ATSAM4CMP32CA-AUR Equivalent & Substitute Parts

Part Overview

The ATSAM4CMP32CA-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from Microchip Technology's SAM4CM series, featuring 2MB of FLASH memory, 256KB of RAM, and 52 I/O pins in a 100-LQFP package. The device operates at 120MHz and supports multiple connectivity interfaces including SPI, UART/USART, I2C, and IrDA. This part is currently listed as obsolete, making identification of suitable alternatives necessary for ongoing design support and production continuity.

Substiute Parts

ATSAM4CMP32CA-AUR

Microchip TechnologyIn Stock: 948ATSAM4CMP32CA-AUR Datasheet

Current PartRFQ

ATSAM4CMP32CB-AUR

Microchip TechnologyIn Stock: 1035ATSAM4CMP32CB-AUR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATSAM4CMP32CA-AUR is determined by strict equivalence across the following critical parameters: ARM Cortex-M4/M4F core architecture, 32-bit dual-core configuration, 120MHz operating frequency, 2MB FLASH memory capacity, 256KB RAM capacity, 52 I/O pins, 100-LQFP package form factor, 1.62V to 3.6V supply voltage range, and -40°C to 85°C operating temperature range. All connectivity interfaces (EBI/EMI, I2C, IrDA, SPI, UART/USART) and peripheral features (Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT) must remain identical. Packaging format differences (such as tape and reel versus alternative packaging) do not affect functional substitution when all electrical and mechanical specifications are maintained.

Parameter Comparison

Engineering Selection Recommendations

The ATSAM4CMP32CB-AUR serves as a direct functional equivalent to the ATSAM4CMP32CA-AUR. Both devices maintain identical electrical specifications, memory configurations, I/O counts, and package dimensions. The primary distinction is product lifecycle status: the ATSAM4CMP32CA-AUR is obsolete, while the ATSAM4CMP32CB-AUR maintains active production status. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The ATSAM4CMP32CB-AUR is supplied in tape and reel packaging, which is standard for production environments and does not affect functional compatibility. Selection of the ATSAM4CMP32CB-AUR ensures continued availability and support for new designs and production continuity.

Frequently Asked Questions (FAQ)

Q: Are the ATSAM4CMP32CA-AUR and ATSAM4CMP32CB-AUR pin-compatible?

A: Yes. Both devices use the 100-LQFP (14x14) package with identical pin assignments, voltage specifications, and I/O configurations. Direct PCB-level substitution is possible without layout modifications.

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

A: The primary difference is product status and packaging format. The ATSAM4CMP32CA-AUR is obsolete, while the ATSAM4CMP32CB-AUR is in active production. The ATSAM4CMP32CB-AUR is supplied in tape and reel format, which is standard for manufacturing environments.

Q: Do both parts have the same memory configuration?

A: Yes. Both devices feature 2MB of FLASH memory, 256KB of RAM, and identical data converter specifications (A/D 6x10b).

Q: Are there any differences in operating temperature or voltage ranges?

A: No. Both parts operate across the identical temperature range (-40°C to 85°C) and voltage supply range (1.62V to 3.6V).

Q: Can I use the ATSAM4CMP32CB-AUR as a replacement in existing designs?

A: Yes. The ATSAM4CMP32CB-AUR is functionally equivalent across all electrical and mechanical parameters. No design changes are required for substitution.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the ATSAM4CMP32CA-AUR and ATSAM4CMP32CB-AUR are ROHS3 compliant and REACH unaffected.