AT91SAM7X512B-AU Equivalent & Substitute Parts

Part Overview

The AT91SAM7X512B-AU is an ARM7® SAM7X series microcontroller IC featuring 16/32-bit architecture, 55MHz operation, and 512KB FLASH memory in a 100-LQFP package. This device is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SAM7X series provides integrated connectivity options including CANbus, Ethernet, I2C, SPI, SSC, UART/USART, and USB interfaces, along with comprehensive peripheral support for embedded system applications.

Substiute Parts

AT91SAM7X512B-AU

Microchip TechnologyIn Stock: 1229AT91SAM7X512B-AU Datasheet

Current PartRFQ

AT91SAM7XC512B-AU

Microchip TechnologyIn Stock: 4098AT91SAM7XC512B-AU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT91SAM7XC512B-AU qualifies as a direct substitute for the AT91SAM7X512B-AU based on the following critical parameters:

Matching Parameters:

• Core Processor: ARM7®
• Core Size: 16/32-Bit
• Speed: 55MHz
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• RAM Size: 128K x 8
• Voltage Supply (Vcc/Vdd): 1.65V ~ 1.95V
• Number of I/O: 62
• Connectivity: CANbus, Ethernet, I2C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Data Converters: A/D 8x10b
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 100-LQFP (14x14)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)

The substitution is valid across all functional and electrical parameters. The primary distinction is the product status transition from obsolete to active, with packaging available in Tray format for the substitute part.

Parameter Comparison

Engineering Selection Recommendations

The AT91SAM7XC512B-AU is the appropriate substitute for the obsolete AT91SAM7X512B-AU. Both devices maintain identical electrical specifications, memory configuration, peripheral integration, and package geometry. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts maintain ROHS3 compliance and identical moisture sensitivity specifications, supporting equivalent handling and storage requirements. The transition from the SAM7X to SAM7XC series variant does not introduce functional or electrical incompatibilities within the specified parameter set.

Frequently Asked Questions (FAQ)

Q: Are the AT91SAM7X512B-AU and AT91SAM7XC512B-AU pin-compatible?

A: Yes. Both devices utilize the 100-LQFP (14x14) package with identical pin counts and I/O configuration (62 I/O lines). PCB layout and footprint requirements are equivalent.

Q: What is the primary reason for substitution?

A: The AT91SAM7X512B-AU is classified as obsolete. The AT91SAM7XC512B-AU provides an active production alternative with identical functional and electrical parameters.

Q: Are memory specifications identical between the two parts?

A: Yes. Both devices feature 512KB FLASH program memory and 128K x 8 RAM configuration with identical access characteristics.

Q: Do both parts support the same connectivity interfaces?

A: Yes. Both devices integrate CANbus, Ethernet, I2C, SPI, SSC, UART/USART, and USB interfaces with identical peripheral support including DMA, PWM, WDT, and brown-out detection.

Q: Are there differences in operating voltage or temperature range?

A: No. Both parts operate at 1.65V ~ 1.95V supply voltage and support the -40°C ~ 85°C temperature range.

Q: What are the packaging differences?

A: The main part is supplied in standard packaging, while the substitute is available in Tray packaging format. Both maintain identical ROHS3 compliance and MSL 3 (168 Hours) moisture sensitivity specifications.