MSM6698GS-K データシートの表示（PDF） - Oki Electric Industry
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MSM6698GS-K Datasheet PDF : 8 Pages
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¡ Semiconductor
MSM6698
• CP
This is a clock pulse input pin of the 80-bit bidirectional shift register. Scan data is shifted at
the falling edge of a clock pulse.
• DF
This is an alternate signal input pin for LCD driving, which generally inputs a frame inversion
signal.
• DISP OFF
This is an input pin to control the output pins O1 to O80. During low signal input, signals on
the V1 level are output from the output pins O1 to O80. See the Truth Table.
• O1 to O80
4-level driver outputs of this IC device, directly corresponding to each bit of the bidirectional
shift register. Any of four levels V1, V2, V5, and VEE is selected and output combining the DF
signal with shift register data (see the Truth Table).
These outputs are connected to the Common side on the LCD panel.
• VDDR, VDDL, VSS
These are power supply pins of this IC. Both the VDDR and VDDL pins are normally 2.7 to 5.5
V. VSS is a grounding pin, which is normally 0 V.
• V1L, V2L, V5L, VEEL, V1R, V2R, V5R, VEER
These are LCD drive bias voltage pins. The V1 pin may be separated from the VDD pin. Bias
power is supplied from an external source.
Truth Table
DF
L
L
H
H
¥
¥ : Don't care
Shift register data
L
H
L
H
¥
DISP OFF
H
H
H
H
L
Driver Output (O1 to O80)
V2
VEE
V5
V1
V1
NOTES ON USE (when turning power ON and OFF)
The LCD drivers of this IC requires a high voltage. When a high voltage is applied to them with
the logic power supply floating, excess current flows. This may damage the IC. Be sure to carry
out the following power-ON and power-OFF sequences.
When turning power ON:
First turn on the logic circuits, then the LCD drivers, or turn on both of them at the same time.
When turning power OFF:
First turn off the LCD drivers, then the logic circuits, or turn off both of them at the same time.
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