GENERAL DESCRIPTION
The OKI MSM51V4223C is a high performance 1-Mbit, 256 K × 4-bit, Field Memory. It is designed for highspeed 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 MSM51V4223C 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 1-Mbit capacity fits one field of a conventional NTSC TV screen and cascaded two MSM51V4223Cs make one frame of the screen: more than two MSM51V4223Cs can be cascaded directly without any delay devices among the MSM51V4223Cs. (Cascading of MSM51V4223C provides larger storage depth or a longer delay).

FEATURES
• Single power supply: 3.3 V ± 0.3 V
• 512 Rows × 512 Column × 4 bits
• Fast FIFO (First-in First-out) operation
• High speed asynchronous serial access
   Read/Write cycle time 30 ns/40 ns
   Access time 30 ns/35 ns
• Direct cascading capability
• Write mask function (Input enable control)
• Data skipping function (Output enable control)
• Self refresh (No refresh control is required)
• Package:
   18-pin 300 mil plastic DIP (DIP18-P-300-2.54) (Product: MSM51V4223C-xxRA)
                                                                  xx indicates speed rank.