ATSAMA5D42A-CU Equivalent & Substitute Parts

Part Overview

The ATSAMA5D42A-CU is an ARM Cortex-A5 microprocessor from Microchip Technology's SAMA5D4 series, operating at 600MHz with 32-bit architecture. This embedded processor integrates multimedia acceleration, NEON SIMD co-processing, and comprehensive peripheral interfaces including LCD/touchscreen controllers, Ethernet, USB 2.0, and multiple serial communication protocols. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity.

Substiute Parts

ATSAMA5D42A-CU

Microchip TechnologyIn Stock: 2157ATSAMA5D42A-CU Datasheet

Current PartRFQ

ATSAMA5D42B-CU

Microchip TechnologyIn Stock: 4673ATSAMA5D42B-CU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATSAMA5D42A-CU is determined by strict equivalence across the following critical parameters:

• Core processor architecture and instruction set (ARM Cortex-A5)
• Clock frequency (600MHz)
• Bus width (32-Bit, 1 Core)
• Co-processor capabilities (Multimedia, NEON SIMD)
• Memory controller support (LPDDR, LPDDR2, DDR2)
• Peripheral interface set (LCD, Touchscreen, Ethernet, USB 2.0, serial protocols)
• I/O voltage levels (1.2V, 1.8V, 3.3V)
• Operating temperature range (-40°C ~ 85°C)
• Security feature set (AES, SHA, TDES, TRNG)
• Package form factor (361-TFBGA 16x16)
• Compliance certifications (ROHS3, REACH Unaffected)

The ATSAMA5D42B-CU meets all these criteria as a direct substitute within the SAMA5D4 series.

Parameter Comparison

Engineering Selection Recommendations

The ATSAMA5D42B-CU is the direct equivalent substitute for the ATSAMA5D42A-CU. Both parts are identical in electrical specifications, core architecture, peripheral integration, and physical packaging. The primary distinction is product lifecycle status: the ATSAMA5D42A-CU is obsolete, while the ATSAMA5D42B-CU maintains active production status from Microchip Technology.

For new designs and production applications, the ATSAMA5D42B-CU is the appropriate selection. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The identical operating temperature range, I/O voltage specifications, and security feature set ensure functional and thermal compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Are ATSAMA5D42A-CU and ATSAMA5D42B-CU pin-compatible?

A: Yes. Both parts use the 361-TFBGA (16x16) package with identical pinout, voltage levels (1.2V, 1.8V, 3.3V), and peripheral interface assignments.

Q: Can ATSAMA5D42B-CU replace ATSAMA5D42A-CU in existing PCB designs?

A: Yes. The parts are electrically and mechanically equivalent. No PCB redesign is required for substitution.

Q: What is the difference between ATSAMA5D42A-CU and ATSAMA5D42B-CU?

A: The parts are functionally identical. The primary difference is product status: ATSAMA5D42A-CU is obsolete, while ATSAMA5D42B-CU is in active production.

Q: Do both parts support the same memory controllers?

A: Yes. Both support LPDDR, LPDDR2, and DDR2 memory controllers with identical configuration and timing specifications.

Q: Are the security features identical between the two parts?

A: Yes. Both parts include AES, SHA, TDES, and TRNG security features with identical implementation.

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

A: Both parts operate across -40°C to 85°C (TA), suitable for industrial and commercial applications.

Q: Are there packaging differences between the two parts?

A: The ATSAMA5D42A-CU is supplied in standard packaging, while the ATSAMA5D42B-CU is supplied in trays. Both use the 361-TFBGA (16x16) form factor.