PIC16LC65B-04I/P Equivalent & Substitute Parts

Part Overview

The PIC16LC65B-04I/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 7KB OTP program memory, 192 x 8 bytes of RAM, and 33 I/O pins. The device operates at 4MHz with a supply voltage range of 2.5V to 5.5V and includes integrated peripherals such as Brown-out Detect/Reset, Power-on Reset (POR), PWM, and Watchdog Timer (WDT). The product maintains Active status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the allowed tolerance specifications for this microcontroller category, enabling direct functional replacement in existing designs.

Substiute Parts

PIC16LC65B-04I/P

Microchip TechnologyIn Stock: 2090PIC16LC65B-04I/P Datasheet

Current PartRFQ

PIC16F724-I/P

Microchip TechnologyIn Stock: 1205PIC16F724-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PIC16LC65B-04I/P is determined by the following critical parameters:

• Core Architecture: Must be PIC 8-bit processor
• Program Memory Capacity: Must be 7KB (4K x 14)
• RAM Configuration: Must be 192 x 8 bytes
• I/O Pin Count: Must be 33 or greater
• Package Compatibility: Must be 40-DIP (0.600", 15.24mm) through-hole
• Voltage Supply Range: Must encompass or exceed 2.5V ~ 5.5V
• Operating Temperature Range: Must support -40°C ~ 85°C
• Connectivity Interfaces: Must include I2C, SPI, UART/USART
• Peripheral Set: Must include Brown-out Detect/Reset, POR, PWM, WDT
• Product Status: Must be Active
• Compliance: Must maintain RoHS3 compliance

The PIC16F724-I/P qualifies as a manufacturer-recommended substitute based on these parameters while offering enhanced specifications in program memory type (FLASH vs. OTP) and maximum operating speed (20MHz vs. 4MHz).

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16LC65B-04I/P and PIC16F724-I/P maintain Active product status with full RoHS3 compliance and REACH unaffected certification. Selection between these devices is determined by application-specific requirements:

The PIC16LC65B-04I/P is appropriate for applications requiring OTP program memory with fixed firmware deployment and lower operating speed requirements at 4MHz.

The PIC16F724-I/P is appropriate for applications requiring reprogrammable FLASH memory, higher processing speed at 20MHz, extended I/O capability (36 pins vs. 33), and lower minimum supply voltage operation (1.8V vs. 2.5V). Both devices share identical package footprint, pin count compatibility, and peripheral feature sets, enabling direct substitution in 40-DIP through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can PIC16F724-I/P directly replace PIC16LC65B-04I/P in existing PCB designs?

A: Yes. Both devices use identical 40-DIP (0.600", 15.24mm) through-hole packaging with compatible pinout. Pin-to-pin compatibility is maintained for all 40 pins.

Q: What are the key differences between OTP and FLASH program memory types?

A: OTP (One-Time Programmable) memory is programmed once during manufacturing and cannot be reprogrammed. FLASH memory is reprogrammable, allowing firmware updates in the field or during development cycles.

Q: Does the PIC16F724-I/P require different supply voltage conditioning?

A: The PIC16F724-I/P supports a lower minimum supply voltage of 1.8V compared to 2.5V for the PIC16LC65B-04I/P. Existing 2.5V ~ 5.5V supply designs remain compatible with the substitute part.

Q: Are the I/O pin counts interchangeable?

A: The PIC16F724-I/P provides 36 I/O pins versus 33 on the PIC16LC65B-04I/P. The additional I/O pins do not conflict with existing designs; unused pins can remain unconnected.

Q: What is the impact of the 20MHz versus 4MHz speed difference?

A: The PIC16F724-I/P operates at 5x the clock speed, enabling faster instruction execution and higher throughput. Existing firmware designed for 4MHz operation will execute faster on the substitute part without modification, provided timing-critical code does not depend on specific clock frequencies.

Q: Are both devices RoHS3 compliant?

A: Yes. Both the PIC16LC65B-04I/P and PIC16F724-I/P maintain full RoHS3 compliance and are REACH unaffected.