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Z80A. Z-80A Datasheet

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Z80A. Z-80A Datasheet






Z-80A Z80A. Datasheet pdf. Equivalent




Z-80A Z80A. Datasheet pdf. Equivalent





Part

Z-80A

Description

Z80A



Feature


www.DataSheet4U.com www.DataSheet4U.com Z80 Family CPU Peripherals User Manua l UM008101-0601 www.DataSheet4U.com Zi LOG Worldwide Headquarters • 910 E. H amilton Avenue • Campbell, CA 95008 T elephone: 408.558.8500 • Fax: 408.558 .8300 • www.ZiLOG.com www.DataSheet4 U.com Z80 CPU Peripherals User Manual www.DataSheet4U.com ii This publicat ion is subject to replacem.
Manufacture

ETC

Datasheet
Download Z-80A Datasheet


ETC Z-80A

Z-80A; ent by a later edition. To determine whe ther a later edition exists, or to requ est copies of publications, contact: Z iLOG Worldwide Headquarters 910 E. Hami lton Avenue Campbell, CA 95008 Telephon e: 408.558.8500 Fax: 408.558.8300 www.Z iLOG.com Windows is a registered trade mark of Microsoft Corporation. Documen t Disclaimer ©2001 by ZiLOG, Inc. All rights reserved. In.


ETC Z-80A

formation in this publication concerning the devices, applications, or technolo gy described is intended to suggest pos sible uses and may be superseded. ZiLOG , INC. DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF ACCURACY O F THE INFORMATION, DEVICES, OR TECHNOLO GY DESCRIBED IN THIS DOCUMENT. ZiLOG AL SO DOES NOT ASSUME LIABILITY FOR INTELL ECTUAL PROPERTY IN.


ETC Z-80A

FRINGEMENT RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Devices sold by ZiLOG, Inc. are covered by warr anty and limitation of liability provis ions appearing in the ZiLOG, Inc. Terms and Conditions of Sale. ZiLOG, Inc. ma kes no warranty of merchantability or f itness for any purpose Except with the express written ap.

Part

Z-80A

Description

Z80A



Feature


www.DataSheet4U.com www.DataSheet4U.com Z80 Family CPU Peripherals User Manua l UM008101-0601 www.DataSheet4U.com Zi LOG Worldwide Headquarters • 910 E. H amilton Avenue • Campbell, CA 95008 T elephone: 408.558.8500 • Fax: 408.558 .8300 • www.ZiLOG.com www.DataSheet4 U.com Z80 CPU Peripherals User Manual www.DataSheet4U.com ii This publicat ion is subject to replacem.
Manufacture

ETC

Datasheet
Download Z-80A Datasheet




 Z-80A
www.DataSheet4U.com
www.DataSheet4U.com
Z80 Family
CPU Peripherals
User Manual
UM008101-0601
www.DataSheet4U.com
ZiLOG Worldwide Headquarters • 910 E. Hamilton Avenue • Campbell, CA 95008
Telephone: 408.558.8500 • Fax: 408.558.8300 • www.ZiLOG.com




 Z-80A
www.DataSheet4U.com
Z80 CPU Peripherals
User Manual
ii
www.DataSheet4U.com
This publication is subject to replacement by a later edition. To determine whether a later
edition exists, or to request copies of publications, contact:
ZiLOG Worldwide Headquarters
910 E. Hamilton Avenue
Campbell, CA 95008
Telephone: 408.558.8500
Fax: 408.558.8300
www.ZiLOG.com
Windows is a registered trademark of Microsoft Corporation.
Document Disclaimer
©2001 by ZiLOG, Inc. All rights reserved. Information in this publication concerning the devices,
applications, or technology described is intended to suggest possible uses and may be superseded.
ZiLOG, INC. DOES NOT ASSUME LIABILITY FOR OR PROVIDE A REPRESENTATION OF
ACCURACY OF THE INFORMATION, DEVICES, OR TECHNOLOGY DESCRIBED IN THIS
DOCUMENT. ZiLOG ALSO DOES NOT ASSUME LIABILITY FOR INTELLECTUAL PROPERTY
INFRINGEMENT RELATED IN ANY MANNER TO USE OF INFORMATION, DEVICES, OR
TECHNOLOGY DESCRIBED HEREIN OR OTHERWISE. Devices sold by ZiLOG, Inc. are covered
by warranty and limitation of liability provisions appearing in the ZiLOG, Inc. Terms and Conditions of
Sale. ZiLOG, Inc. makes no warranty of merchantability or fitness for any purpose Except with the
expwrewssww.rDitteantaapSprhoveael otf4ZUiL.OcGo, muse of information, devices, or technology as critical components
of life support systems is not authorized. No licenses are conveyed, implicitly or otherwise, by this
document under any intellectual property rights.
UM008101-0601
Disclaimer




 Z-80A
www.DataSheet4U.com
Z80 CPU Peripherals
User Manual
www.DataSheet4U.com
iii
Table of Contents
Counter/Timer Channels
CTC Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CTC General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
CTC Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Structure of Channel Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Interrupt Control Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
CTC Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Pin Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
CTC Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
CTC Counter Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
CTC Timer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
CTC Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Loading The Channel Control Register . . . . . . . . . . . . . . . . . . . .19
Loading The Time Constant Register . . . . . . . . . . . . . . . . . . . . . .22
Loading The Interrupt Vector Register . . . . . . . . . . . . . . . . . . . . .22
CTC Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
CTC Write Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
CTC Read Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
CTC Counting and Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
CTC Interrupt Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
www.DataSheIRneetettu4rrrUnup.ftcroAommckInnotewrrluedpgt eCCycylcele.
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.28
.29
Daisy-Chain Interrupt Servicing . . . . . . . . . . . . . . . . . . . . . . . . . .30
UM008101-0601
Table of Contents






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