SAM7X512 查看數據表（PDF） - Atmel Corporation

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SAM7X512

AT91SAM ARM-based Flash MCU

Atmel Corporation 

5.4 Typical Powering Schematics

The SAM7X512/256/128 supports a 3.3V single supply mode. The internal regulator input con-

nected to the 3.3V source and its output feeds VDDCORE and the VDDPLL. Figure 5-1 shows

the power schematics to be used for USB bus-powered systems.

Figure 5-1. 3.3V System Single Power Supply Schematic

VDDFLASH

Power Source

ranges

from 4.5V (USB)

to 18V

DC/DC Converter

3.3V

VDDIO

VDDIN

VDDOUT

Voltage

Regulator

VDDCORE

VDDPLL

12 SAM7X512/256/128 Summary

6120GS–ATARM–07-Apr-11

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