ATSAM4CMS4CB-AUR Equivalent & Substitute Parts

Part Overview

The ATSAM4CMS4CB-AUR is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from Microchip Technology's SAM4CM series, featuring 256KB FLASH memory, 128KB RAM, and operation at 120MHz. This device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

ATSAM4CMS4CB-AUR

Microchip TechnologyIn Stock: 753ATSAM4CMS4CB-AUR Datasheet

Current PartRFQ

ATSAM4CMS4CC-AUR

Microchip TechnologyIn Stock: 867ATSAM4CMS4CC-AUR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ATSAM4CMS4CB-AUR is determined by strict equivalence across the following critical parameters:

• Processor Architecture: ARM Cortex-M4/M4F dual-core configuration
• Memory Configuration: 256KB FLASH and 128KB RAM
• Operating Frequency: 120MHz
• Supply Voltage Range: 1.62V ~ 3.6V
• Package Type: 100-LQFP (14x14) surface mount
• I/O Count: 57 pins
• Connectivity & Peripherals: EBI/EMI, I2C, IrDA, SPI, UART/USART, Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
• Environmental Compliance: ROHS3 Compliant, MSL 3

The ATSAM4CMS4CC-AUR meets all these criteria and is therefore a direct functional equivalent. The primary distinction is packaging format: the substitute is supplied in Tape & Reel (TR) configuration versus the main part's standard packaging, and the substitute maintains active product status.

Parameter Comparison

Engineering Selection Recommendations

The ATSAM4CMS4CC-AUR is a direct functional substitute for the ATSAM4CMS4CB-AUR. Both devices are ROHS3 compliant and share identical electrical specifications, memory configuration, and peripheral functionality. The substitute maintains active product status, ensuring long-term availability and manufacturing support.

The primary consideration for selection is packaging format. The ATSAM4CMS4CC-AUR is supplied in Tape & Reel (TR) configuration, which is standard for high-volume production environments. If standard packaging is required for low-volume or prototype applications, packaging format compatibility with assembly processes must be confirmed.

Both parts are suitable for applications requiring dual-core ARM Cortex-M4/M4F processing at 120MHz with 256KB FLASH and 128KB RAM in a 100-LQFP footprint.

Frequently Asked Questions (FAQ)

Q: Are the ATSAM4CMS4CB-AUR and ATSAM4CMS4CC-AUR pin-compatible?

A: Yes. Both devices use the 100-LQFP (14x14) package with 57 I/O pins. Pin assignments, electrical characteristics, and functional behavior are identical.

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

A: The primary difference is packaging format. The ATSAM4CMS4CB-AUR uses standard packaging, while the ATSAM4CMS4CC-AUR is supplied in Tape & Reel (TR) format. Electrical and functional specifications are identical.

Q: Can I use the ATSAM4CMS4CC-AUR as a direct replacement in existing designs?

A: Yes, provided your assembly process supports Tape & Reel packaging. The device is electrically and functionally equivalent with identical pin configuration, memory, and peripheral set.

Q: Why is the ATSAM4CMS4CB-AUR marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. The ATSAM4CMS4CC-AUR, with active product status, is the recommended alternative for new designs and ongoing production.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the ATSAM4CMS4CB-AUR and ATSAM4CMS4CC-AUR are ROHS3 compliant with MSL 3 (168 Hours) moisture sensitivity rating.

Q: What is the supply voltage range for these microcontrollers?

A: Both devices operate across 1.62V to 3.6V supply voltage range, supporting single-cell lithium battery applications and standard 3.3V logic systems.