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STE2007 датащи(PDF) 50 Page - STMicroelectronics |
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STE2007 датащи(HTML) 50 Page - STMicroelectronics |
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50 / 62 page ![]() Commands STE2007 50/62 8.12.3 Electronic volume This command sets a value of electronic volume EV for the VLCD voltage regulator, to adjust the contrast of LCD panel display (End User). Table 34. Electronic volume Table 35. EV 8.13 Power saver mode If the display all points ON command is executed when the display is in display OFF mode, power saver mode is entered. This mode stops every operation of the LCD display system. Figure 38. Power saver mode The internal states in power saver mode are as follows: – The oscillation circuit is stopped – The LCD power supply circuit is stopped – The LCD driver circuit is stopped and segment/common driver outputs to the Vss level – The display data and operation mode before execution of the Power saver are held, and the MCU can access to the DDRAM and internal registers. (D/C) D7D6D5 D4D3D2 D1D0 Setting 0 1 0 0 Electronic Volume Value Command Identifier + Data Field (D/C) D7D6 D5D4D3 D2D1D0 Hex EV Value VLCD voltage 0 100 000 00 80 0 Step low 0 0 0 0 0 1 81 1 Step 0 0 0 0 1 0 82 2 Step :: : : : 0 1 0 0 0 0 90 16 Step (Default) :: : : : 0 1 1 1 1 0 9E 30 Step 0 1 1 1 1 1 9F 31 Step high Power saver (Display OFF & Display all points ON Power saver mode Powersaver OFF (Display all points OFF) Power saver mode canceled Command Effect |
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