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AN2641 Datasheet(PDF) 16 Page - STMicroelectronics |
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AN2641 Datasheet(HTML) 16 Page - STMicroelectronics |
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16 / 37 page  Enabling and disabling the CLCD AN2641 16/37 Doc ID 14027 Rev 1 4 Enabling and disabling the CLCD The procedure for enabling and disabling the CLCD is shown in Figure 5. The delay for signal stabilization depends on the display type. Caution: If the delay is too short or non existent, the panel may not work properly and sometimes hangs with a white screen. Figure 5. CLCD OFF/ON sequence ● Enable the control signals by setting the LCD controller enable bit [0] in the LCD-control register to 1. To disable the control signals, set this bit to 0. ● Connect the power to the CLCD panel by setting LCD power enable bit [11] in the LCD- control register to 1. To disconnect the power from the panel, set this bit to 0. Enable control signal Enable data and power signal Disable control signal Disable data and power signal Small delay to let the signal stabilize Small delay to tet the signal stabilize CLCD display and working |
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