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Microchip Technology AT91SAM9X35-CU-999
- Part No.:
- AT91SAM9X35-CU-999
- Manufacturer:
- Microchip Technology
- Category:
- Microprocessors
- Package:
- 217-LFBGA
- Datasheet:
-
AT91SAM9X35-CU-999.pdf
- Description:
- IC MPU SAM9X 400MHZ 217LFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:873
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Product details
Overview
AT91SAM9X35-CU-999 from Microchip Technology is a 400 MHz ARM926EJ-S™ microprocessor unit featuring integrated LCD controller with 2D acceleration, dual CAN 2.0A/B interfaces, 10/100 Mbps Ethernet MAC, dual high-speed SD/MMC controllers, and a 12-channel 10-bit touchscreen ADC - designed for industrial HMI and connected embedded systems.
For engineers reviewing the AT91SAM9X35-CU-999 datasheet, AT91SAM9X35-CU-999 pinout, AT91SAM9X35-CU-999 application, or AT91SAM9X35-CU-999 equivalent, this page delivers verified technical context, validated BGA217 pin mapping, real-world use cases in industrial HMIs and networked edge devices, and two confirmed alternative MPUs with documented functional trade-offs.
Technical Context
The AT91SAM9X35-CU-999 integrates a 400 MHz ARM926EJ-S core with MMU, 16 KB instruction and data caches, and a 12-layer AHB bus matrix supporting concurrent high-bandwidth transfers across DDR2/LPDDR, NAND Flash (with 24-bit PMECC), and peripheral domains. Its system clock runs up to 133 MHz with dual PLLs - one for system timing and one at 480 MHz dedicated to USB High Speed.
Peripheral subsystems include a graphics-capable LCDC with alpha-blending and rotation, two independent CAN controllers, RMII Ethernet interface, and a software modem device (SMD) supporting Conexant SmartDAA line drivers - all coordinated via an Advanced Interrupt Controller (AIC) and dual 8-channel DMA controllers to minimize CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM926EJ-S™ @ 400 MHz, 1.0V ±10%, with MMU and Thumb® support for Linux/RTOS execution |
| Memory Interface | 32-bit EBI supporting DDR2/LPDDR, SDRAM, static memory, and MLC/SLC NAND with 24-bit ECC |
| Graphics | LCDC with 4-layer overlay, alpha-blending, scaling, rotation, and color conversion for 24-bit RGB displays |
| Connectivity | Dual CAN 2.0A/B controllers, IEEE 802.3-compliant 10/100 Mbps EMAC (RMII only), and soft modem (SMD) |
| Analog | 12-channel 10-bit ADC with dedicated touchscreen support (4-wire/5-wire resistive panel interface) |
| USB | USB Device HS/FS, USB Host HS/FS (dual ports), with on-chip transceivers and dedicated 480 MHz PLL |
| Package | 217-ball BGA, 0.8 mm pitch, 12 × 12 mm footprint, RoHS-compliant |
Pinout & Package
The AT91SAM9X35-CU-999 is housed in a 217-ball BGA package with 0.8 mm ball pitch and 12 × 12 mm body size. Power rails include VDDCORE (1.0 V), VDDANA (3.3 V), VDDIOP0/VDDIOP1 (3.3 V), VDDNF (1.8 V or 3.3 V), and multiple ground domains (GNDCORE, GNDANA, GNDIOP, etc.). Pin functions are multiplexed across four PIO controllers (PA–PD) and dedicated peripheral blocks (EBI, USB, CAN, LCDC, etc.), with reset-state configuration defined per ball in Table 3-3 of DS60001730A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA31, PB0–PB18, PC0–PC31, PD0–PD21 | Programmable I/O lines (105 total) | Configurable as GPIO, peripheral signals (USART, SPI, TWI, PWM, etc.), or address/data bus lines; each supports pull-up/pull-down/Schmitt trigger |
| D0–D15 / D16–D31 | External Bus Interface data bus | 32-bit bidirectional data path for DDR2/LPDDR, SDRAM, NAND, and static memories |
| A0–A25, BA[0..2], SDCK/#SDCK, SDCS, RAS/CAS | EBI address & control signals | Full addressing for up to 256 MB per chip select; supports DDR2 timing, LPDDR low-power modes, and NAND ALE/CLE control |
| CANTX0/CANRX0, CANTX1/CANRX1 | CAN transceiver interface | Dedicated differential outputs/inputs compliant with ISO 11898-1; require external CAN transceivers |
| LCDDAT0–LCDDAT23, LCDPCK, LCDHSYNC, LCDVSYNC | LCD controller parallel interface | 24-bit RGB output with programmable pixel clock (up to 80 MHz), sync timing, and display enable/control signals |
| HHSDPA/HHSDMA, HFSDPA/HFSDMA | USB High Speed / Full Speed differential pairs | On-die transceivers for USB 2.0 HS (480 Mbps) and FS (12 Mbps); require proper PCB impedance control (90 Ω differential) |
Key Features
| Feature | Design Value |
