MSM51V8222A

E2L0055-28-Z2 ¡ Semiconductor MSM51V8222A ¡ Semiconductor 262,214-Word ¥ 8-Bit Field Memory This version: Dec. 1998 MSM51V8222A Previous version: Mar. 1998 DESCRIPTION The OKI MSM51V8222A is a high performance 2-Mbit, 256K ¥ 8-bit, Field Memory. It is designed for high-speed serial access applications such as HDTVs, conventional NTSC TVs, VTRs, digital movies and Multi-media systems. It is a FRAM for wide or low end use as general commodity TVs and VTRs, exclusively. The MSM51V8222A is not designed for the other use or high end use in medical systems, professional graphics systems which require long term picture, and data storage systems and others. The 2-Mbit capacity fits one field of a conventional NTSC TV screen. Two cascaded MSM51V8222As make one frame of the screen: two or more MSM51V8222As can be cascaded directly without any delay devices between them. (Cascading provides larger storage depth or a longer delay). Each of the 8-bit planes has separate serial write and read ports. These employ independent control clocks to support asynchronous read and write operations. Different clock rates are also supported, which allow alternate data rates between write and read data streams. The MSM51V8222A provides high speed FIFO, First-In First-Out, operation without external refreshing: it refreshes its DRAM storage cells automatically, so that it appears fully static to the users. Moreover, fully static type memory cells and decoders for serial access enable the refresh free...