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MSM514221B - DRAM / FAST PAGE MODE TYPE

Key Features

  • Single power supply: 5 V ± 10%.
  • 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/60 ns Access time 25 ns/30 ns/50 ns.
  • Functional compatibility with OKI MSM518221.
  • Self refresh (No refresh control is required).
  • Package options: 16-pin 300 mil plastic DIP (DIP16-P-300-2.54-W1) 26/20-pin 300 mil plastic SOJ (SOJ26/20-P-300-1.27) 20-p.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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E2L0029-17-Y1 ¡ Semiconductor MSM514221B ¡ Semiconductor 262,263-Word ¥ 4-Bit Field Memory This version: Jan. 1998 MSM514221B Previous version: Dec. 1996 DESCRIRTION The OKI MSM514221B is a high performance 1-Mbit, 256K ¥ 4-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 MSM514221B 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. Each of the 4-bit planes has separate serial write and read ports.