SED1335

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...