CHAPTER 28:LCD Controller
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
1079
7.11.
How can I Select either Internal or External for the Division Resistor?
This section shows how to select either internal or external for the division resistor.
When the internal division resistor is selected
Even when the internal division resistor is used if the V3 pin is used as V
3
voltage, the external resistor
must be connected between Vcc and V3.
When the external division resistor is selected
Voltage for the LCD drive is set with the external division resistor connected to the power pins for LCD
drive (V0 to V3).
Setting of LCD drive voltage
V3
V2
V1
V0
1/2 bias
VLCD
1/2VLCD
1/2VLCD
VSS
1/3 bias
VLCD
2/3VLCD
1/3VLCD
VSS
V
0
to V
3
: Voltage of V0 to V3 pins
V
LCD
: Operation voltage of the LCD
Selected by COMVER: VE3
Selected by COMVER: VE3
V3
V2
V1
V0
N- ch
R
R
R
V
3
V
2
V
1
V
0
LCDC
operation enabled
VR
Vcc
V3
V2
V1
V0
N- ch
R
R
R
V
3
V
2
V
1
V
0
LCDC
operation enabled
VR
Vcc
1/2 bias
1/3 bias
Содержание S6J3200 Series
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