HD66787 Datasheet, PDF (125/159 Pages) Renesas Technology Corp – 528-channel, One-chip Driver with 262,144-color Display RAM and Power Supply Circuit for Low-temperature Poli-Si TFT (LTPS-TFT) Panels with Incorporat

HD66787
Formulas for calculating voltage (Negative polarity) (2)
Grayscale
Voltage
Formula
V0 VINN0
V1 V4+(VINN1-V4)*(15/24)
V2 V4+(VINN1-V4)*(8/24)
V3 V4+(VINN1-V4)*(4/24)
V4 VINN2
V5
V10+(V4-V10)*(20/24)
V6 V10+(V4-V10)*(16/24)
V7 V10+(V4-V10)*(12/24)
V8 V10+(V4-V10)*(8/24)
V9
V20+(V8-V20)*(4/24)
V10 VINN3
V11 V21+(V10-V21)*(21/24)
V12 V21+(V10-V21)*(19/24)
V13 V21+(V10-V21)*(17/24)
V14 V21+(V10-V21)*(15/24)
V15 V21+(V10-V21)*(13/24)
V16 V21+(V10-V21)*(11/24)
V17 V21+(V10-V21)*(9/24)
V18 V21+(V10-V21)*(7/24)
V19 V21+(V10-V21)*(5/24)
V20 V21+(V10-V21)*(3/24)
V21 VINN4
V22 V27+(V21-V27)*(20/24)
V23 V27+(V21-V27)*(16/24)
V24 V27+(V21-V27)*(12/24)
V25 V27+(V21-V27)*(8/24)
V26 V27+(V21-V27)*(4/24)
V27 VINN5
V28 VINN6 +(V27-VINN6)*(20/24)
V29 VINN6 +(V27-VINN6)*(16/24)
V30 VINN6 +(V27-VINN6)*(9/24)
V31 VINN7
Note : Make sure DDVDH - V0 > 0.5V
DDVDH - V4 > 1.1V
Preliminary
Rev.0.22, May.23.2003, page 125 of 159