ATSAM3N1AA-MU Equivalent & Substitute Parts

Part Overview

The ATSAM3N1AA-MU is an ARM Cortex-M3 SAM3N microcontroller IC featuring 32-bit single-core architecture, 48MHz operation, and 64KB FLASH memory in a 48-QFN (7x7) surface mount package. This device is classified as obsolete, necessitating identification of active equivalent parts for new designs and production continuity. The SAM3N series maintains consistent core functionality across variants, enabling direct substitution where electrical and mechanical parameters align.

Substiute Parts

ATSAM3N1AA-MU

Microchip TechnologyIn Stock: 965ATSAM3N1AA-MU Datasheet

Current PartRFQ

ATSAM3N1AB-MU

AtmelIn Stock: 5191ATSAM3N1AB-MU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATSAM3N1AA-MU is determined by strict equivalence across the following critical parameters:

• Core Architecture: ARM Cortex-M3 processor
• Memory Configuration: 64KB FLASH, 8K x 8 RAM
• Operating Frequency: 48MHz
• Voltage Range: 1.62V ~ 3.6V
• Package Format: 48-QFN (7x7) with exposed pad
• Peripheral Set: I2C, IrDA, SPI, UART/USART, DMA, PWM, WDT, Brown-out Detect/Reset, POR
• I/O Count: 34 pins
• Data Conversion: A/D 8x10b

The ATSAM3N1AB-MU meets all substitution criteria as a direct equivalent within the SAM3N series, maintaining identical electrical specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ATSAM3N1AB-MU is the direct substitute for the ATSAM3N1AA-MU. Selection is based on the following factors:

• Product Status: The ATSAM3N1AA-MU is obsolete, while the ATSAM3N1AB-MU maintains active status, ensuring long-term availability and supply chain continuity.
• Electrical Equivalence: All core electrical parameters, memory configuration, operating frequency, voltage range, and peripheral functionality are identical.
• Mechanical Compatibility: Both devices utilize the 48-QFN (7x7) package with exposed pad, ensuring pin-for-pin compatibility and identical PCB footprint requirements.
• Regulatory Compliance: Both parts share identical ECCN and HTSUS classifications, maintaining consistent export and trade compliance.

Frequently Asked Questions (FAQ)

Q: Can the ATSAM3N1AB-MU be used as a direct replacement for the ATSAM3N1AA-MU?

A: Yes. The ATSAM3N1AB-MU is electrically and mechanically equivalent to the ATSAM3N1AA-MU. All core specifications, memory configuration, operating frequency, voltage range, I/O count, connectivity options, and peripheral features are identical. The 48-QFN (7x7) package ensures pin-for-pin compatibility with no PCB modifications required.

Q: What is the primary reason for substitution?

A: The ATSAM3N1AA-MU is classified as obsolete. The ATSAM3N1AB-MU is an active product within the same SAM3N series, providing equivalent functionality with assured supply availability.

Q: Are there any differences in packaging or handling?

A: Both devices are supplied in 48-QFN (7x7) surface mount packages with exposed pads. The ATSAM3N1AA-MU is supplied in standard packaging, while the ATSAM3N1AB-MU is supplied in bulk packaging. No differences in handling, storage, or soldering requirements exist.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the ATSAM3N1AA-MU and ATSAM3N1AB-MU share identical ECCN (3A991A2) and HTSUS (8542.31.0001) classifications, ensuring consistent compliance with export control and trade regulations.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in core processor architecture (ARM Cortex-M3), memory size (64KB FLASH, 8K x 8 RAM), operating frequency (48MHz), voltage range (1.62V ~ 3.6V), I/O count (34), package format (48-QFN 7x7), and peripheral feature set (I2C, IrDA, SPI, UART/USART, DMA, PWM, WDT, Brown-out Detect/Reset, POR, A/D 8x10b).