Datasheet Microchip AT91SAM7X256 — Ficha de datos

ARM7TDMI
(Rev 3) Technical Reference Manual Copyright В© 1994-2001. All rights reserved.
ARM DDI 0029G ARM7TDMI
Technical Reference Manual
Copyright В© 1994-2001. All rights reserved.
Release Information
Change history
Date Issue Change October 1994 A Released. December 1994 B First formal release. December 1994 C Review comments added. March 1995 D Technical changes. August 1995 E Review comments added. November 2000 F SGML, new layout, new title, incorporation of errata, and technical changes. April 2001 G Addition of timing parameters and editorial changes. Proprietary Notice
Words and logos marked with В® or в„ў are registered trademarks or trademarks owned by ARM Limited. Other
brands and names mentioned herein may be the trademarks of their respective owners.
Neither the whole nor any part of the information contained in, or the product described in, this document
may be adapted or reproduced in any material form except with the prior written permission of the copyright
holder.
The product described in this document is subject to continuous developments and improvements. All
particulars of the product and its use contained in this document are given by ARM in good faith. However,
all warranties implied or expressed, including but not limited to implied warranties of merchantability, or
fitness for purpose, are excluded.
This document is intended only to assist the reader in the use of the product. ARM Limited shall not be liable
for any loss or damage arising from the use of any information in this document, or any error or omission in
such information, or any incorrect use of the product.
Figure B-2 on page B-5 reprinted with permission IEEE Std 1149.1-1990. IEEE Standard Test Access Port
and Boundary Scan Architecture Copyright 1994-2001, by IEEE. The IEEE disclaims any responsibility or
liability resulting from the placement and use in the described manner. ii Copyright В© 1994-2001. All rights reserved. ARM DDI 0029G Confidentiality Status …

ARM-based Flash MCU
SAM7X512 / SAM7X256 / SAM7X128
DATASHEET Description
The Atmel SAM7X512/256/128 is a highly-integrated Flash microcontroller based on
the 32-bit ARMВ® RISC processor. It features 512/256/128 Kbytes of high-speed Flash
and 128/64/32 Kbytes of 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. Builtin lock bits and a security bit protect the firmware from accidental overwrite and
preserve its confidentiality.
The SAM7X512/256/128 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 ARM7TDMIВ® 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
SAM7X512/256/128 is a powerful device that provides a flexible, cost-effective solution
to many embedded control applications requiring communication over Ethernet, wired
CAN and ZigBee® wireless networks. 6120K–ATARM–11-Feb-14 Features
пЃ¬ Incorporates the ARM7TDMI ARM ThumbВ® Processor
пЃ¬ High-performance 32-bit RISC Architecture …