cp3ub17 National Semiconductor Corporation, cp3ub17 Datasheet - Page 189
cp3ub17
Manufacturer Part Number
cp3ub17
Description
Reprogrammable Connectivity Processor With Usb Interface
Manufacturer
National Semiconductor Corporation
Datasheet
1.CP3UB17.pdf
(202 pages)
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26.11
26.12
Symbol
Symbol
T
V
Z
t
t
T
RFM
TAH
T
CRS
DRV
TAL
a. Waveforms measured at 10% to 90%.
R
F
USB PORT AC CHARACTERISTICS
MULTI-FUNCTION TIMER (MFT) TIMING
Rise Time
Fall Time
Fall/Rise Time Matching (T
Output Signal Crossover Voltage
Driver Output Impedance
Figur
77
77
e
TA High Time
TA Low Time
Description
TA/TB
CLK
Description
Figure 77. Multi-Function Timer Input Timing
Table 61 Multi-Function Timer Input Signals
R
/T
F
t
TAL
)
/t
TBL
Table 60 USB Port Signals
C
C
C
C
C
L
L
L
L
L
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
Conditions
Rising Edge (RE) on CLK
RE on CLK
189
Reference
t
TAL
/t
a
TBH
Min
1.3
90
28
4
4
Min (ns)
T
T
DS169
CLK
CLK
Typ
+ 5
+ 5
Max
110
2.0
20
20
43
www.national.com
Max (ns)
Units
ohms
ns
ns
%
V
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