Z8S18020VSG datasheet(19/71 Pages) ZILOG | Two Chain-Linked DMA Channels

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Z8S18020VSG データシート(PDF) 19 Page - Zilog, Inc.

部品番号	Z8S18020VSG

部品情報	Two Chain-Linked DMA Channels

Download	71 Pages

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メーカー	ZILOG [Zilog, Inc.]

ホームページ	http://www.zilog.com

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Z8S18020VSG データシート(HTML) 19 Page - Zilog, Inc.

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background image

<5<.

ZiLOG

'PJCPEGF </KETQRTQEGUUQT

&5</2

2 4 ' . + / + 0 # 4 ;

When

+1% = 0, the timing of the +143 and 4& signals match

the timing of the Z80. The

+143 and 4& signals go active

as a result of the rising edge of T2. (Figure 12.)

*#.6 CPF .QY2QYGT 1RGTCVKPI /QFGU Th e

Z8S180/Z8L180 can operate in seven modes with respect

to activity and power consumption:

Normal Operation

*#.6 Mode

+15612 Mode

5.''2 Mode

5;56'/ 5612 Mode

+&.' Mode

56#0&$; Mode (with or without 37+%- 4'%18

'4;)

0QTOCN 1RGTCVKQP In this state, the Z8S180/Z8L180 pro-

cessor is fetching and running a program. All enabled func-

tions and portions of the device are active, and the

*#.6

pin is High.

*#.6 /QFG This mode is entered by the *#.6 instruc-

tion. Thereafter, the Z8S180/Z8L180 processor continually

fetches the following opcode but does not execute it and

drives the

*#.6, 56 and / pins all Low. The oscillator

and

2*+ pin remain Active. Interrupts and bus granting to

external Masters, and DRAM refresh can occur, and all on-

chip I/O devices continue to operate including the DMA

channels.

(KIWTG +1 4GCF CPF 9TKVG %[ENGU YKVJ +1%

6

6

6W

6!

2*+

+143

4&

94

(KIWTG +1 4GCF CPF 9TKVG %[ENGU YKVJ +1%

6

6

6W

6!

2*+

+143

4&

94

同様の部品番号 - Z8S18020VSG

メーカー	部品番号	データシート	部品情報
Zilog, Inc.	Z8S18020VSC	387Kb / 70P	ENHANCED Z180 MICROPROCESSOR

同様の説明 - Z8S18020VSG

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