PIC12LCE674-04I/P Equivalent & Substitute Parts

Part Overview

The PIC12LCE674-04I/P is an 8-bit microcontroller from Microchip Technology's PIC® 12C series, featuring 4.6KB OTP (One-Time Programmable) memory, designed for embedded applications requiring low-power operation and basic I/O control. The device operates at 4MHz with a supply voltage range of 2.5V to 5.5V and includes integrated peripherals such as Power-On Reset (POR) and Watchdog Timer (WDT). This part is currently in active production status with verified programmability through DiGi-Electronics. Finding equivalent or substitute parts may be necessary due to inventory constraints, design optimization requirements, or the need for enhanced memory types or operating speeds.

Substiute Parts

PIC12LCE674-04I/P

Microchip TechnologyIn Stock: 2262PIC12LCE674-04I/P Datasheet

Current PartRFQ

PIC12F683-I/P

Microchip TechnologyIn Stock: 7003PIC12F683-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC12LCE674-04I/P is based on strict compatibility across the following critical parameters:

• Core Architecture: Both main and substitute parts must use the PIC core processor with 8-bit architecture
• Package Compatibility: Identical 8-DIP (0.300", 7.62mm) through-hole package ensures direct PCB compatibility
• Memory Architecture: Same 4.6KB (2K x 14) program memory size and 128 x 8 RAM capacity
• I/O Configuration: Identical 5 I/O pins for functional equivalence
• Operating Temperature Range: Matching -40°C to 85°C specification
• Supply Voltage Compatibility: Overlapping or equivalent voltage operating ranges

The PIC12F683-I/P qualifies as a direct substitute based on these parameters. While it features FLASH memory instead of OTP and operates at higher speed (20MHz vs. 4MHz), these represent functional enhancements rather than incompatibilities. The substitute maintains identical package, pin count, memory size, RAM capacity, and I/O configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC12LCE674-04I/P and PIC12F683-I/P maintain active product status with ROHS3 compliance and REACH unaffected classification. Selection between these parts should be based on application-specific requirements:

The PIC12LCE674-04I/P is appropriate for applications where OTP memory is specified and 4MHz operation is sufficient. The PIC12F683-I/P provides enhanced capabilities through FLASH memory (enabling field reprogramming), higher clock speed (20MHz), expanded EEPROM (256 x 8 vs. 16 x 8), and improved analog resolution (10-bit vs. 8-bit A/D conversion). Both devices are verified as programmable through DiGi-Electronics and maintain identical mechanical and electrical interfaces.

Frequently Asked Questions (FAQ)

Q: Can the PIC12F683-I/P directly replace the PIC12LCE674-04I/P in existing designs?

A: Yes, from a mechanical and electrical interface perspective. Both devices use identical 8-DIP packaging, pin configuration, and I/O count. However, the memory type difference (FLASH vs. OTP) and enhanced peripherals in the PIC12F683-I/P may require firmware validation to ensure compatibility with existing code.

Q: What is the primary difference between OTP and FLASH memory in these devices?

A: OTP (One-Time Programmable) memory in the PIC12LCE674-04I/P can be programmed once during manufacturing. FLASH memory in the PIC12F683-I/P allows multiple reprogramming cycles, enabling field updates and development flexibility.

Q: Are there any voltage supply considerations when substituting these parts?

A: The PIC12LCE674-04I/P operates from 2.5V to 5.5V, while the PIC12F683-I/P operates from 2V to 5.5V. The PIC12F683-I/P extends the lower voltage limit, making it suitable for lower-power applications. Both are compatible with standard 3.3V and 5V supply systems.

Q: How do the operating speeds affect application performance?

A: The PIC12LCE674-04I/P operates at 4MHz, while the PIC12F683-I/P operates at 20MHz. The higher speed of the substitute part provides faster instruction execution and improved real-time response capabilities. Applications designed for 4MHz operation will function correctly at 20MHz with potential performance improvements.

Q: Are both parts suitable for the same temperature range applications?

A: Yes, both devices specify identical operating temperature ranges of -40°C to 85°C, making them suitable for equivalent industrial and commercial applications.

Q: What is the significance of the different A/D converter specifications?

A: The PIC12LCE674-04I/P features 4-channel 8-bit A/D conversion, while the PIC12F683-I/P provides 4-channel 10-bit A/D conversion. The higher resolution in the substitute part offers improved analog measurement precision for applications requiring greater accuracy.