¡ Semiconductor
ML9052
• 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
topmostlineinthedisplay(COM0outputinthenormaldisplaystateofthecommonoutput, and
COM95 output in the reverse display stage) is specified using the display start line address set
command. The display area is 97 lines 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.
13/64
OKI [ OKI ELECTRONIC COMPONETS ]
