
LH155BA
45
(68-family MPU Timing Characteristics)
PARAMETER
Address hold time
Address setup time
System cycle time
Enable pulse width (READ)
Enable pulse width (WRITE)
Data setup time
Data hold time
Read data output delay time
Read data hold time
Input signal rise and fall time
(V
DD
= 2.7 to 5.5 V, T
OPR
= –30 to +85 C)
APPLICABLE PINS
CSB
RS
SYMBOL
t
AH6
t
AS6
t
CYC6
CONDITIONS
MIN.
60
40
450
270
100
100
40
MAX.
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
E
t
EW6
t
DS6
t
DH6
t
RDD6
t
RDH6
t
R
, t
F
D
7
-D
0
C
L
= 15 pF
D
7
-D
0
220
10
All of above pins
15
(V
DD
= 2.4 to 2.7 V, T
OPR
= –30 to +85 C)
APPLICABLE PINS
CSB
RS
(V
DD
= 1.8 to 2.4 V, T
OPR
= –30 to +85 C)
APPLICABLE PINS
CSB
RS
PARAMETER
SYMBOL
t
AH6
t
AS6
t
CYC6
CONDITIONS
MIN.
80
80
900
500
200
200
80
MAX.
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Address hold time
Address setup time
System cycle time
Enable pulse width (READ)
Enable pulse width (WRITE)
Data setup time
Data hold time
Read data output delay time
Read data hold time
Input signal rise and fall time
E
t
EW6
t
DS6
t
DH6
t
RDD6
t
RDH6
t
R
, t
F
D
7
-D
0
C
L
= 15 pF
D
7
-D
0
320
10
All of above pins
30
PARAMETER
SYMBOL
t
AH6
t
AS6
t
CYC6
CONDITIONS
MIN.
160
160
1 800
1 000
400
400
160
MAX.
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Address hold time
Address setup time
System cycle time
Enable pulse width (READ)
Enable pulse width (WRITE)
Data setup time
Data hold time
Read data output delay time
Read data hold time
Input signal rise and fall time
NOTE :
All the timings must be specified relative to 20% and 80% of V
DD
voltage.
E
t
EW6
t
DS6
t
DH6
t
RDD6
t
RDH6
t
R
, t
F
D
7
-D
0
C
L
= 15 pF
D
7
-D
0
640
10
All of above pins
30