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34.2 Nonmultiplexed Bus AC Characteristics
AC CHARACTERISTICS–NONMULTIPLEXED PARALLEL PORT (MUX = 0)
(0°C to +70°C; V
DD
= 3.3V ± 5% for DS21Q55;
-40°C to +85°C; V
DD
= 3.3V ± 5% for DS21Q55N)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Setup Time for A0 to A7, Valid to
CS* Active
t1 0 ns
Setup Time for CS* Active to
Either RD*, WR*, or DS* Active
t2 0 ns
Delay Time From Either RD* or
DS* Active to Data Valid
t3 75 ns
Hold Time From Either RD*,
WR*, or DS* Inactive to CS*
Inactive
t4 0 ns
Hold Time From CS* Inactive to
Data Bus 3-state
t5 5 20 ns
Wait Time from Either WR* or
DS* Activate to Latch Data
t6 75 ns
Data Setup Time to Either WR*
or DS* Inactive
t7 10 ns
Data Hold Time from Either WR*
or DS* Inactive
t8 10 ns
Address Hold from Either WR*
or DS* Inactive
t9 10 ns
See Figures 37-4 to 37-7