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Microchip Technology AT91SAM9G35-CU-999
- Part No.:
- AT91SAM9G35-CU-999
- Manufacturer:
- Microchip Technology
- Category:
- Microprocessors
- Package:
- 217-LFBGA
- Datasheet:
-
AT91SAM9G35-CU-999.pdf
- Description:
- IC MPU SAM9G 400MHZ 217LFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AT91SAM9G35-CU-999 from Microchip Technology (formerly Atmel) is a 400 MHz ARM926EJ-S™ embedded microprocessor unit optimized for industrial human-machine interface applications. It integrates a 10-bit 12-channel touchscreen ADC, 4-layer LCD controller with 2D acceleration, dual HS/FS USB ports, 10/100 Mbps Ethernet MAC, and NAND Flash controller with 24-bit ECC - enabling use in medical equipment, building automation, and POS terminals.
For engineers reviewing the AT91SAM9G35-CU-999 datasheet, AT91SAM9G35-CU-999 pinout, AT91SAM9G35-CU-999 application, or AT91SAM9G35-CU-999 equivalent, key selection criteria include DDR2/LPDDR memory interface support, 217-ball BGA package compatibility, ARM9 core clock stability at 400 MHz, and integrated soft modem (SMD) with Conexant SmartDAA line driver compliance.
Technical Context
The AT91SAM9G35-CU-999 implements a 10-layer AHB bus matrix with dual 8-channel DMA controllers to sustain high-bandwidth peripheral transfers without CPU intervention. Its system clock architecture includes two PLLs: one for general system operation and a dedicated 480 MHz PLL for USB High Speed functionality.
Memory subsystem integration includes a 32 KB single-cycle SRAM, 64 KB ROM with programmable boot order (NAND Flash, SD Card, DataFlash), and an External Bus Interface supporting 4-bank/8-bank DDR2/LPDDR, SDRAM/LPSDRAM, static memories, and MLC/SLC NAND Flash with hardware-accelerated PMECC error correction up to 24 bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM926EJ-S™ running at 400 MHz @ 1.0 V ±10% - enables real-time deterministic execution of Linux-based HMI stacks |
| Memory Interface | 32-bit EBI supporting DDR2/LPDDR, SDR/LPSDR, static RAM, and NAND Flash with 24-bit PMECC - eliminates need for external ECC logic in NAND-based boot storage |
| Graphics Engine | 4-layer LCD controller with alpha-blending, scaling, rotation, and color conversion - supports simultaneous overlay of video, GUI, and status elements on resistive touch displays |
| ADC | 12-channel 10-bit touchscreen ADC with 4-wire/5-wire resistive panel support - provides direct interface to industrial-grade touchscreens without external digitizer IC |
| USB | HS USB Device + HS/FS USB Host ports with on-chip transceivers - enables simultaneous device-mode firmware updates and host-mode peripheral attachment (e.g., barcode scanners) |
| Package | 217-ball BGA, 0.8 mm pitch - matches standard PCB assembly processes for industrial control modules with thermal pad grounding requirements |
| Power Domains | Separate VDDCORE (1.0 V), VDDANA (3.3 V), VDDIOP0/VDDIOP1 (1.65–3.6 V), VDDUTMII (3.3 V) - allows independent power gating and noise isolation between analog, digital I/O, and USB PHY sections |
Pinout & Package
The AT91SAM9G35-CU-999 is housed in a 217-ball BGA package with 0.8 mm ball pitch and thermal pad grounding. Power rails include VDDCORE, VDDANA, VDDIOP0, VDDIOP1, VDDNF, VDDIOM, VDDUTMII, VDDUTMIC, VDDPLLA, VDDOSC, and VDDBU - each requiring dedicated decoupling per datasheet layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA31, PB0–PB18, PC0–PC31, PD0–PD21 | Programmable I/O lines (105 total) | Configurable as GPIO, peripheral functions (USART, SPI, TWI, PWM), or memory address/data - supports multiplexed peripheral routing without external glue logic |
| D0–D31, A0–A25, NCS0–NCS5, NRD, NWR0–NWR3 | External Bus Interface signals | Direct connection to DDR2, SDRAM, NAND Flash, or static memory - enables boot from NAND with hardware ECC and seamless memory-mapped peripheral access |
| LCDDAT0–LCDDAT23, LCDPCK, LCDVSYNC, LCDHSYNC | LCD controller parallel interface | Drives 24-bit RGB TFT panels up to WXGA resolution - supports pixel clock up to 85 MHz for smooth animation in medical display systems |
| AD0XP_UL–AD4LR, AD5–AD11 | Analog inputs for touchscreen and auxiliary sensing | 12-channel 10-bit ADC with dedicated touchscreen sequencing - eliminates need for external touch controller in cost-sensitive industrial HMIs |
| HHSDPA/HHSDMA, HFSDPA/HFSDMA | USB High Speed and Full Speed differential pairs | On-die transceivers compliant with USB 2.0 HS/FS electrical specs - reduces BOM count and PCB routing complexity for embedded host/device applications |
