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AT91SAM7S64 Scheda tecnica(PDF) 13 Page - ATMEL Corporation

Il numero della parte AT91SAM7S64
Spiegazioni elettronici  AT91 ARM Thumb-based Microcontrollers
PDF  50 Pages
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Produttore elettronici  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT91SAM7S64 Scheda tecnica(HTML) 13 Page - ATMEL Corporation

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6175GS–ATARM–24-Dec-08
AT91SAM7S Series Summary
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability
and reduce source voltage drop. The input decoupling capacitor should be placed close to the
chip. For example, two capacitors can be used in parallel: 100 nF NPO and 4.7 µF X7R.
5.4
Typical Powering Schematics
The AT91SAM7S Series supports a 3.3V single supply mode. The internal regulator is 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
Power Source
ranges
from 4.5V (USB)
to 18V
3.3V
VDDIN
Voltage
Regulator
VDDOUT
VDDIO
DC/DC Converter
VDDCORE
VDDFLASH
VDDPLL



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