AM186 datasheet(67/112 Pages) AMD

Part #	AM186

Description	High-Performance, 80C186- and 80C188-Compatible, 16-Bit Embedded Microcontrollers with RAM

PDF	112 Pages

Scroll/Zoom	100%

Manufacturer	AMD [Advanced Micro Devices]

Direct Link	http://www.amd.com

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67 / 112 page

Am186TMER and Am188TMER Microcontrollers Data Sheet

DRAF

COMMERCIAL AND INDUSTRIAL SWITCHING CHARACTERISTICS AND WAVEFORMS

In the switching waveforms that follow, several

abbreviations are used to indicate the specific periods

of a bus cycle. These periods are referred to as time

states. A typical bus cycle is composed of four

consecutive time states: t1, t2, t3, and t4. Wait states,

which represent multiple t3 states, are referred to as tw

states. When no bus cycle is pending, an idle (ti) state

occurs.

In t he sw itchin g p a r a m e ter descr ipt i ons, the

multiplexed address is referred to as the AD address

bus; the

nonmultiplexed address is referred to as the A

address bus.

Key to Switching Waveforms

Must be

Steady

May

Change

from H to L

May

Change

from L to H

Does Not

Apply

Don’t Care,

Any Change

Permitted

Will be

Steady

Will be

Changing

from H to L

Will be

Changing

from L to H

Changing,

State

Unknown

Center

Line is High-

Impedance

Off State

WAVEFORM

INPUT

OUTPUT

Invalid

AM186 Datasheet(PDF) 67 Page - Advanced Micro Devices

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