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R61509V Target Spec
Rev. 0.11 April 25, 2008, page 154 of 181
VCOMH and VREG1OUT Voltage Adjustment Sequence
When adjusting the VCOMH voltage by setting VCM[6:0] (R280h, internal VCOMH level adjustment
circuit), follow the sequence below.
The R61509V can retain permanently the VREG1OUT and VCOMH level adjustment setting values in
NVM.
To write data to NVM, see “NVM Control” and NVM Write Sequence”.
㪠㫅㪻㪼㫏 㪈㪌 㪈㪋 㪈㪊 㪈㪉 㪈㪈 㪈㪇 㪐 㪏 㪎 㪍 㪌 㪋 㪊 㪉 㪈 㪇
㪍㪝㪈㪿
㩷
㩷
㩷
㪠㫅㪻㪼㫏 㪈㪌 㪈㪋 㪈㪊 㪈㪉 㪈㪈 㪈㪇 㪐 㪏 㪎 㪍 㪌 㪋 㪊 㪉 㪈 㪇
㪉㪏㪇㪿
㪭㪚㪤㩷
㪲㪍㪴
㩷
㪭㪚㪤㩷
㪲㪌㪴
㪭㪚㪤
㪲㪋㪴
㪭㪚㪤㩷
㪲㪊㪴
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㪲㪉㪴
㪭㪚㪤
㪲
㪈
㪴
㪭㪚㪤
㪲㪇㪴
㪬㪠㪛
㪲㪊㪴
㪬㪠㪛
㪲㪉㪴
㪬㪠㪛㩷
㪲㪇㪴
㪥㪭㪛㪘㪫㩷
㪲
㪈㪌
㪴
㪥㪭㪛㪘㪫㩷
㪲
㪈㪋
㪴
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㪴
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㪲
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㪴
㪥㪭㪛㪘㪫
㪲
㪐
㪴
㪥㪭㪛㪘㪫
㪲
㪏
㪴
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㪲
㪎
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㪥㪭㪛㪘㪫
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㪲
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㪲
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㪬㪠㪛㩷
㪲㪈㪴
㩷
㩷
㪬㪠㪛
㪲㪎㪴
㪬㪠㪛
㪲㪍㪴
㪬㪠㪛
㪲㪋㪴
㪬㪠㪛
㪲㪌㪴
Display ON Sequence
Complete the VCOMH level adjustment.
The display on the panel will
flicker when the VCOMH
level is adjusted internally.
Set NVDAT[15] to 1.
NVM (1)
NVM Data Write Register
Set write data.
Adjust VCOMH
level
Set NVDAT[3:0] to the value set in
UID[7:0]. Then, write data to NVM.
Check the display
quality.
Set NVDAT[10:4] to the value set in the
VCM[6:0] after VCOMH level
adjustment. Then, write data to NVM.
VCOM level adjustment
R280h: VCM[6:0]
Set VCM[6:0] adjustment
value.
Figure 65