BU91799KV-M Datasheet, PDF (14/29 Pages) Rohm – Low Duty LCD Segment Driver for Automotive Application

BU91799KV-M MAX 200 segments (SEG50×COM4)
The Relationship of Electrical Volume Register (EVR) Setting and V0 voltage
EVR
Calculation
formula
VLCD
= 6.000
VLCD
= 5.500
VLCD
= 5.000
VLCD
= 4.000
VLCD
= 3.500
VLCD
= 3.000
VLCD
= 2.500
[V]
0
VLCD
V0= 6.000 V0= 5.500 V0= 5.000 V0= 4.000 V0= 3.500 V0= 3.000 V0= 2.500
[V]
1
0.967*VLCD V0= 5.802 V0= 5.323 V0= 4.839 V0= 3.871 V0= 3.387 V0= 2.903 V0= 2.419
[V]
2
0.937*VLCD V0= 5.622 V0= 5.156 V0= 4.688 V0= 3.750 V0= 3.281 V0= 2.813 V0= 2.344
[V]
3
0.909*VLCD V0= 5.454 V0= 5.000 V0= 4.545 V0= 3.636 V0= 3.182 V0= 2.727 V0= 2.273
[V]
4
0.882*VLCD V0= 5.292 V0= 4.853 V0= 4.412 V0= 3.529 V0= 3.088 V0= 2.647 V0= 2.206
[V]
5
0.857*VLCD V0= 5.142 V0= 4.714 V0= 4.286 V0= 3.429 V0= 3.000 V0= 2.571 V0= 2.143
[V]
6
0.833*VLCD V0= 4.998 V0= 4.583 V0= 4.167 V0= 3.333 V0= 2.917 V0= 2.500 V0= 2.083
[V]
7
0.810*VLCD V0= 4.860 V0= 4.459 V0= 4.054 V0= 3.243 V0= 2.838 V0= 2.432 V0= 2.027
[V]
8
0.789*VLCD V0= 4.734 V0= 4.342 V0= 3.947 V0= 3.158 V0= 2.763 V0= 2.368 V0= 1.974
[V]
9
0.769*VLCD V0= 4.614 V0= 4.231 V0= 3.846 V0= 3.077 V0= 2.692 V0= 2.308 V0= 1.923
[V]
10
0.750*VLCD V0= 4.500 V0= 4.125 V0= 3.750 V0= 3.000 V0= 2.625 V0= 2.250 V0= 1.875
[V]
11
0.731*VLCD V0= 4.386 V0= 4.024 V0= 3.659 V0= 2.927 V0= 2.561 V0= 2.195 V0= 1.829
[V]
12
0.714*VLCD V0= 4.284 V0= 3.929 V0= 3.571 V0= 2.857 V0= 2.500 V0= 2.143 V0= 1.786
[V]
13
0.697*VLCD V0= 4.182 V0= 3.837 V0= 3.488 V0= 2.791 V0= 2.442 V0= 2.093 V0= 1.744
[V]
14
0.681*VLCD V0= 4.086 V0= 3.750 V0= 3.409 V0= 2.727 V0= 2.386 V0= 2.045 V0= 1.705
[V]
15
0.666*VLCD V0= 3.996 V0= 3.667 V0= 3.333 V0= 2.667 V0= 2.333 V0= 2.000 V0= 1.667
[V]
16
0.652*VLCD V0= 3.912 V0= 3.587 V0= 3.261 V0= 2.609 V0= 2.283 V0= 1.957 V0= 1.630
[V]
17
0.638*VLCD V0= 3.828 V0= 3.511 V0= 3.191 V0= 2.553 V0= 2.234 V0= 1.915 V0= 1.596
[V]
18
0.625*VLCD V0= 3.750 V0= 3.438 V0= 3.125 V0= 2.500 V0= 2.188 V0= 1.875 V0= 1.563
[V]
19
0.612*VLCD V0= 3.672 V0= 3.367 V0= 3.061 V0= 2.449 V0= 2.143 V0= 1.837 V0= 1.531
[V]
20
0.600*VLCD V0= 3.600 V0= 3.300 V0= 3.000 V0= 2.400 V0= 2.100 V0= 1.800 V0= 1.500
[V]
21
0.588*VLCD V0= 3.528 V0= 3.235 V0= 2.941 V0= 2.353 V0= 2.059 V0= 1.765 V0= 1.471
[V]
22
0.576*VLCD V0= 3.456 V0= 3.173 V0= 2.885 V0= 2.308 V0= 2.019 V0= 1.731 V0= 1.442
[V]
23
0.566*VLCD V0= 3.396 V0= 3.113 V0= 2.830 V0= 2.264 V0= 1.981 V0= 1.698 V0= 1.415
[V]
24
0.555*VLCD V0= 3.330 V0= 3.056 V0= 2.778 V0= 2.222 V0= 1.944 V0= 1.667 V0= 1.389
[V]
25
0.545*VLCD V0= 3.270 V0= 3.000 V0= 2.727 V0= 2.182 V0= 1.909 V0= 1.636 V0= 1.364
[V]
26
0.535*VLCD V0= 3.210 V0= 2.946 V0= 2.679 V0= 2.143 V0= 1.875 V0= 1.607 V0= 1.339
[V]
27
0.526*VLCD V0= 3.156 V0= 2.895 V0= 2.632 V0= 2.105 V0= 1.842 V0= 1.579 V0= 1.316
[V]
28
0.517*VLCD V0= 3.102 V0= 2.845 V0= 2.586 V0= 2.069 V0= 1.810 V0= 1.552 V0= 1.293
[V]
29
0.508*VLCD V0= 3.048 V0= 2.797 V0= 2.542 V0= 2.034 V0= 1.780 V0= 1.525 V0= 1.271
[V]
30
0.500*VLCD V0= 3.000 V0= 2.750 V0= 2.500 V0= 2.000 V0= 1.750 V0= 1.500 V0= 1.250
[V]
31
0.491*VLCD V0= 2.946 V0= 2.705 V0= 2.459 V0= 1.967 V0= 1.721 V0= 1.475 V0= 1.230
[V]
Prohibit setting
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8. Feb. 2016 Rev.001