AT91SAM9G45-CU Equivalent & Substitute Parts

Part Overview

The AT91SAM9G45-CU is an ARM926EJ-S microprocessor from Microchip Technology's SAM9G series, featuring a single 32-bit core operating at 400MHz with integrated memory controllers, display interfaces, and communication peripherals. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The AT91SAM9G45B-CU serves as the direct successor, maintaining full electrical and mechanical compatibility while offering active product status.

Substiute Parts

AT91SAM9G45-CU

Microchip TechnologyIn Stock: 1966AT91SAM9G45-CU Datasheet

Current PartRFQ

AT91SAM9G45B-CU

Microchip TechnologyIn Stock: 2417AT91SAM9G45B-CU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT91SAM9G45-CU is determined by strict equivalence across the following critical parameters:

• Core processor architecture and instruction set (ARM926EJ-S)
• Clock frequency (400MHz)
• Physical package and pin configuration (324-TFBGA 15x15)
• I/O voltage levels (1.8V, 3.3V)
• Operating temperature range (-40°C ~ 85°C)
• Integrated peripheral set (memory controllers, display interfaces, communication protocols)
• Compliance certifications (ROHS3, REACH Unaffected)

The AT91SAM9G45B-CU meets all substitution criteria, providing identical electrical and mechanical specifications while offering improved product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

The AT91SAM9G45B-CU is the direct equivalent for the obsolete AT91SAM9G45-CU. Both parts maintain identical electrical specifications, pin configurations, and peripheral functionality. The primary distinction is product lifecycle status: AT91SAM9G45-CU is obsolete while AT91SAM9G45B-CU is active, ensuring continued availability and manufacturing support.

For new designs or system replacements, AT91SAM9G45B-CU is the appropriate selection. Both parts satisfy ROHS3 compliance and REACH regulatory requirements, with matching moisture sensitivity classifications suitable for standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can AT91SAM9G45B-CU replace AT91SAM9G45-CU in existing designs?

A: Yes. The parts are electrically and mechanically identical across all specified parameters. Pin-for-pin compatibility is maintained, and no circuit modifications are required.

Q: What is the significance of the product status difference?

A: AT91SAM9G45-CU is obsolete, indicating discontinued manufacturing and limited availability. AT91SAM9G45B-CU is active, ensuring reliable supply chains and ongoing technical support from Microchip Technology.

Q: Are the package dimensions identical?

A: Yes. Both parts use 324-TFBGA (15x15) packaging with identical footprints and pin assignments.

Q: Do both parts support the same peripheral interfaces?

A: Yes. Both include identical support for LCD, touchscreen, Ethernet, USB 2.0, memory controllers, and serial communication protocols (UART/USART, SPI, I2C, SSC, MMC/SD/SDIO).

Q: Are there any voltage or temperature rating differences?

A: No. Both parts operate at 1.8V and 3.3V I/O levels with identical -40°C to 85°C operating temperature ranges.

Q: What compliance certifications apply to both parts?

A: Both are ROHS3 compliant and REACH unaffected, with matching MSL 3 moisture sensitivity ratings.