MSM5260 查看數據表（PDF） - Oki Electric Industry

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MSM5260

80-DOT COMMON/SEGMENT DRIVER

Oki Electric Industry 

¡ Semiconductor

MSM5260

• 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.

Table 1

COM/SEG

H

L

Latched

data level

High

(Select)

Low

(Non-select)

High

(Select)

Low

(Non-select)

DF

Driver data output level

(O1 - O80)

Remarks

H

VDD

L

V5

Common driver

H

V3

L

V2

H

V5

L

VDD

Segment driver

H

V3

L

V2

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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