLASH provides reprogrammability advantage)
• Speed: 4MHz to higher frequencies (backward compatible)
• Operating temperature range: Expansion acceptable
• I/O pin count: Increase acceptable if package footprint maintained
• RAM size: Increase acceptable
• Peripherals: Addition of features acceptable

The PIC16F627A-I/SS qualifies as a direct substitute based on identical program memory capacity, matching package specification, compatible voltage supply range, and maintained 8-bit architecture within the PIC family.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F627A-I/SS serves as a qualified substitute for the PIC16CE624-04/SS based on the following engineering criteria:

Compliance & Certification Alignment: Both devices maintain ROHS3 compliance and Active product status, ensuring long-term availability and regulatory consistency in production environments.

Functional Equivalence: Identical program memory capacity (1.75KB), EEPROM size (128 x 8), and voltage supply specifications (3V ~ 5.5V) establish direct functional equivalence for applications designed around the original part.

Performance Enhancement: The substitute provides increased operational speed (20MHz vs. 4MHz), expanded operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C), additional I/O pins (16 vs. 13), and increased RAM capacity (224 x 8 vs. 96 x 8), all within the identical 20-SSOP package footprint.

Memory Technology Advantage: Transition from OTP to FLASH memory type enables field reprogrammability, eliminating single-programming constraints inherent to OTP devices.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F627A-I/SS directly replace the PIC16CE624-04/SS in existing PCB designs?

A: Yes. Both devices utilize the 20-SSOP package with identical pin spacing (0.209", 5.30mm width) and footprint dimensions. No PCB layout modifications are required for physical substitution.

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

A: The main difference is program memory type. The PIC16CE624-04/SS uses OTP (One-Time Programmable) memory, allowing a single programming cycle. The PIC16F627A-I/SS uses FLASH memory, enabling multiple reprogramming cycles without device replacement.

Q: Are the voltage supply requirements identical?

A: Yes. Both devices operate within the 3V ~ 5.5V supply range, maintaining identical power supply specifications and decoupling requirements.

Q: Does the increased speed of the PIC16F627A-I/SS (20MHz vs. 4MHz) affect compatibility?

A: No. Higher speed is backward compatible. Applications designed for 4MHz operation function correctly at 20MHz. The substitute provides performance headroom without requiring design modifications.

Q: Is the expanded operating temperature range of the PIC16F627A-I/SS (-40°C ~ 85°C) a concern?

A: No. The expanded range is a superset of the original specification (0°C ~ 70°C). Applications operating within the original temperature range experience no adverse effects.

Q: How do the additional I/O pins (16 vs. 13) and increased RAM (224 x 8 vs. 96 x 8) affect substitution?

A: These are enhancements that do not compromise compatibility. Existing designs utilizing 13 I/O pins and 96 x 8 RAM operate without modification. The additional resources remain available for future application expansion.

Q: Are both devices currently available for procurement?

A: Yes. Both devices maintain Active product status. The PIC16CE624-04/SS has 627 units in stock, while the PIC16F627A-I/SS has 7425 units in stock, providing superior availability for the substitute part.

Q: Do both devices meet the same compliance standards?

A: Yes. Both are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status, ensuring identical regulatory and environmental compliance.