Key Features
| Feature | Design Value |
|---|---|
| 4-layer LCD controller with 2D acceleration | Enables hardware-accelerated picture-in-picture, alpha-blending, and rotation - reduces CPU load by >60% during multi-layer GUI rendering |
| Integrated NAND Flash controller with 24-bit PMECC | Supports raw MLC NAND with bit-error rates up to 1e-5 - extends flash lifetime and eliminates need for external ECC co-processor |
| Dual HS/FS USB Host + HS USB Device | Allows concurrent attachment of USB peripherals (keyboards, printers) while acting as a USB device for firmware updates - simplifies field service workflows |
| Soft Modem Device (SMD) with Conexant SmartDAA | Provides PSTN connectivity using industry-standard line driver - enables alarm system reporting and remote diagnostics over legacy phone lines |
| 10-layer AHB bus matrix with dual 8-channel DMA | Decouples high-throughput peripherals (EMAC, HSMCI, LCDC) from CPU bandwidth - ensures deterministic latency for real-time Ethernet packet handling |
Applications
| Medical Patient Monitor | Industrial Building Automation Panel |
|---|---|
Use Scenario: Compact bedside monitor displaying vital signs, waveform overlays, and touchscreen-controlled alarms. IC Role / Device Role / Timing Role: Primary application processor executing Linux-based UI, managing 10-bit ADC sampling of analog sensor inputs, and driving 800×480 resistive LCD with 2D-accelerated overlays. Use Value: Integrated LCD controller and touchscreen ADC eliminate two external ICs; 400 MHz ARM9 core sustains real-time waveform rendering at 250 Hz update rate. | Use Scenario: Wall-mounted HVAC control panel with Ethernet backhaul, local touch interface, and SD card logging. IC Role / Device Role / Timing Role: Central controller interfacing with temperature/humidity sensors via ADC, communicating with BACnet/IP network via EMAC, and storing event logs on SD card via HSMCI. Use Value: Dual HSMCI interfaces allow redundant SD card storage; 10/100 Mbps EMAC with RMII supports deterministic BACnet scheduling at 100 Mbps full-duplex. |
| POS Terminal with Barcode Scanner | Alarm System Control Unit |
Use Scenario: Retail point-of-sale terminal integrating touchscreen UI, USB-connected barcode scanner, and Ethernet payment gateway. IC Role / Device Role / Timing Role: Application MPU hosting Linux OS, enumerating USB scanner as HID device, managing secure Ethernet transaction stack, and driving 480×272 LCD with alpha-blended branding layers. Use Value: HS USB Host port supports 480 Mbps scanner data streaming; 4-layer LCD engine overlays transaction prompts atop live camera feed without frame drops. | Use Scenario: Security alarm panel with PSTN fallback communication, keypad input, and battery-backed event logging. IC Role / Device Role / Timing Role: Main controller reading keypad matrix via PIO, managing battery-backed GPBR registers, initiating PSTN calls via SMD + SmartDAA line driver, and logging events to NAND Flash with hardware ECC. Use Value: Integrated SMD and 24-bit NAND ECC ensure regulatory-compliant PSTN reporting and 10-year flash retention in unattended installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded MPU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAMA5D31-CU | Cortex-A5 core at 536 MHz, no integrated SMD, supports LPDDR2 but not DDR2 | Lacks PSTN modem capability; requires external line driver for alarm reporting | Select when higher CPU performance and Linux RT determinism are prioritized over legacy telephony support |
| i.MX283CJM6B | ARM926EJ-S core at 454 MHz, integrated LCD controller but no NAND ECC engine, single USB host port | Requires external ECC for NAND boot; limited USB peripheral expansion capability | Select when cost-sensitive designs favor Freescale toolchain and require only basic touchscreen + Ethernet functionality |
Compared with SAMA5D31-CU and i.MX283CJM6B, the AT91SAM9G35-CU-999 uniquely combines ARM9-class software compatibility, hardware-accelerated 4-layer graphics, 24-bit NAND ECC, and certified SmartDAA modem support - making it optimal for industrial HMI designs requiring long-term availability and legacy infrastructure integration.
Availability
AT91SAM9G35-CU-999 is available at Aetrix Electronics and suitable for medical equipment, building automation, and POS terminals requiring stable component supply across extended product lifecycles.
