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UPD4265405-A50 - 64M-BIT DYNAMIC RAM

Download the UPD4265405-A50 datasheet PDF. This datasheet also covers the UPD4264405 variant, as both devices belong to the same 64m-bit dynamic ram family and are provided as variant models within a single manufacturer datasheet.

General Description

The µPD4264405, 42S65405, 4265405 are 16,777,216 words by 4 bits CMOS dynamic RAMs with optional EDO.

EDO is a kind of the page mode and is useful for the read operation.

Besides, the µPD42S65405 can execute CAS before RAS self refresh.

Key Features

  • EDO (Hyper page mode).
  • 16,777,216 words by 4 bits organization.
  • Single +3.3 V ± 0.3 V power supply.
  • Fast access and cycle time Part number Power consumption Active (MAX. ) 360 mW Access time (MAX. ) 50 ns R/W cycle time (MIN. ) 84 ns EDO (Hyper page mode) cycle time (MIN. ) 20 ns µPD4264405-A50 µPD42S65405-A50, 4265405-A50 µPD4264405-A60 µPD42S65405-A60, 4265405-A60 468 mW 324 mW 396 mW 60 ns 104 ns 25 ns.
  • The µPD42S65405 can execute CAS before R.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UPD4264405-NEC.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number UPD4265405-A50
Manufacturer NEC
File Size 268.90 KB
Description 64M-BIT DYNAMIC RAM
Datasheet download datasheet UPD4265405-A50 Datasheet

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.

View original datasheet text
DATA SHEET MOS INTEGRATED CIRCUIT µPD4264405, 42S65405, 4265405 64 M-BIT DYNAMIC RAM 16 M-WORD BY 4-BIT, EDO Description The µPD4264405, 42S65405, 4265405 are 16,777,216 words by 4 bits CMOS dynamic RAMs with optional EDO. EDO is a kind of the page mode and is useful for the read operation. Besides, the µPD42S65405 can execute CAS before RAS self refresh. These are packaged in 32-pin plastic TSOP (II) and 32-pin plastic SOJ. Features • EDO (Hyper page mode) • 16,777,216 words by 4 bits organization • Single +3.3 V ± 0.3 V power supply • Fast access and cycle time Part number Power consumption Active (MAX.) 360 mW Access time (MAX.) 50 ns R/W cycle time (MIN.) 84 ns EDO (Hyper page mode) cycle time (MIN.