r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1704

Manufacturer Part Number

r5s77631ay266bgv

Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series

Manufacturer

Renesas Electronics Corporation.

Section 37 LCD Controller (LCDC)

(TFT module)

The table above shows the states of the power supply, display data, and timing signals for the

typical LCD module in its active and stopped states. Some of the supply voltages described may

not be necessary, because some modules internally generate the power supply required for high-

voltage systems from the logic-level power-supply voltage.

Notes on display-off mode (LCDC stopped):

If LCD module power-supply control-sequence processing is in use by the LCDC or the supply of

power is cut off while the LCDC is in its display-on mode, normal operation is not guaranteed. In

the worst case, the connected LCD module may be damaged.

Operation in hardware-rotation mode is described below. Hardware-rotation mode can be thought

of as using a landscape-format LCD panel instead of a portrait-format LCD panel by placing the

landscape-format LCD panel as if it were a portrait-format panel. Whether the panel is intended

for use in landscape or portrait format is thus no problem. The panel must, however, be within 320

pixels wide.

When making settings for hardware rotation, the following five differences from the setting for no

hardware rotation must be noted. (The following example is for a display at 8 bpp. At 16 bpp, the

amount of memory per dot will be doubled. The image size and register values used for rotation

will thus be different.)

1. The image data must be prepared for display in the rotated panel. (If 240 × 320 pixels will be

2. The register settings for the address of the image data must be changed (LDSARU and

Rev. 1.00 Oct. 01, 2007 Page 1638 of 1956

REJ09B0256-0100

Operating State

(Transitional State)

Stopped State

required after rotation, 240 × 320 pixel image data must be prepared.)

Operation for Hardware Rotation

Power Supply for

Display Data,

Timing Signal

LCD_CL2, LCD_CL1,

LCD_M_DISP, LCD_D

Power Supply for High-

Voltage Systems