AT91SAM7S256 ATMEL Corporation, AT91SAM7S256 Datasheet - Page 9
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AT91SAM7S256
Manufacturer Part Number
AT91SAM7S256
Description
AT91 ARM THUMB-BASED MICROCONTROLLERS
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM7S256.pdf
(32 pages)
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Typical Powering
Schematics
6117AS–ATARM–20-Oct-04
The AT91SAM7S256 supports a 3.3V single supply mode. The internal regulator input
connected to the 3.3V source and its output feeds VDDCORE and the VDDPLL. Figure
3 shows the power schematics to be used for USB bus-powered systems.
Figure 3. 3.3V System Single Power Supply Schematic
AT91SAM7S256 Summary Preliminary
from 4.5V (USB)
Power Source
ranges
to 18V
DC/DC Converter
3.3V
VDDFLASH
VDDCORE
VDDOUT
VDDPLL
VDDIO
VDDIN
Regulator
Voltage
9