ICM7224 Intersil Corporation, ICM7224 Datasheet - Page 2

• Manufacturer Part Number: ICM7224
• Description: 41/2 Digit LCD Display Counter
• Manufacturer: Intersil Corporation

Functional Block Diagram
OSCILLATOR
COUNT
BLANKING
INHIBIT
COUNT
RESET
INPUT
LEADING
OUTPUT
STORE
INPUT
ZERO
SCHMITT
TRIGGER
SEGMENT OUTPUTS
CL
OSCILLATOR
÷
7 WIDE DRIVER
R
7 WIDE LATCH
2
Q
DECODER
DIGIT 1
LSD
DETECTOR
ENABLE
CL
÷
R
5
Q
+124
SEGMENT OUTPUTS
CL
÷
7 WIDE DRIVER
R
7 WIDE LATCH
2
Q
DECODER
BLACKPLANE
DIGIT 2
ENABLE
DRIVER
ICM7224
CL
÷
R
5
Q
2
SEGMENT OUTPUTS
CL
÷
7 WIDE DRIVER
R
7 WIDE LATCH
2
Q
DECODER
DIGIT 3
CL
÷
R
5
Q
SEGMENT OUTPUTS
CL
÷
7 WIDE DRIVER
R
7 WIDE LATCH
2
Q
DECODER
DIGIT 4
CL
÷
R
5
BP INPUT/OUTPUT
Q
V
DD
D
CL
1
1
1
LEADING
ZERO
BLANKING
INPUT
OUTPUT
DRIVER
LATCH
/
/
/
2
2
2
DIGIT
MSD
CARRY
OUTPUT
1
DIGIT
DIGIT
DIGIT
R
/
2
Q