UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 690

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

LCDMD
Symbol
Address: FF5AH
17.3 Registers Controlling LCD Controller/Driver
688
The following ten registers are used to control the LCD controller/driver.
• LCD mode register (LCDMD)
• LCD display mode register (LCDM)
• LCD clock control register (LCDC0)
• LCD port function register 0 (LCDPF0)
• LCD port function register 3 (LCDPF3)
• LCD port function register ALL (LCDPFALL)
(1)
Other than above
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.
MDSET1
Caution Bits 0 to 3, 6 and 7 must be set to 0.
7
0
0
0
1
After reset:
MDSET0
6
0
0
1
1
00H
No internal resistor connection (power save mode).
Internal resistance division method, internal resistor connection
(no step-down transforming, Used when V
Internal resistance division method, internal resistor connection
(step-down transforming, Used when V
Setting prohibited
R/W
MDSET1
Figure 17-2. Format of LCD Mode Register
CHAPTER 17 LCD CONTROLLER/DRIVER
5
Preliminary User’s Manual U19748EJ1V0UD
MDSET0
4
LCD drive voltage generator selection
3
0
LCD
LCD
= 3/5V
= V
DD
DD
)
)
2
0
1
0
0
0