Z80180 Просмотр технического описания (PDF) - Zilog

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производитель

Z80180

ENHANCED Z180 MICROPROCESSOR

Zilog 

Zilog

Z80180/Z8S180/Z8L180

Enhanced Z180 Microprocessor

Reset

Timer Data Register

Write (0004H)

0 < t < 20 φ

20 φ 20 φ 20 φ 20 φ 20 φ 20 φ 20 φ 20 φ 20 φ

1

Timer Data

Register

FFFFH 0004H 0003H 0002H 0001H 0000H 0003H 0002H 0001H 0000H 0003H

Timer Reload

Register

TDE Flag

Timer Reload Register Write (0003H)

FFFFH 0003H

Write “1” to TDE

Reload

Reload

TIF Flag

Timer Data Register Read

Timer Control Requestor Read

Figure 5. Timer Initialization, Count Down, and Reload Timing

φ

TOUT

Timer Data Timer Data

Reg. = 0001H Reg. = 0000H

Figure 6. Timer Output Timing

DS971800401

PRELIMINARY

1-13

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