UM61512AS-20 datasheet(4/16 Pages) UMC

Part #	UM61512AS-20

Description	64K X 8 BIT HIGH SPEED CMOS SRAM

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Manufacturer	UMC [UMC Corporation]

Direct Link	http://www.umc.com

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UM61512A

4

Truth Table

Mode

CE1

CE2

OE

WE

I/O Operation

Supply Current

Standby

H

X

High Z

ISB, ISB1

X

L

X

High Z

ISB, ISB2

Output Disable

L

H

High Z

ICC1

Read

L

H

L

H

DOUT

ICC1

Write

L

H

X

L

DIN

ICC1

Note: X = H or L

Capacitance (TA = 25

°C, f = 1.0 MHz)

Symbol

Parameter

Min.

Max.

Unit

Conditions

CIN *

Input Capacitance

8

pF

VIN = 0V

CI/O *

Input/Output Capacitance

10

pF

VI/O = 0V

* These parameters are sampled and not 100% tested.

AC Characteristics (TA = 0

°C to +70°C, VCC = 5V ± 10%)

Symbol

Parameter

UM61512A-15

UM61512A-20

UM61512A-25

Unit

Min.

Max.

Min.

Max.

Min.

Max.

Read Cycle

tRC

Read Cycle Time

15

-

20

-

25

-

ns

tAA

Address Access Time

-

15

-

20

-

25

ns

tACE1

Chip Enable Access Time

CE1

-

15

-

20

-

25

ns

tACE2

CE2

-

15

-

20

-

25

ns

tOE

Output Enable to Output Valid

-

7

-

9

-

12

ns

tCLZ1

Chip Enable to Output in Low Z

CE1

5

-

5

-

5

-

ns

tCLZ2

CE2

5

-

5

*

5

-

ns

tOLZ

Output Enable to Output in Low Z

2

-

2

-

2

-

ns

tCHZ1

Chip Disable to Output in High Z

CE1

-

10

-

10

-

15

ns

tCHZ2

CE2

-

10

-

10

-

15

ns

tOHZ

Output Disable to Output in High Z

2

9

2

9

2

10

ns

tOH

Output Hold from Address Change

3

-

5

-

5

-

ns

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