PIC12LC672-04I/P Equivalent & Substitute Parts

Part Overview

The PIC12LC672-04I/P is an 8-bit microcontroller from Microchip Technology's PIC® 12C series, featuring 4.6KB OTP (One-Time Programmable) memory, 4MHz operation, and 5 I/O pins in an 8-PDIP package. This device is actively produced and widely used in embedded applications requiring low-cost, compact microcontroller solutions with basic analog and digital capabilities.

Finding equivalent or substitute parts becomes necessary when the original part reaches end-of-life status, inventory constraints occur, or design requirements shift toward enhanced capabilities such as reprogrammable memory or higher operating speeds. The PIC12LC672-04I/P's OTP memory limitation and 4MHz speed may also drive substitution in applications requiring FLASH memory or faster processing.

Substiute Parts

PIC12LC672-04I/P

Microchip TechnologyIn Stock: 995PIC12LC672-04I/P Datasheet

Current PartRFQ

PIC12F683-I/P

Microchip TechnologyIn Stock: 7003PIC12F683-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC12F683-I/P qualifies as a direct substitute for the PIC12LC672-04I/P based on the following alignment of critical parameters:

Matching Parameters:

• Core Processor: PIC (same architecture family)
• Core Size: 8-Bit (identical processing capability)
• Program Memory Size: 4.6KB (2K x 14) (identical capacity)
• RAM Size: 128 x 8 (identical working memory)
• Number of I/O: 5 (identical pin count and functionality)
• Voltage - Supply (Vcc/Vdd): 2V ~ 5.5V (compatible range, encompasses original 2.5V ~ 5.5V)
• Mounting Type: Through Hole (identical physical mounting)
• Package / Case: 8-DIP (0.300", 7.62mm) (identical footprint and pinout)
• Operating Temperature: -40°C ~ 85°C (TA) (identical thermal range)
• RoHS Status: ROHS3 Compliant (equivalent compliance)

Enhanced Parameters in Substitute:

• Program Memory Type: FLASH (reprogrammable, versus OTP)
• Speed: 20MHz (higher performance capability)
• Data Converters: A/D 4x10b (improved resolution)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT (additional features)
• EEPROM Size: 256 x 8 (added non-volatile storage)

The PIC12F683-I/P maintains full backward compatibility in pinout, package, memory organization, and supply voltage while offering superior programmability and performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility: The PIC12F683-I/P is a direct pin-compatible and functionally superior substitute for the PIC12LC672-04I/P. Both devices maintain identical pinout, package footprint, and core memory organization, enabling drop-in replacement without PCB redesign.

Compliance & Certification: Both parts carry ROHS3 compliance and REACH unaffected status, meeting equivalent regulatory requirements for industrial and commercial applications. Both are actively produced by Microchip Technology, ensuring long-term availability and supply chain stability.

Performance Considerations: The PIC12F683-I/P operates at 5x the clock speed (20MHz versus 4MHz) and features FLASH memory instead of OTP, enabling in-circuit reprogramming and field updates. The enhanced 10-bit analog-to-digital converter (versus 8-bit) provides improved measurement precision. Additional peripherals including PWM and Brown-out Detect/Reset expand functional capability without increasing package size.

Application Scope: The substitute part is suitable for all applications currently using the PIC12LC672-04I/P. The enhanced specifications do not introduce incompatibilities; they extend operational flexibility and performance headroom.

Frequently Asked Questions (FAQ)

Q: Can the PIC12F683-I/P replace the PIC12LC672-04I/P without modifying the circuit board?

A: Yes. Both devices use identical 8-DIP (0.300", 7.62mm) packaging with matching pinout and I/O configuration. No PCB modifications are required for physical substitution.

Q: What is the primary difference between these two microcontrollers?

A: The main difference is program memory type: the PIC12LC672-04I/P uses OTP (One-Time Programmable) memory, while the PIC12F683-I/P uses FLASH memory. FLASH memory allows multiple reprogramming cycles, enabling field updates and development flexibility. The PIC12F683-I/P also operates at 20MHz versus 4MHz and includes additional peripherals.

Q: Are the supply voltage ranges compatible?

A: Yes. The PIC12LC672-04I/P operates at 2.5V ~ 5.5V, and the PIC12F683-I/P operates at 2V ~ 5.5V. The substitute part's lower minimum voltage (2V) provides broader compatibility with low-power applications while maintaining full compatibility with existing 2.5V ~ 5.5V designs.

Q: Will existing firmware for the PIC12LC672-04I/P run on the PIC12F683-I/P?

A: Firmware compatibility depends on application-specific code. Both devices share the same 8-bit PIC core architecture and identical program memory size (4.6KB). However, the PIC12F683-I/P's additional peripherals (PWM, Brown-out Detect/Reset) and enhanced analog converter may require code adjustments if the original firmware explicitly disables or avoids these features. Core functionality remains compatible.

Q: What is the inventory status of these parts?

A: The PIC12LC672-04I/P has 936 pieces in stock. The PIC12F683-I/P has 6900 pieces in stock, providing significantly greater availability for high-volume production or rapid deployment scenarios.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC12LC672-04I/P and PIC12F683-I/P are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards for industrial, commercial, and consumer applications.