Datasheet Summary
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD43257B
256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT
Description
The µPD43257B is a high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM. Battery backup is available. And the µPD43257B has two chip enable pins (/CE1, CE2) to extend the capacity. The µPD43257B is packed in 28-pin plastic DIP and 28-pin plastic SOP.
Features
- 32,768 words by 8 bits organization
- Fast access time: 70, 85 ns (MAX.)
- Low VCC data retention: 2.0 V (MIN.)
- Two Chip Enable inputs: /CE1, CE2
Part number Access time ns (MAX.) Operating supply Operating ambient voltage V temperature °C 0 to 70 At operating mA (MAX.) 45 45 Supply current At standby...
