AT91SAM9G45B-CU

The AT91SAM9G45B-CU is an ARM926EJ-S based 32-bit microprocessor running at 400 MHz in a 324-TFBGA (15×15) package. It combines a high-performance processor core with a broad set of peripherals for user interfaces, imaging, audio and high-speed connectivity.

Designed for embedded and industrial applications, the device integrates display and touch support, camera and audio interfaces, 10/100 Mbps Ethernet, high-speed USB and memory interfaces including DDR2 and NAND Flash to support connected, interactive systems operating from −40 °C to 85 °C.

Key Features

• Core — ARM926EJ-S 32-bit processor running at 400 MHz with instruction and data caches and an MMU for embedded OS support.
• Memory and Bus — DDR2/LPDDR/SDRAM/LPSDR external memory controllers plus support for static memories and SLC NAND Flash with ECC. Includes one 64-Kbyte internal SRAM (configurable as TCM) and one 64-Kbyte internal ROM.
• High-bandwidth Architecture — 133 MHz multi-layer AHB bus architecture with 37 DMA channels and a dual external bus interface to sustain high peripheral and data rates.
• Display and Imaging — LCD controller supporting STN and TFT displays up to 1280×860 and an ITU-R BT.601/656 image sensor interface for camera input; touchscreen support via on-chip ADC.
• Connectivity and Storage — 10/100 Mbps Ethernet MAC, USB Device High Speed and USB Host High/Full Speed with on-chip transceiver, plus two high-speed memory card hosts (SDIO/SDCard/MMC).
• Audio and Legacy I/O — On-chip AC'97 controller and multiple serial interfaces including TWI, USARTs, SPI, synchronous serial controllers (I2S mode) and PWM/timers.
• Power and RTC — Power management controller with efficient clock gating and a battery backup section; selectable low-power oscillators and PLLs including a 480 MHz PLL optimized for USB.
• Industrial Grade and Package — Industrial operating temperature range of −40 °C to 85 °C, RoHS compliant, 324-ball TFBGA package with 0.8 mm ball pitch and surface-mount mounting type.

Typical Applications

• Human-Machine Interfaces (HMIs) — Drives TFT/STN displays and resistive touchscreens for operator panels and control terminals.
• Networked Embedded Systems — Provides Ethernet and high-speed USB plus mass storage interfaces for gateways, routers and data loggers requiring robust connectivity.
• Imaging and Multimedia Devices — Integrates camera interface, AC'97 audio and display controllers for embedded imaging terminals and multimedia kiosks.
• Memory-Intensive Embedded Products — Supports DDR2, LPDDR and NAND Flash with ECC for applications that need large local storage or fast external memory access.

Unique Advantages

• Highly integrated peripheral set: On-chip display controller, camera interface, AC'97 audio, Ethernet, USB and SDIO reduce external component count and simplify system design.
• Deterministic data throughput: 133 MHz multi-layer AHB bus with 37 DMA channels and dual external bus interface enables efficient data movement between peripherals and memory.
• Flexible memory options: Native support for DDR2/LPDDR/SDRAM/LPSDR, static memories and SLC NAND Flash with ECC provides design flexibility across cost and performance points.
• Industrial temperature rating: −40 °C to 85 °C operation suitable for industrial embedded deployments.
• Power-aware features: Integrated power management with clock gating and battery backup support lower power consumption in active and standby modes.
• Compact, manufacturable package: 324-TFBGA with 0.8 mm ball pitch supports lower-cost PCB manufacturing and a compact system footprint.

Why Choose AT91SAM9G45B-CU?

The AT91SAM9G45B-CU delivers a balanced combination of processor performance, peripheral integration and industrial-grade reliability for embedded designs that require rich user interfaces and high data-rate connectivity. Its ARM926EJ-S core at 400 MHz, extensive memory interface support and broad peripheral set make it a suitable foundation for HMIs, networked controllers and multimedia-enabled embedded systems.

Engineers seeking to reduce BOM complexity while retaining flexible memory and interface choices will find the AT91SAM9G45B-CU well suited to applications that demand sustained data throughput, display and imaging capabilities, and operation across a wide temperature range.

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