Rainbow Electronics DS2152 - Manual (Page 68)

DS2152
031897 68/79
AC CHARACTERISTICS – MULTIPLEXED PARALLEL
PORT (MUX=1)
(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
Cycle Time t
CYC
200 ns
Pulse Width, DS low or RD high PW
EL
100 ns
Pulse Width, DS high or RD low PW
EH
100 ns
Input Rise/Fall times t
R
, t
F
20 ns
R/W Hold Time t
RWH
10 ns
R/W Set Up time before DS high t
RWS
50 ns
CS Set Up time before DS, WR or
RD active t
CS
20 ns
CS Hold time t
CH
0 ns
Read Data Hold time t
DHR
10 50 ns
Write Data Hold time t
DHW
0 ns
Muxed Address valid to AS or
ALE fall t
ASL
15 ns
Muxed Address Hold time t
AHL
10 ns
Delay time DS, WR or RD to AS
or ALE rise t
ASD
20 ns
Pulse Width AS or ALE high PW
ASH
30 ns
Delay time, AS or ALE to DS, WR
or RD t
ASED
10 ns
Output Data Delay time from DS
or RD t
DDR
20 80 ns
Data Set Up time t
DSW
50 ns
(see Figures 16–1 to 16–3 for details)