AT91SAM9G25-CFUR Equivalent & Substitute Parts

Part Overview

The AT91SAM9G25-CFUR is an ARM926EJ-S based microprocessor from Microchip Technology's SAM9G series, operating at 400MHz with 32-bit architecture. This embedded processor integrates DDR2, SDRAM, and SRAM controllers, 10/100Mbps Ethernet, USB 2.0 (3 ports), and comprehensive peripheral interfaces including I2C, SPI, UART/USART, and MMC/SD/SDIO support. The device is mounted in a 247-LFBGA (10x10) package and is currently in active production status. Substitute parts are identified when packaging, electrical specifications, and functional capabilities remain equivalent across the SAM9G series.

Substiute Parts

AT91SAM9G25-CFUR

Microchip TechnologyIn Stock: 1132AT91SAM9G25-CFUR Datasheet

Current PartRFQ

AT91SAM9G25-BFU-999

Microchip TechnologyIn Stock: 1021AT91SAM9G25-BFU-999 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AT91SAM9G25-CFUR are identified based on strict equivalence of core electrical and functional parameters. The substitution criteria are:

• Identical core processor architecture (ARM926EJ-S)
• Matching clock speed (400MHz)
• Equivalent bus width (32-Bit, 1 Core)
• Identical RAM controller support (DDR2, SDRAM, SRAM)
• Matching peripheral interfaces (Ethernet, USB, I2C, SPI, UART/USART, MMC/SD/SDIO, SSC, EBI/EMI)
• Equivalent voltage specifications (1.8V, 3.3V I/O)
• Identical operating temperature range (-40°C ~ 85°C)
• Same base product series (AT91SAM9)
• Equivalent compliance certifications (ROHS3, REACH Unaffected)

Packaging variations (LFBGA vs. VFBGA) and supplier device packages are permitted when all electrical and functional parameters remain identical. Tape & Reel (TR) packaging represents a distribution format variation and does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the AT91SAM9G25-CFUR and AT91SAM9G25-BFU-999 are functionally equivalent microprocessors from Microchip Technology's active product line. Selection between these parts is determined by packaging and distribution requirements rather than electrical or functional differences.

The AT91SAM9G25-CFUR is supplied in 247-LFBGA packaging, while the AT91SAM9G25-BFU-999 is supplied in 247-VFBGA packaging with Tape & Reel distribution format. Both devices maintain identical core specifications, peripheral integration, voltage ratings, and operating temperature ranges. Both achieve ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for embedded processor applications.

Selection should be based on PCB layout compatibility with the specific BGA package variant and supply chain availability. No functional re-qualification is required when substituting between these parts, as all electrical parameters, interface specifications, and performance characteristics remain identical.

Frequently Asked Questions (FAQ)

Q: Can AT91SAM9G25-BFU-999 directly replace AT91SAM9G25-CFUR in existing designs?

A: Functional replacement is possible due to identical electrical specifications and peripheral integration. However, the package variant difference (LFBGA vs. VFBGA) requires PCB layout verification. Both packages are 247-pin BGA (10x10) with the same footprint dimensions, but pin assignment and via placement may differ. Consult the respective device datasheets for package-specific layout requirements before PCB redesign.

Q: What is the difference between 247-LFBGA and 247-VFBGA packaging?

A: Both are 247-pin Ball Grid Array packages in 10x10 configuration. The LFBGA (Low-Profile Fine-pitch BGA) and VFBGA (Very Fine-pitch BGA) designations indicate different ball pitch and height specifications. These are packaging variants from Microchip Technology that maintain electrical equivalence but require package-specific PCB design considerations.

Q: Are there any performance differences between these substitute parts?

A: No. Both parts operate at 400MHz with identical ARM926EJ-S core architecture, 32-bit bus width, and integrated peripherals. RAM controller support, Ethernet, USB, and all additional interfaces are functionally identical. Operating temperature range, voltage specifications, and compliance certifications are equivalent.

Q: What does Tape & Reel (TR) packaging mean for the AT91SAM9G25-BFU-999?

A: Tape & Reel is a distribution and handling format for surface-mount components, not a functional specification. It indicates the component is supplied on continuous tape wound on a reel for automated assembly processes. This format does not affect the electrical or functional characteristics of the microprocessor.

Q: Are both parts currently available?

A: Both AT91SAM9G25-CFUR and AT91SAM9G25-BFU-999 are listed as active products from Microchip Technology. Inventory availability varies by distributor and time. Consult current distributor stock levels for procurement planning.

Q: Do these parts require different handling or storage procedures?

A: Both parts share identical Moisture Sensitivity Level (MSL) rating of 3 (168 Hours), indicating equivalent moisture absorption characteristics and storage requirements. Standard ESD precautions and dry storage conditions apply to both variants.