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AT91SAM7X256 Datasheet(PDF) 3 Page - ATMEL Corporation

No. de Pieza. AT91SAM7X256
Descripción  AT91 ARM Thumb-based Microcontrollers
Descarga  664 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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AT91SAM7X256 Datasheet(HTML) 3 Page - ATMEL Corporation

 
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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 Zigbeewireless
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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