ST2202A
23.3 AC Electrical Characteristics
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FIGURE 23-1 External Read Timing Diagram
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FIGURE 23-2 External Write Timing Diagram
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TABLE 23-1 Timing parameters for FIGURE 23-1 and FIGURE 23-2
Standardꢀoperationꢀconditions:ꢀVCCꢀ=ꢀ3.0V,ꢀGNDꢀ=ꢀ0V,ꢀTAꢀ=ꢀ25
°Cꢀ
Rating
Typ.ꢀ
—ꢀ
Symbol
Characteristic
Unit
Min.ꢀ
—ꢀ
0ꢀ
Max.ꢀ
10ꢀ
—ꢀ
tSAꢀ
tHAꢀ
tWLCꢀ
tCLWLꢀ
Addressꢀsetupꢀtimeꢀ
Addressꢀholdꢀtimeꢀ
CSꢀ“L”ꢀpulseꢀwidthꢀ
nsꢀ
nsꢀ
nsꢀ
nsꢀ
—ꢀ
—ꢀ
166ꢀ
—ꢀ
—ꢀ 1/2ꢀtWLCꢀ —ꢀ
CSꢀassertedꢀto WR assertedꢀ
nsꢀ
tWHCHꢀ
tCLDHꢀ
tSDWꢀ
10ꢀ
10ꢀ
—ꢀ
—ꢀ
—ꢀ
—ꢀ
CSꢀnegatedꢀafter WR isꢀnegatedꢀ
CSꢀassertedꢀtoꢀdataꢀoutputsꢀhighꢀ
CSꢀassertedꢀtoꢀdataꢁoutꢀisꢀvalidꢀ
nsꢀ
nsꢀ
nsꢀ
—ꢀ 1/2ꢀtWLCꢀ —ꢀ
20ꢀ —ꢀ
—ꢀ 1/2ꢀtWLCꢀ —ꢀ
tHDWꢀ
ꢀ
Dataꢁoutꢀholdꢀtimeꢀafter WR isꢀnegatedꢀ
nsꢀ
nsꢀ
nsꢀ
nsꢀ
tCLRLꢀ
CSꢀassertedꢀto RD assertedꢀ
CSꢀnegatedꢀafter RD isꢀnegatedꢀ
Dataꢁinꢀvalidꢀbefore RD isꢀnegatedꢀ
Dataꢁinꢀholdꢀtimeꢀafter RD isꢀnegatedꢀ
Signalꢀriseꢀtimeꢀ
Signalꢀfallꢀtimeꢀ
tRHCHꢀ
10ꢀ
—ꢀ
—ꢀ
tSDRꢀ
tHDRꢀ
tRꢀ
30ꢀ
10ꢀ
—ꢀ
—ꢀ
—ꢀ
—ꢀ
20ꢀ
10ꢀ
—ꢀ
—ꢀ
—ꢀ
—ꢀ
nsꢀ
nsꢀ
tFꢀ
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Verꢀ2.5ꢀ
66
/75
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9/16/2008ꢀ
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
