CMOS GRAPHIC LCD CONTROLLER
SED1335
s DESCRIPTION
CMOS GRAPHIC LCD CONTROLLER
For Medium-Scale LCD
• Low Operating Voltage 2.7 to 5.0V •• On-Chip ...
Description
SED1335
s DESCRIPTION
CMOS GRAPHIC LCD CONTROLLER
For Medium-Scale LCD
Low Operating Voltage 2.7 to 5.0V On-Chip Character Generator ROM
The SED1335 is a CMOS low-power dot matrix liquid crystal graphic display controller. The device stores in external RAM display data sent by an 8-bit microcomputer, and generates all the signals required by the LCD drivers. The LSI incorporates an internal character generator ROM which supports user-defined characters (also an external CGROM can be supported).
The SED1335 can be interfaced to high-speed microprocessors such as the Intel family or Motorola family. The controller supports a set of rich commands that will allow the user to create a layered display of characters and graphics.
Also, the controller functions as a pipeline buffer between the MPU and display memory so that low-cost, medium-speed SRAM can be used.
s FEATURES
CMOS low-power graphic and character display controller
Selectable MPU interface is compatible with both the Intel family and the Motorola family
Smooth scrolling support:
Horizontal and vertical scroll Scrolling of selected areas of the display
Multimode display:
2 layers of overlapping characters and graphics 3 layers of overlapping graphics
Selectable display synthesis:
Inverse video Flashing display, cursor on/off/blink Under and bar cursor, block cursor Simple animation
Programmable cursor
s SYSTEM BLOCK DIAGRAM
Internal character generator ROM Supports external character generato...
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