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DOC7707 Datasheet(PDF) 184 Page - List of Unclassifed Manufacturers

Part # DOC7707
Description  Microcontroller with 8/16K Bytes of ISP Flash and USB Controller
PDF  307 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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DOC7707 Datasheet(HTML) 184 Page - List of Unclassifed Manufacturers

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184
7707F–AVR–11/10
AT90USB82/162
Figure 19-1. USB controller Block Diagram overview
19.3
Typical Application Implementation
Depending on the target application power supply, the AT90USB82/162 requires different hard-
ware typical implementations.
Figure 19-2. Operating modes versus frequency and power-supply
CPU
Regulator
USB
Interface
PLL
6x
clk
8MHz
clk
48MHz
PLL clock
Prescaler
On-Chip
USB DPRAM
DPLL
Clock
Recovery
UCAP
D-
D+
UVCC
XTAL1
VCC (V)
VCC min
0
3.0
4.0
5.5
USB not operational
USB compliant,
without internal regulator
USB compliant,
with internal regulator
4.5
2.7
Max
Operating Frequency (MHz)
8 MHz
16 MHz
2 MHz
3.6



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