AS7C256-12 datasheet(3/8 Pages) ALSC

Part #	AS7C256-12

Description	High Performance 32Kx8 CMOS SRAM

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Manufacturer	ALSC [Alliance Semiconductor Corporation]

Direct Link	https://www.alliancememory.com

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3 / 8 page

AS7C256

AS7C256L

3

Parameter

Symbol

Min

Typ

Max

Unit

Supply Voltage

VCC

4.5

5.0

5.5

V

GND

0.0

V

Input Voltage

VIH

2.2

–

VCC+1

V

VIL

–0.5*

–

0.8

V

*VIL min = –3.0V for pulse width less than tRC/2.

Parameter

Symbol Test Conditions

-10

-12

-15

-20

-25

-35

Unit

Min Max Min Max Min Max Min Max Min Max Min Max

Input Leakage

Current

|I

LI|

VCC = Max,

Vin = GND to VCC

–1–1–1

µA

Output Leakage

Current

|I

LO|

CE = VIH, VCC = Max,

Vout = GND to VCC

–1–1–1

µA

Operating Power

Supply Current

ICC

CE = VIL, f = fmax,

Iout = 0 mA

–120

–115

–110

–

100

–

90

–

80

mA

L

–

115

–110

–105

–

95

–

85

–

75

mA

Standby

Power Supply

Current

ISB

CE = VIH, f = fmax

–45–

40

–

30

–

30

–25

–

25

mA

L

–

40

–

35

–

25

–

25

–

20

–

20

mA

ISB1

CE > VCC–0.2V, f = 0,

Vin ≤ 0.2V or

Vin ≥ VCC–0.2V

–

2.0

–

2.0

–

2.0

–

2.0

–

2.0

–

2.0

mA

L

–

0.5

–

0.5

–

0.5

–

0.5

–

0.5

–

0.5

mA

Output Voltage

VOL

IOL = 8 mA, VCC = Min

–

0.4

–

0.4

–

0.4

–

0.4

–

0.4

–

0.4

V

VOH

IOH = –4 mA, VCC = Min

2.4

–

2.4

–

2.4

–

2.4

–

2.4

–

2.4

–

V

Parameter

Symbol

Signals

Test Conditions

Max

Unit

Input Capacitance

CIN

A, CE, WE, OE

Vin = 0V

5

pF

I/O Capacitance

CI/O

I/O

Vin = Vout = 0V

7

pF

RECOMMENDED OPERATING CONDITIONS

(Ta = 0°C to +70°C)

DC OPERATING CHARACTERISTICS

(VCC = 5V±10%, GND = 0V, Ta = 0°C to +70°C)

1

CAPACITANCE

(f = 1 MHz, Ta = Room Temperature, VCC = 5V)

2

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AS7C256-12 Datasheet(PDF) 3 Page - Alliance Semiconductor Corporation

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