AT91SAM9261 概述

The AT91SAM9261 is an ultra low-power, deterministic microcontroller based on the ARM926EJ-S processor, with 16K byte instruction and 16K byte data cache memories. It operates at 210 MIPS with a 190 MHz clock. The AT91SAM9261 features 160K bytes of SRAM and 32K bytes of ROM with single cycle access at maximum processor or bus speed, together with an external bus interface with controllers for SDRAM and static memories including NAND Flash and CompactFlash.

The AT91SAM9261 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 AT91SAM9261's throughput and the DSP extensions to its instruction set allow complex DSP functions, such as biometrics, voice recognition, software modems, or encryption/decryption algorithms like RSA, to be executed very quickly in burst mode, so the system can be shut down much of the time. The AT91SAM9261 consumes only 2.5 uA in standby mode, and 400 uA at 500 Hz. In industrial temperature range, its current consumption at 200 MIPS with all peripherals turned on is just 65 mA. It is supplied in a 217-ball LFBGA RoHS-compliant package.

The AT91SAM9261 is supported by the AT91SAM9261 Evaluation Board and extensive third-party application development tools. It supports both Linux and Windows CE. The AT91SAM9261 is targeted at low power, high throughput wireless handheld applications, such as wireless PoS devices.