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UC1682THCZ Scheda tecnica(PDF) 7 Page - List of Unclassifed Manufacturers

Il numero della parte UC1682THCZ
Spiegazioni elettronici  HIGH-VOLTAGE MIXED-SIGNAL IC
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Produttore elettronici  ETC2 [List of Unclassifed Manufacturers]
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UC1682
80x104RGB CSTN Controller-Driver
Revision 0.6
5
PIN DESCRIPTION
Name
Type
Pins
Description
MAIN POWER SUPPLY
VDD
VDD2
VDD3
PWR
VDD2/VDD3 is the analog power supply and it should be connected to the
same power source. VDD is the digital power supply and it should be
connected to a voltage source that is no higher than VDD2/VDD3.
Please maintain the following relationship:
VDD+1V
VDD2/3
VDD.
"Minimize the trace resistance for VDD and VDD2/VDD3.
VSS
VSS2
GND
Ground. Connect VSS and VSS2 to the shared GND pin.
Minimize the trace resistance for this node.
LCD POWER SUPPLY & VOLTAGE CONTROL
VBIAS
I
This is the reference voltage to generate the actual SEG driving voltage.
VBIAS can be used to fine tune VLCD by external variable resistors.
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 VBIAS pin. When not
used, it is OK to leave VBIAS open circuit. If noise starts to cause
problem, connect a small bypass capacitor between VBIAS and VSS.
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.
VB1+ VB1–
VB0+ VB0–
PWR
LCD Bias Voltages. These are the voltage sources to provide SEG
driving currents. These voltages are generated internally. Connect
capacitors of CBX value between VBX+ and VBX–.
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.
SB1+ SB1–
SB0+ SB0–
I
Wire to corresponding VB1/2x pin. Merge ITO traces between
corresponding SBx and VBx in COG.
VLCD-IN
VLCD-OUT
PWR
High voltage LCD Power Supply. Connect these pins together.
By-pass capacitor CL is optional. It can be connected between VLCD and
VSS. When CL is used, keep the trace resistance under 300 Ω.
NOTE
Recommended capacitor values:
CB: 150~250x LCD load capacitance or 2.2µF (2V), whichever is higher.
CL: (Optional) 5nF~50nF (16V) is appropriate for most applications.
1M/VR
VDD2/ VDD3
VBIAS
330K


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