Zilog Z80180 Bedienungsanleitung PDF herunterladen (Seite 208)

100

101

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

= 5V ±10% or V

= 3.3V

±10%; 33-MHz Characteristics Apply Only to 5V Operation

No. Symbol Item

Z8S180—20

MHz

Z8S180—33

MHz

UnitMin Max Min Max

CYC

Clock Cycle Time 50 DC 30 DC ns

CHW

Clock “H” Pulse Width 15 — 10 — ns

CLW

Clock “L” Pulse Width 15 — 10 — ns

Clock Fall Time — 10 — 5 ns

Clock Rise Time — 10 — 5 ns

PHI Rise to Address Valid Delay — 30 — 15 ns

Address Valid to MREQ Fall or

IORQ

Fall)

5—5—ns

MED1

PHI Fall to MREQ Fall Delay — 25 — 15 ns

RDD1

PHI Fall to RD Fall Delay IOC = 1 — 25 — 15 ns

PHI Rise to RD

Rise Delay IOC =

—25—15

10 t

M1D1

PHI Rise to M1 Fall Delay — 35 — 15 ns

11 t

Address Hold Time from

MREQ

, IOREQ, RD, WR High

5—5—ns

1 2 ... 203 204 205 206 207 208 209 210 211 212 213 ... 325 326

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