HX8347 - Adafruit

HX8347-G(T)240RGB x 320 dot, 262K color, TFT Mobile Single Chip Driver6.19 Power control 2 register (PAGE0 -1Bh)R/WDNCRB7RB6 RB5 RB4 RB3 RB2 RB1 RB0DATA SHEET Preliminary V01W1* * VRH5 VRH4 VRH3 VRH2 VRH1 VRH0R 1 * * VRH5 VRH4 VRH3 VRH2 VRH1 VRH0Figure 6.29: Power control 2 register (PAGE0 -1Bh)VRH[4:0]: Specify the VREG1 voltage adjusting. VREG1 voltage is for gammavoltage setting.VREG1=Decimal(VRH[5:0])x0.05+3.3.VRH5 VRH4 VRH3 VRH2 VRH1 VRH0VREG1(DDVDH_TRI=0)VREG1(DDVDH_TRI=1)0 0 0 0 0 0 3.30 3.300 0 0 0 0 1 3.35 3.350 0 0 0 1 0 3.40 3.400 0 0 0 1 1 3.45 3.450 0 0 1 0 0 3.50 3.500 0 0 1 0 1 3.55 3.550 0 0 1 1 0 3.60 3.600 0 0 1 1 1 3.65 3.650 0 1 0 0 0 3.70 3.70: : : : : : : :0 1 1 1 0 1 4.75 4.750 1 1 1 1 0 4.80 4.800 1 1 1 1 1 STOP 4.851 0 0 0 0 0 STOP 4.901 0 0 0 0 1 STOP 4.95: : : : : : : :1 1 0 0 0 0 STOP 5.701 1 0 0 0 1 STOP 5.751 1 0 0 1 0 STOP 5.801 1 0 0 1 1 STOP STOP1 1 1 0 1 1 STOP STOP: : : : : : : :1 1 1 1 1 0 STOP STOP1 1 1 1 1 1Internal circuit operations stop. Thegamma voltage can be adjusted fromexternal VREG1 input.Note: Internal VREF can be modified by Custom’s special request. default VREF=4.8 ifDDVDH_TRI=0 and VREF=5.8 if DDVDH_TRI=1VREG1={Decimal(VRH[5:0])x0.05+3.3 }*(VREF/4.8) if DDVDH_TRI=0.VREG1={Decimal(VRH[5:0])x0.05+3.3 }*(VREF/5.8) if DDVDH_TRI=1.Himax ConfidentialFor Go-tek OnlyThis information contained herein is the exclusive property of Himax and shall not be distributed, reproduced, or disclosedin whole or in part without prior written permission of Himax.-P.135-October, 2009