The EM42BM1684RTC is high speed Synchronous graphic RAM fabricated with ultra high performance CMOS process containing 536,870,912 bits which organized as 8Meg words x 4 banks by 16 bits. The 512Mb DDR SDRAM uses double data rate architecture to accomplish high-speed operation. The data path internally pre-fetches multiple bits and It transfers the data for both rising and falling edges of the system clock. It means the doubled data bandwidth can be achieved at the I/O pins. Available packages: TSOPII 66pin 400mil.