AT91SAM (AT91SAM Smart ARM-based Microcontrollers) are a family of
Atmel microcontrollers based on the 32-bit RISCmicroprocessors from ARM [ [http://www.atmel.com/products/at91/ Atmel product website] ] . They include embedded Flash and SRAM memoriestogether with a number of peripheralsand standard communications and networking interfaces. This qualifies them as system-on-a-chipdevices.
External interfaces include
USB, CAN, Ethernet, SPI, USARTand ADC. A DMA controller provides direct communication channels between external interfaces and memories, increasing datathroughput with minimal processor intervention.
Peripherals include counter/timers,
power-on resetgenerators, voltage regulators and advanced interrupt controller. This enhances the real time performance of the processor. A power managementcontroller keeps power consumption to a minimum by powering down unused peripherals and interfaces, and enabling the processor to be put in standby mode.
This version of the microcontroller contains 256K of high speed flash. It also boasts of sector lock capabilities and a security bit, and 64K bytes of SRAM [ [http://www.atmel.com/dyn/products/product_card.asp?part_id=3755 AT91SAMX256 Page] ] .
* [http://www.at91.com/ Atmel AT91 ARM Microcontroller Forum]
* [http://www.timesys.com/processor/atmel.htm Atmel AT91 Embedded Linux support]
* [ftp://at91dist:email@example.com/ Atmel AT91 related ftp site]
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