MSM5265 データシートの表示（PDF） - Oki Electric Industry

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MSM5265

80-DOT LCD DRIVER

Oki Electric Industry 

¡ Semiconductor

MSM5265

• D/S

When this pin is set at high level, the MSM5265 operates in the 1/2 duty dynamic display

mode, the MSM5265 operates in the static display mode when this pin is set at low level.

• EXT/INT

When the external common signal is used, fix this pin at high level and input the external

common signal from the OSC-IN pin. The input common signal is used as the internal

common signal and is output from the COM-OUT pin through the buffer. When the built-in

common signal generator is used, fix this pin at low level. When the MSM5265 is used as an

output expander, fix this pin at high level and the OSC-IN pin at low level. The output logic

can be reveresed in respect to the input data by setting OSC-IN to "H" level.

• COM-OUT

When two or more MSM5265s are connected in series (cascade connection), this pin should

be connected with all of the slave MSM5265's OSC-IN pins.

• SYNC

This pin is an input/output pin which is used when two or more MSM5265s are connected

in series (cascade connection) in the 1/2 duty dynamic display mode. All of the involved

MSM5265's SYNC pins should be connected by the same line and they should be pulled up

with a common resistor, which makes a phase level of all involved MSM5265's COM-A and

COM-B pins equal. When a single MSM5265 is used in the dynamic display mode, SYNC

should be pulled up with a resistor.

Connect this pin to GND if any of the following conditions is true:

– the MSM5265 is operated in the static display mode

– two or more MSM5265 devices are cascade connected

– a single MSM5265 device is used

– the MSM5265 is used as an output expander

• DATA-IN, CLOCK

The display data is serially input from the DATA-IN pin to the 160-stage shift register at the

rising edge of the CLOCK pulse. The high level of the display data is used to turn the display

on, while low level of the display data is used to turn off the display.

• DATA-OUT1

The 80th stage of the shift register contents is output from this pin.

When two or more MSM5265s are connected in series (cascade connection) in the static

display mode, this pin should be connected to the next MSM5265's DATA-IN pin.

• DATA-OUT2

The 160th stage of the shift register contents is output from this pin.

When two or more MSM5265s are connected in series (cascade connection) in the 1/2 duty

dynamic display mode, this pin should be connected to the next MSM5265's DATA-IN pin.

• LOAD

The signal for latching the shift register contents is input from this pin.

When LOAD pin is set at high level, the shift register contents are shifted to the 80 sets of LCD

drivers. When this pin is set at low level, the last display data is held which was transfered

to the 80 sets of LCD drivers when LOAD pin was set at high level.

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