UPD72012 View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
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UPD72012 Datasheet PDF : 36 Pages
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(4) Device event timing
Parameter
Symbol
Conditions
Time from internal power becoming
effective until device pulls D+/D–
above VIHZ (MIN.) (signal attach)
tSIGATT
Time for USB system software to
perform debounce after attach
tATTDB
Time for which bus is continuously in
idling state, maximum time device
draws more power than suspend
power
t2SUSP
Maximum value of average suspend tSUSAVGI
time
Period to drive upstream on resume tDRSMUP
Resume restore period
tRSMRCY
Supplied by USB system
software
Time to detect reset from upstream tDETRST
Same as tURLSE0
Reset restore time
tRSTRCY
Inter-packet delay
tIPD
Inter-packet delay of device
responses using detachable cable
tPDRSP1
Inter-packet delay of device
responses using captive cable
tPDRSP2
SetAddress() completion time
tDSETADDR
Time to complete standard request
without data stage
tDRQCMPLTND
Time to deliver first and subsequent
data (excluding last) for standard
request
tDRETDATA1
Time to deliver last data for standard tDRETDATAN
request
µPD72012
MIN.
TYP.
MAX.
Unit
100
ms
100
ms
10
ms
1
s
1
15
ms
10
ms
2.5
10000
µs
10
ms
2
Bit time
6.5 Bit time
7.5 Bit time
50
ms
50
ms
500
ms
50
ms
Data Sheet S13918EJ3V0DS
27
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