Zilog Z80180 - Manual (Page 208)

Z8018x
Family MPU User Manual
193
UM005003-0703
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
No. Symbol Item
Z8S180—20
MHz
Z8S180—33
MHz
Unit Min Max Min Max
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
IORQ Fall) 5 — 5 — ns
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 =
0
— 25 — 15
10 t
M1D1
PHI Rise to M1 Fall Delay — 35 — 15 ns
11 t
AH
Address Hold Time from
MREQ, IOREQ, RD, WR High 5 — 5 — ns