SSD1858 Solomon Systech, SSD1858 Datasheet - Page 26

• Manufacturer Part Number: SSD1858
• Description: LCD Segment / Common Driver
• Manufacturer: Solomon Systech

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Bit Pattern
0100 10XX
XD
0100 11XX
XXXN
0101 0B
0110 01B
1000 0001
XXC
21
SSD1858
6
D
5
C
5
4
D
4
N
4
2
C
3
B
D
1
N
3
B
1
C
3
2
B
D
0
N
2
0
C
2
1
D
N
1
C
1
0
D
0
0
Rev 1.1
09/2002
Command
Set Multiplex Ratio
Set N-line Inversion
Set LCD Bias
Set Boost Level
Set Contrast Level
Description
The second command specifies the number of lines,
excluding ICONS, to be displayed. With Icon is disabled
(POR), 16~64 Mux could be selected. With Icon
enabled, the available Mux are 17~ 65.
D
000000
0001111
0010000
0010001
1000000
1000001
1000010
1111111
The second command sets the n-line inversion register
from 3 to 33 lines to reduce display crosstalk. Register
values from 00001b to 11111b are mapped to 3 lines to
33 lines respectively. Value 00000b disables the N-line
inversion, which is the POR value.
To avoid a fix polarity at some lines, it should be noted
that the total number of Mux (including the icon line)
should NOT be a multiple of the lines of inversion (n).
N
00000
00001
00010
11101
11110
11111
Sets the LCD bias from 1/4 ~ 1/9 according to B
000: 1/4 bias
001: 1/5 bias
010: 1/6 bias
011: 1/7 bias
100: 1/8 bias
101: 1/9 bias (POR)
110: 1/9 bias
111: 1/9 bias
Set the DC-DC multiplying factor from 2X to 5X
B
00: 3X (POR)
01: 4X
10: 5X
11: 2X
The second command sets one of the 64 contrast
levels. The darkness increase as the contrast level
increase.
1
6
4
B
– D
– N
0
:
0
0
…
…
…
…
Mux(icon disable) Mux(icon enable)
n-line inversion
Exit n-line inversion
3 lines
4 lines
31 lines
32 lines
33 lines
invalid
invalid
invalid
invalid
invalid
16
17
64
SOLOMON
invalid
invalid
invalid
invalid
invalid
17
18
65
2
B
1
B
0
: