DATA SHEET - Glyn High-Tech Distribution

HX8346-A(T)240RGBx320 dots, 262,144 color TFT controller driver5.16 Free Running Mode SpecificationDATA SHEET V01Burn-in of TFT displays consists of driving each module for 10hr at a temperature of60degC. In order to drive the modules this requires extra electronics. To reduce theburn-in cost it is requested that the driver IC will generate the required display imagewithout requiring extra electronics. We term this a free running mode (FR-mode). Forburn-in it is sufficient that the display is powered up with a plane saturated black orsaturated white pattern. Black should be used for burn-in, since this result in a largerpixel voltage. White is used to verify if the free running mode is properly functioning.Note, the black and the white pattern are reversed in case of a normally black display.Parameter Symbol DescriptionPower supply pins IOVCC, VCI, VCC All power supply pinsFree running mode (1)BURNBURN = H, FR-mode is enabled, BURN = open,FR-mode is disabledReset NRESET Active low pulse in order to start the FR-mode.Chip select (2) NCS This pin will be left open during FR-mode.Data enable (2) ENABLE This pin will be left open during FR-mode.Reads/not write (2) NWR_RNW This pin will be left open during FR-mode.Data/not command (2) DNC_SCL This pin will be left open during FR-mode.Interface select (2) IFSEL This pin will be left open during FR-mode.Horizontal sync (2) HSYNC This pin will be left open during FR-mode.Vertical sync (2) VSYNC This pin will be left open during FR-mode.Data clock DOTCLK This pin will be left open during FR-mode.CPU I/F Data (2) D[17,0] This pin will be left open during FR-mode.SPI I/F Data (2) SDI This pin will be left open during FR-mode.Display color mode CM This pin will be left open during FR-mode.Display on SHUT This pin will be left open during FR-mode.Note: (1) The BURN-pin has a pull down resistor inside the driver IC, because this pin will be left openduring the normal operation in the application. The BURN-pin must be logical high for longerthan 5ms before the driver IC will switch to the FR-mode in order to avoid disturbances duringnormal operation.(2) As a general rule, all control pins of the interfaces like chip-select, data-enable, etc must bedisabled, all mode select pins like data-not-command, interface-select etc and all data-buspins must be set to eider logic high or logic low during the FR-mode.Table 5. 21 Pin InformationHimax Confidential-P.82-This 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. July, 2007