CDP1853CDX datasheet(5/6 Pages) INTERSIL

номер детали	CDP1853CDX

подробное описание детали	N-Bit 1 of 8 Decoder

PDF	6 Pages

Scroll/Zoom	100%

производитель	INTERSIL [Intersil Corporation]

домашняя страница	http://www.intersil.com/cda/home

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5 / 6 page

4-39

CDP1853, CDP1853C

FIGURE 5. N-BIT DECODER IN A ONE-LEVEL I/O SYSTEM

FIGURE 6. TWO-LEVEL I/O USING CDP1853 AND CDP1852

CS1

CS2

CDP1852

INPUT

PORT 1

MODE

7 INPUT PORTS

CLOCK

DATA

READ VIA

69 INSTRUCTION

STROBE

CS2

CS1

CDP1852

OUTPUT

PORT 1

MODE

7 OUTPUT PORTS

VDD

AVAILABLE

LOAD VIA 61

INSTRUCTION

TPB

CS1

CS2

CDP1852

INPUT

PORT 7

MODE

CLOCK

DATA

READ VIA

6F INSTRUCTION

STROBE

CS1

CS2

CDP1852

OUTPUT

PORT 7

MODE

VDD

DATA

DATA AVAILABLE

LOAD VIA 67

INSTRUCTION

TPB

CDP1800 SERIES

MRD

TPB

VDD

5 CDP1852 INPUT AND OUTPUT PORTS

TPB

CLOCK B

TPA

CLOCK A

CDP1853

2-6

CLOCK A

CLOCK B

CDP1853

“62-6F”

INST

I/O

7 INPUT

6 OUTPUT

PORTS

CDP1852

CS2

CL CSI

DATA BUS

CDP1800 SERIES

BUS

MRD

TPB

TPA

NO, N1, N2

INTERCONNECTED

AS IN FIGURE 4

NO, N1, N2

CDP1853

DECODED

“61” INSTRUCTION

TPA

CLOCK A

CLOCK B

CDP1853

“62-6F”

INST

I/O

7 INPUT

6 OUTPUT

PORTS

NO, N1, N2

CLOCK A

CLOCK B

CDP1853

“62-6F”

INST

I/O

7 INPUT

6 OUTPUT

PORTS

NO, N1, N2

SECTIONS 3-7

NOTE: SYSTEM SHOWN WILL SELECT

UP TO 56 INPUT AND 48 OUTPUT

AND OUTPUT PORTS CAN BE

FURTHER EXPANDED.

THE TOTAL NUMBER OF INPUT

PORTS. WITH ADDITIONAL DECODING

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