AT91SAM9G46-CU Equivalent & Substitute Parts

Part Overview

The AT91SAM9G46-CU is an ARM926EJ-S based microprocessor from Microchip Technology's SAM9G series, designed for embedded applications requiring 32-bit processing at 400MHz. This device integrates comprehensive peripheral support including LCD/touchscreen controllers, 10/100Mbps Ethernet, USB 2.0, and multiple memory interfaces. The AT91SAM9G46-CU is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

AT91SAM9G46-CU

Microchip TechnologyIn Stock: 998AT91SAM9G46-CU Datasheet

Current PartRFQ

AT91SAM9G46B-CU

Microchip TechnologyIn Stock: 3963AT91SAM9G46B-CU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AT91SAM9G46-CU is determined by strict equivalence across the following critical parameters:

• Core Architecture: ARM926EJ-S processor with identical instruction set
• Processing Speed: 400MHz operation
• Bus Width: 32-Bit configuration
• Memory Interface Support: LPDDR, LPSDR, DDR2, SDR, SRAM controllers
• Peripheral Integration: LCD, touchscreen, 10/100Mbps Ethernet, USB 2.0 (3 ports)
• Interface Protocols: AC97, EBI/EMI, I2C, ISI, MMC/SD/SDIO, SPI, SSC, UART/USART
• Electrical Specifications: 1.8V and 3.3V I/O voltage support
• Thermal Range: -40°C to 85°C operating temperature
• Package Footprint: 324-TFBGA (15x15) ball grid array

The AT91SAM9G46B-CU meets all substitution criteria as a direct functional equivalent with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The AT91SAM9G46B-CU is a direct substitute for the AT91SAM9G46-CU. Both devices are ROHS3 compliant and maintain identical electrical, mechanical, and functional specifications. The primary distinction is product lifecycle status: the AT91SAM9G46-CU is obsolete while the AT91SAM9G46B-CU maintains active production status. For new designs and ongoing system support, the AT91SAM9G46B-CU is the appropriate selection. Both parts carry identical REACH unaffected status and MSL rating of 3 (168 Hours), ensuring equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can AT91SAM9G46B-CU replace AT91SAM9G46-CU in existing designs?

A: Yes. The AT91SAM9G46B-CU is functionally and electrically identical to the AT91SAM9G46-CU. All electrical specifications, peripheral interfaces, memory controllers, and package footprints are equivalent. No design modifications are required.

Q: What is the difference between AT91SAM9G46-CU and AT91SAM9G46B-CU?

A: The devices are functionally identical. The primary difference is product status: AT91SAM9G46-CU is obsolete, while AT91SAM9G46B-CU is in active production. The "B" designation indicates a production revision of the same core device.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 324-TFBGA (15x15) package with identical ball grid array footprint, pitch, and mechanical dimensions. PCB layouts require no modification.

Q: Do both parts support the same operating temperature range?

A: Yes. Both the AT91SAM9G46-CU and AT91SAM9G46B-CU operate across -40°C to 85°C (TA), with identical thermal specifications.

Q: Are there any compliance differences?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical MSL rating of 3 (168 Hours). Handling, storage, and environmental requirements are equivalent.

Q: Which part should be selected for new designs?

A: The AT91SAM9G46B-CU should be selected for new designs due to its active production status and guaranteed long-term availability.