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Microchip Technology AT91SAM9XE512B-QU
- Part No.:
- AT91SAM9XE512B-QU
- Manufacturer:
- Microchip Technology
- Category:
- Microprocessors
- Package:
- 208-BFQFP
- Datasheet:
-
AT91SAM9XE512B-QU.pdf
- Description:
- IC MPU SAM9XE 180MHZ 208QFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,034
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Product details
Overview
AT91SAM9XE512B-QU from Microchip Technology (formerly Atmel) is an ARM926EJ-S-based embedded microcontroller featuring 32 KB ROM, 32 KB SRAM, and 512 KB on-chip high-speed Flash memory. It integrates a 10/100 Ethernet MAC with MII/RMII support, USB 2.0 Full Speed Device and Host ports, six UARTs, SPI, TWI, 4-channel 10-bit ADC, and Image Sensor Interface - deployed in industrial HMI, networked gateways, and edge vision nodes.
For engineers reviewing the AT91SAM9XE512B-QU datasheet, AT91SAM9XE512B-QU pinout, AT91SAM9XE512B-QU application, or AT91SAM9XE512B-QU equivalent, key selection criteria include its 208-pin PQFP package, 180 MHz ARM926EJ-S core performance, dual-voltage I/O domains (1.65–3.6 V), integrated MMU for Linux-capable operation, and Flash erase command via dedicated ERASE pin.
Technical Context
The AT91SAM9XE512B-QU implements a 6-layer AHB bus matrix enabling concurrent access by six masters-including ARM926 instruction/data buses, PDC, USB Host, ISI, and EMAC-against five slaves including internal SRAM, ROM, Flash, EBI, and peripherals. Its clock system includes two PLLs (up to 240 MHz and 100 MHz), programmable slow clock source (32.768 kHz or RC), and independent power domains for core (1.65–1.95 V), analog (3.0–3.6 V), and I/O (1.65–3.6 V).
Memory subsystem features 128-bit-wide Flash interface with 45 ns read time, 4 ms page programming, and 10,000 write cycles; external bus interface supports SDRAM, NAND Flash with ECC, CompactFlash®, and static memory. The ERASE pin (active-high, VDDIOP0-referenced, 15 kΩ internal pull-down) enables hardware-triggered Flash/NVM reinitialization with 200 ms debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM926EJ-S @ up to 180 MHz - supports Thumb/ARM instruction sets, Jazelle Java acceleration, and MMU for full Linux OS execution |
| Embedded Memory | 32 KB ROM + 32 KB SRAM + 512 KB Flash (1024 × 512-byte pages) - enables standalone boot and firmware storage without external memory |
| Connectivity | Ethernet MAC 10/100 Base-T (MII/RMII), USB 2.0 FS Device + single-port Host, six USARTs, two SPI, two TWI, SSC, MCI - supports wired networking, peripheral bridging, and multimedia card interfacing |
| Analog & Imaging | 4-channel 10-bit ADC (VDDANA-referenced), Image Sensor Interface (ITU-R BT.601/656, 12-bit data path, SAV/EAV sync) - suitable for sensor acquisition and camera subsystem integration |
| I/O & Power | 96 multiplexed PIO lines, 3.0–3.6 V VDDIOP0/VDDIOP1, 1.65–1.95 V VDDCORE/VDDPLL/VDDBU - enables mixed-signal design with voltage domain isolation and high-drive capability (16 mA per line) |
| Package | 208-pin PQFP (0.5 mm pitch), RoHS-compliant - compatible with standard surface-mount assembly and thermal management for industrial PCBs |
Pinout & Package
AT91SAM9XE512B-QU is housed in a 208-pin Plastic Quad Flat Package (PQFP) with 0.5 mm pitch, designed for industrial temperature range operation and compatible with Atmel SAM9260 eMPU pinout except for ERASE replacing BMS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ERASE (Pin 40) | Flash/NVM configuration control | Active-high command input with internal 15 kΩ pull-down; debounced via RC or 32.768 kHz oscillator; initiates full Flash erase and NVM bit reset |
| NRST (Pin 36) | Master reset signal | Open-drain I/O with 100 kΩ internal pull-up; asserts synchronous reset across all modules including CPU, peripherals, and clocks |
| DDP/DDM (Pins 55/54) | USB Device differential pair | On-chip transceiver outputs referenced to VDDIOP0; require 27 Ω series termination and 15 kΩ pull-down on DDM for SE0 detection |
| ETX0–ETX3 / ERX0–ERX3 (Pins 105–108, 113–116) | Ethernet MAC data lanes | MII-mode 4-bit transmit/receive paths; RMII mode uses only ETX0/ERX0 and ETX1/ERX1 with shared reference clock (ETXCK/ERXCK) |
