h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 553

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

17.3.2
LCR controls LCD power supply split-resistance connection and display data, and selects the
frame frequency.
Bit
7
6
5
4
Bit Name

PSW
ACT
DISP
LCD Control Register (LCR)
Initial
Value
1
0
0
0
R/W
R/W
R/W
R/W
R/W
Description
Reserved
This bit is always read as 1. The write value should
always be 0.
LCD Power Supply Split-Resistance Connection Control
Disconnects the LCD power supply split-resistance from
V
mode, or when an external power supply is used. When
the ACT bit is cleared to 0, and also in standby mode, the
LCD power supply split-resistance is disconnected from
V
0: LCD power supply split-resistance is disconnected
1: LCD power supply split-resistance is connected to V
Display Function Activate
Specifies whether or not the LCD controller/driver is used.
Clearing this bit to 0 halts operation of the LCD
controller/driver. The LCD drive power supply ladder
resistance is also turned off, regardless of the setting of
the PSW bit. However, register contents are retained.
0: LCD controller/driver operation halted
1: LCD controller/driver operation activated
Display Data Control
Specifies whether the LCD RAM contents are displayed
or blank data is displayed regardless of the LCD RAM
contents.
0: Blank data is displayed
1: LCD RAM data is displayed
CC
CC
from V
when LCD display is not required in a power-down
regardless of the setting of this bit.
CC
Rev. 2.00 Dec. 05, 2005 Page 515 of 724
Section 17 LCD Controller/Driver
REJ09B0200-0200
CC