76 lines
1.5 KiB
Plaintext
76 lines
1.5 KiB
Plaintext
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Command 0x03a: Set number of dummy line period (7 bits)
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Range = 0..127
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POR = 22
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Command 0x03b: Set Gate (TGate) Line Width (4 bits)
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bits TGate Hz m (0x3a:22)
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0000 30
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0001 34
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0010 38
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0011 38
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0100 44
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0101 46
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0110 52
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0111 56
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1000 62 50Hz 20ms [POR]
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1001 68
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1010 78 25ms
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Command 0x0b: Set Delay of gate and source non overlap period
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0010 4
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...
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0101 10 [POR]
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...
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1110 28
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--> no influence on update time
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Formula:
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update_time = total_TS_ticks * 20ms + 10ms
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Ticks Measured Speed Measured Speed Calclated Calculated
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0x3a:26 0x3a:22
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[Milliseconds] ticks*20+10
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137 2808 2750
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97 1992 1950
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92 1888
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87 1788 1767 1750
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72 1482 1463 1450
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0 11
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1 31
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2 51 51
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10 215 212 210
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20 415
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update/refresh duration:
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(refresh_lines + dummy_lines*2)*TGate*TS_Sum/f_OSC
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f_OSC=1MHz (according to the datasheets)
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refreh_lines = 296 (for the waveshare display, 0x045 cmd)
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dummy_lines = 22 (for the upcoming u8g2 code, 0x03a cmd)
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TGate = 62 (POR default, 0x03b cmd)
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TS_Sum: Sum of all TS entries of the second part of the LUT
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f_OSC: 1MHz according to the datasheet.
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so we have
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total_refresh_time = 21080*TS_Sum/1000000 = 21ms * TS_Sum
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--> this is more or less close to the measure values.
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Ticks=61
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history clk clock on clock off Time
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on no no 1228
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on yes no 1238
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off yes yes 1382
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on yes yes 1320
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--> clock enable may take up to 150ms in this example
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clock enable (clock was off before) --> 150ms
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clock enable (clock was on before) --> 10ms
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