ATSAM4CMS16CA-AU Equivalent & Substitute Parts

Part Overview

The ATSAM4CMS16CA-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from Microchip Technology's SAM4CM series, featuring 1MB FLASH memory, 128KB RAM, and 120MHz operation in a 100-LQFP package. The device is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity. The ATSAM4CMS16CC-AU serves as a direct functional equivalent with identical electrical and mechanical specifications but maintains active product status.

Substiute Parts

ATSAM4CMS16CA-AU

Microchip TechnologyIn Stock: 2140ATSAM4CMS16CA-AU Datasheet

Current PartRFQ

ATSAM4CMS16CC-AU

Microchip TechnologyIn Stock: 19734ATSAM4CMS16CC-AU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATSAM4CMS16CA-AU is determined by strict equivalence across the following critical parameters:

• Processor Architecture: ARM Cortex-M4/M4F dual-core configuration
• Memory Configuration: 1MB FLASH and 128KB RAM
• Operating Frequency: 120MHz
• I/O Count: 57 pins
• Package Format: 100-LQFP (14x14) surface mount
• Voltage Range: 1.62V ~ 3.6V
• Temperature Range: -40°C ~ 85°C
• Connectivity Interfaces: EBI/EMI, I2C, IrDA, SPI, UART/USART
• Peripheral Set: Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT

The ATSAM4CMS16CC-AU meets all substitution criteria with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ATSAM4CMS16CC-AU is the appropriate substitute for the ATSAM4CMS16CA-AU based on the following factors:

Product Status: The ATSAM4CMS16CA-AU is classified as obsolete, while the ATSAM4CMS16CC-AU maintains active product status from Microchip Technology. Active status ensures continued availability, technical support, and manufacturing consistency.

Compliance and Certifications: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and MSL rating of 3 (168 Hours), ensuring equivalent environmental and regulatory qualification.

Electrical and Mechanical Equivalence: All specified electrical parameters, memory configuration, I/O count, package format, and operating ranges are identical between the two parts, enabling direct substitution without circuit redesign or board layout modification.

Supply Chain Continuity: The ATSAM4CMS16CC-AU maintains significantly higher inventory availability (19,644 units in stock versus 2,110 units), supporting production requirements and reducing lead time risk.

Frequently Asked Questions (FAQ)

Q: Can the ATSAM4CMS16CC-AU be used as a direct replacement for the ATSAM4CMS16CA-AU?

A: Yes. The ATSAM4CMS16CC-AU is electrically and mechanically identical to the ATSAM4CMS16CA-AU across all specified parameters. No circuit modifications, firmware changes, or board layout adjustments are required for substitution.

Q: What is the difference between the ATSAM4CMS16CA-AU and ATSAM4CMS16CC-AU?

A: The parts are functionally equivalent. The primary difference is product status: the ATSAM4CMS16CA-AU is obsolete, while the ATSAM4CMS16CC-AU is active. Both share identical core processor, memory, speed, I/O configuration, and package specifications.

Q: Are there any compatibility concerns with the 100-LQFP package?

A: No. Both parts use the identical 100-LQFP (14x14) surface mount package. PCB footprints, solder reflow profiles, and assembly processes remain unchanged.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the ATSAM4CMS16CA-AU and ATSAM4CMS16CC-AU are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 3 (168 Hours).

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -40°C to 85°C (TA), supporting equivalent thermal performance in industrial and commercial applications.