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ST7689 Datasheet(PDF) 23 Page - Sitronix Technology Co., Ltd.

Part # ST7689
Description  128RGB x 160 dot 65K Color with Frame Memory Single-Chip CSTN Controller/Driver
PDF  195 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7689 Datasheet(HTML) 23 Page - Sitronix Technology Co., Ltd.

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ST7689
Version 1.0
Page 23 of 195
2009/10
6.2. LCD Power Supply Pins
Name
I/O
Description
V0OUT
V0IN
V0S
I/O
Positive LCD driver supply voltages.
V0OUT is the output voltage of V0 generated by ST7689.
V0IN is the input pin of power supply to generate V0 voltage for LCD.
V0S is the input pin of power supply to sense the V0 voltage.
V0OUT, V0IN & V0S should be connected together in FPC.
XV0OUT
XV0IN
XV0S
I/O
Negative LCD driver supply voltages.
XV0OUT is the output voltage of XV0 generated by ST7689.
XV0IN is the input pin of power supply to generate XV0 voltage for LCD.
XV0S is the input pin of power supply to sense the XV0 voltage.
XV0OUT, XV0IN & XV0S should be connected together in FPC.
VgOUT
VgIN
VgS
Vm
I/O
Bias LCD driver supply voltages.
VgOUT is the output voltage of Vg generated by ST7689.
VgIN is the input pin of power supply to generate Vg voltage for LCD.
VgS is the input pin of power supply to sense the Vg voltage.
VgOUT, VgIN & VgS should be connected together in FPC.
Vm is the I/O pin of LCD bias supply voltage.
Voltages should have the following relationship;
V0
Vg
Vm
VSS
XV0
≧
≧
≧
≧
VDDA-0.7V>Vm>0.7V
VDDA≧2.5V: (2xVDDA)-0.6V≧Vg ≧1.8V
VDDA< 2.5V: (2xVDDA)-0.6V≧Vg ≧2.5V
When the internal power circuit is active, these voltages are generated as following table according
to the state of LCD bias.
NOTE: N = 9,10,11,12,13 and 14
LCD bias
Vg
Vm
1/N bias
(2/N) x V0
(1/N) x V0
VD1out
VD1in
I/O
Voltage regulator for digital circuit.
VD1out is voltage output from regulator circuit.
VD1in is voltage input to digital circuit.
VD1in and VD1out should be connected together by FPC.



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