User Manual

DS1220AB/AD
100495 4/10
5
(V
CC
=5.0V + 10% for DS1220AD)
AC ELECTRICAL CHARACTERISTICS (t
A:
See Note 10) (V
CC
=5.0V + 5% for DS1220AB)
PARAMETER SYMBOL
DS1220AB–100
DS1220AD–100
DS1220AB–120
DS1220AD–120
UNITS NOTES
PARAMETER
SYMBOL
MIN MAX MIN MAX
UNITS
NOTES
Read Cycle Time t
RC
100 120 ns
Access Time t
ACC
100 120 ns
OE to Output Valid t
OE
50 60 ns
CE to Output Valid t
CO
100 120 ns
OE or CE to Output Active t
COE
5 5 ns 5
Output High Z from Deselec-
tion
t
OD
35 35 ns 5
Output Hold from Address
Change
t
OH
5 5 ns
Write Cycle Time t
WC
100 120 ns
Write Pulse Width t
WP
75 90 ns 3
Address Setup Time t
AW
0 0 ns
Write Recovery
Time
t
WR1
t
WR2
0
10
0
10
ns
ns
12
13
Output High Z from WE t
ODW
35 35 ns 5
Output Active from WE t
OEW
5 5 ns 4
Data Setup Time t
DS
40 50 ns 4
Data Hold Time t
DH1
t
DH2
0
10
0
10
ns
ns
12
13