ML9050 datasheet(13/71 Pages) OKI

13 / 71 page

¡ Semiconductor

ML9050/9051

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PEDL9050-02

• Line address circuit

The line address circuit is used for specifying the line address corresponding to the COM output

when displaying the contents of the display data RAM as is shown in Fig. 4. Normally, the

topmost line in the display (COM0 output in the normal display state of the common output, and

COM63 output and COM47 output for the ML9050 and the ML9051, respectively, in the reverse

display stage) is specified using the display start line address set command. The display area

is 65 lines and 49 lines for the ML9050 and the ML9051, respectively, in the direction of increasing

line address from the specified display start line address. It is possible to carry out screen

scrolling and page changing by dynamically changing the line address using the display start

line address set command.

• Display data latch circuit

The display data latch circuit is a latch for temporarily storing the data from the display data

RAM before being output to the LCD drive circuits. Since the commands for selecting normal/

reverse display and turning the display ON/OFF control the data in this latch, the data in the

display data RAM will not be changed.

Oscillator circuit

This is an RC oscillator that generates the display clock. The oscillator circuit is effective only

when M/S = "H" and also CLS = "H". The oscillations will be stopped when CLS = "L", and the

display clock has to be input to the CL pin.

ML9050 Datasheet(PDF) 13 Page - OKI electronic componets