OKI MSM6779B Datasheet
PEDL6779B-01
PEDL6779B-01
Preliminary
This version: Sep. 2000
MSM6779B¡ Semiconductor
¡ Semiconductor
MSM6779B
160-DOT SEGMENT DRIVER (TCP)
GENERAL DESCRIPTION
The MSM6779B is a LCD dot matrix segment driver. Fabricated in CMOS technology, the device
consists of 160-bit latches I and II, a 160-bit level shifter, and a 4-level driver. The MSM6779B
latches the 4-bit parallel display data sent from a microcontroller or a LCD controller to generate
a LCD driving signal. This MSM6779B has a power-save function that sets all the drivers except
one to the low supply current status (IDD SBY).
This driver's 3V-operation allows significant reduction in current consumption, suitable for
battery-driving. The bias voltage to specify a drive level can be supplied externally. The
MSM6779B can be used for various types of LCD panels.
FEATURES
• Logic supply voltage : 2.7 V to 5.5 V
• LCD drive voltage : A wide range from 14 V to 28 V
• Applicable LCD duty : 1/64 to 1/256
• The bias voltage can be supplied externally.
• LCD outputs : 160
• A power-save function to reduce power consumption in a large-screen LCD panel.
• A 4-bit parallel data transfer to reduces its transfer speed to 1/4 of conventional serial transfer,
providing low power consumption.
• Data transfer clock frequency : 6.5 MHz
• 35mm-wide-film TCP
Tin-plating
User area : 8 mm
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BLOCK DIAGRAM
PEDL6779B-01
MSM6779B¡ Semiconductor
V
V
V
V
EEL
DF
DISPOFF
LOAD
D
D
D
D
SHL
O3O2O
1
1L
3L
4L
160-DOT 4-LEVEL DRIVER
O
158
160-bit LEVEL SHIFTER
O
O
160
159
V
1R
V
3R
V
4R
V
EER
V
DD
´
V
EE
V
DD
´
V
SS
160-bit LATCH (II)
0
1
2
3
DATA
CONTROL
160-bit LATCH (I) (4X40)
20-bit SHIFT REGISTER
EIO
V
V
CP
DD
SS
CONTROL
1
CIRCUIT
EIO
2
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PIN CONFIGURATION (TOP VIEW)
V
1R
V
3R
V
4R
V
EER
V
DDR
SHL
V
SS
EIO
2
D
0
D
1
D
2
D
3
CP
LOAD
DF
DISPOFF
EIO
1
V
DDL
V
EEL
V
4L
V
3L
V
1L
PEDL6779B-01
MSM6779B¡ Semiconductor
O
160
O
159
O
158
O
3
O
2
O
1
Note: The drawing shown does not specify the exact outline of the TCP; it only specifies the pin
layout.
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