HD66781 Datasheet, PDF (4/196 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
Timing interfacing with LCD panel signals........................................................ 151
High-Speed Burst RAM Write Function ............................................................ 153
Notes to the high-speed RAM write mode............................................................................. 154
High-Speed RAM Write with Window Address Function..................................................... 155
Window Address Function ................................................................................. 156
γ-Correction Function ......................................................................................... 157
Grayscale Amplifier Configuration........................................................................................ 158
γ-Correction Registers............................................................................................................ 160
Ladder resistors and 8 to 1 selector........................................................................................ 162
Variable resistors ................................................................................................................... 162
Relationship between RAM data and output level (REV =0) ................................................ 167
Relationship between RAM data and output level (REV =1) ................................................ 168
Low Power Consumption Display Mode............................................................ 169
8-color Display Mode ......................................................................................... 172
Oscillation Circuit............................................................................................... 173
n-raster-row Inversion alternating Drive ............................................................ 174
Interlaced Drive .................................................................................................. 175
Alternating Timing.............................................................................................. 177
Frame-Frequency Adjustment Function ............................................................. 178
Relationship between Liquid Crystal Drive Duty and Frame Frequency .............................. 178
Partial Display Function ..................................................................................... 179
Power-saving drive settings ................................................................................ 180
Equalization function .......................................................................................... 183
Specifications of external element of HD66781 ................................................. 184
Instruction Setting............................................................................................... 185
Power-supply/display ON (LPTS = 0: a-Si TFT panel, with HD66783) ............................... 186
Power-supply/display OFF (LPTS = 0: a-Si TFT panel, with HD66783) ............................. 187
Power-supply/display ON (LPTS = 1: LTPS TFT panel, with HD667P21).......................... 188
Power-supply/display OFF (LPTS = 1: LPTS TFT panel, with HD667P21) ........................ 189
Standby/Sleep mode............................................................................................................... 190
Deep standby mode................................................................................................................ 191
Low power consumption display mode.................................................................................. 192
8-color mode .......................................................................................................................... 192
Rev.0.5, July.31.2003, page 4 of 196