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AT89C5122D-RDRUM датащи(PDF) 198 Page - ATMEL Corporation

номер детали AT89C5122D-RDRUM
подробное описание детали  C51 Microcontroller with USB and Smart Card Reader Interfaces
PDF  208 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5122D-RDRUM датащи(HTML) 198 Page - ATMEL Corporation

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198
AT83R5122, AT8xC5122/23
4202F–SCR–07/2008
This diagram indicates when signals are clocked internally. The time it takes the signals
to propagate to the pins, however, ranges from 25 to 125 ns. This propagation delay is
dependent on variables such as temperature and pin loading. Propagation also varies
from output to output and component. Typically though (TA=25°C fully loaded) RD and
WR propagation delays are approximately 50 ns. The other signals are typically 85 ns.
Propagation delays are incorporated in the AC specifications.
USB Interface
Rise Time
Fall Time
VCRS
Differential
Data Lines
90%
10%
90%
10%
tR
tF
VHmin
VLmax
Symbol
Parameter
Min
Typ(5)
Max
Unit
tR
Rise Time
4
20
ns
tF
Fall Time
4
20
ns
tFDRATE
Full-speed Data Rate
11.9700
12.0300
Mb/s
VCRS
Crossover Voltage
1.3
2.0
V
tDJ1
Source Jitter Total to next transaction
-3.5
3.5
ns
tDJ2
Source Jitter Total for paired
transactions
-4
4
ns
tJR1
Receiver Jitter to next transaction
-18.5
18.5
ns
tJR2
Receiver Jitter for paired transactions
-9
9
ns



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