LG LM-M1030A Service Manual page 51

I BU2090F (IC501)
12-bit, Serial IN, Parallel OUT driver
Block diagram
PIN DESCRIPTION
Pin No.
BU2090/F/FS BU2092/F
1
2
3
-
4
5
6
7
8
9
10
-
-
11
12
13
14
15
-
16
Vss
1
DATA
2
12-bit shift register
CLOCK
3
Q0
4
Q1
5
Q2
6
Q3
7
Q4
8
BU2092/FV
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
11 11
- 12
- 13
12 14
13 15
14 16
15 17
16 18
17 19
18 20
16
Control circuit
15
14
Latch
13
Output buffer
(open drain)
12
11
10
9
Pin name
Vss GND
DATA Serial data input
CLOCK Data shift clock input
LCK Data latch clock input
Q0 parallel data output
Q1 parallel data output
Q2 parallel data output
Q3 parallel data output
Q4 parallel data output
Q5 parallel data output
Q6 parallel data output
N.C. Not connected
N.C. Not connected
Q7 parallel data output
Q8 parallel data output
Q9 parallel data output
Q10 parallel data output
Q11 parallel data output
OE Output Enable
V Power supply
DD
- 2-54 -
V
DD
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Function