HD66781 Datasheet, PDF (163/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
The gray scale levels (V0-V63) are calculated according to the following formulas.
Formulas for calculating voltage (Positive polarity) (1)
Pins
Formula
KVP0
KVP1
KVP2
KVP3
KVP4
KVP5
KVP6
KVP7
KVP8
KVP9
KVP10
KVP11
KVP12
KVP13
KVP14
KVP15
KVP16
KVP17
KVP18
KVP19
KVP20
KVP21
KVP22
KVP23
KVP24
KVP25
KVP26
KVP27
KVP28
KVP29
KVP30
KVP31
KVP32
KVP33
KVP34
KVP35
KVP36
KVP37
KVP38
KVP39
KVP40
KVP41
KVP42
KVP43
KVP44
KVP45
KVP46
KVP47
KVP48
KVP49
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
VDH-
V*VxP0/SUMRP
V*(VxRP0+5R)/SUMRP
V*(VxRP0+9R)/SUMRP
V*(VxRP0+13R)/SUMRP
V*(VxRP0+17R)/SUMRP
V*(VxRP0+21R)/SUMRP
V*(VxRP0+25R)/SUMRP
V*(VxRP0+29R)/SUMRP
V*(VxRP0+33R)/SUMRP
V* VxRP0+33R+VRHP /SUMRP
V* VxRP0+34R+VRHP /SUMRP
V* VxRP0+35R+VRHP /SUMRP
V* VxRP0+36R+VRHP /SUMRP
V* VxRP0+37R+VRHP /SUMRP
V* VxRP0+38R+VRHP /SUMRP
V* VxRP0+39R+VRHP /SUMRP
V* VxRP0+40R+VRHP /SUMRP
V* VxRP0+45R+VRHP /SUMRP
V* VxRP0+46R+VRHP /SUMRP
V* VxRP0+47R+VRHP /SUMRP
V* VxRP0+48R+VRHP /SUMRP
V* VxRP0+49R+VRHP /SUMRP
V* VxRP0+50R+VRHP /SUMRP
V* VxRP0+51R+VRHP /SUMRP
V* VxRP0+52R+VRHP /SUMRP
V* VxRP0+68R+VRHP /SUMRP
V* VxRP0+69R+VRHP /SUMRP
V* VxRP0+70R+VRHP /SUMRP
V* VxRP0+71R+VRHP /SUMRP
V* VxRP0+72R+VRHP /SUMRP
V* VxRP0+73R+VRHP /SUMRP
V* VxRP0+74R+VRHP /SUMRP
V* VxRP0+75R+VRHP /SUMRP
V* VxRP0+80R+VRHP /SUMRP
V* VxRP0+81R+VRHP /SUMRP
V* VxRP0+82R+VRHP /SUMRP
V* VxRP0+83R+VRHP /SUMRP
V* VxRP0+84R+VRHP /SUMRP
V* VxRP0+85R+VRHP /SUMRP
V* VxRP0+86R+VRHP /SUMRP
V* VxRP0+87R+VRHP /SUMRP
V* VxRP0+87R+VRHP+VRLP /SUMRP
V* VxRP0+91R+VRHP+VRLP /SUMRP
V* VxRP0+95R+VRHP+VRLP /SUMRP
V* VxRP0+99R+VRHP+VRLP /SUMRP
V* VxRP0+103R+VRHP+VRLP /SUMRP
V* VxRP0+107R+VRHP+VRLP /SUMRP
V* VxRP0+111R+VRHP+VRLP /SUMRP
V* VxRP0+115R+VRHP+VRLP /SUMRP
V* VxRP0+120R+VRHP+VRLP /SUMRP
Note 1) Sum of ladder resistors with positive polarities = 128R+VRHP+VRLP+VRP0+VRP1
Note 2) Sum of ladder resistors with negative polarities = 128R+VRHN+VRLN+VRN0+VRN1
Note 3) ∆V :Electric potential difference between VDH and VGS
Fine-adjustment
registers
PKP0[2:0]=”000”
PKP0[2:0]=”001”
PKP0[2:0]=”010”
PKP0[2:0]=”011”
PKP0[2:0]=”100”
PKP0[2:0]=”101”
PKP0[2:0]=”110”
PKP0[2:0]=”111”
PKP1[2:0]=”000”
PKP1[2:0]=”001”
PKP1[2:0]=”010”
PKP1[2:0]=”011”
PKP1[2:0]=”100”
PKP1[2:0]=”101”
PKP1[2:0]=”110”
PKP1[2:0]=”111”
PKP2[2:0]=”000”
PKP2[2:0]=”001”
PKP2[2:0]=”010”
PKP2[2:0]=”011”
PKP2[2:0]=”100”
PKP2[2:0]=”101”
PKP2[2:0]=”110”
PKP2[2:0]=”111”
PKP3[2:0]=”000”
PKP3[2:0]=”001”
PKP3[2:0]=”010”
PKP3[2:0]=”011”
PKP3[2:0]=”100”
PKP3[2:0]=”101”
PKP3[2:0]=”110”
PKP3[2:0]=”111”
PKP4[2:0]=”000”
PKP4[2:0]=”001”
PKP4[2:0]=”010”
PKP4[2:0]=”011”
PKP4[2:0]=”100”
PKP4[2:0]=”101”
PKP4[2:0]=”110”
PKP4[2:0]=”111”
PKP4[2:0]=”000”
PKP5[2:0]=”001”
PKP5[2:0]=”010”
PKP5[2:0]=”011”
PKP5[2:0]=”100”
PKP5[2:0]=”101”
PKP5[2:0]=”110”
PKP5[2:0]=”111”
Reference
voltage
VINP0
VINP1
VINP2
VINP3
VINP4
VINP5
VINP6
VINP7
Rev.0.5, July.31.2003, page 163 of 196