Specifications
CLOCK*
MCSYNC*
A0-A15
IOEXP
MEMEX
STATUS 0*
STATUS 1*
IORQ*
MEMRQ*
VALID
VALID
VALID
VALID
T
T
T /T
T
tW1
tW7
tW2
tW8
tW3
tW9
1
2
3
W
4
tD2
tW4
tD3
tD4
tD5
tD6
tH3
tH2
tH1
tH4
tD1
8808A
8809A
88CT08A
SYMBOL
PARAMETER
88CT09A
tD1
tD2
tD3
tD4
tD5
tD6
tH1
tH2
tH3
tH4
tW4
Delay from CLOCK * to MCSYNC* low
Delay from CLOCK* to MCSYNC* high
Delay from CLOCK* to Address 0-15, MEMEX, IOEXP
Delay from CLOCK* to STATUS
Delay from CLOCK* to IORQ*
Delay from CLOCK* to MEMRQ*
STATUS* hold after CLOCK*
IORQ* hold after CLOCK*
MEMRQ* hold after CLOCK*
Address 0-15, MEMEX, IOEXP, hold after CLOCK*
MCSYNC* pulse width
MIN MAX
MAX
MAX
MAX
MIN
MIN
MIN
1
7
68
68
68
73
85
71
25
118
68
105
59
1
7
43
43
43
48
60
46
25
68
43
80
34
0
3
57
57
57
69
79
81
26
125
67
67
54
0
3
32
32
32
44
74
56
26
75
42
42
29
Figure B–9. ZT 8809A Status Timing.
B-24
