uc1682 ETC-unknow, uc1682 Datasheet - Page 7

• Manufacturer Part Number: uc1682
• Description: 80 X 104rgb C-stn Lcd Controller-driver W/ 32-shade Per Dot, 12-bit Per Rgb
• Manufacturer: ETC-unknow

P
N
Revision 0.6
V
V
S
S
V
x
OTE
V
Name
IN
B1+
B0+
B1+
B0+
LCD-OUT
V
V
V
V
V
V
LCD-IN
BIAS
DD2
DD3
SS2
DD
SS
D
V
V
S
S
Recommended capacitor values:
B1–
B0–
B1–
B0–
ESCRIPTION
C
C
B
L
: (Optional) 5nF~50nF (16V) is appropriate for most applications.
: 150~250x LCD load capacitance or 2.2µF (2V), whichever is higher.
Type
PWR
GND
PWR
PWR
I
I
Pins
LCD P
This is the reference voltage to generate the actual SEG driving voltage.
V
Internal resistor network has been provided to simplify external trimming
circuit. The following network is sufficient for most applications.
An internal RC filter is provided to filter noise on the V
used, it is OK to leave V
problem, connect a small bypass capacitor between V
In the OTP version, this pin is disconnected from internal circuit. So,
there is no need to add bypass capacitor for this pin for OTP version.
V
same power source. V
connected to a voltage source that is no higher than V
Please maintain the following relationship:
"
Ground. Connect V
Minimize the trace resistance for this node.
LCD Bias Voltages. These are the voltage sources to provide SEG
driving currents. These voltages are generated internally. Connect
capacitors of C
The resistance of these traces directly affects the driving strength of
SEG electrodes and impacts the image of the LCD module. Minimize
the trace resistance is critical in achieving high quality image.
Wire to corresponding V
corresponding S
High voltage LCD Power Supply. Connect these pins together.
By-pass capacitor C
V
Minimize the trace resistance for V
BIAS
DD2
SS
. When C
OWER
/V
V
can be used to fine tune V
DD
DD3
M
+1V  V
AIN
S
is the analog power supply and it should be connected to the
UPPLY
L
P
is used, keep the trace resistance under 300 .
OWER
V
BX
BIAS
Bx
DD2/3
value between V
& V
and V
SS
L
S
OLTAGE
is optional. It can be connected between V
 V
and V
UPPLY
DD
BIAS
B1/2x
Bx
is the digital power supply and it should be
DD
in COG.
open circuit. If noise starts to cause
SS2
.
pin. Merge ITO traces between
C
Description
ONTROL
to the shared GND pin.
LCD
330K
1M/VR
BX+
by external variable resistors.
DD
and V
and V
80x104RGB CSTN Controller-Driver
V
BX–
DD2
DD2
.
/V
/ V
DD3
DD3
.
BIAS
BIAS
DD2
/V
pin. When not
and V
DD3
UC1682
.
SS
LCD
.
and
5