| VDDIOP0 (Pins 5, 13, 32, 169, 187, 199) | Peripheral I/O power supply | 3.0–3.6 V rail powering USB transceivers, PIOs, USARTs, SPI, TWI, and MCI - must be stable before VDDCORE during power-up |
Key Features
| Feature | Design Value |
|---|---|
| ARM926EJ-S with MMU | Enables full Linux kernel execution and memory protection in resource-constrained edge devices |
| Integrated Ethernet MAC + USB Host/Device | Eliminates need for external PHY or hub ICs in gateway and bridge applications |
| Image Sensor Interface (ISI) | Hardware-accelerated capture of ITU-R BT.601/656 video streams with preview scaler and YCbCr formatting |
| Dual-voltage I/O domains | Allows direct interfacing with 1.8 V, 2.5 V, and 3.3 V peripherals without level shifters |
| Flash security & lock bits | Prevents unauthorized read-out or overwrite of firmware; supports field-programmable code protection |
Applications
| Industrial Gateway | Edge Vision Node |
|---|---|
Use Scenario: Protocol translation between Modbus RTU field devices and cloud MQTT brokers over Ethernet/WAN. IC Role / Device Role / Timing Role: Central processing unit running real-time Linux, managing dual-network stacks (Ethernet + serial), and executing deterministic I/O polling. Use Value: Integrated Ethernet MAC and six UARTs reduce BOM cost and PCB area while enabling concurrent protocol handling without external bridges. | Use Scenario: Low-power machine vision inspection in factory automation using CMOS image sensors and local inference. IC Role / Device Role / Timing Role: Image acquisition controller with ISI-driven frame capture, preprocessing, and DMA-assisted transfer to DDR via EBI. Use Value: Hardware ISI with SAV/EAV sync and 12-bit data path ensures precise timing alignment and minimal CPU overhead for high-frame-rate capture. |
| Human-Machine Interface | Secure Embedded Controller |
Use Scenario: Touch-enabled panel PC with SD card logging, USB host for peripheral attachment, and Ethernet diagnostics. IC Role / Device Role / Timing Role: Application processor driving GUI via external LCD controller, managing MCI for data storage, and servicing USB HID devices. Use Value: 512 KB Flash stores bootloader, kernel, rootfs, and application binaries; MCI interface supports hot-plug SD/SDIO cards for field updates. | Use Scenario: Firmware-secured PLC module requiring tamper-resistant code execution and secure boot verification. IC Role / Device Role / Timing Role: Trusted execution environment with ROM-based secure boot, Flash lock bits, and MMU-enforced memory isolation. Use Value: Built-in security bit and page-lock capabilities prevent reverse engineering and unauthorized firmware modification in certified industrial systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM9-based microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT91SAM9G20-CU | Same ARM926EJ-S core but 256 KB Flash, no ISI, no USB Host, 217-ball LFBGA only | Lacks imaging interface and dual USB roles; limited to non-vision, non-host use cases | Select when ISI and USB Host are unnecessary and LFBGA packaging is acceptable |
| SAMA5D31A-CU | ARM Cortex-A5 core, 512 MB DDR3 support, no internal Flash, higher clock (536 MHz), different peripheral set | Requires external Flash and DDR; targets higher-performance Linux applications with GPU offload | Select for next-generation designs needing scalable performance beyond ARM9 limits |
Compared with AT91SAM9XE512B-QU, AT91SAM9G20-CU offers lower Flash density and no imaging capability but shares identical toolchain and Linux BSP maturity; SAMA5D31A-CU delivers significantly higher compute throughput at the cost of increased power, external memory dependency, and software migration effort.
Availability
AT91SAM9XE512B-QU is available at Aetrix Electronics and suitable for industrial gateways, edge vision nodes, human-machine interfaces, and secure embedded controllers requiring stable component supply across long-lifecycle deployments.
Supply support for AT91SAM9XE512B-QU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology acquired Atmel in 2016 and maintains full support for the SMART SAM9 family, delivering high-integration ARM-based microcontrollers for industrial, automotive, and IoT applications.
