ATSAM4SD32CA-ANR Equivalent & Substitute Parts

Part Overview

The ATSAM4SD32CA-ANR is an ARM Cortex-M4 SAM4S microcontroller IC manufactured by Microchip Technology. This 32-bit single-core processor operates at 120MHz with 2MB FLASH memory and 160KB RAM, housed in a 64-LQFP (10x10) surface mount package. The device is Active in product status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and core functionality are maintained while accommodating different packaging or operational requirements.

Key Parameters

Parameter	Value
Core Processor	ARM Cortex-M4
Core Size	32-Bit Single-Core
Speed	120MHz
Program Memory Size	2MB (2M x 8) FLASH
RAM Size	160K x 8
Voltage Supply (Vcc/Vdd)	1.62V ~ 3.6V
Data Converters	A/D 16x12b, D/A 2x12b
Number of I/O	79
Connectivity	EBI/EMI, I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT
Operating Temperature	-40°C ~ 105°C (TA)
Mounting Type	Surface Mount
Package	64-LQFP (10x10)
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the ATSAM4SD32CA-ANR is determined by strict equivalence in the following core electrical and functional parameters:

ARM Cortex-M4 processor architecture
32-bit single-core configuration
120MHz clock speed
2MB FLASH memory capacity
160KB RAM capacity
1.62V ~ 3.6V supply voltage range
Identical connectivity interfaces (EBI/EMI, I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB)
Identical peripheral set (Brown-out Detect/Reset, DMA, POR, PWM, WDT)
79 I/O pins
A/D 16x12b and D/A 2x12b converters
Surface mount technology
ROHS3 compliance
MSL 3 rating

The ATSAM4SD32CA-AUR qualifies as a substitute based on identical electrical specifications and functional capability. The primary difference is the package configuration (100-LQFP vs. 64-LQFP) and maximum operating temperature range.

Parameter Comparison

Parameter	ATSAM4SD32CA-ANR (Main)	ATSAM4SD32CA-AUR (Substitute)
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	2MB (2M x 8) FLASH	2MB (2M x 8) FLASH
RAM	160K x 8	160K x 8
Voltage Supply	1.62V ~ 3.6V	1.62V ~ 3.6V
Data Converters	A/D 16x12b, D/A 2x12b	A/D 16x12b, D/A 2x12b
Number of I/O	79	79
Connectivity	EBI/EMI, I2C, IrDA, Memory Card, SPI, SSC, UART/USART, USB	EBI/EMI, 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
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
Package / Case	64-LQFP (10x10)	100-LQFP (14x14)
Supplier Device Package	64-LQFP (10x10)	100-LQFP (14x14)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active

Engineering Selection Recommendations

Both the ATSAM4SD32CA-ANR and ATSAM4SD32CA-AUR are Active products from Microchip Technology with ROHS3 compliance and identical MSL ratings. Selection between these parts is determined by PCB layout constraints and thermal requirements.

The ATSAM4SD32CA-ANR (64-LQFP, 10x10) is suitable for space-constrained applications and supports operation up to 105°C. The ATSAM4SD32CA-AUR (100-LQFP, 14x14) provides additional I/O pin accessibility through expanded package footprint and operates to a maximum of 85°C. Both devices maintain identical electrical specifications, memory configuration, and peripheral functionality.

Frequently Asked Questions (FAQ)

Q: Can ATSAM4SD32CA-AUR replace ATSAM4SD32CA-ANR in existing designs?

A: Substitution requires PCB redesign due to different package footprints (64-LQFP vs. 100-LQFP). The electrical specifications and functional capability are identical. Thermal operating range differs: the ANR variant supports -40°C to 105°C while the AUR variant supports -40°C to 85°C.

Q: What are the key differences between these two parts?

A: The primary differences are package size (64-LQFP 10x10 versus 100-LQFP 14x14) and maximum operating temperature (105°C versus 85°C). All core processor specifications, memory capacity, connectivity interfaces, and peripheral functions are identical.

Q: Are both parts ROHS3 compliant?

A: Yes, both ATSAM4SD32CA-ANR and ATSAM4SD32CA-AUR are ROHS3 compliant with MSL 3 rating (168 hours).

Q: What connectivity options are available on both parts?

A: Both parts support EBI/EMI, I2C, IrDA, Memory Card, SPI, SSC, UART/USART, and USB interfaces with identical peripheral support including Brown-out Detect/Reset, DMA, POR, PWM, and WDT.

Q: Is firmware compatibility maintained between these parts?

A: Both parts use the ARM Cortex-M4 processor with identical memory configuration (2MB FLASH, 160KB RAM) and peripheral set, ensuring firmware compatibility at the hardware level.

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