Z8018x Family
MPU User Manual
195
Table 31. Z8S180 AC Characteristics (Continued) V = 5V ±10% or
DD
V
= 3.3V ±10%; 33-MHz Characteristics Apply Only to 5V
DD
Z8S180—20
MHz
Z8S180—33
MHz
No.
Symbol Item
Min
Max Min
Max
Unit
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
NMI Pulse Width
35
10
—
—
—
25
25
40
—
—
20
20
15
15
—
—
25
25
30
30
—
—
10
10
75
25
10
10
—
—
—
25
25
—
—
—
—
15
15
—
—
—
—
20
40
—
—
—
—
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NMIW
BRS
BUSREQ Set-up Time to PHI Fall
BUSREQ Hold Time from PHI Fall 10
BRH
PHI Rise to BUSACK Fall Delay
PHI Fall to BUSACK Rise Delay
—
—
15
15
30
—
—
15
15
15
15
—
—
15
15
15
15
—
—
10
10
50
BAD1
BAD2
BZD
PHI Rise to Bus Floating Delay Time —
MREQ Pulse Width (High)
MREQ Pulse Width (Low)
PHI Rise to RFSH Fall Delay
PHI Rise to RFSH Rise Delay
PHI Rise to HALT Fall Delay
PHI Rise to HALT Rise Delay
DREQ1 Set-up Time to PHI Rise
DREQ1 Hold Time from PHI Rise
PHI Fall to TENDi Fall Delay
PHI Fall to TENDi Rise Delay
PHI Rise to E Rise Delay
PHI Fall or Rise to E Fall Delay
E Pulse Width (High)
35
35
—
—
—
—
20
20
—
—
—
—
25
50
—
—
—
MEWH
MEWL
RFD1
RFD2
HAD1
HAD2
DRQS
DRQH
TED1
TED2
ED1
ED2
P
P
WEH
WEL
E Pulse Width (Low)
t
t
t
Enable Rise Time
Er
Enable Fall Time
Ef
PHI Fall to Timer Output Delay
TOD
UM005001-ZMP0400
ZILOG [ ZILOG, INC. ]
