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AT91SAM7X128 Datasheet(PDF) 3 Page - ATMEL Corporation |
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AT91SAM7X128 Datasheet(HTML) 3 Page - ATMEL Corporation |
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3 / 664 page  3 6120D–ATARM–02-Feb-06 AT91SAM7X256/128 Preliminary 1. Description Atmel's AT91SAM7X256/128 is a member of a series of highly integrated Flash microcontrollers based on the 32-bit ARM RISC processor. It features 256/128 Kbyte high-speed Flash and 64/32 Kbyte SRAM, a large set of peripherals, including an 802.3 Ethernet MAC and a CAN con- troller. 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 secu- rity bit protect the firmware from accidental overwrite and preserve its confidentiality. The AT91SAM7X256/128 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 AT91SAM7X256/128 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. 2. Configuration Summary of the AT91SAM7X256 and AT91SAM7X128 The AT91SAM7X256 and AT91SAM7X128 differ only in memory sizes. Table 2-1 summarizes the configurations of the two devices. Table 2-1. Configuration Summary Device Flash SRAM AT91SAM7X256 256K bytes 64K bytes AT91SAM7X128 128K bytes 32K bytes |
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