PIC16C72-04/SS Equivalent & Substitute Parts

Part Overview

The PIC16C72-04/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP (One-Time Programmable) memory, 22 I/O pins, and integrated peripherals including PWM, watchdog timer, and brown-out detection. This device is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The transition from OTP to FLASH-based memory technology has driven the development of compatible alternatives that maintain functional equivalence while offering extended operational capabilities.

Substiute Parts

PIC16C72-04/SS

Microchip TechnologyIn Stock: 3062PIC16C72-04/SS Datasheet

Current PartRFQ

PIC16F72-I/SS

Microchip TechnologyIn Stock: 2313PIC16F72-I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C72-04/SS is based on strict equivalence across the following critical parameters:

• Core Architecture: Both main and substitute parts utilize the PIC core processor with 8-bit architecture
• Memory Configuration: Identical program memory size (4.6KB) and RAM allocation (128 x 8)
• I/O Count: Both maintain 22 I/O pins for circuit compatibility
• Peripheral Set: Matching peripheral functionality including PWM, watchdog timer, and brown-out detection
• Package Form Factor: Identical 28-SSOP surface mount package ensures PCB-level compatibility
• Connectivity Protocols: Both support I2C and SPI interfaces
• Compliance Standards: Both meet ROHS3 and REACH requirements

The primary distinction between the main part and its substitute lies in the program memory technology transition from OTP to FLASH, which enables reprogrammability and extended operational temperature ranges while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F72-I/SS serves as the direct substitute for the obsolete PIC16C72-04/SS. Selection of the substitute part is justified by the following factors:

• Product Status: The PIC16C72-04/SS is classified as obsolete, while the PIC16F72-I/SS maintains active product status with ongoing manufacturer support and availability
• Compliance Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs
• Functional Equivalence: Identical core architecture, memory configuration, I/O count, and peripheral set enable direct substitution at the circuit level
• Package Compatibility: Both devices utilize the 28-SSOP surface mount package with identical physical dimensions, allowing PCB-level compatibility without layout modifications
• Enhanced Capabilities: The substitute part offers FLASH memory technology enabling reprogrammability, extended operating temperature range (-40°C to 85°C versus 0°C to 70°C), and higher maximum clock speed (20MHz versus 4MHz), providing design flexibility for future applications

Frequently Asked Questions (FAQ)

Q: Can the PIC16F72-I/SS be used as a direct replacement for the PIC16C72-04/SS in existing designs?

A: Yes. Both devices share identical core architecture, memory size, I/O configuration, peripheral set, and 28-SSOP package form factor. The substitute part maintains functional equivalence at the circuit level. Voltage supply range differences (4V–6V versus 4V–5.5V) must be evaluated for specific applications operating above 5.5V.

Q: What are the key differences between these two parts?

A: The primary differences are program memory technology (OTP versus FLASH), maximum operating speed (4MHz versus 20MHz), operating temperature range (0°C–70°C versus -40°C–85°C), and product status (obsolete versus active). The substitute part offers reprogrammability and extended operational capabilities.

Q: Are there any package or pinout differences?

A: No. Both parts use the 28-SSOP package with identical physical dimensions (0.209" × 5.30mm width) and pinout configuration. No PCB modifications are required for substitution.

Q: Does the substitute part maintain the same peripheral functionality?

A: Yes. Both parts include identical peripheral sets: brown-out detect/reset, power-on reset (POR), pulse-width modulation (PWM), watchdog timer (WDT), and 5-channel 8-bit analog-to-digital converter. I2C and SPI connectivity is maintained.

Q: What compliance certifications apply to the substitute part?

A: The PIC16F72-I/SS maintains ROHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original part. Moisture sensitivity level (MSL) is rated at 1 (unlimited).

Q: Is the substitute part suitable for extended temperature applications?

A: The PIC16F72-I/SS supports an extended operating temperature range of -40°C to 85°C, compared to the original part's 0°C to 70°C range. This makes the substitute part suitable for industrial and automotive temperature environments.