HD66781 Datasheet, PDF (75/196 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
PON: Set start/halt of VLOUT3 operation. Set PON according to the power supply start sequence.
PON=0: Halt
PON=1: Start
VCM[4:0]: Make a setting for VcomH (the High voltage of Vcom). VcomH can be amplified to the level
VREG1OUT x 0.41 ~ 1.00. When VCM[4:0] = 5’h1F, internal volume is halted and VcomH is adjusted by
an external resistor from VcomR. See the datasheet of HD667P21 whether to generate VcomH level with
internal electronic volume or an external resistor.
VGH[4:0]: Set the VGH regulator output level. The setting can be made from 2.82 to 4.06 times of REGP
voltage.
VGL[4:0]: Set the VGL regulator output level. The setting can be made from –1.60 to –2.84 times of
REGP voltage.
Rev.0.5, July.31.2003, page 75 of 196