Lcd - Hitachi SH7760 Solution Engine2 Overview

5.4 LCD

5.4.1 Block Description
Figure 5.6 shows the LCD control block. As shown in Figure 5.6, the LCD control block contains an SH7760
internal LCD controller and an LCD panel (TFT liquid crystal panel) mounted on the LCD board that can display
16-bit RGB data with a resolution of QVGA (240 x 320). In addition, the SRAM allocated to area 3 is used for
the LCD display VRAM (Video RAM).
Display data is stored in the order of coordinates (0,0), (1,0), ... (239, 319) from the address set in the LCD
controller register (LDSARU). On the LCD panel display, data at the upper left corner is handled as data on the
origin (0,0) and data at the lower right corner is handled as data on the coordinates (239,319).
The front light on the LCD panel can be turned on or off by the power supply controller. For details on front
light control, refer to 6. "Power Supply Controller." In addition, refer to the pertinent SH7760 Hardware
Manual for details on the LCD controller.
Power supply controller
(H8/3048F-ONE)
SH7760
LCD
controller
CPU board
connection
connector (CN2)
LCD board
connection
connector (CN6)
Touch panel signal
Key switch signal
Front light control signal
LCD data bus
LCD controlasignal
LCD board
connection
connector (CN5)
Data bus
Video RAM
(SDRAM)
Figure 5.6 LCD Control Block
38
LCD Board
(0,0)
(239,319)
SW1
SW3
SW2
CPU board
connection
connector (CN1)