OM6208 NXP Semiconductors, OM6208 Datasheet - Page 34
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OM6208
Manufacturer Part Number
OM6208
Description
Om6208 65 X 96 Pixels Matrix Grey-scale Lcd Driver
Manufacturer
NXP Semiconductors
Datasheet
1.OM6208.pdf
(68 pages)
- Current page: 34 of 68
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Philips Semiconductors
11.11 Grey-scale mode and black-and-white mode
It is possible to set via command the working mode of the
OM6208. This is by setting the MOD bit of the ‘frame
frequency’ instruction, oscillator tune and mode.
By default, the MOD bit is set to logic 0 and grey-scale
mode is selected. In that mode, grey-scales are generated
using Frame Rate Control (FRC). Three frames together
form a super-frame. The frame frequency is adjustable but
all three frames have the same duration. A grey-scale is
generated by selecting either 0, 1, 2 or all 3 frames (see
Table 17).
If the MOD bit is set to logic 1 black-and-white mode is
selected, meaning that only black-and-white levels are
generated and only one frame type is sent to the display.
Thus only the MSBs stored in the RAM are used for all
three frames. The LSBs are ignored. Thus the way the
data is stored in the RAM is the same as for grey-scale.
As all frames are identical the frame frequency may be
reduced (see Table 11).
2003 feb 10
handbook, full pagewidth
65 x 96 pixels matrix grey-scale LCD driver
V LCD
40
Fig.31 Example of segmented temperature coefficients.
A
10
B
20
34
Table 17 Grey-scale levels with FRC
Note
1. The first and second frames in each super-frame are
11.12 N-line inversion and frame inversion
N-line inversion can be set from 0 to 127 as shown in
Table 18.
Normal mode (E = 0)
Inverse mode (E = 1)
C
0
0
1
1
0
0
1
1
related to the MSB of GS[1:0] (GS = 11); the third
frame is related to the LSB (GS = 00).
GS[1:0]
50
0
1
0
1
0
1
0
1
D
SUPER-FRAME
80
000
001
110
111
111
110
001
000
T ( C)
MGW834
(1)
Product specification
GREY-SCALE
OM6208
dark grey
dark grey
light grey
light grey
LEVELS
white
black
black
white
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