|---|---|
| ARM926EJ-S Core + MMU | Enables full Linux kernel execution and memory protection for multi-process industrial applications |
| Integrated LCDC with 2D Acceleration | Reduces CPU load for UI rendering by offloading alpha-blending, scaling, and rotation operations in hardware |
| Dual Independent CAN Controllers | Supports redundant or multi-bus automotive/industrial networks without external protocol ICs |
| 24-bit PMECC for NAND Flash | Enables reliable boot and storage on cost-effective MLC NAND with field-proven error correction |
| 12-channel Touchscreen ADC | Direct interface to 4-/5-wire resistive touch panels with automatic coordinate acquisition and noise filtering |
| Soft Modem Device (SMD) | Hardware-accelerated modem logic compatible only with Conexant SmartDAA line drivers for PSTN connectivity |
Applications
| Industrial HMI Terminal | Networked Edge Gateway |
|---|---|
Use Scenario: A factory-floor operator interface with 7-inch resistive touchscreen, Ethernet backhaul, and local CAN bus to PLCs. IC Role / Device Role / Timing Role: AT91SAM9X35-CU-999 serves as main application processor running Linux, driving LCD, sampling touch input, managing CAN messaging, and handling TCP/IP stack. Use Value: Integrated LCDC and 12-channel ADC eliminate external graphics and touch controllers; dual CAN enables direct machine communication without protocol bridges. | Use Scenario: Remote monitoring node aggregating sensor data via CAN and serial buses, transmitting over 10/100 Ethernet to SCADA systems. IC Role / Device Role / Timing Role: AT91SAM9X35-CU-999 acts as protocol gateway with real-time CAN frame processing, Ethernet packet assembly, and deterministic interrupt latency under RTOS. Use Value: Dual CAN controllers and RMII Ethernet allow simultaneous fieldbus and IP network operation; 133 MHz system clock ensures low-latency packet forwarding. |
| Medical Device Display Unit | Smart Energy Meter Interface |
Use Scenario: Portable diagnostic equipment with graphical UI, battery-backed RTC, and isolated CAN for sensor modules. IC Role / Device Role / Timing Role: AT91SAM9X35-CU-999 executes safety-certified UI firmware, manages power states via shutdown controller, and acquires analog sensor inputs through ADC channels. Use Value: Internal 32 kHz RC oscillator and four battery-backed registers (GPBR) maintain time and state during power loss; 10-bit ADC meets medical-grade resolution requirements. | Use Scenario: DIN-rail mounted energy meter with LCD display, RS-485 communication, and CAN-based submetering interface. IC Role / Device Role / Timing Role: AT91SAM9X35-CU-999 coordinates LCD refresh, processes pulse inputs via TC peripherals, and routes CAN messages between tariff modules and central concentrator. Use Value: Six 32-bit Timer/Counters provide precise pulse counting and time-stamping; EBI supports external FRAM for tamper-proof event logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAMA5D36-CU | ARM Cortex-A5 @ 536 MHz, no integrated LCD controller, adds SATA and PCIe, higher power consumption | Better for compute-intensive tasks but requires external GPU or framebuffer; lacks native touchscreen ADC | Select when higher CPU performance and storage expansion (SATA) outweigh LCD/ADC integration needs |
| ATSAMA5D27-CU | ARM Cortex-A5 @ 500 MHz, includes security features (TRNG, AES, SHA), no CAN, single Ethernet | Targeted at secure IoT endpoints; missing dual CAN and LCDC limits use in industrial HMIs | Choose for certified secure boot and cryptographic acceleration where CAN and graphics are handled externally |
Compared with SAMA5D36-CU and ATSAMA5D27-CU, the AT91SAM9X35-CU-999 offers superior integration for cost-sensitive industrial HMIs - retaining dedicated LCD acceleration, dual CAN, and touchscreen ADC while operating at lower voltage and thermal envelope than newer Cortex-A5 derivatives.
Availability
AT91SAM9X35-CU-999 is available at Aetrix Electronics and suitable for industrial HMI terminals, networked edge gateways, medical display units, and smart energy meter interfaces requiring stable component supply and long-term lifecycle support.
Supply support for AT91SAM9X35-CU-999 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog, FPGA, and timing solutions with strong focus on industrial, automotive, and aerospace reliability.
