Datasheet

DS2155
227 of 238
37.2 Nonmultiplexed Bus AC Characteristics
AC CHARACTERISTICS: NONMULTIPLEXED PARALLEL PORT (MUX = 0)
(Figure 37-4, Figure 37-5, Figure 37-6, and Figure 37-7)
(V
DD
= 3.3V ±5%, T
A
= 0°C to +70°C for DS2155L; V
DD
= 3.3V ±5%, T
A
= -40°C to +85°C; for DS2155LN.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
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
Tri-State
t5 5 20 ns
Wait Time from Either WR or DS Active
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