ATSAM4SD32BA-AN Equivalent & Substitute Parts

Part Overview

The ATSAM4SD32BA-AN is an ARM Cortex-M4 based 32-bit microcontroller from Microchip Technology's SAM4S series. This device integrates 2MB of FLASH memory, 160KB of RAM, and operates at 120MHz with a supply voltage range of 1.62V to 3.6V. The part is housed in a 64-LQFP (10x10) surface mount package and is currently in active production status. Finding equivalent or substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging options are required, or when inventory constraints necessitate sourcing from alternative stock locations.

Substiute Parts

ATSAM4SD32BA-AN

Microchip TechnologyIn Stock: 1129ATSAM4SD32BA-AN Datasheet

Current PartRFQ

ATSAM4SD32BA-AU

Microchip TechnologyIn Stock: 2634ATSAM4SD32BA-AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATSAM4SD32BA-AN is determined by strict equivalence across the following critical parameters:

• Base product number (ATSAM4SD)
• Core processor architecture (ARM Cortex-M4)
• Memory configuration (2MB FLASH, 160KB RAM)
• Operating frequency (120MHz)
• Package type (64-LQFP 10x10)
• Supply voltage range (1.62V ~ 3.6V)
• I/O count (47 pins)
• Connectivity and peripheral set (I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB, DMA, PWM, WDT, Brown-out Detect/Reset, POR)

The ATSAM4SD32BA-AU qualifies as a direct substitute based on identical core specifications and package configuration. The primary difference is the packaging format (Tray versus standard packaging) and a narrower operating temperature range (-40°C ~ 85°C versus -40°C ~ 105°C).

Parameter Comparison

Engineering Selection Recommendations

Both the ATSAM4SD32BA-AN and ATSAM4SD32BA-AU are active production parts from Microchip Technology with ROHS3 compliance and identical functional specifications. Selection between these parts should be based on the following criteria:

ATSAM4SD32BA-AN is the primary choice when the application requires operation across the full temperature range of -40°C to 105°C, or when standard packaging is required for inventory management and supply chain consistency.

ATSAM4SD32BA-AU is suitable as a substitute when the application operates within the narrower temperature range of -40°C to 85°C and when Tray packaging format is acceptable for the manufacturing or assembly process. This part number offers equivalent electrical and functional performance within its specified operating conditions.

Both parts share identical core architecture, memory configuration, I/O count, connectivity options, and peripheral functionality, making them functionally interchangeable within their respective temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can ATSAM4SD32BA-AU be used as a direct replacement for ATSAM4SD32BA-AN?

A: Yes, provided the application operates within the -40°C to 85°C temperature range. All electrical specifications, memory configuration, I/O count, and peripheral functionality are identical. The primary differences are packaging format (Tray) and operating temperature range.

Q: What is the significance of the packaging format difference between -AN and -AU variants?

A: The -AN variant uses standard packaging while the -AU variant uses Tray packaging. This affects handling, storage, and assembly processes but does not impact electrical performance or functionality. Selection depends on manufacturing and supply chain requirements.

Q: Are there any compatibility concerns when substituting between these part numbers?

A: No compatibility concerns exist for applications operating within the specified temperature range of the substitute part. Both devices use identical 64-LQFP (10x10) packages with 47 I/O pins and are pin-for-pin compatible.

Q: What certifications and compliance standards apply to both parts?

A: Both ATSAM4SD32BA-AN and ATSAM4SD32BA-AU are ROHS3 compliant and REACH unaffected. Both are active production parts from Microchip Technology with identical regulatory status.

Q: How do I determine which part is appropriate for my application?

A: Evaluate your application's operating temperature requirements. If operation above 85°C is necessary, use ATSAM4SD32BA-AN. If operation is limited to -40°C to 85°C, either part is suitable. Verify packaging requirements with your manufacturing or assembly process.