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MSM5260 Datasheet(PDF) 9 Page - OKI electronic componets

Part # MSM5260
Description  80-DOT COMMON/SEGMENT DRIVER
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

MSM5260 Datasheet(HTML) 9 Page - OKI electronic componets

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MSM5260
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Table 1
• COM/SEG
Selection signal input pin. MSM5260 is used either as common driver or segment driver
according to input signal level at COM/SEG pin.
When this pin is set when at "H" level, MSM5260 is used as a common driver, while it is used
as a segment driver when at "L" level.
The display driving data O1 to O80 are determined according to the combination of latched
data and DF signal, as shown in Table 1 below.
VDD
H
High
(Select)
H
Common driver
V5
L
V3
H
V2
L
V5
H
VDD
L
V3
H
V2
L
Low
(Non-select)
High
(Select)
Low
(Non-select)
L
Latched
data level
Driver data output level
(O1 - O80)
COM/SEG
DF
Remarks
Segment driver
When MSM5260 is used as a common driver, both LOAD pin and COM/SEG pin are to be
connected to VDD. In this case, a bias voltage of common side’s non-select level is to be
supplied to V2 and V3 pins.
•VDD, VSS
Supply voltage pins. VDD should be 4.5 to 5.5V.
VSS is a ground pin (VSS = 0V)
•V2, V3, V5
Bias supply voltage pins to drive the LCD. Use an external bias voltage supply for driving
the LCD.
•O1 to O80
Display data output pins which correspond to each bit of the 80-bit latch.
One of VDD, V2, V3 and V5 is selected as a display driving voltage source according to the
combination of latched data level and DF signal.
NOTES ON USE
Note the following when turning power on and off :
The LCD drivers of this IC requiers a high voltage. For this reason, if a high voltage is applied
to the LCD drivers 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 VDD ON, next V5, V3, V2 ON. Or both ON at the same time.
When turning power off :
First V5, V3, V2 OFF, next VDD OFF. Or both OFF at the same time.


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