UPD78F0411GA-GAM-AX Datasheet, PDF (382/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 15 LCD CONTROLLER/DRIVER
15.3 Registers Controlling LCD Controller/Driver
The following five registers are used to control the LCD controller/driver.
• LCD mode register (LCDMD)
• LCD display mode register (LCDM)
• LCD clock control register (LCDC0)
• Port function register 2 (PF2)
• Port function register ALL (PFALL)
(1) LCD mode register (LCDMD)
LCDMD sets the LCD drive voltage generator.
LCDMD is set using a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets LCDMD to 00H.
Figure 15-2. Format of LCD Mode Register
Address: FFB0H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
LCDMD
0
0
MDSET1
MDSET0
0
0
0
0
MDSET1
MDSET0
0
0
0
1
1
1
Other than above
LCD drive voltage generator selection
External resistance division method
Internal resistance division method (no step-down transforming) (Used when VLCD = VDD)
Internal resistance division method (step-down transforming) (Used when VLCD = 3/5VDD)
Setting prohibited
Caution Bits 0 to 3, 6 and 7 must be set to 0.
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User’s Manual U18698EJ1V0UD