Z80180 Datasheet, PDF (210/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z8018x Family
MPU User Manual
195
Table 31. Z8S180 AC Characteristics (Continued) V_DD = 5V ±10% or
V_DD = 3.3V ±10%; 33-MHz Characteristics Apply Only to 5V
Z8S180— 20 Z8S180— 33
MHz
MHz
No. Symbol Item
Min Max Min Max Unit
33
t_NMIW NMI Pulse Width
35 —
25 —
ns
34
t_BRS BUSREQ Set-up Time to PHI Fall 10 —
10 —
ns
35
t_BRH BUSREQ Hold Time from PHI Fall 10 —
10
ns
36
t_BAD1 PHI Rise to BUSACK Fall Delay —
25 —
15
ns
37
t_BAD2 PHI Fall to BUSACK Rise Delay —
25 —
15
ns
38
t_BZD PHI Rise to Bus Floating Delay Time —
40 —
30
ns
39
t_MEWH MREQ Pulse Width (High)
35 —
25 —
ns
40
t_MEWL MREQ Pulse Width (Low)
35 —
25 —
ns
41
t_RFD1 PHI Rise to RFSH Fall Delay
—
20 —
15
ns
42
t_RFD2 PHI Rise to RFSH Rise Delay
—
20 —
15
ns
43
t_HAD1 PHI Rise to HALT Fall Delay
—
15 —
15
ns
44
t_HAD2 PHI Rise to HALT Rise Delay
—
15 —
15
ns
45
t_DRQS DREQ1 Set-up Time to PHI Rise 20 —
15 —
ns
46
t_DRQH DREQ1 Hold Time from PHI Rise 20 —
15 —
ns
47
t_TED1 PHI Fall to TENDi Fall Delay
—
25 —
15
ns
48
t_TED2 PHI Fall to TENDi Rise Delay
—
25 —
15
ns
49
t_ED1 PHI Rise to E Rise Delay
—
30 —
15
ns
50
t_ED2 PHI Fall or Rise to E Fall Delay
—
30 —
15
ns
51
P_WEH E Pulse Width (High)
25 —
20 —
ns
52
P_WEL E Pulse Width (Low)
50 —
40 —
ns
53
t_Er
Enable Rise Time
—
10 —
10
ns
54
t_Ef
Enable Fall Time
—
10 —
10
ns
55
t_TOD PHI Fall to Timer Output Delay
—
75 —
50
ns
UM005001-ZMP0400