D43257B View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

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D43257B

256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT

NEC => Renesas Technology 

µPD43257B

Low VCC Data Retention Characteristics (TA = 0 to 70 °C)

Parameter

Symbol

Test Condition

Data retention

supply voltage

Data retention

supply current

Chip deselection

to data retention mode

Operation recovery time

VCCDR1 /CE1 ≥ VCC − 0.2 V,

CE2 ≥ VCC − 0.2 V

VCCDR2 CE2 ≤ 0.2 V

ICCDR1

VCC = 3.0 V, /CE1 ≥ VCC − 0.2 V,

CE2 ≥ VCC − 0.2 V

ICCDR2 VCC = 3.0 V, CE2 ≤ 0.2 V

tCDR

tR

µPD43257B-xxL

µPD43257B-xxLL

Unit

MIN. TYP. MAX. MIN. TYP. MAX.

2.0

5.5 2.0

5.5

V

2.0

5.5 2.0

5.5

0.5

20 Note1

0.5

7 Note2

µA

0.5

20 Note1

0.5

7 Note2

0

0

ns

5

5

ms

Notes 1. 3 µA (TA ≤ 40 °C)

2. 2 µA (TA ≤ 40 °C), 1 µA (TA ≤ 25 °C)

14

Data Sheet M10693EJ7V0DS00

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