ATMEGA165A-MU Equivalent & Substitute Parts

Part Overview

The ATMEGA165A-MU is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring 16KB of FLASH program memory, 1KB of RAM, and 512 bytes of EEPROM. This Surface Mount device operates at 16MHz with a supply voltage range of 1.8V to 5.5V and is housed in a 64-QFN (9x9) package. The part maintains Active product status and is ROHS3 compliant. Identifying equivalent substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across production cycles.

Substiute Parts

ATMEGA165A-MU

Microchip TechnologyIn Stock: 925ATMEGA165A-MU Datasheet

Current PartRFQ

ATMEGA165PA-MU

Microchip TechnologyIn Stock: 2344ATMEGA165PA-MU Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ATMEGA165A-MU are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on matching the following key parameters:

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Program Memory: 16KB FLASH
• RAM: 1K x 8
• EEPROM: 512 x 8
• Voltage Supply Range: 1.8V ~ 5.5V
• I/O Count: 54
• Data Converters: A/D 8x10b
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Operating Temperature: -40°C ~ 85°C
• Package: 64-QFN (9x9)
• RoHS Compliance: ROHS3

The ATMEGA165PA-MU meets all these criteria and is classified as a parametric equivalent. Both parts share identical functional specifications, electrical characteristics, and physical packaging, making them interchangeable in circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the ATMEGA165A-MU and ATMEGA165PA-MU are Active products from Microchip Technology with identical electrical and mechanical specifications. Selection between these parts should be based on availability and supply chain requirements. Both parts maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent reliability and handling requirements. The ATMEGA165PA-MU currently shows higher inventory availability (2300 Pcs) compared to the ATMEGA165A-MU (843 Pcs), which may influence procurement decisions for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Are ATMEGA165A-MU and ATMEGA165PA-MU pin-compatible?

A: Yes. Both parts use the 64-QFN (9x9) package with identical pinout, electrical characteristics, and functional specifications. They are direct substitutes at the circuit board level.

Q: Can I use ATMEGA165PA-MU as a drop-in replacement for ATMEGA165A-MU?

A: Yes. The parts are electrically and mechanically equivalent. No circuit modifications are required for substitution.

Q: Do both parts have the same operating temperature range?

A: Yes. Both parts operate across -40°C to 85°C (TA), ensuring identical thermal performance in equivalent applications.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 3 (168 Hours).

Q: What is the difference between ATMEGA165A and ATMEGA165PA?

A: The suffix designations indicate different product variants within the same base product line (ATMEGA165). Both variants meet identical parametric specifications for this application.

Q: Can I mix these parts in the same production batch?

A: Yes. Since both parts are parametrically equivalent with identical electrical and mechanical properties, they can be used interchangeably within the same design and production environment.