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WP2002A-Y-JCS Datasheet, PDF (14/18 Pages) DB Lectro Inc – WP2002A-Y-JCS | |||
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12.2 Read Operation
RS
R/W
E
DB0 to DB7
VIH1
VIL1
tAS
VIH1
VIL1
tAH
VIH1
VIH1
PWEH
tAH
tEf
VIH1
VIH1
VIL1
VIL1
VIL1
t t Er
DDR
tDHR
VOH1
VOL1*
Valid data
tcycE
VOH1
*VOL1
NOTE: *VOL1 is assumed to be 0.8V at 2 MHZ operation.
Ta=25â, VDD=5.0± 0.5V
Item
Symbol Min Typ Max
Unit
Enable cycle time
tcycE
500
ï¼
ï¼
ns
Enable pulse width (high level)
PWEH
230
ï¼
ï¼
ns
Enable rise/fall time
tEr,tEf
ï¼
ï¼
20
ns
Address set-up time (RS, R/W to E) tAS
40
ï¼
ï¼
ns
Address hold time
tAH
10
ï¼
ï¼
ns
Data delay time
tDDR
ï¼
ï¼
160
ns
Data hold time
tDHR
5
ï¼
ï¼
ns
第 14 é ï¼å
± 18 é
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