ATSAM4CMP8CB-AU Equivalent & Substitute Parts

Part Overview

The ATSAM4CMP8CB-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 design support and production continuity. The primary substitute maintains identical core functionality 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)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

The ATSAM4CMP8CC-AU qualifies as a direct substitute for the ATSAM4CMP8CB-AU based on the following substitution criteria:

Identical Core Parameters:

Same manufacturer (Microchip Technology)
Same series (SAM4CM)
Identical processor architecture (ARM Cortex-M4/M4F dual-core)
Identical core size (32-bit)
Identical operating frequency (120MHz)
Identical program memory (512KB FLASH)
Identical RAM capacity (128KB)
Identical supply voltage range (1.62V ~ 3.6V)
Identical I/O count (52 pins)
Identical data converter specification (A/D 6x10b)
Identical connectivity interfaces (EBI/EMI, I2C, IrDA, SPI, UART/USART)
Identical peripheral set (Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT)
Identical operating temperature range (-40°C ~ 85°C)
Identical package (100-LQFP 14x14)
Identical mounting type (Surface Mount)
Identical compliance certifications (ROHS3, REACH Unaffected)
Identical moisture sensitivity level (MSL 3, 168 Hours)

Parameter Comparison

Parameter	ATSAM4CMP8CB-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	512KB FLASH	512KB FLASH
RAM	128K x 8	128K x 8
Voltage Supply	1.62V ~ 3.6V	1.62V ~ 3.6V
I/O Count	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	-40°C ~ 85°C
Package	100-LQFP (14x14)	100-LQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active
Inventory Availability	953 Pcs	40200 Pcs

Engineering Selection Recommendations

The ATSAM4CMP8CC-AU is a direct functional and pin-compatible replacement for the ATSAM4CMP8CB-AU. Selection of the substitute part is justified on the following grounds:

Product Status: The main part is classified as obsolete, while the substitute maintains active product status with Microchip Technology, ensuring long-term availability and continued manufacturer support.

Compliance Certifications: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production runs.

Electrical and Mechanical Compatibility: All specified electrical parameters, memory configurations, peripheral sets, and package specifications are identical, enabling direct substitution without circuit redesign or PCB layout modification.

Availability: The substitute part demonstrates significantly higher inventory availability (40200 units versus 953 units), supporting production continuity and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the ATSAM4CMP8CC-AU be used as a direct replacement for the ATSAM4CMP8CB-AU?

A: Yes. Both parts are identical in all specified electrical parameters, memory configuration, peripheral functionality, I/O count, operating voltage range, temperature rating, and 100-LQFP package specification. No circuit modifications or PCB redesign is required.

Q: Are there any differences in pin configuration between these parts?

A: No. Both parts use the identical 100-LQFP (14x14) package with 52 I/O pins. Pin assignments, signal names, and functional groupings are identical.

Q: What is the primary reason to transition from the ATSAM4CMP8CB-AU to the ATSAM4CMP8CC-AU?

A: The ATSAM4CMP8CB-AU is classified as obsolete, while the ATSAM4CMP8CC-AU maintains active product status. This transition ensures continued manufacturer support, long-term availability, and supply chain reliability for ongoing production.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for environmental and hazardous substance restrictions.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both parts carry MSL 3 (168 Hours) classification, requiring identical handling, storage, and reflow procedures during assembly.

Q: What is the difference in available inventory between these parts?

A: The ATSAM4CMP8CB-AU has 953 units in stock, while the ATSAM4CMP8CC-AU has 40200 units available. The substitute part offers substantially higher inventory availability for production planning.

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