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AT91SAM7X512-AU Datasheet(PDF) 3 Page - ATMEL Corporation |
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AT91SAM7X512-AU Datasheet(HTML) 3 Page - ATMEL Corporation |
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3 / 45 page  3 6120ES–ATARM–08-Oct-07 AT91SAM7X512/256/128 Preliminary Summary 1. Description Atmel's AT91SAM7X512/256/128 is a member of a series of highly integrated Flash microcon- trollers 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 secu- rity 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 opera- tion 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 power- ful 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. 1.1 Configuration Summary of the AT91SAM7X512/256/128 The AT91SAM7X512, AT91SAM7X256 and AT91SAM7X128 differ only in memory sizes. Table 1-1 summarizes the configurations of the three devices. Table 1-1. Configuration Summary Device Flash Flash Organization SRAM AT91SAM7X512 512 Kbytes dual plane 128 Kbytes AT91SAM7X256 256 Kbytes single plane 64 Kbytes AT91SAM7X128 128 Kbytes single plane 32 Kbytes |
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