PIC16LC72-04/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC72-04/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, designed for embedded applications requiring low-power operation. This device features 4.6KB of OTP (One-Time Programmable) memory, 22 I/O pins, and integrated peripherals including PWM, watchdog timer, and brown-out detection. The part is currently in active production status with 1040 units available in stock. Alternative models become necessary when application requirements demand higher speed operation, reprogrammable memory, or extended temperature range support.

Substiute Parts

PIC16LC72-04/SS

Microchip TechnologyIn Stock: 1089PIC16LC72-04/SS Datasheet

Current PartRFQ

PIC16LF72-I/SS

Microchip TechnologyIn Stock: 5613PIC16LF72-I/SS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC72-04/SS is determined by the following critical parameters:

• Core Processor Architecture: Must be PIC to ensure instruction set compatibility
• Core Size: Must remain 8-Bit
• Program Memory Size: Must be 4.6KB (2K x 14) to maintain code capacity
• Number of I/O Pins: Must be 22 to preserve pinout compatibility
• Package Type: Must be 28-SSOP to ensure mechanical and electrical fit
• Mounting Type: Must be Surface Mount

The PIC16LF72-I/SS qualifies as a direct substitute because it maintains identical core architecture, memory capacity, I/O count, and package specifications. The primary differences—FLASH memory instead of OTP, higher speed rating, and extended temperature range—represent functional enhancements rather than compatibility barriers.

Parameter Comparison

Engineering Selection Recommendations

Both devices maintain ROHS3 compliance, REACH unaffected status, and identical export classification (EAR99). The PIC16LF72-I/SS is suitable for applications requiring reprogrammable memory capability, higher clock frequency operation, or extended temperature range operation. The PIC16LC72-04/SS remains appropriate for cost-sensitive applications where OTP memory and standard temperature range operation are acceptable. Both parts carry MSL Level 1 rating, indicating no moisture sensitivity restrictions during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the PIC16LF72-I/SS directly replace the PIC16LC72-04/SS in existing designs?

A: Yes, the PIC16LF72-I/SS is a direct pin-compatible substitute. Both devices use the 28-SSOP package with identical pinout and 22 I/O configuration. The FLASH memory type of the substitute provides additional flexibility for firmware updates compared to the OTP memory of the original part.

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

A: The primary differences are program memory type (OTP versus FLASH), maximum clock speed (4MHz versus 20MHz), and operating temperature range (0°C ~ 70°C versus -40°C ~ 85°C). The supply voltage range differs slightly (2.5V ~ 6V versus 2V ~ 5.5V).

Q: Are there any compatibility concerns with the supply voltage ranges?

A: The PIC16LF72-I/SS has a lower minimum supply voltage (2V versus 2.5V) and slightly lower maximum voltage (5.5V versus 6V). Designs operating within the 2.5V ~ 5.5V window are fully compatible with both parts.

Q: Does the higher speed rating of the PIC16LF72-I/SS affect power consumption?

A: Speed capability does not inherently increase power consumption. Actual power consumption depends on clock frequency used in the application. Operating the PIC16LF72-I/SS at 4MHz (matching the original part's speed) will not increase power draw due to the higher speed rating alone.

Q: Are both parts suitable for industrial temperature applications?

A: The PIC16LC72-04/SS operates within 0°C ~ 70°C. The PIC16LF72-I/SS extends this range to -40°C ~ 85°C, making it suitable for industrial and extended temperature applications. Selection depends on specific application temperature requirements.

Q: What is the significance of the FLASH memory type in the substitute part?

A: FLASH memory allows in-circuit reprogramming without device replacement, whereas OTP memory is programmed once during manufacturing. This provides development and field update flexibility with the PIC16LF72-I/SS.