Atmel SAM9G45 32位MCU开发方案
Atmel公司的SAM9G45是基于ARM926EJ-S的32位MCU，集成了LCD控制器，电阻型触摸屏，照相机接口，音频，以太网10/100和高速USB与SDIO。处理器工作频率400MHz和具有多个100+Mbps数据速率外设，主要用在工业和建筑物控制，HVAC，POS终端，打印机和医疗设备，带数据集中器的智能电网，人机接口（HMI）和机-机接口（M2M）。本文介绍了SAM9G45主要特性，方框图，系统控制器框图和评估板SAM9G45-EKES主要特性，架构图，电路图和元件布局图。
The ARM926EJ-S based SAM9G45 features the frequently demanded combination of user interface functionality and high data rate connectivity, including LCD Controller, resistive touchscreen, camera interface, audio, Ethernet 10/100 and high speed USB and SDIO. With the processor running at 400MHz and multiple 100+ Mbps data rate peripherals, the SAM9G45 has the performance and bandwidth to the network or local storage media to provide an adequate user experience.
The SAM9G45 supports DDR2 and NAND Flash memory interfaces for program and data storage.
An internal 133 MHz multi-layer bus architecture associated with 37 DMA channels, a dual external bus interface and distributed memory including a 64-KByte SRAM which can be configured as a tightly coupled memory (TCM) sustains the high bandwidth required by the processor and the high speed peripherals.
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