SH7721 datasheet(925/1524 Pages) RENESAS

925 / 1524 page

Section 26

LCD Controller (LCDC)

Rev. 3.00 Jan. 18, 2008 Page 863 of 1458

REJ09B0033-0300

Section 26

LCD Controller (LCDC)

A unified memory architecture is adopted for the LCD controller (LCDC) so that the image data

for display is stored in system memory. The LCDC module reads data from system memory, uses

the palette memory to determine the colors, then puts the display on the LCD panel. It is possible

to connect the LCDC to the LCD module* other than microcomputer bus interface types and

NTSC/PAL types and those that apply the LVDS interface.

Note: * LCD module can be connected to the LVDS interface by using the LSI with LVDS

conversion LSI.

26.1

Features

The LCDC has the following features.

• Panel interface

 Serial interface method

 Supports data formats for STN/dual-STN/TFT panels (8/12/16/18-bit bus width)*1

• Supports 4/8/15/16-bpp (bits per pixel) color modes

• Supports 1/2/4/6-bpp grayscale modes

• Supports LCD-panel sizes from 16 × 1 to 1024 × 1024*2

• 24-bit color palette memory (16 of the 24 bits are valid; R:5/G:6/B:5)

• STN/DSTN panels are prone to flicker and shadowing. The controller applies 65536-color

control by 24-bit space-modulation FRC (Frame Rate Controller) with 8-bit RGB values for

reduced flicker.

• Dedicated display memory is unnecessary using part of the synchronous DRAM (area 3) as the

VRAM to store display data of the LCDC.

• The display is stable because of the large 2.4-kbyte line buffer

• Supports the inversion of the output signal to suit the LCD panel's signal polarity

• Supports the selection of data formats (the endian setting for bytes, packed pixel method) by

• An interrupt can be generated at the user specified position (controlling the timing of VRAM

update start prevents flicker)

• A hardware-rotation mode is included to support the use of landscape-format LCD panels as

portrait-format LCD panels (the horizontal width of the panel before rotation must be within

320 pixels (see table 26.4.)

SH7721 Datasheet(PDF) 925 Page - Renesas Technology Corp