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AT90USB646 Datasheet(PDF) 242 Page - ATMEL Corporation

Part # AT90USB646
Description  8-bit Atmel Microcontroller with 64/128Kbytes of ISP Flash and USB Controller
PDF  456 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB646 Datasheet(HTML) 242 Page - ATMEL Corporation

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242
7593L–AVR–09/12
AT90USB64/128
22.3
Typical application implementation
Depending on the USB operating mode (Device only, Reduced Host or OTG mode) and on the
target application power supply, the Atmel AT90USB64/128 require different hardware typical
implementations.
Figure 22-2. Operating modes versus frequency and power-supply.
22.3.1
Device mode
22.3.1.1
Bus powered device
Figure 22-3. Typical bus powered application with 5V I/O.
VCC (V)
VCC min
0
3.0
3.4
5.5
USB not operational
USB compliant,
without internal regulator
USB compliant,
with internal regulator
4.5
2.7
Maximum
operating frequency [MHz]
8MHz
16MHz
2MHz
3.6
1µF
UDP
UDM
VBUS
UVSS
UID
UCAP
D-
D+
VBUS
UID
UGND
UVCC
AVCC
VCC
XTAL1
XTAL2
GND
GND
Rs = 22
Rs = 22



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