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AT91SAM7XC128B-CU Datasheet(PDF) 4 Page - ATMEL Corporation |
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AT91SAM7XC128B-CU Datasheet(HTML) 4 Page - ATMEL Corporation |
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4 / 47 page  4 6209DS–ATARM–17-Feb-09 AT91SAM7XC512/256/128 Preliminary 1. Description Atmel's AT91SAM7XC512/256/128 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, a CAN controller, an AES 128 Encryption accelerator and a Triple Data Encryption System. 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 AT91SAM7XC512/256/128 system controller includes a reset controller capable of manag- ing 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 inte- grated 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, AES 128 accelera- tor, TDES, Timer Counter, RTT and Analog-to-Digital Converters on a monolithic chip, the AT91SAM7XC512/256/128 is a powerful device that provides a flexible, cost-effective solution to many embedded control applications requiring secure communication over, for example, Ethernet, CAN wired and Zigbee ™ wireless networks. 1.1 Configuration Summary of the AT91SAM7XC512/256/128 The AT91SAM7XC512, AT91SAM7XC256 and AT91SAM7XC128 differ only in memory sizes. Table 1-1 summarizes the configurations of the two devices. Table 1-1. Configuration Summary Device Flash Flash Organization SRAM AES TDES AT91SAM7XC512 512K bytes dual plane 128K bytes 1 AES 256/192/128 1 AT91SAM7XC256 256K bytes single plane 64K bytes 1 AES 128 1 AT91SAM7XC128 128K bytes single plane 32K bytes 1 AES 128 1 |
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