MSM6779 Ver la hoja de datos (PDF) - Oki Electric Industry
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Fabricante
MSM6779 Datasheet PDF : 9 Pages
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¡ Semiconductor
PEDL6779B-01
MSM6779B
D0, D1, D2, D3
These are display data inputs that input data with clock synchronization. The table below shows
the relationship between the LCD output for the display data and DFs and the LCD.
Display Data
DF
L
L
H
L
L
H
H
H
LCD drive output
LCD
Non-selection level (V3)
OFF
Selection level (V1)
ON
Non-selection level (V4)
OFF
Selection level (VEE)
ON
LOAD
This is an input to simultaneously output the display data of one line stored in the latch (I). At
the falling edge, the data in the latch (I) is transferred to the latch (II) end is output.
SHL
Input to select for display data reading direction. Input of "L" level at Vss level fetches data in
the direction from O160 to O1 sequentially, while input of "H" level at VDD fetches data in the
direction from O1 to O160. The table below shows the relationship between read data and driver
outputs (O1 to O160).
SHL
EIO1
EIO2
Data
Numbers of the clock pulse
input 40 clocks 39 clocks 38 clocks ... 3 clocks 2 clocks
D0
O1
L Outputs Inputs D1
O2
D2
O3
D3
O4
D0
O160
H Inputs Outputs D1
O159
D2
O158
D3
O157
O5
O6
O7
O8
O156
O155
O154
O153
O9
...
O149
O10
...
O150
O11
...
O151
O12
...
O152
O152
...
O12
O151
...
O11
O150
...
O10
O149
...
O9
O153
O154
O155
O156
O8
O7
O6
O5
1 clocks
O157
O158
O159
O160
O4
O3
O2
O1
TRUTH TABLE
DF
L
L
H
H
X
X : don't care
Display Data
L
H
L
H
X
DISPOFF
H
H
H
H
L
Driver output (01~0160)
V3
V1
V4
VEE
V1
NOTES ON USAGE (when turning the power ON or OFF)
If a high voltage is applied to a LCD drive system while the logic supply is floating, over-current may
destroy the device, because the voltage over the LCD drive system is high.
Follow the sequence below when turning the power ON or OFF.
Power ON : Logic system ON Æ LCD drive system ON, or both ON
Power OFF : LCD drive system OFF Æ logic system OFF, or both OFF
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