Rainbow Electronics DS2152 - Manual (Page 71)

DS2152
031897 71/79
AC CHARACTERISTICS – NON–MULTIPLEXED PARALLEL
PORT (MUX=0 )
(0
°
C to 70
°
C; V
DD
=5V
±
5% for DS2152L;
–40
°
C to + 85
°
C; V
DD
=5V
±
5% for DS2152LN)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Set Up Time for A0 to A7 Valid to
CS Active t1 0 ns
Set Up 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
Active to Latch Data t6 75 ns
Data Set Up 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 t
9
10 ns
See Figures 16–10 to 16–13 for details.
INTEL BUS READ AC TIMING (BTS=0/MUX=1) Figure 16–1
ALE
WR
RD
CS
AD0-AD7
t CYC
PW ASH
PW EH
t ASD
t ASED
t ASL
t DDR
t CH
t DHR
t ASD
t CS
t AHL
PW EL