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AT91SAM9XE256-QU
Microchip Technology
IC MPU SAM9XE 180MHZ 208QFP
2411 Pcs New Original In Stock
ARM926EJ-S Microprocessor IC SAM9XE 1 Core, 32-Bit 180MHz 208-PQFP (28x28)
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5.0 / 5.0
- (179 Ratings)
AT91SAM9XE256-QU
Product Overview
1289260
DiGi Electronics Part Number
AT91SAM9XE256-QU-DGManufacturer
Microchip Technology
AT91SAM9XE256-QU
Description
IC MPU SAM9XE 180MHZ 208QFPInventory
2411 Pcs New Original In Stock
ARM926EJ-S Microprocessor IC SAM9XE 1 Core, 32-Bit 180MHz 208-PQFP (28x28)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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365 - Day Quality Guarantee - Every part fully backed.
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AT91SAM9XE256-QU Technical Specifications
Category
Embedded, Microprocessors
Packaging
-
Series
SAM9XE
Product Status
Obsolete
Core Processor
ARM926EJ-S
Number of Cores/Bus Width
1 Core, 32-Bit
Speed
180MHz
Co-Processors/DSP
-
RAM Controllers
SDRAM, SRAM
Graphics Acceleration
No
Display & Interface Controllers
LCD, Touchscreen
Ethernet
10/100Mbps
SATA
-
USB
USB 2.0 (3)
Voltage - I/O
1.8V, 2.5V, 3.3V
Operating Temperature
-40°C ~ 85°C (TA)
Security Features
-
Mounting Type
Surface Mount
Package / Case
208-BFQFP
Supplier Device Package
208-PQFP (28x28)
Additional Interfaces
EBI/EMI, I2C, ISI, MMC/SD/SDIO, SPI, SSC, UART/USART
Base Product Number
AT91SAM9XE256
Datasheet & Documents
HTML Datasheet
AT91SAM9XE256-QU-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
3A991A2
HTSUS
8542.31.0001
Additional Information
Other Names
AT91SAM9XE256QU
Standard Package
24
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Leur service après-vente est au sommet, toujours prêt à aider rapidement.
de desembre 02, 2025
Der After-Sales-Support zeigt echtes Engagement und löst Probleme sofort.
de desembre 02, 2025
Quick delivery and helpful support are hallmarks of DiGi Electronics.
de desembre 02, 2025
The packaging is always well-sealed and professional-looking.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the AT91SAM9XE256-QU in a new embedded system given its obsolete status?
Using the AT91SAM9XE256-QU in new designs carries significant supply chain risks due to its obsolete status. While 2378 units are currently in stock, future availability is not guaranteed, which could disrupt long-term production. To mitigate this, designers should secure lifetime buys or evaluate pin- and software-compatible upgrades like the AT91SAM9XE512B-QU. Additionally, consider implementing a migration path in firmware and hardware design to reduce redesign costs if the part becomes unavailable. Always verify component availability with long-term suppliers or authorized distributors to ensure sustainability.
How does the AT91SAM9XE256-QU compare to the AT91SAM9XE512B-QU for replacement in an existing industrial control application?
The AT91SAM9XE256-QU and AT91SAM9XE512B-QU share the same ARM926EJ-S core, 180MHz speed, and 208-PQFP package, making them pin-compatible and largely software-interchangeable. The primary difference is flash memory: 256KB vs. 512KB. When replacing the AT91SAM9XE256-QU with the 512B variant, ensure your boot configuration and memory mapping accommodate the larger flash. This upgrade can future-proof your design and allow for more complex firmware. No hardware changes are typically required, but verify voltage compatibility and retest EMI performance due to potential internal differences.
What are the practical limitations of the integrated LCD and touchscreen controllers in the AT91SAM9XE256-QU for modern HMI designs?
The AT91SAM9XE256-QU supports basic LCD and resistive touchscreen interfaces, suitable for monochrome or low-color-depth displays up to WVGA resolution. However, it lacks hardware graphics acceleration, limiting performance in applications requiring dynamic UIs or high frame rates. For modern HMIs, this can result in CPU overload if UI rendering isn't offloaded. Designers should optimize by using lightweight GUI frameworks (e.g., emWin or µC/GUI) and limit animation complexity. Also, ensure external memory bandwidth (via SDRAM controller) is sufficient to handle display buffer demands without impacting real-time tasks.
What are the power supply sequencing requirements for the AT91SAM9XE256-QU when interfacing with mixed-voltage peripherals?
The AT91SAM9XE256-QU supports 1.8V, 2.5V, and 3.3V I/Os, requiring careful power supply sequencing to prevent latch-up or I/O damage. Core voltage (1.8V) must stabilize before I/O rails are powered. If interfacing with 3.3V peripherals, use level shifters for input signals when the MCU is powered at 1.8V or 2.5V, as the device is not always 3.3V-tolerant on all pins—refer to the datasheet's I/O specifications per bank. A recommended approach is to sequence supplies in this order: 1.8V core → 2.5V (if used) → 3.3V I/O, with voltage ramps within 100ms of each other to ensure safe operation.
How does the lack of integrated security features in the AT91SAM9XE256-QU impact long-term reliability in connected industrial systems?
The AT91SAM9XE256-QU lacks hardware security features like encryption engines or secure boot, increasing vulnerability in networked applications such as 10/100Mbps Ethernet-connected devices. Without these, firmware can be more easily reverse-engineered or tampered with, reducing system reliability over time. To mitigate this, implement external secure elements (e.g., ATECC608B), use encrypted communication protocols (TLS), and perform firmware authenticity checks during boot. Additionally, physically secure the JTAG debug interface and consider obfuscation techniques in firmware to deter unauthorized access.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
AT91SAM9XE256-QU CAD Models
Microchip Technology AT91SAM9XE256-QU PCB symbols & footprints
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