UPD78F0411GA-GAM-AX Datasheet, PDF (378/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 15 LCD CONTROLLER/DRIVER
15.1 Functions of LCD Controller/Driver
The functions of the LCD controller/driver in the 78K0/LC3 are as follows.
(1) The LCD driver voltage generator can switch external resistance division and internal resistance division.
(2) Automatic output of segment and common signals based on automatic display data memory read
(3) Six different display modes:
• Static
• 1/2 duty (1/2 bias)
• 1/3 duty (1/2 bias)
• 1/3 duty (1/3 bias)
• 1/4 duty (1/3 bias)
• 1/8 duty (1/4 bias)
(4) Six different frame frequencies, selectable in each display mode
(5) Segment signal outputs: 22^Note (SEG0 to SEG21), Common signal outputs: 8 ^Note (COM0 to COM7)
Note The four segment signal outputs (SEG0 to SEG3) and four common signal outputs (COM4 to COM7) are
alternate-function pins. COM4 to COM7 can be used only when eight-time-slice mode is selected by the
setting of the LCD display mode register (LCDM).
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User’s Manual U18698EJ1V0UD