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SED1520 Series
EPSON 2–23
SED1520
Series
AC Characteristics
• MPU Bus Read/Write I (80-family MPU)
Ta = –20 to 75 deg. C, VSS = –5.0 V ±10% unless stated otherwise
Rating
Parameter Symbol Condition Unit Signal
Min. Max.
Address hold time tAH8 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 —90ns
C
L = 100 pF
Output disable time t
CH8 10 60 ns
Rise and fall time t
r, tf — — 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, tf — — 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