msm5265 Oki Semiconductor, msm5265 Datasheet - Page 8

• Manufacturer Part Number: msm5265
• Description: 80-dot Lcd Driver
• Manufacturer: Oki Semiconductor

¡ Semiconductor
• D/S
• EXT/INT
• COM-OUT
• SYNC
• DATA-IN, CLOCK
• DATA-OUT1
• DATA-OUT2
• LOAD
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.
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.
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.
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
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.
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.
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.
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.
MSM5265
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