Z80180 Datasheet, PDF (208/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z8018x Family
MPU User Manual
193
AC Characteristics
This section describes the AC characteristics of the Z8X180 family and
absolute maximum rating for these products.
AC CHARACTERISTICS— Z8S180
Table 31. Z8S180 AC Characteristics V_DD = 5V ±10% or V_DD = 3.3V
±10%; 33-MHz Characteristics Apply Only to 5V Operation
Z8S180— 20 Z8S180— 33
MHz
MHz
No. Symbol Item
Min Max Min Max Unit
1
t_CYC Clock Cycle Time
50 DC 30 DC ns
2
t_CHW Clock “H” Pulse Width
15 —
10 —
ns
3
t_CLW Clock “L” Pulse Width
15 —
10 —
ns
4
t_CF
Clock Fall Time
—
10 —
5
ns
5
t_CR Clock Rise Time
—
10 —
5
ns
6
t_AD PHI Rise to Address Valid Delay —
30 —
15
ns
7
t_AS Address Valid to MREQ Fall or
5
—
5
—
ns
IORQ Fall)
8
t_MED1 PHI Fall to MREQ Fall Delay
—
25 —
15
ns
9
t_RDD1 PHI Fall to RD Fall Delay IOC = 1 —
25 —
15
ns
PHI Rise to RD Rise Delay IOC = —
25 —
15
0
10
t_M1D1 PHI Rise to M1 Fall Delay
—
35 —
15
ns
11
t_AH Address Hold Time from
5
—
5
—
ns
MREQ, IOREQ, RD, WR High
12
t_MED2 PHI Fall to MREQ Rise Delay
—
25 —
15
ns
UM005001-ZMP0400