ATSAM4CMP16CA-AUR Equivalent & Substitute Parts

Part Overview

The ATSAM4CMP16CA-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from Microchip Technology's SAM4CM series, featuring 1MB of FLASH memory, 128KB of RAM, and 52 I/O pins in a 100-LQFP package. The device operates at 120MHz with integrated connectivity options including SPI, UART/USART, I2C, and IrDA, along with peripherals such as DMA, PWM, LCD controller, and watchdog timer.

This part carries an Obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this microcontroller.

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	1MB (1M x 8) FLASH
RAM Size	128K x 8
Number of I/O	52
Package / Case	100-LQFP (14x14)
Voltage Supply (Vcc/Vdd)	1.62V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the ATSAM4CMP16CA-AUR is determined by strict equivalence across the following critical parameters:

Manufacturer and series (Microchip Technology SAM4CM)
Core processor architecture (ARM Cortex-M4/M4F)
Core configuration (32-bit dual-core)
Operating frequency (120MHz)
Memory configuration (1MB FLASH, 128KB RAM)
I/O pin count (52 pins)
Package type and footprint (100-LQFP, 14x14mm)
Voltage supply range (1.62V ~ 3.6V)
Temperature rating (-40°C ~ 85°C)
Connectivity and peripheral feature set

The ATSAM4CMP16CC-AUR qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the original part's standard packaging, and carries an Active product status.

Parameter Comparison

Parameter	ATSAM4CMP16CA-AUR	ATSAM4CMP16CC-AUR
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	1MB (1M x 8) FLASH	1MB (1M x 8) FLASH
RAM Size	128K x 8	128K x 8
Number of I/O	52	52
Package / Case	100-LQFP (14x14)	100-LQFP (14x14)
Voltage Supply	1.62V ~ 3.6V	1.62V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount	Surface Mount
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
Data Converters	A/D 6x10b	A/D 6x10b
Oscillator Type	Internal	Internal
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active
Packaging Format	Standard	Tape & Reel (TR)

Engineering Selection Recommendations

The ATSAM4CMP16CC-AUR is a direct functional and mechanical equivalent to the ATSAM4CMP16CA-AUR. Both devices are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

The primary advantage of selecting the ATSAM4CMP16CC-AUR is its Active product status, ensuring continued manufacturer support, availability, and long-term supply chain stability. The Obsolete status of the original part creates risk for future procurement and technical support.

Both parts are identical in electrical performance, memory configuration, I/O capability, and thermal characteristics. The packaging format difference (Tape & Reel versus standard) is a supply chain consideration that does not affect functional compatibility or PCB-level integration.

Frequently Asked Questions (FAQ)

Q: Are the ATSAM4CMP16CA-AUR and ATSAM4CMP16CC-AUR pin-compatible?

A: Yes. Both devices use the 100-LQFP (14x14mm) package with identical pin assignments, voltage requirements, and I/O configurations. Direct PCB substitution is possible without layout modifications.

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

A: The primary differences are product status and packaging format. The ATSAM4CMP16CA-AUR is Obsolete with standard packaging, while the ATSAM4CMP16CC-AUR is Active with Tape & Reel (TR) packaging. Electrical and functional specifications are identical.

Q: Can I use the ATSAM4CMP16CC-AUR as a drop-in replacement?

A: Yes. The substitute part meets all electrical, thermal, and mechanical requirements of the original design. No firmware, software, or circuit modifications are required.

Q: Why should I transition from the Obsolete part to the Active part?

A: The Active product status ensures manufacturer support, continued availability, and predictable supply chain access. Obsolete parts face increasing scarcity and may become unavailable for future production runs.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity ratings. Regulatory and environmental requirements are equivalent.

Q: Does the Tape & Reel packaging affect functionality?

A: No. Tape & Reel is a supply and handling format used for automated assembly processes. Once removed from the reel and soldered to the PCB, the device functions identically to standard-packaged units.

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