AT91SAM9G20 概述

The AT91SAM9G20 is a pin-compatible evolution of the AT91SAM9260, offering four times the cache and on-chip SRAM memory of its predecessor, and features improved error correction for external NAND Flash as well as an enlarged Ethernet FIFO that improves latency. Achieving half the power consumption at twice the clock frequency of the AT91SAM9260, it consumes only 80 mW in full-power mode with all peripherals turned on. The AT91SAM9G20 is targeted at power-constrained applications that also need high performance. These include point-of-sale terminals, building automation, security cameras and bar code readers.

The AT91SAM9G20 has a fully featured system controller for efficient system management, including a reset controller, shutdown controller, clock management, advanced interrupt controller (AIC), debug unit (DBGU), periodic interval timer, watchdog timer and real-time timer. The AT91SAM9G20 is available in a 217-ball LFBGA RoHS-compliant package.

The AT91SAM9G20 is supported by the AT91SAM9G20 Evaluation Board and extensive third-party application development tools. The AT91SAM9G20 supports both Linux and Windows CE.