1-31
HX-Z1R
Description of major ICs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Vss
DATA
CLOCK
LCK
Q0
Q1
Q2
Q3
Q4
Vdd
OE
Q11
Q10
Q9
Q8
Q7
Q6
Q5
CONTROL
CIRCUIT
OUTPUT B
UFFER(OPEN DRAIN)
12BIT STRA
GE RESISTER
12BIT SHIFT RESISTER
1.Pin Layout
1
2
3
4
5~16
17
18
Vss
DATA
CLOCK
LCK
Q0~Q11
OE
Vdd
-
I
I
I
O
I
-
Connect to GND
Serial Data input
Shift Clock of Data
Latch Clock of Data
Parallel Data Output
Output Enable
Power Supply
Pin No.
Symbol
I/O
Function
Latch Data L H
OUTPUT ON OFF
2.Pin function
BU2092 (IC642) : Port expander
www.freeservicemanuals.info
3/29/2018
Digitized in Heiloo Netherlands