Datasheet

3
ICM7228
Functional Block Diagram
8 SEGMENT
DRIVERS
8 DIGIT
DRIVERS
DECODE
NO-DECODE
8-BYTE
STATIC
RAM
HEXADECIMAL/
CODE B
DECODER
MULTIPLEX
OSCILLATOR
WRITE ADDRESS
COUNTER
CONTROL
LOGIC
READ
ADDRESS, DIGIT
MULTIPLEXER
ICM7228A, ICM7228B
ID0 - ID7
INPUT
DATA
ID4 - ID7
CONTROL
INPUTS MODE WRITE
SHUTDOWN
HEXA/CODE B
DECODE
INTERDIGIT
BLANKING
DECIMAL
POINT
8
8
4
1 1
1
1
4
7
7
7
8
8
8
1
1
3
18
1
7
1
8 SEGMENT
DRIVERS
8 DIGIT
DRIVERS
8-BYTE
STATIC
RAM
HEXADECIMAL/
CODE B
DECODER
MULTIPLEX
OSCILLATOR
WRITE ADDRESS
COUNTER
THREE LEVEL
INPUT LOGIC
READ
ADDRESS
MULTIPLEXER
ICM7228C
WRITE
SHUTDOWN
INTERDIGIT
BLANKING
DECIMAL
POINT
1
5 1
1
4
7
8
8
8
5
18
1
1
DA0 - DA2
3
DIGIT
ADDRESS
ID0 - ID3
ID7
DATA INPUT
HEXADECIMAL/
CODE B/
SHUTDOWN