ICM7228DIBI(1997) データシートの表示（PDF） - Intersil

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ICM7228DIBI
(Rev.:1997)

8-Digit, Microprocessor Compatible, LED Display Decoder Driver

Intersil 

Functional Block Diagram

ICM7228

ICM7228A, ICM7228B

ID0 - ID7

INPUT

8

DATA

8

ID4 - ID7

CONTROL

INPUTS MODE

4

1

WRITE

1

DECODE

HEXA/CODE B

CONTROL

LOGIC

SHUTDOWN

1

1

1

1

8-BYTE

STATIC

RAM

7

4

8

WRITE ADDRESS

COUNTER

8

1

8

READ

ADDRESS, DIGIT

MULTIPLEXER

HEXADECIMAL/

CODE B

7

DECODER

7

1

3

MULTIPLEX

OSCILLATOR

DECODE

NO-DECODE

8

7

DECIMAL

POINT

1

INTERDIGIT

BLANKING

8 SEGMENT

DRIVERS

8 DIGIT

DRIVERS

ICM7228C, ICM7228D

HEXADECIMAL/

CODE B/

SHUTDOWN

1

ID0 - ID3

DA0 - DA2

ID7

DIGIT

DATA INPUT WRITE ADDRESS

5

1

3

THREE LEVEL

1

INPUT LOGIC

SHUTDOWN

8

WRITE ADDRESS

8-BYTE

COUNTER

1

STATIC

RAM

8

4

HEXADECIMAL/

CODE B

DECODER

1

8

READ

ADDRESS

MULTIPLEXER

5

MULTIPLEX

OSCILLATOR

8

7

DECIMAL

POINT

1

INTERDIGIT

BLANKING

8 SEGMENT

DRIVERS

8 DIGIT

DRIVERS

9-19

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