SED1520 Series
EPSON
2–23
SED1520
Series
AC Characteristics
• MPU Bus Read/Write I (80-family MPU)
Ta = –20 to 75 deg. C, V
SS
= –5.0 V
±
10% unless stated otherwise
Rating
Parameter
Symbol
Condition
Unit
Signal
Min.
Max.
Address hold time
t
AH8
10
—
ns
A0, CS
Address setup time
t
AW8
20
—
ns
System cycle time
t
CYC8
1000
—
ns
WR, RD
Control pulsewidth
t
CC
200
—
ns
Data setup time
t
DS8
80
—
ns
Data hold time
t
DH8
10
—
ns
D0 to D7
RD access time
t
ACC8
—
90
ns
C
L
= 100 pF
Output disable time
t
CH8
10
60
ns
Rise and fall time
t
r
, t
f
—
—
15
ns
—
(V
SS
= –2.7 to –4.5 V, Ta = –20 to +75
°
C)
Rating
Parameter
Symbol
Condition
Unit
Signal
Min.
Max.
Address hold time
t
AH8
20
—
ns
—
A0, CS
Address setup time
t
AW8
40
—
ns
System cycle time
t
CYC8
2000
—
ns
—
WR, RD
Control pulse width
t
CC
400
—
ns
Data setup time
t
DS8
160
—
ns
—
Data hold time
t
DH8
20
—
ns
D0 to D7
RD access time
t
ACC8
—
180
ns
C
L
= 100 pF
Output disable time
t
CH8
20
120
ns
Rise and fall time
t
r
, t
f
—
—
15
ns
—
t
CC
t
CYC8
t
AW8
A0,CS
WR,RD
D0 to D7
(WRITE)
D0 to D7
(READ)
t
f
t
r
t
DS8
t
AH8
t
DH8
t
OH8
t
ACC8