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ML9060

1/2 DUTY, 160-OUTPUT STATIC LCD DRIVER

Oki Electric Industry 

¡ Semiconductor

ML9060

FUNCTIONAL DESCRIPTION

The ML9060 is an LCD driver LSI with an internal shift register and a set of internal data latches

and is capable of driving LCD displays of up to 320 segments either in the static mode or in the

1/2 duty mode. The display data is read into the shift register serially from the DATA IN pin

at the rising edge of the CLOCK IN input signal. The display data is transferred internally to

the data latches at the High level of the LOAD IN input signal and is output to the segments

via the segment drivers in this IC. The display data in the shift register is output via the DATA

OUT pin in synchronization with the falling edge of the CLOCK IN input signal. The display

data should be input in the sequence of SEG160, SEG159, ... , SEG2, SEG1 for proper display of

data.

Description of Pin Functions

• M/S

This is the input pin for selecting either the Master mode or the Slave mode. This LSI goes into

the master mode when this pin is High and enters the Slave mode when this pin is Low.

• D/S

This input pin is for selecting either the dynamic display mode at 1/2 duty (D mode - “H” input)

or the static display mode (S mode - “L” input).

Note that the internal bias resistor is made ON in the dynamic (D) mode and is turned OFF in

the static mode (S).

• OSC I/E

This is the input pin for selecting whether to use the external clock input mode, or the internal

Rf oscillation mode or the external Rf oscillation mode.

When this pin is tied to the “H” level, the internal Rf oscillation mode or the external Rf

oscillation is used. When this pin is tied to the “L” level, the external clock input is used for the

operation of the LSI.

In the slave mode of operation of this LSI, any input to this pin will be ignored. Hence, tie this

pin to VDD or GND in the slave mode.

• OSC1, OSCR, OSC2

These are the pins for the oscillator for generating the common signal.

In the Master mode (M/S pin = “H”):

It is possible to select from among the three modes - internal Rf oscillation mode, external Rf

oscillation mode, and the external clock input mode. During the static display operation mode,

a common signal with 1/128th the frequency of the clock oscillator is output via the COM OUT

pin.

During the 1/2 duty dynamic display operation mode, a common signal with 1/64th the

frequency of the clock oscillator is output via the COM OUT pin.

• Internal Rf oscillation mode: Tie the OSC I/E pin to “H”, short the pins OSCR and OSC2, and

leave the pin OSC1 open.

• External Rf oscillation mode: Tie the OSC I/E pin to “L”, connect an external resistor Rf

between the pins OSC1 and OSC2, and leave the pin OSCR open.

• External clock input mode: Tie the OSC I/E pin to “L”, leave open the pins OSCR and OSC2,

and input the external clock signal to the pin OSC1.

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