SAM7X512 查看數據表（PDF） - Atmel Corporation

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SAM7X512

AT91SAM ARM-based Flash MCU

Atmel Corporation 

SAM7X512/256/128 Summary

1. Description

Atmel's SAM7X512/256/128 is a member of a series of highly integrated Flash microcontrollers

based on the 32-bit ARM RISC processor. It features 512/256/128 Kbytes 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 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 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 SAM7X512/256/128 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.

1.1 Configuration Summary of the SAM7X512/256/128

The SAM7X512, SAM7X256 and SAM7X128 differ only in memory sizes. Table 1-1 summarizes

the configurations of the three devices.

Table 1-1. Configuration Summary

Device

SAM7X512

SAM7X256

SAM7X128

Flash

512 Kbytes

256 Kbytes

128 Kbytes

Flash

Organization

dual plane

single plane

single plane

SRAM

128 Kbytes

64 Kbytes

32 Kbytes

3

6120GS–ATARM–07-Apr-11

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