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AT90USB82 データシート(PDF) 39 Page - ATMEL Corporation

部品番号 AT90USB82
部品情報  8-bit Microcontroller with 8/16K Bytes of ISP Flash
PDF  306 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB82 データシート(HTML) 39 Page - ATMEL Corporation

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39
7707D–AVR–07/08
AT90USB82/162
7.
Power Distribution
The AT90USB82/162 product includes an internal 5V to 3.3V regulator that
allows to supply the USB pad (see Figure 7-1.) and, depending on the applica-
tion, external components or even the microcontroller itself (see Figure 7-2.).
Figure 7-1.
5V configuration
Figure 7-2.
5V / 3.3V configuration
USB Pad
PS/2 Pad
AVR Core
I/O
3.3V Reg
Comparator
UVSS
VSS
UVCC
UCAP
VCC
VBus or PS/2 Vcc (5V)
Band
Gap
POR
BOD
PLL
AVCC
USB or PS/2 connector
USB Pad
PS/2 Pad
AVR Core
I/O
3.3V Reg
Comparator
UVSS
VSS
UVCC
UCAP
VCC
VBus or PS/2 Vcc (5V)
Band
Gap
POR
BOD
PLL
AVCC
USB or PS/2 connector
at least 50 mA
for external chips
(3.3V)



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