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AT43USB326 датащи(PDF) 78 Page - ATMEL Corporation

номер детали AT43USB326
подробное описание детали  Multimedia USB Keyboard Controller with Embedded Hub
PDF  102 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB326 датащи(HTML) 78 Page - ATMEL Corporation

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78
AT43USB326
3313D–USB–04/06
Note:
XTAL2 must not be used to drive other circuitry.
Note:
1. With external 27
Ω series resistor.
Figure 13. Full-speed Load
Table 17. Oscillator Signals: XTAL1, XTAL2
Symbol
Parameter
Condition
Min
Max
Unit
VLH
OSC1 switching level
0.47
1.20
V
V
HL
OSC1 switching level
0.67
1.44
V
CX1
Input capacitance, XTAL1
10
pF
CX2
Output capacitance, XTAL2
10
pF
C12
OSC1/2 capacitance
5
pF
tSU
Start-up time
6 MHz, fundamental
2
ms
DL
Drive level
50
µW
Table 18. USB Driver Characteristics, Full-speed Operation
Symbol
Parameter
Condition
Min
Max
Unit
TR
Rise time
CL = 50 pF
4
20
ns
TF
Fall time
CL = 50 pF
4
20
ns
TRFM
TR/TF matching
90
110
%
ZDRV
Driver output resistance(1)
Steady state drive
28
44
Ω
TxD+
TxD-
R
S
R
S
C
L
C
L
C
L = 50 pF



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