Lcd; Block Description - Renesas SH7727 General Information Manual

R0P7727TH003TRKE General Information Manual

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 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 with an internal LCD controller is
used for the LCD display VRAM (Video RAM).
Display data is stored in the internal SDRAM of the LCD controller in the order of coordinates (0,0), (1,0), ...
and (239, 319) from the address set in the register (LDSARU) of the LCD controller. 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 SH7727 Hardware
Manual for details on the LCD controller.
SH7727
LCD
controller
Power supply
controller
(H8/3048F-ONE)
Data bus
VideoRam
(SDRAM)
LCD board connection
connector (CN5)
LCD data bus
LCD control signal
LCD board connection
connector (CN6)
Touch panel signal
Key switch signal
Front light control signal
Figure 5.6 LCD Control Block
SW2
CPU board connection
connector (CN2)
31
Functional Blocks
LCD board
(0,0)
(239,319)
SW1 SW3
CPU board
connection
connector (CN1)