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° 6800-Family Interface Timing
E
R/W
AO, CS
D0 to D7
(Write)
D0 to D7
(Read)
tCYC
tAW6
tEW
tAH6
tDH6
tDS6
tOH6
tACC6
Note: tCYC6 indicates the interval during which CS is LOW and E is HIGH.
Signal
Symbol
Parameter
VDD = 4.5 to 5.5V
VDD = 3.0 to 4.5V
Unit
Condition
min
max
min
max
A0,
tCYC6
System cycle time
See note
—
See note
—
ns
CS,
tAW6
Address setup time
0
—
10
—
ns
R/W
tAH6
Address hold time
0
—
0
—
ns
tDS6
Data setup time
100
—
120
—
ns
CL =
D0 to D7
tDH6
Data hold time
0
—
0
—
ns
100 pF
tOH6
Output disable time
10
50
10
70
ns
tACC6
Access time
—
85
—
120
ns
EtEW
Enable pulsewidth
120
—
140
—
ns
Ta = –20 to 75
°C
Note: For memory control and system control commands:
tCYC6 = 2tC + tEW + tCEA + 75 > tACV + 245
For all other commands:
tCYC6 = 4tC + tEW + 30
SED1336
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