AT91SAM9G20B-CU

SMART SAM9G ARM® 9 微处理器基于 ARM926™ 的 Atmel® SMART SAM9G 嵌入式微处理器单元 MPU 是高性能数据速度处理器，带扩展外围设备，用于连接和用户界面。### ARM 微控制器，Atmel

The is a SMART Embedded Microprocessor unit based on the integration of an ARM926EJ-S processor with fast ROM and RAM memories and a wide range of peripherals. The SAM9G20 embeds an Ethernet MAC, one USB device port and a dual port USB host controller with on-chip USB transceivers. It also integrates several standard peripherals, such as the USART, SPI, TWI, Timer counters, Synchronous Serial Controller, ADC and MultiMedia card Interface. The SAM9G20 is architectured on a 6-layer matrix, allowing a maximum internal bandwidth of six 32-bit buses. It also features an External bus interface capable of interfacing with a wide range of memory devices. The SAM9G20 is an enhancement of the SAM9260 with the same peripheral features. It is pin-to-pin compatible with the exception of power supply pins. Speed is increased to reach 400MHz on the ARM core and 133MHz on the system bus and EBI.

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Incorporates the ARM926EJ-S ARM Thumb processor

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One 64kB Internal ROM, single-cycle access at maximum matrix speed

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Two 16kB internal SRAM, single-cycle access at maximum matrix speed

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External bus interface EBI

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USB 2.0 full speed 12Mbps device port

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USB 2.0 full speed 12Mbps host double port

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Ethernet MAC 10/100 Base T

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Image sensor interface

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Bus matrix

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Reset controller RSTC

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Clock generator CKGR

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Power management controller PMC

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Advanced interrupt controller AIC

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Debug unit DBGU

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Periodic interval timer PIT

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Watchdog timer

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Real-time timer RTT

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One 4-channel 10-bit Analog-to-digital converter

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Three 32-bit Parallel I/O controllers PIOA, PIOB, PIOC

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Peripheral DMA controller channels PDC