Description
Atmels AT91SAM7X512/256/128 is a member of a series of highly
integrated Flash microcontrollers based on the 32-bit ARM RISC
processor. It features 512/256/128 Kbyte high-speed Flash and
128/64/32 Kbyte SRAM, a large set of peripherals, including an
802.3 Ethernet MAC and a CAN controller. A complete set of system
functions minimizes the number of external components.
The embedded Flash memory can be programmed in-system via the
JTAG-ICE interface or via a parallel interface on a production
programmer prior to mounting. Built-in lock bits and a security bit
protect the firmware from accidental overwrite and preserve its
confidentiality.
The AT91SAM7X512/256/128 system controller includes a reset
controller capable of managing the power-on sequence of the
microcontroller and the complete system. Correct device operation
can be monitored by a built-in brownout detector and a watchdog
running off an integrated RC oscillator.
By combining the ARM7TDMI processor with on-chip Flash and SRAM,
and a wide range of peripheral functions, including USART, SPI, CAN
Controller, Ethernet MAC, Timer Counter, RTT and Analog-to-Digital
Converters on a monolithic chip, the AT91SAM7X512/256/128 is a
powerful device that provides a flexible, cost-effective solution
to many embedded control applications requiring communication over,
for example, Ethernet, CAN wired and Zigbee™ wireless networks.
