DESCRIPTION
The SED1374 is a color/monochrome LCD graphics controller with an embedded 40K Byte SRAM display buffer. The high integration of the SED1374 provides a low cost, low power, single chip solution to meet the requirements of embedded markets such as Office Automation equipment, Mobile Communications devices, and Hand-Held PCs where board size and battery life are major concerns.

FEATURES
Memory Interface
• Embedded 40K byte SRAM display buffer.

CPU Interface
• Direct support of the following interfaces:
    Hitachi SH-3.
    Hitachi SH-4.
    Motorola M68K.
    MPU bus interface with programmable READY.
• Direct memory mapping of internal registers.
• CPU write buffer.

Display Support
• 4/8-bit monochrome LCD interface.
• 4/8-bit color LCD interface.
• 16-bit color LCD interface with minimal external curcuitry.
• Single-panel, single-drive passive displays.
• Dual-panel, dual-drive passive displays.
• Active Matrix TFT / TFD interface.
• Example resolutions:
    640x480 at a color depth of 1 bpp
    640x240 at a color depth of 2 bpp
    320x240 at a color depth of 4 bpp
    240x160 at a color depth of 8 bpp

Clock Source
• Single clock input for both pixel and memory clocks.
• The SED1374 clock source can be internally divided down for a higher frequency clock input.
• Dynamic switching of memory clocks in portrait mode.

Display Modes
• Hardware Portrait Mode: direct hardware rotation of display image for portrait mode display.
• 1/2/4 bit-per-pixel (bpp), 2/4/16-level grayscale display.
• 1/2/4/8 bit-per-pixel, 2/4/16/256-level color display.
• Up to 16 shades of gray by FRM on monochrome passive LCD panels.
• 256 simultaneous of 4096 colors on color passive and active matrix LCD panels.
• Split screen display for all panel modes allows two different images to be simultaneously displayed.
• Virtual display support (displays images larger than the panel size through the use of panning).

Power Down Modes
• Hardware and software Suspend modes.
• LCD power-down sequencing.

General Purpose IO Pins
• Five General Purpose Input / Output pins are available.

Operating Voltage
• 2.7 volts to 5.5 volts.

Package
• 80-pin QFP14 surface mount package.