Supply support for AT91SAM9G35-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 acquired Atmel in 2016 and maintains the SMART ARM-based MPU portfolio with long-term industrial support commitments.
The AT91SAM9G35-CU-999 belongs to the SMART ARM9 series designed specifically for cost-optimized, low-power industrial HMIs requiring integrated graphics, touchscreen, connectivity, and legacy interface support - not general-purpose computing.
FAQ
What is the maximum operating frequency of the AT91SAM9G35-CU-999 core?
The AT91SAM9G35-CU-999 features an ARM926EJ-S™ core rated for operation at up to 400 MHz at 1.0 V ±10%. This frequency is guaranteed under industrial temperature conditions (–40°C to +85°C) with proper power supply regulation and thermal management per the datasheet's power sequence requirements. The AT91SAM9G35-CU-999 does not support dynamic frequency scaling beyond this fixed maximum.
Does the AT91SAM9G35-CU-999 support booting from NAND Flash with hardware ECC?
Yes, the AT91SAM9G35-CU-999 includes a dedicated NAND Flash controller with programmable Multi-bit Error Correcting Code (PMECC) supporting up to 24 bits of correction per 512-byte sector. Booting from NAND Flash is enabled via the Boot Mode Select (BMS) pin and supported in the internal ROM bootstrap routine - eliminating need for external ECC co-processors or software-based correction in the AT91SAM9G35-CU-999 design.
What touchscreen interface standards does the AT91SAM9G35-CU-999 ADC support?
The AT91SAM9G35-CU-999 integrates a 12-channel 10-bit ADC explicitly designed for 4-wire and 5-wire resistive touchscreen panels. It supports automatic sequencing, pressure measurement, and coordinate calculation in hardware - requiring no external touch controller. The AT91SAM9G35-CU-999 does not support capacitive or surface acoustic wave (SAW) touch technologies natively.
Can the AT91SAM9G35-CU-999 drive a WXGA (1280×800) LCD display?
Yes, the AT91SAM9G35-CU-999's LCD controller supports pixel clocks up to 85 MHz and 24-bit RGB output (LCDDAT0–LCDDAT23), enabling native WXGA resolution at 60 Hz refresh rate. The 4-layer overlay engine allows simultaneous display of video, GUI widgets, and status bars - all hardware-accelerated. Achieving this requires proper impedance-controlled PCB routing and matching of LCDDEN/LCDPCK timing per the AT91SAM9G35-CU-999 datasheet's LCD setup/hold specifications.
Is the Soft Modem Device (SMD) in the AT91SAM9G35-CU-999 compatible with standard PSTN lines?
The AT91SAM9G35-CU-999 SMD block is designed exclusively for use with the Conexant SmartDAA line driver IC (e.g., CX82310). It does not include a built-in line interface; instead, it provides digital audio and control signals (DIBN/DIBP) compliant with SmartDAA protocol. Therefore, PSTN compatibility depends on correct external SmartDAA implementation - the AT91SAM9G35-CU-999 itself meets FCC Part 15 and EN 300 328 requirements only when paired with certified SmartDAA hardware.
AT91SAM9G35-CU-999 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 217-LFBGA
- Series:
- SAM9G
- 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:
- DDR2, SDRAM, SRAM
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- LCD, Touchscreen
- Ethernet:
- 10/100Mbps
- SATA:
- -
- USB:
- USB 2.0 (3)
- Voltage - I/O:
- 1.8V, 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:
- EBI/EMI, I2C, MMC/SD/SDIO, SPI, SSC, UART/USART
AT91SAM9G35-CU-999 FAQ
1.How can I place an order for AT91SAM9G35-CU-999 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT91SAM9G35-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 AT91SAM9G35-CU-999 reliable?
The price and inventory of AT91SAM9G35-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 AT91SAM9G35-CU-999 is usually 5 days.
3.What payment methods are accepted for AT91SAM9G35-CU-999?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT91SAM9G35-CU-999 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT91SAM9G35-CU-999?
AT91SAM9G35-CU-999 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT91SAM9G35-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 AT91SAM9G35-CU-999?
For technical support, including AT91SAM9G35-CU-999 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT91SAM9G35-CU-999 requirements.
6.How does Aetrix verify that AT91SAM9G35-CU-999 is sourced from the original manufacturer or authorized distributors?
All AT91SAM9G35-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 AT91SAM9G35-CU-999 meets industry standards.
7.What is the process for return or replacement of AT91SAM9G35-CU-999?
All AT91SAM9G35-CU-999 units undergo pre-shipment inspection (PSI). If there is an issue with AT91SAM9G35-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 AT91SAM9G35-CU-999 part is unused and in its original packaging.
Return procedure for AT91SAM9G35-CU-999:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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