ATTINY12L-4SC Equivalent & Substitute Parts

Part Overview

The ATTINY12L-4SC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 1KB of FLASH program memory and operating at 4MHz. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity. The part is housed in an 8-SOIC surface mount package with a supply voltage range of 2.7V to 5.5V and includes integrated peripherals such as Power-On Reset (POR) and Watchdog Timer (WDT).

Substiute Parts

ATTINY12L-4SC

Microchip TechnologyIn Stock: 4770ATTINY12L-4SC Datasheet

Current PartRFQ

ATTINY12L-4SU

AtmelIn Stock: 14731ATTINY12L-4SU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATTINY12L-4SC is determined by strict equivalence across the following critical parameters:

• Core Architecture: AVR processor family
• Memory Configuration: 1KB FLASH program memory (512 x 16), 64 x 8 EEPROM
• Performance: 4MHz clock speed
• I/O Count: 6 I/O pins
• Package: 8-SOIC surface mount form factor
• Supply Voltage: 2.7V to 5.5V operating range
• Integrated Peripherals: POR and WDT functionality

The ATTINY12L-4SU meets all functional and electrical requirements for direct substitution. Both parts share identical core specifications, memory architecture, pin configuration, and peripheral set. Differences exist only in operating temperature range and compliance certifications, which do not affect functional interchangeability in applications designed for the ATTINY12L-4SC.

Parameter Comparison

Engineering Selection Recommendations

The ATTINY12L-4SU is a direct functional equivalent to the ATTINY12L-4SC. Both devices are classified as obsolete products, indicating end-of-life status from their respective manufacturers.

Compliance Considerations: The ATTINY12L-4SU carries ROHS3 compliance certification, whereas the ATTINY12L-4SC is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the ATTINY12L-4SU is the appropriate selection.

Temperature Range: The ATTINY12L-4SU provides an extended operating temperature range of -40°C to 85°C compared to the ATTINY12L-4SC range of 0°C to 70°C. Applications requiring operation outside the 0°C to 70°C window benefit from this extended specification.

Electrical and Functional Equivalence: All electrical parameters, memory configurations, I/O specifications, and peripheral functionality are identical between the two parts. Pin-for-pin compatibility and software compatibility are maintained.

Frequently Asked Questions (FAQ)

Q: Can the ATTINY12L-4SU replace the ATTINY12L-4SC in existing designs?

A: Yes. The ATTINY12L-4SU is functionally equivalent across all critical parameters: core architecture, memory size and type, clock speed, I/O count, package form factor, and peripheral set. Direct substitution is supported without design modification.

Q: What is the difference between these two part numbers?

A: The primary differences are manufacturer designation (Microchip Technology vs. Atmel), operating temperature range (0°C to 70°C vs. -40°C to 85°C), and RoHS compliance status (non-compliant vs. ROHS3 compliant). Functional and electrical specifications are identical.

Q: Are there any pin compatibility concerns?

A: No. Both parts use the 8-SOIC package with identical pin assignments and electrical characteristics. PCB layouts and socket designs require no modification.

Q: Which part should be selected for new designs?

A: Since both parts are obsolete, neither is recommended for new designs. However, if substitution is necessary for legacy system support, the ATTINY12L-4SU is preferred due to ROHS3 compliance and extended temperature range.

Q: Is the supply voltage range identical?

A: Yes. Both parts operate across the 2.7V to 5.5V supply voltage range with identical electrical behavior.

Q: Are firmware and software compatible between these parts?

A: Yes. Both devices use the AVR instruction set and identical memory architecture. Firmware compiled for the ATTINY12L-4SC executes without modification on the ATTINY12L-4SU.