SED1374 Datasheet, PDF (7/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

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SED1374
SED1374 EMBEDDED MEMORY COLOR LCD CONTROLLER
October 1998
s 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.
Products requiring a “Portrait” display can take advantage of the Hardware Portrait Mode feature of the SED1374.
Virtual and Split Screen are just some of the display modes supported. The above features, combined with the
Operating System independence of the SED1374, make it the ideal solution for a wide variety of applications.
s 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.
X26A-C-001-05
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