ATSAM4C8CA-AU Equivalent & Substitute Parts

Part Overview

The ATSAM4C8CA-AU is a 32-bit dual-core ARM Cortex-M4/M4F microcontroller from Microchip Technology's SAM4C series, featuring 512KB FLASH memory, 128KB RAM, and 120MHz operation in a 100-LQFP package. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

ATSAM4C8CA-AU

Microchip TechnologyIn Stock: 1062ATSAM4C8CA-AU Datasheet

Current PartRFQ

ATSAM4C8CB-AU

Microchip TechnologyIn Stock: 1000297ATSAM4C8CB-AU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATSAM4C8CA-AU is determined by strict equivalence across the following critical parameters:

• Manufacturer & Series: Both parts must be Microchip Technology SAM4C series microcontrollers
• Core Architecture: ARM Cortex-M4/M4F dual-core 32-bit processor
• Clock Speed: 120MHz operation
• Memory Configuration: 512KB FLASH and 128KB RAM
• Package: 100-LQFP (14x14) surface mount
• Electrical Specifications: 1.62V ~ 3.6V supply voltage range
• I/O Count: 74 I/O 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 (168 Hours)

The ATSAM4C8CB-AU meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The ATSAM4C8CB-AU is a direct substitute for the ATSAM4C8CA-AU. Both parts are identical in electrical specifications, memory configuration, I/O count, package format, and environmental compliance ratings. The primary distinction is product status: the ATSAM4C8CA-AU is obsolete while the ATSAM4C8CB-AU is active and maintains full manufacturing support from Microchip Technology.

For new designs, production restocking, or system maintenance requiring component replacement, the ATSAM4C8CB-AU is the appropriate selection. Both parts carry ROHS3 compliance and identical MSL ratings, ensuring compatibility with current manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the ATSAM4C8CB-AU be used as a direct replacement for the ATSAM4C8CA-AU in existing designs?

A: Yes. The ATSAM4C8CB-AU is electrically and mechanically identical to the ATSAM4C8CA-AU across all specified parameters including core architecture, memory, speed, I/O configuration, package format, and operating conditions. No design modifications are required.

Q: What is the difference between the ATSAM4C8CA-AU and ATSAM4C8CB-AU?

A: The parts are functionally equivalent. The ATSAM4C8CA-AU is obsolete, while the ATSAM4C8CB-AU is an active product with ongoing manufacturing support from Microchip Technology.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 100-LQFP (14x14) surface mount package with identical pin configuration, pitch, and mechanical specifications.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant with MSL 3 (168 Hours) moisture sensitivity rating, REACH unaffected status, and identical operating temperature ranges of -40°C to 85°C.

Q: Is there a difference in supply voltage requirements?

A: No. Both parts operate across the identical voltage supply range of 1.62V to 3.6V (Vcc/Vdd).

Q: Can I use the ATSAM4C8CB-AU in legacy systems designed for the ATSAM4C8CA-AU?

A: Yes. The ATSAM4C8CB-AU provides complete functional equivalence and can be used in any application originally designed for the ATSAM4C8CA-AU without circuit modifications or firmware changes.