AT91SAM9M11-CU Equivalent & Substitute Parts

Part Overview

The AT91SAM9M11-CU is an ARM926EJ-S based microprocessor from Microchip Technology's SAM9M series, designed for embedded applications requiring 32-bit processing at 400MHz. This device integrates memory controllers, display interfaces, networking, and security features in a 324-TFBGA package. The AT91SAM9M11-CU is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

AT91SAM9M11-CU

Microchip TechnologyIn Stock: 921AT91SAM9M11-CU Datasheet

Current PartRFQ

AT91SAM9M11B-CU

Microchip TechnologyIn Stock: 1253AT91SAM9M11B-CU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT91SAM9M11-CU is determined by strict alignment across the following critical parameters:

• Core processor architecture and instruction set (ARM926EJ-S)
• Processing speed (400MHz)
• Physical package specification (324-TFBGA, 15x15mm)
• I/O voltage compatibility (1.8V, 3.3V)
• Operating temperature range (-40°C ~ 85°C)
• Integrated peripheral set (memory controllers, display interfaces, networking, security)
• Compliance certifications (ROHS3, MSL rating)

The AT91SAM9M11B-CU meets all substitution criteria, maintaining identical electrical specifications, package geometry, and functional integration while offering active product status.

Parameter Comparison

Engineering Selection Recommendations

The AT91SAM9M11B-CU is the direct substitute for AT91SAM9M11-CU applications. Both devices are ROHS3 compliant with identical MSL ratings, ensuring equivalent environmental and regulatory compliance. The primary distinction is product status: AT91SAM9M11B-CU maintains active manufacturing status, providing supply continuity and long-term availability for new designs and production support. For systems currently using AT91SAM9M11-CU, transition to AT91SAM9M11B-CU is supported by complete electrical and mechanical compatibility, requiring no design modifications.

Frequently Asked Questions (FAQ)

Q: Can AT91SAM9M11B-CU replace AT91SAM9M11-CU in existing designs?

A: Yes. Both devices share identical core processor architecture, clock speed, package geometry, I/O voltage specifications, and peripheral integration. No PCB layout or firmware modifications are required.

Q: Are there differences in package handling or storage?

A: Both devices carry MSL 3 rating with 168-hour floor life. Moisture sensitivity handling procedures remain unchanged between the two parts.

Q: What is the primary reason to transition from AT91SAM9M11-CU to AT91SAM9M11B-CU?

A: AT91SAM9M11-CU is classified as obsolete, while AT91SAM9M11B-CU maintains active product status. This ensures continued manufacturing availability and supply chain stability for production and support applications.

Q: Are compliance certifications equivalent?

A: Yes. Both parts are ROHS3 compliant and carry identical regulatory classifications, including REACH unaffected status and equivalent ECCN/HTSUS coding.

Q: Does the 324-TFBGA package remain the same?

A: Yes. Both devices use the identical 324-TFBGA (15x15mm) package specification, ensuring footprint and pinout compatibility.