ATSAM4SA16CA-ANR Equivalent & Substitute Parts

Part Overview

The ATSAM4SA16CA-ANR is an ARM Cortex-M4 32-bit microcontroller from Microchip Technology's SAM4S series, featuring 1MB of FLASH memory, 160KB of RAM, and 79 I/O pins in a 100-LQFP package. The device operates at 120MHz with integrated connectivity options including USB, UART/USART, SPI, I2C, and memory card interfaces. This microcontroller is actively produced and widely used in embedded systems requiring moderate processing power and extensive peripheral integration. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and component availability across different procurement channels and packaging formats.

Key Parameters

Parameter	Value
Manufacturer Part Number	ATSAM4SA16CA-ANR
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)
RAM Size	160K x 8
Number of I/O	79
Package / Case	100-LQFP (14x14)
Voltage - Supply (Vcc/Vdd)	1.62V ~ 3.6V
Operating Temperature	-40°C ~ 105°C (TA)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the ATSAM4SA16CA-ANR are determined by strict equivalence across the following critical parameters:

Core processor architecture and instruction set (ARM Cortex-M4)
Memory configuration (1MB FLASH, 160KB RAM)
Operating frequency (120MHz)
I/O pin count (79 pins)
Package type and footprint (100-LQFP, 14x14mm)
Supply voltage range (1.62V ~ 3.6V)
Peripheral feature set (USB, UART/USART, SPI, I2C, SSC, IrDA, Memory Card, EBI/EMI)
Data converter specifications (A/D 16x12b, D/A 2x12b)
Compliance certifications (ROHS3, REACH Unaffected)

Substitutes within this grouping differ only in packaging format (Tape & Reel versus standard packaging) and minor operating temperature range variations, which do not affect functional equivalence or pin compatibility.

Parameter Comparison

Parameter	ATSAM4SA16CA-ANR	ATSAM4SA16CA-AUR
Manufacturer Part Number	ATSAM4SA16CA-ANR	ATSAM4SA16CA-AUR
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 Size	1MB (1M x 8)	1MB (1M x 8)
RAM Size	160K x 8	160K x 8
Number of I/O	79	79
Package / Case	100-LQFP (14x14)	100-LQFP (14x14)
Voltage - Supply (Vcc/Vdd)	1.62V ~ 3.6V	1.62V ~ 3.6V
Operating Temperature	-40°C ~ 105°C (TA)	-40°C ~ 85°C (TA)
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
Data Converters	A/D 16x12b; D/A 2x12b	A/D 16x12b; D/A 2x12b
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active
Supplier Device Package	100-LQFP (14x14)	100-LQFP (14x14) Tape & Reel (TR)

Engineering Selection Recommendations

Both the ATSAM4SA16CA-ANR and ATSAM4SA16CA-AUR are active products from Microchip Technology with identical electrical specifications, pin configurations, and functional capabilities. Selection between these parts is determined by procurement and assembly requirements rather than technical performance:

The ATSAM4SA16CA-ANR is supplied in standard packaging format and is suitable for manual assembly, prototyping, and low-volume production environments.

The ATSAM4SA16CA-AUR is supplied in Tape & Reel format and is optimized for automated pick-and-place assembly in high-volume manufacturing operations.

Both parts maintain ROHS3 compliance and REACH unaffected status. The operating temperature range difference (-40°C ~ 105°C for ANR versus -40°C ~ 85°C for AUR) should be evaluated against specific application requirements. For applications requiring the full -40°C ~ 105°C temperature range, the ATSAM4SA16CA-ANR is the appropriate selection. For applications operating within -40°C ~ 85°C, either part is functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Are ATSAM4SA16CA-ANR and ATSAM4SA16CA-AUR pin-compatible?

A: Yes. Both parts use the 100-LQFP (14x14mm) package with identical pin assignments, voltage levels, and signal definitions. Direct substitution on the PCB is possible without layout modifications.

Q: What is the difference between ANR and AUR packaging?

A: ANR is supplied in standard packaging suitable for manual handling and small-quantity orders. AUR is supplied in Tape & Reel format optimized for automated assembly equipment. The electrical and functional specifications are identical.

Q: Can I use ATSAM4SA16CA-AUR in applications requiring -40°C ~ 105°C operation?

A: No. The ATSAM4SA16CA-AUR is rated for -40°C ~ 85°C operation. For applications requiring the full -40°C ~ 105°C temperature range, use ATSAM4SA16CA-ANR.

Q: Are both parts ROHS3 compliant?

A: Yes. Both ATSAM4SA16CA-ANR and ATSAM4SA16CA-AUR are ROHS3 compliant and REACH unaffected.

Q: Do these parts have identical memory configurations?

A: Yes. Both parts feature 1MB FLASH memory, 160KB RAM, and identical peripheral integration including USB, UART/USART, SPI, I2C, and data converter specifications.

Q: Which part should I select for high-volume production?

A: ATSAM4SA16CA-AUR in Tape & Reel format is recommended for high-volume automated assembly. For lower volumes or manual assembly, ATSAM4SA16CA-ANR is appropriate.

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