SED1330
° System Bus READ/WRITE Timing II (6800)
E
R/W
A0, CS
D0~D7
(WRITE)
D0~D7
(READ)
tCYC6
tAW6
tEW
tDS6
tACC6
tAH6
tDH6
tOH6
Signal
Parameter
A0, CS, R/W
D0 to D7
E
System cycle time
Address setup time
Address hold time
Data setup time
Data hold time
Output disable time
Access time
Enable pulse width
Symbol
tCYC6*1
tAW6
tAH6
tDS6
tDH6
tOH6
tACC6
tEW
Rating
Min
Max
*2
—
30
—
10
—
120
—
10
—
10
50
—
120
220
—
Unit
Remark
ns
ns
ns
ns CL = 100 pF
ns
+ 1 TTL
ns
ns
ns
*1. tCYC6 means a cycle of (CS.E) not E alone.
*2. tCYC6 = 2tc + tEW + tCEA + 75 > tACV + 245 .............. Memory control/movement control commands.
= 4tC + tEW + 30 ............................................ All other commands.
130