HD63485

HD63485-------- Description The HD63485 LSI belongs to the ACRTC (advanced CRT controller) family. It provides memory access control to frame buffers for graphic display and drawing. Incorporating bus driver circuits and a DRAM (dynamic RAM) interface, the GMIC allows direct connection to DRAMs with no external circuits. Its main function includes address data latch, DRAM row and column address multi· plexing, supplying RAS, CAS, OE, WE, and other signals, and generating the 2CLK signal for the ACRTC. Using the Hi·BiCMOS process, the HD63485 achieves high speed memory access with low power dissipation. Type of Products Part No. HD63485PS·32 HD63485PS·48 HD63485PS-64 HD63485CP-32 HD63485CP-48 HD63485CP-64 Speed Packaae 32MHz 64·pin Plastic Shrink DIP 48MHz (DP·64S) 64MHz 32MHz 68·pin PLCC 48MHz (CP·68) 64MHz Features Drives frame buffer memory directly (IOL = 24 rnA max) Generates DRAM signal: row and column addresses,RAS, CAS, OE, WE, etc High·speed dot...