SED1351

SED1351 SED1351 GRAPHICS LCD CONTROLLER s DESCRIPTION The SED1351F is a graphics LCD controller capable of controlling medium to large resolution displays. It transfers data from MPU to external frame buffer RAM and converts this data to display signals for LCD drivers. The SED1351F can display images with 4 gray shades and support display duty cycle as high as 1/ 1024. The SED1351F is designed to achieve high efficiency and data throughput to the LCD. It has a cycle steal mode which allows MPU to access frame buffer RAM without interfering with the display operation. The SED1351F can directly interface with up to eight 64K-bit SRAMs or two 256K-bit SRAMs. The SED1351F can operate with either 5V or 3V power supply. The 5V version chip is the SED1351F0A and the 3V version chip is the SED1351FLB. s FEATURES Low-power CMOS technology 8-bit or 16-bit MPU data interface Direct interface with 80xx, Z80 and 68xxx MPU or 8-bit panel data bus for single panel and 44-bit bus for dual panel Support logical OR of layers and panel division Smooth vertical scrolling Virtual screen display up to 1024 mode (on/off only) generates black & Binary white images mode (on/off and two gray steps) gener Gray ates images with 4 gray shades s SYSTEM BLOCK DIAGRAM Maximum number of rows Binary mode ............ 2048 Gray mode .............. 1024 Maximum number of rows: Single panel ............ 1024 Dual panel ............... 2048 Maximum display sizes when 64K-byte SRAMs a...