AT91SAM9G45-CU

The AT91SAM9G45-CU is a 32-bit microprocessor IC based on the ARM926EJ-S core running at 400 MHz. It combines a high-performance processor core with extensive on-chip peripherals and flexible memory interfaces to support embedded applications requiring user interfaces, multimedia and high-speed connectivity.

Designed for industrial use, the device integrates networking, storage and display subsystems alongside power-management features and a 324-ball TFBGA package to simplify system design and production-level assembly.

Key Features

• Core & Performance ARM926EJ-S core at 400 MHz with a Memory Management Unit (MMU), 32 KB data cache and 32 KB instruction cache for efficient code and data handling.
• Memory & Storage Interfaces On-chip DDR2 controller supporting 4-bank DDR2/LPDDR and an external bus interface for DDR2/LPDDR, SDRAM/LPSDR, static memories, CompactFlash and SLC NAND Flash with ECC. Includes one 64-KByte internal SRAM (configurable as TCM for single-cycle access) and one 64-KByte internal ROM with bootstrap routine.
• Connectivity & Multimedia Integrated 10/100 Mbps Ethernet MAC, USB Device High Speed plus USB Host High Speed and Host Full Speed with on-chip transceiver. LCD controller supports STN and TFT displays up to 1280×860 and an ITU-R BT.601/656 image sensor interface for camera input.
• Peripherals & I/O Two high-speed memory card hosts (SDIO/SDCard/MMC), AC'97 controller, multiple serial interfaces (SPI, I2S, two-wire), four USARTs (with ISO7816, IrDA, Manchester, SPI modes), timers, PWM controller and an 8-channel 10-bit ADC with 4-wire touch-screen support. Five 32-bit parallel I/O controllers provide up to 160 programmable I/O lines.
• System Architecture & DMA 133 MHz multi-layer AHB bus matrix with twelve 32-bit layers and 37 DMA channels to sustain high-bandwidth peripheral and memory transfers.
• Clocking & Boot One system PLL and one 480 MHz PLL optimized for USB, selectable 32.768 kHz and 12 MHz crystal oscillators plus an internal low-power 32 kHz RC oscillator. Boot options include NAND Flash, SDCard, DataFlash or serial DataFlash.
• Power Management & Reliability On-chip power management features including efficient clock gating and a battery backup section to minimize power consumption in active and standby modes.
• Package & Temperature 324-ball TFBGA (15×15) with 0.8 mm ball pitch, surface-mount mounting, industrial grade and operating temperature range of −40 °C to 85 °C.

Typical Applications

• Human-Machine Interfaces (HMI) — Drives STN/TFT displays up to 1280×860 with touchscreen support for control panels and operator interfaces.
• Industrial Networking & Control — 10/100 Mbps Ethernet and multiple I/O lines for networked automation, monitoring and control systems operating across −40 °C to 85 °C.
• Imaging and Vision Systems — ITU-R BT.601/656 image sensor interface and high-bandwidth memory support for camera capture and preprocessing.
• Embedded Multimedia Devices — Integrated audio (AC'97), I2S, USB and display controllers for media players and interactive appliances.
• Flash-based Storage and Boot Solutions — Native support for NAND, SDCard and DataFlash with on-chip controllers and ECC for local storage and booting.

Unique Advantages

• Highly integrated connectivity: On-chip Ethernet, USB host/device and dual SD/MMC hosts reduce external components and simplify board design.
• Flexible memory support: Native DDR2/LPDDR controller plus external bus and NAND/CompactFlash interfaces enable a wide range of memory configurations and storage options.
• Deterministic processor performance: ARM926EJ-S at 400 MHz with MMU and dedicated caches supports responsive embedded applications requiring real-time interaction.
• Rich multimedia and sensor interfaces: LCD controller, image sensor interface and audio peripherals consolidate display, camera and audio subsystems on-chip.
• Industrial-ready packaging and temperature range: 324-TFBGA with 0.8 mm pitch and −40 °C to 85 °C rating supports production assembly and deployment in industrial environments.
• High-bandwidth system architecture: 133 MHz multi-layer AHB bus and 37 DMA channels sustain simultaneous data flows between peripherals and memory.

Why Choose AT91SAM9G45-CU?

The AT91SAM9G45-CU delivers a balanced combination of processor performance, peripheral integration and flexible memory interfaces for embedded designs that require user interfaces, multimedia and high-speed connectivity. Its ARM926EJ-S core with caches and MMU, together with on-chip Ethernet, USB and display subsystems, reduces external component count while providing predictable system throughput.

This industrial-grade device is suited for engineering teams building networked, display-driven or storage-enabled products that need scalable memory options, diverse peripheral support and production-ready packaging across a wide operating temperature range.

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