The AT91SAM9X35-CU-999 belongs to Microchip's SAM9X series - a family of ARM9-based MPUs engineered specifically for deterministic real-time industrial HMIs, offering balanced performance, peripheral richness, and long-lifecycle availability.
FAQ
What is the maximum operating frequency of the AT91SAM9X35-CU-999 core?
The AT91SAM9X35-CU-999 features an ARM926EJ-S™ core rated for operation up to 400 MHz at 1.0 V ±10%. This frequency is guaranteed across industrial temperature range (–40°C to +85°C) when supplied with stable core voltage and appropriate cooling. The actual achievable speed depends on PCB layout, power integrity, and thermal design - but 400 MHz represents the fully characterized maximum under specification conditions for the AT91SAM9X35-CU-999.
Does the AT91SAM9X35-CU-999 support DDR3 memory?
No, the AT91SAM9X35-CU-999 does not support DDR3 memory. Its External Bus Interface (EBI) is explicitly specified for DDR2, LPDDR, SDRAM, LPSDRAM, and NAND Flash - with no DDR3 timing parameters, command encoding, or electrical specifications provided in DS60001730A. Attempting DDR3 interfacing would violate the AT91SAM9X35-CU-999's memory controller architecture and result in non-functional operation.
How many USB interfaces does the AT91SAM9X35-CU-999 integrate?
The AT91SAM9X35-CU-999 integrates three distinct USB interfaces: one USB Device port supporting High Speed (480 Mbps) and Full Speed (12 Mbps), and two independent USB Host ports - each capable of High Speed and Full Speed operation. These are implemented with dedicated on-chip transceivers and separate PHY layers, allowing concurrent device and host functionality without shared bandwidth limitations in the AT91SAM9X35-CU-999.
Can the AT91SAM9X35-CU-999 boot directly from NAND Flash?
Yes, the AT91SAM9X35-CU-999 supports direct boot from NAND Flash using its integrated NAND Flash Controller with programmable Multi-bit Error Correcting Code (PMECC) up to 24 bits. Boot mode selection is controlled by the BMS pin, and the internal ROM contains a bootstrap routine that initializes NAND timing, performs ECC decoding, and loads the first-stage bootloader - enabling robust, field-upgradable firmware deployment without external boot memory in the AT91SAM9X35-CU-999.
What touchscreen interface standards does the AT91SAM9X35-CU-999 support?
The AT91SAM9X35-CU-999 supports both 4-wire and 5-wire resistive touchscreen panels via its dedicated 12-channel 10-bit ADC. It provides hardware-accelerated coordinate acquisition, including automatic X/Y measurement sequencing, touch detection, and noise filtering - but does not support capacitive (projected or surface) or infrared touch technologies. This analog front-end is optimized exclusively for resistive panel interfacing in the AT91SAM9X35-CU-999.
AT91SAM9X35-CU-999 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 217-LFBGA
- Series:
- SAM9X
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Core Processor:
- ARM926EJ-S
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 400MHz
- Co-Processors/DSP:
- -
- RAM Controllers:
- LPDDR, LPDDR2, DDR2, DDR, SDR, 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, 3.0V, 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 217-LFBGA (15x15)
- Additional Interfaces:
- CAN, EBI/EMI, I2C, MMC/SD/SDIO, SPI, SSC, UART/USART
AT91SAM9X35-CU-999 FAQ
1.How can I place an order for AT91SAM9X35-CU-999 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT91SAM9X35-CU-999 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 AT91SAM9X35-CU-999 reliable?
The price and inventory of AT91SAM9X35-CU-999 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT91SAM9X35-CU-999 is usually 5 days.
3.What payment methods are accepted for AT91SAM9X35-CU-999?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT91SAM9X35-CU-999 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT91SAM9X35-CU-999?
AT91SAM9X35-CU-999 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT91SAM9X35-CU-999 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 AT91SAM9X35-CU-999?
For technical support, including AT91SAM9X35-CU-999 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT91SAM9X35-CU-999 requirements.
6.How does Aetrix verify that AT91SAM9X35-CU-999 is sourced from the original manufacturer or authorized distributors?
All AT91SAM9X35-CU-999 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 AT91SAM9X35-CU-999 meets industry standards.
7.What is the process for return or replacement of AT91SAM9X35-CU-999?
All AT91SAM9X35-CU-999 units undergo pre-shipment inspection (PSI). If there is an issue with AT91SAM9X35-CU-999, 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 AT91SAM9X35-CU-999 part is unused and in its original packaging.
Return procedure for AT91SAM9X35-CU-999:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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