HT1623
Block Diagram
O S C O
O S C I
C S
R D
W R
D A T A
V D D
V S S
B Z
B Z
T o n e F re q u e n c y
G e n e ra to r
W a tc h d o g T im e r
a n d
T im e B a s e G e n e r a to r
C o n tro l
a n d
T im in g
C ir c u it
C O M 0
L C D D r iv e r /
B ia s C ir c u it
C O M 7
S E G 0
S E G 4 7
V L C D
IR Q
D is p la y R A M
Pin Assignment
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 5 0
1 0 0 9 9 9 8 9 7 9 6 9 5 9 4 9 3 9 2 9 1 9 0 8 9 8 8 8 7 8 6 8 5 8 4 8 3 8 2 8 1
N C
N C
N C
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
4 6
4 7
N C
C S
R D
W R
D A T A
V S S
O S C I
O S C O
V D D
V L C D
IR Q
B Z
B Z
T 1
T 2
T 3
C O M 0
C O M 1
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
C O M 2
C O M 3
C O M 4
8 0
7 9
7 8
7 7
7 6
7 5
7 4
7 3
7 2
7 1
7 0
6 9
N C
N C
N C
N C
N C
N C
N C
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
S E
N C
N C
N C
N C
G 3 1
G 3 0
G 2 9
G 2 8
G 2 7
G 2 6
G 2 5
G 2 4
G 2 3
G 2 2
G 2 1
G 2 0
G 1 9
G 1 8
G 1 7
G 1 6
G 1 5
G 1 4
G 1 3
H T 1 6 2 3
1 0 0 Q F P
6 8
6 7
6 6
6 5
6 4
6 3
6 2
6 1
6 0
5 9
5 8
5 7
5 6
5 5
5 4
5 3
5 2
5 1
N C
N C
N C
N C
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
S E G
C O M
C O M
C O M
0
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
5
6
7
2
April 21, 2000
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
