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LH75400/01/10/11 (Preliminary) User's Guide
13.1 CLCDC Features
The CLCDC features are:
• STN, Color STN, TFT, HR-TFT, and AD-TFT
– Fully programmable timing controls
– Integrated controller for displays with a low level of integration, such as HR-TFT and
AD-TFT.
• Programmable resolution
– Up to VGA (640 × 480 DPI), 12-bit Direct Mode Color
– Up to SVGA (800 × 600 DPI), 8-bit Direct/Palletized Color
– Up to XGA (1,024 × 768 DPI), 4-bit Direct Color/Grayscale.
• Direct or Palletized colors
• Single and dual panels
• Supports Sharp and non-Sharp panels
• CLCDC outputs available as General Purpose Inputs/Outputs (GPIOs) if LCDC
is not needed
• Supported Data Format
– Little Endian
• Additional Features
– Programmable timing for different display panels
– 256-entry, 16-bit palette RAM physically arranged as a 128 × 32-bit RAM
– AC bias signal for STN panels and a data-enable signal for TFT panel.
• Programmable Parameters
– Horizontal
– Horizontal Front Porch (HFP)
– Horizontal Back Porch (HBP)
– Horizontal Synchronization Pulse Width (HSW)
– Number of Pixels per Line (PPL).
– Vertical
– Vertical Front Porch (VFP)
– Vertical Back Porch (VBP)
– Vertical Synchronization Pulse Width (VSW)
– Number of Lines per Panel (LPP).
– Panel-related Parameters
– Display type: STN mono/color or TFT
– Bits-per-pixel
– STN 4-bit Interface Mode
– STN Single Panel Mode
– AC panel bias
– Panel clock frequency
– Number of panel clocks per line
– Signal polarity, active HIGH or LOW
– Little Endian data format
– Interrupt-generation event.
Color Liquid Crystal Display Controller
7/15/03
13-3
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