ATSAM4CMP8CA-AU Equivalent & Substitute Parts

Part Overview

The ATSAM4CMP8CA-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from Microchip Technology's SAM4CM series, featuring 512KB FLASH memory, 128KB RAM, and 120MHz operation. This device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The primary substitute maintains identical electrical and mechanical specifications while offering improved availability and active product status.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Series	SAM4CM
Core Processor	ARM Cortex-M4/M4F
Core Size	32-Bit Dual-Core
Speed	120MHz
Program Memory Size	512KB (512K x 8) FLASH
RAM Size	128K x 8
Voltage Supply (Vcc/Vdd)	1.62V ~ 3.6V
Number of I/O	52
Data Converters	A/D 6x10b
Connectivity	EBI/EMI, I2C, IrDA, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	100-LQFP (14x14)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

The ATSAM4CMP8CC-AU qualifies as a direct substitute for the ATSAM4CMP8CA-AU based on strict parameter equivalence across all critical electrical and mechanical specifications. Both devices share identical core architecture, memory configuration, I/O count, connectivity interfaces, and peripheral set. The substitution is valid because the following key parameters match exactly:

ARM Cortex-M4/M4F dual-core processor architecture
120MHz clock speed
512KB FLASH program memory
128KB RAM
52 I/O pins
100-LQFP surface mount package (14x14mm)
1.62V ~ 3.6V supply voltage range
-40°C ~ 85°C operating temperature range
Identical connectivity (EBI/EMI, I2C, IrDA, SPI, UART/USART)
Identical peripheral set (Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT)
ROHS3 compliance and MSL 3 rating

The primary distinction is product status: ATSAM4CMP8CA-AU is obsolete, while ATSAM4CMP8CC-AU maintains active status with significantly higher inventory availability.

Parameter Comparison

Parameter	ATSAM4CMP8CA-AU (Main)	ATSAM4CMP8CC-AU (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Series	SAM4CM	SAM4CM
Core Processor	ARM Cortex-M4/M4F	ARM Cortex-M4/M4F
Core Size	32-Bit Dual-Core	32-Bit Dual-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
Voltage Supply (Vcc/Vdd)	1.62V ~ 3.6V	1.62V ~ 3.6V
Number of I/O	52	52
Data Converters	A/D 6x10b	A/D 6x10b
Connectivity	EBI/EMI, I2C, IrDA, SPI, UART/USART	EBI/EMI, I2C, IrDA, SPI, UART/USART
Peripherals	Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT	Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	100-LQFP (14x14)	100-LQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
Inventory Availability	3,671 Pcs	40,200 Pcs

Engineering Selection Recommendations

The ATSAM4CMP8CC-AU is the appropriate selection for new designs and ongoing system support. Both devices maintain ROHS3 compliance and identical MSL 3 ratings, ensuring equivalent environmental and regulatory standing. The substitute part's active product status provides assurance of continued manufacturing support and supply chain stability, contrasting with the obsolete classification of the original part. Inventory levels for the substitute exceed the main part by a factor of 11, supporting both immediate procurement and long-term availability requirements. No electrical or mechanical redesign is required for substitution, as all functional parameters remain identical.

Frequently Asked Questions (FAQ)

Q: Are the ATSAM4CMP8CA-AU and ATSAM4CMP8CC-AU pin-compatible?

A: Yes. Both devices use the 100-LQFP (14x14mm) package with identical pin assignments, I/O count (52), and electrical characteristics. No PCB layout modifications are required.

Q: Can the ATSAM4CMP8CC-AU replace the ATSAM4CMP8CA-AU in existing applications?

A: Yes. All electrical specifications, memory configuration, clock speed, voltage supply range, operating temperature range, and peripheral functionality are identical. Direct substitution is valid without firmware or hardware changes.

Q: What is the difference between these two part numbers?

A: The primary difference is product lifecycle status. ATSAM4CMP8CA-AU is obsolete, while ATSAM4CMP8CC-AU is active. Both are SAM4CM series microcontrollers with identical specifications. The substitute offers improved availability and ongoing manufacturing support.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance, identical MSL 3 ratings (168 hours), and equivalent regulatory standing. No compliance-related restrictions apply to substitution.

Q: What is the packaging difference?

A: The main part is supplied in standard packaging, while the substitute is supplied in Tray packaging. Both maintain identical MSL 3 moisture sensitivity levels and handling requirements.

Q: Can I use the ATSAM4CMP8CC-AU in designs originally specified for the ATSAM4CMP8CA-AU?

A: Yes. No design changes are required. The substitute maintains full electrical and mechanical compatibility with identical core processor, memory, I/O, connectivity, and peripheral specifications.

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