ATSAM4E8CA-AUR Equivalent & Substitute Parts

Part Overview

The ATSAM4E8CA-AUR is an ARM Cortex-M4 SAM4E microcontroller IC manufactured by Microchip Technology. This 32-bit single-core processor operates at 120MHz with 512KB FLASH memory and 128KB RAM, housed in a 100-LQFP package. The device integrates multiple connectivity interfaces including CANbus, Ethernet, IrDA, MMC/SD, SPI, UART/USART, and USB, making it suitable for embedded applications requiring advanced peripheral integration. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when electrical specifications, memory configurations, core architecture, and package form factors remain identical or functionally equivalent within specified operating parameters.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Core Processor	ARM Cortex-M4
Core Size	32-Bit Single-Core
Speed	120MHz
Program Memory Size	512KB (512K x 8) FLASH
RAM Size	128K x 8
Package / Case	100-LQFP (14x14)
Voltage Supply (Vcc/Vdd)	1.62V ~ 3.6V
Data Converters	A/D 16x12b; D/A 2x12b
Number of I/O	79
Connectivity	CANbus, Ethernet, IrDA, MMC/SD, SPI, UART/USART, USB
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the ATSAM4E8CA-AUR are identified based on strict equivalence across the following critical parameters:

Identical core processor architecture (ARM Cortex-M4)
Matching clock speed (120MHz)
Equivalent memory configuration (512KB FLASH, 128KB RAM)
Identical package form factor (100-LQFP 14x14)
Matching supply voltage range (1.62V ~ 3.6V)
Identical data converter specifications (A/D 16x12b; D/A 2x12b)
Equivalent I/O count (79 pins)
Identical connectivity and peripheral feature sets
Same series designation (SAM4E)
Equivalent compliance certifications (ROHS3)

The ATSAM4E8CB-ANR qualifies as a direct substitute based on these parameters. Differences in packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and operating temperature range do not affect functional equivalence for component selection purposes.

Parameter Comparison

Parameter	ATSAM4E8CA-AUR	ATSAM4E8CB-ANR
Manufacturer	Microchip Technology	Microchip Technology
Series	SAM4E	SAM4E
Core Processor	ARM Cortex-M4	ARM Cortex-M4
Core Size	32-Bit Single-Core	32-Bit Single-Core
Speed	120MHz	120MHz
Program Memory Size	512KB (512K x 8) FLASH	512KB (512K x 8) FLASH
RAM Size	128K x 8	128K x 8
Package / Case	100-LQFP (14x14)	100-LQFP (14x14)
Voltage Supply (Vcc/Vdd)	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	CANbus, Ethernet, IrDA, MMC/SD, SPI, UART/USART, USB	CANbus, Ethernet, IrDA, MMC/SD, SPI, UART/USART, USB
Peripherals	Brown-out Detect/Reset, DMA, POR, PWM, WDT	Brown-out Detect/Reset, DMA, POR, PWM, WDT
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 105°C (TA)
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel

Engineering Selection Recommendations

Both the ATSAM4E8CA-AUR and ATSAM4E8CB-ANR maintain Active product status from Microchip Technology and carry identical ROHS3 compliance certification. The parts are electrically and functionally equivalent across all core specifications including processor architecture, memory configuration, clock speed, supply voltage, and peripheral integration.

The ATSAM4E8CB-ANR offers an extended operating temperature range (-40°C to 105°C versus -40°C to 85°C), which may provide additional thermal margin in applications operating at elevated ambient temperatures. Packaging format differences (Cut Tape & Digi-Reel versus Tape & Reel) reflect distribution and handling preferences and do not affect component functionality or PCB integration.

Selection between these parts should be based on supply chain availability, packaging requirements for assembly processes, and thermal operating envelope specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Are ATSAM4E8CA-AUR and ATSAM4E8CB-ANR pin-compatible?

A: Yes. Both parts use the 100-LQFP (14x14) package with identical pin assignments, I/O count (79), and electrical characteristics. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel represent different distribution and handling formats. Tape & Reel is continuous reel packaging for automated pick-and-place assembly. Cut Tape & Digi-Reel is pre-cut tape format. Both formats contain identical components; the difference is in supply chain logistics and assembly line compatibility.

Q: Can ATSAM4E8CB-ANR replace ATSAM4E8CA-AUR in applications operating at 85°C?

A: Yes. The ATSAM4E8CB-ANR operating range (-40°C to 105°C) encompasses the ATSAM4E8CA-AUR range (-40°C to 85°C). The substitute part is suitable for all thermal conditions specified for the original part.

Q: Are the memory specifications identical between these parts?

A: Yes. Both parts contain 512KB FLASH memory and 128KB RAM with identical organization (512K x 8 and 128K x 8 respectively). Program code and data storage capacity are equivalent.

Q: Do both parts support the same connectivity interfaces?

A: Yes. Both ATSAM4E8CA-AUR and ATSAM4E8CB-ANR integrate identical connectivity: CANbus, Ethernet, IrDA, MMC/SD, SPI, UART/USART, and USB. Peripheral feature sets including DMA, PWM, WDT, and brown-out detection are equivalent.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Identical ECCN and HTSUS classifications apply for export and regulatory purposes.

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