ATMEGA8L-8AC Equivalent & Substitute Parts

Part Overview

The ATMEGA8L-8AC is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 8KB FLASH program memory, 1KB RAM, and 512 bytes EEPROM. This device integrates 23 I/O pins, internal oscillator, and communication interfaces including I2C, SPI, and UART/USART. The ATMEGA8L-8AC is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

ATMEGA8L-8AC

Microchip TechnologyIn Stock: 2232ATMEGA8L-8AC Datasheet

Current PartRFQ

ATMEGA8L-8AU

Microchip TechnologyIn Stock: 17440ATMEGA8L-8AU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATMEGA8L-8AC is determined by strict equivalence across core functional parameters: processor architecture (AVR), core size (8-Bit), clock speed (8MHz), memory configuration (8KB FLASH, 1KB RAM, 512 bytes EEPROM), I/O count (23 pins), voltage supply range (2.7V ~ 5.5V), peripheral set, and physical package (32-TQFP 7x7).

The ATMEGA8L-8AU qualifies as a direct substitute based on identical electrical specifications and package form factor. Substitution eligibility is contingent upon matching all listed parameters without deviation. Packaging format (Tray vs. other formats) does not affect electrical or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ATMEGA8L-8AU is the qualified substitute for the ATMEGA8L-8AC. Both devices share identical electrical and functional specifications across all core parameters. The ATMEGA8L-8AU offers two material advantages: active product status with ongoing manufacturer support, and ROHS3 compliance versus the non-compliant status of the ATMEGA8L-8AC. The ATMEGA8L-8AU additionally provides an extended operating temperature range (-40°C ~ 85°C) compared to the ATMEGA8L-8AC (0°C ~ 70°C), enabling deployment in broader environmental conditions without functional compromise.

Pin-to-pin compatibility and identical package geometry (32-TQFP 7x7) ensure direct PCB-level substitution without layout modification. Both devices maintain identical supply voltage specifications (2.7V ~ 5.5V) and peripheral configurations.

Frequently Asked Questions (FAQ)

Q: Are the ATMEGA8L-8AC and ATMEGA8L-8AU pin-compatible?

A: Yes. Both devices use the 32-TQFP (7x7) package with identical pin assignments, enabling direct substitution on existing PCB layouts without modification.

Q: What is the difference between ATMEGA8L-8AC and ATMEGA8L-8AU?

A: The devices are electrically and functionally identical. Differences exist in product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), and operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C). The ATMEGA8L-8AU is the recommended choice for new designs and ongoing production.

Q: Can I use ATMEGA8L-8AU in applications originally designed for ATMEGA8L-8AC?

A: Yes. The ATMEGA8L-8AU is a direct functional equivalent with identical memory, I/O, and peripheral specifications. The extended temperature range and improved compliance status make it suitable for all applications previously supported by the ATMEGA8L-8AC.

Q: Does packaging format affect compatibility?

A: No. Packaging format (Tray, Tube, etc.) is a logistics consideration only and does not affect electrical or functional compatibility. The 32-TQFP package geometry remains identical across all variants.

Q: What is the significance of the extended operating temperature range in ATMEGA8L-8AU?

A: The ATMEGA8L-8AU supports -40°C ~ 85°C versus 0°C ~ 70°C for the ATMEGA8L-8AC. This extended range permits deployment in industrial, automotive, and extreme environment applications without functional degradation.