D43257B 查看數據表（PDF） - NEC => Renesas Technology

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D43257B

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

NEC => Renesas Technology 

µPD43257B

DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted)

Parameter Symbol

Test condition

µPD43257B-xxL

µPD43257B-xxLL Unit

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

Input leakage

ILI VIN = 0 V to VCC

–1.0

+1.0 –1.0

+1.0 µA

current

I/O leakage

ILO VI/O = 0 V to VCC, /CE1 = VIH or

–1.0

+1.0 –1.0

+1.0 µA

current

CE2 = VIL or /WE = VIL

Operating

ICCA1 /CE1 = VIL, CE2 = VIH,

µPD43257B-70

45

45 mA

supply current

Minimum cycle time, II/O = 0 mA µPD43257B-85

45

45

ICCA2 /CE1 = VIL, CE2 = VIH, II/O = 0 mA

10

10

ICCA3 /CE1 ≤ 0.2 V, CE2 ≥ VCC – 0.2 V, Cycle = 1 MHz,

10

10

II/O = 0 mA, VIL ≤ 0.2 V, VIH ≥ VCC – 0.2 V

Standby

ISB /CE1 = VIH or CE2 = VIL,

3

3 mA

supply current ISB1 /CE1 ≥ VCC − 0.2 V, CE2 ≥ VCC − 0.2 V

1.0 50

0.5 15 µA

ISB2 CE2 ≤ 0.2 V

1.0 50

0.5 15

High level

VOH1 IOH = –1.0 mA

2.4

2.4

V

output voltage VOH2 IOH = –0.1 mA

VCC–0.5

VCC–0.5

Low level

VOL IOL = 2.1 mA

0.4

0.4 V

output voltage

Remarks 1. VIN : Input voltage

VI/O : Input / Output voltage

2. These DC characteristics are in common regardless of package types and access time.

Data Sheet M10693EJ7V0DS00

7

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