DATA SHEET - Glyn High-Tech Distribution

HX8346-A(T)240RGBx320 dots, 262K color TFT controller driverDATA SHEET V01FS0(1-0):Set the operating frequency of the step-up circuit 1 and extra step-up circuit 1 forVLCD voltage generation. When using the higher frequency, the driving ability of thestep-up circuit and the display quality are high, but the current consumption isincreased. The tradeoff is between the display quality and the current consumption.DCDCf = DC / DC converter operating frequencyFS01 FS0 Operation Frequency of Step-up Circuit 1 and Extra Step-up circuit 10 0 DCDCf / 10 1 DCDCf / 21 0 DCDCf / 41 1 DCDCf / 8FS1(1-0):Set the operating frequency of the step-up circuit 2 and 3 for VGH,VGL,VCL voltagegeneration. When using the higher frequency, the driving ability of the step-up circuitand the display quality are high, but the current consumption is increased. Thetradeoff is between the display quality and the current consumption.DCDCf = DC / DC converter operating frequencyFS11 FS10 Operation Frequency of Step-up Circuit 2 , Step-up Circuit 30 0 DCDCf / 10 1 DCDCf / 21 0 DCDCf / 41 1 DCDCf / 8Note : Ensure that the operation frequency of step-up circuit 1 ≧ step-up circuit 27.24 Read Data Register (R22h)R/WRSRB17 RB16RB15 RB14 RB13 RB12 RB11 RB10 RB9 RB8 RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0R 1RD17 RD16 RD15 RD14 RD13 RD12 RD11 RD10 RD9 RD8 RD7 RD6 RD5 RD4 RD3 RD2 RD1 RD0Figure 7. 34 Read Data Register (R22h)RD17-0: Read 18-bit data from GRAM through the read data register (RDR). Whenthe data is read by microcomputer, the first-word read immediately after the GRAMaddress setting is latched from the GRAM to the internal read-data latch. The data onthe data bus (D17–0) becomes invalid and the second-word read is normal.Write Data Register (R22h)Figure 7. 35 Write Data Register (R22h)WD[15:0] : Transforms the data into 16-bit bus before written to GRAM through thewrite data register (WDR). After a write operation is issued, the address isautomatically updated according to the AM and I/D bits.Himax ConfidentialThis 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.100-July, 2007