
HYUNDAI MicroElectronics
64
4.5.3. Microprocessor Mode I/O Timing
( Vdd = 5.0V
±
10%, Vss = 0
, Ta = -20
85
,f (Xin) = 8
)
Parameter Pin Symbol Unit SPECIFICATION etc
MIN. TYP. MAX.
Control Clock Output Width C tCL ns 90 -
Address Output Delay Time A0 ~ A15 tdCA ns - 80
Data Output Delay Time D0 ~ D7 tdCD ns - 180
Data Output Hold Time D0 ~ D7 thw ns - 20
Data Input Setup Time D0 ~ D7 tsuR ns 80 -
Data Input Hold Time D0 ~ D7 thR ns 15 -
Rd Output Delay Time Rd tdRd tsys - 90
Wt Output Delay Time Wt tdWt tsys - 130
R/W Output Delay Time R/W tdRW tsys - 50
sync Output Delay Time SYNC tdsync tsys - 50
Timing Chart
tsys
tcw tcw
0.8Vdd 0.8Vdd
0.2Vdd
0.2Vdd
tdCA
tdCD
tstR
tdRd
tdWt
tdRW
0.8Vdd
0.2Vdd
tdsync
0.8Vdd
0.2Vdd
thR
thW
0.2Vdd
0.2Vdd
0.8Vdd
0.2Vdd
C
A0~A15
write mode
D0~D7
read mode
D0~D7
Rd
Wt
R/W
SYNC