UPD43257B
Overview
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.
- 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 At data retention µA (MAX.) 50 15 µA (MAX.) Note 3 2 µPD43257B-xxL µPD43257B-xxLL 70, 85
- 5 to 5.5 Note TA ≤ 40 °C, VCC = 3.0 V Version X This Data sheet can be applied to the version X. This version is identified with its lot number. Letter X in the fifth character position in a lot number signifies version X.
