ATSAM4SA16BA-AN Equivalent & Substitute Parts

Part Overview

The ATSAM4SA16BA-AN is an ARM Cortex-M4 32-bit microcontroller from Microchip Technology's SAM4S series, featuring 1MB of FLASH memory, 160KB of RAM, and 47 I/O pins in a 64-LQFP package. The device operates at 120MHz with integrated connectivity options including I2C, SPI, UART/USART, and USB, along with peripheral functions such as DMA, PWM, and watchdog timer. This microcontroller is classified as Active product status and is ROHS3 compliant. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate packaging or operational temperature requirements across different application scenarios.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Series	SAM4S
Core Processor	ARM Cortex-M4
Core Size	32-Bit Single-Core
Speed	120MHz
Program Memory Size	1MB (1M x 8) FLASH
RAM Size	160K x 8
Number of I/O	47
Voltage Supply Range	1.62V ~ 3.6V
Package Type	64-LQFP (10x10)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ATSAM4SA16BA-AN is determined by strict alignment of the following core parameters:

Manufacturer and Series: Both the main part and substitute must be from Microchip Technology's SAM4S series to ensure firmware compatibility and pin-level equivalence.
Core Architecture: ARM Cortex-M4 32-bit single-core processor at 120MHz is mandatory for functional equivalence.
Memory Configuration: 1MB FLASH and 160KB RAM specifications must be identical.
I/O Count: 47 I/O pins are required for circuit compatibility.
Package: 64-LQFP (10x10) surface mount package ensures PCB layout compatibility.
Voltage Supply: 1.62V ~ 3.6V operating range must be supported.
Connectivity and Peripherals: I2C, SPI, UART/USART, USB, DMA, PWM, and WDT must all be present.

Variations in packaging format (such as Tray versus other packaging types) and operating temperature range do not disqualify substitution when all electrical and functional parameters remain identical. Product status must be Active to ensure ongoing manufacturer support and availability.

Parameter Comparison

Parameter	ATSAM4SA16BA-AN	ATSAM4SA16BA-AU
Manufacturer	Microchip Technology	Microchip Technology
Series	SAM4S	SAM4S
Core Processor	ARM Cortex-M4	ARM Cortex-M4
Core Size	32-Bit Single-Core	32-Bit Single-Core
Speed	120MHz	120MHz
Program Memory	1MB (1M x 8) FLASH	1MB (1M x 8) FLASH
RAM Size	160K x 8	160K x 8
Number of I/O	47	47
Voltage Supply Range	1.62V ~ 3.6V	1.62V ~ 3.6V
Connectivity	I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB	I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT	Brown-out Detect/Reset, DMA, POR, PWM, WDT
Data Converters	A/D 11x12b; D/A 2x12b	A/D 11x12b; D/A 2x12b
Package Type	64-LQFP (10x10)	64-LQFP (10x10)
Mounting Type	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 85°C (TA)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active

Engineering Selection Recommendations

The ATSAM4SA16BA-AU qualifies as a direct substitute for the ATSAM4SA16BA-AN based on identical core electrical specifications, memory configuration, I/O count, and peripheral feature set. Both devices maintain Active product status from Microchip Technology and carry ROHS3 compliance certification.

The primary distinction between these parts is the operating temperature range. The ATSAM4SA16BA-AN supports -40°C to 105°C, while the ATSAM4SA16BA-AU supports -40°C to 85°C. Selection between these variants should be based on the specific thermal requirements of the target application. Applications requiring operation above 85°C must use the ATSAM4SA16BA-AN. Applications operating within the -40°C to 85°C range may use either variant without functional impact.

Both parts are supplied in 64-LQFP (10x10) surface mount packages and are suitable for identical PCB layouts. Packaging format differences (Tray for ATSAM4SA16BA-AU) do not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can ATSAM4SA16BA-AU be used as a direct replacement for ATSAM4SA16BA-AN in all applications?

A: The ATSAM4SA16BA-AU is functionally equivalent to the ATSAM4SA16BA-AN for all electrical and peripheral specifications. The only difference is the maximum operating temperature. If your application operates within -40°C to 85°C, substitution is valid. If your application requires operation above 85°C, the ATSAM4SA16BA-AN must be used.

Q: Are the pin configurations identical between these two parts?

A: Yes. Both the ATSAM4SA16BA-AN and ATSAM4SA16BA-AU feature 47 I/O pins in a 64-LQFP (10x10) package with identical pinout. PCB layouts are fully compatible.

Q: What is the significance of the packaging format difference?

A: The ATSAM4SA16BA-AN uses standard packaging, while the ATSAM4SA16BA-AU is supplied in Tray packaging. This difference affects only the physical delivery and handling method. Electrical and mechanical specifications remain identical.

Q: Are firmware and software compatible between these parts?

A: Yes. Both parts are from the SAM4S series with identical ARM Cortex-M4 architecture, clock speed, memory configuration, and peripheral set. Firmware compiled for one part will execute identically on the other, subject to operating temperature constraints.

Q: What compliance certifications apply to both parts?

A: Both the ATSAM4SA16BA-AN and ATSAM4SA16BA-AU are ROHS3 compliant and REACH unaffected. Both carry MSL rating 3 (168 Hours) for moisture sensitivity.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message