ZiLOG Z8018 Series User Manual page 209

Table 31.
No. Symbol Item
33 t NMI Pulse Width
NMIW
34 t BUSREQ Set-up Time to PHI Fall
BRS
35 t BUSREQ Hold Time from PHI Fall
BRH
36 t PHI Rise to BUSACK Fall Delay
BAD1
37 t PHI Fall to BUSACK Rise Delay
BAD2
38 t PHI Rise to Bus Floating Delay Time —
BZD
39 t MREQ Pulse Width (High)
MEWH
40 t MREQ Pulse Width (Low)
MEWL
41 t PHI Rise to RFSH Fall Delay
RFD1
42 t PHI Rise to RFSH Rise Delay
RFD2
43 t PHI Rise to HALT Fall Delay
HAD1
44 t PHI Rise to HALT Rise Delay
HAD2
45 t DREQ1 Set-up Time to PHI Rise
DRQS
46 t DREQ1 Hold Time from PHI Rise
DRQH
47 t PHI Fall to TENDi Fall Delay
TED1
48 t PHI Fall to TENDi Rise Delay
TED2
49 t PHI Rise to E Rise Delay
ED1
50 t PHI Fall or Rise to E Fall Delay
ED2
51 P E Pulse Width (High)
WEH
52 P E Pulse Width (Low)
WEL
53 t Enable Rise Time
Er
54 t Enable Fall Time
Ef
55 t PHI Fall to Timer Output Delay
TOD
Z8S180 AC Characteristics (Continued) V
V = 3.3V ±10%; 33-MHz Characteristics Apply Only to 5V
DD
Family MPU User Manual
DD
Z8S180—20 Z8S180—33
MHz MHz
Min Max Min
35 — 25
10 — 10
10 — 10
— 25 —
— 25 —
40 —
35 — 25
35 — 25
— 20 —
— 20 —
— 15 —
— 15 —
20 — 15
20 — 15
— 25 —
— 25 —
— 30 —
— 30 —
25 — 20
50 — 40
— 10 —
— 10 —
— 75 —
Z8018x
195
= 5V ±10% or
Max Unit
— ns
— ns
ns
15 ns
15 ns
30 ns
— ns
— ns
15 ns
15 ns
15 ns
15 ns
— ns
— ns
15 ns
15 ns
15 ns
15 ns
— ns
— ns
10 ns
10 ns
50 ns
UM005004-0918