The SAM9XE product line was designed specifically for cost-sensitive, Linux-capable edge devices requiring integrated connectivity (Ethernet/USB), imaging (ISI), and robust Flash-based firmware storage - targeting industrial automation and intelligent sensing endpoints.
FAQ
What is the maximum operating frequency of the AT91SAM9XE512B-QU?
The AT91SAM9XE512B-QU operates at up to 180 MHz using its internal PLL, delivering 200 MIPS performance. This frequency is achieved with the ARM926EJ-S core running from the main oscillator (3–20 MHz) multiplied by PLLA, and requires stable 1.65–1.95 V VDDCORE and proper decoupling per the datasheet layout guidelines. The AT91SAM9XE512B-QU does not support overclocking beyond this rated speed.
Does the AT91SAM9XE512B-QU support Linux operating systems?
Yes, the AT91SAM9XE512B-QU supports Linux due to its ARM926EJ-S core with full Memory Management Unit (MMU), 32 KB SRAM for boot loader execution, and 512 KB Flash for storing kernel and root filesystem. Official Linux BSPs from Microchip (formerly Atmel) provide drivers for Ethernet, USB, MCI, ISI, and UARTs. The AT91SAM9XE512B-QU has been validated with Yocto Project and Buildroot distributions.
How is Flash memory erased on the AT91SAM9XE512B-QU?
Flash erasure on the AT91SAM9XE512B-QU is initiated by asserting the ERASE pin (Pin 40) high for ≥200 ms, leveraging its internal 15 kΩ pull-down resistor for safe default state. This hardware command triggers full Flash and NVM bit reset. Alternatively, sector/page erase can be performed via software using the Enhanced Embedded Flash Controller (EEFC) registers. The AT91SAM9XE512B-QU supports 10,000 write/erase cycles with 10-year data retention.
What are the power supply requirements for the AT91SAM9XE512B-QU?
The AT91SAM9XE512B-QU requires five distinct power domains: VDDCORE/VDDPLL/VDDBU at 1.65–1.95 V, VDDIOP0 at 3.0–3.6 V (for USB and general I/O), VDDIOP1 at 1.65–3.6 V (for ISI), and VDDANA at 3.0–3.6 V (for ADC). Power sequencing mandates VDDIOP0/VDDIOP1/VDDIOM stabilization before VDDCORE release. The AT91SAM9XE512B-QU includes brownout detection and watchdog timers for robust power failure response.
Is the AT91SAM9XE512B-QU pin-compatible with other SAM9 devices?
The AT91SAM9XE512B-QU is pin-compatible with the AT91SAM9260 eMPU in 208-pin PQFP package, except that Pin 40 is ERASE instead of BMS. It is not pin-compatible with LFBGA-packaged SAM9 variants (e.g., AT91SAM9XE512B-CU) or other SAM9 families like SAM9G or SAM9N due to differing peripheral mappings and ball/pin counts. The AT91SAM9XE512B-QU maintains consistent signal naming and placement for critical interfaces (EBI, USB, Ethernet) across its own PQFP variant group.
AT91SAM9XE512B-QU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 208-BFQFP
- Series:
- SAM9XE
- Packaging:
- Tray
- Product Status:
- Active
- 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)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 208-PQFP (28x28)
- Additional Interfaces:
- EBI/EMI, I2C, ISI, MMC/SD/SDIO, SPI, SSC, UART/USART
AT91SAM9XE512B-QU FAQ
1.How can I place an order for AT91SAM9XE512B-QU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT91SAM9XE512B-QU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT91SAM9XE512B-QU reliable?
The price and inventory of AT91SAM9XE512B-QU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT91SAM9XE512B-QU is usually 5 days.
3.What payment methods are accepted for AT91SAM9XE512B-QU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT91SAM9XE512B-QU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT91SAM9XE512B-QU?
AT91SAM9XE512B-QU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT91SAM9XE512B-QU order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT91SAM9XE512B-QU?
For technical support, including AT91SAM9XE512B-QU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT91SAM9XE512B-QU requirements.
6.How does Aetrix verify that AT91SAM9XE512B-QU is sourced from the original manufacturer or authorized distributors?
All AT91SAM9XE512B-QU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT91SAM9XE512B-QU meets industry standards.
7.What is the process for return or replacement of AT91SAM9XE512B-QU?
All AT91SAM9XE512B-QU units undergo pre-shipment inspection (PSI). If there is an issue with AT91SAM9XE512B-QU, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT91SAM9XE512B-QU part is unused and in its original packaging.
Return procedure for AT91SAM9XE512B-QU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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