Low Power CMOS SRAM

32K X8 Bits

UC62WV0256

-35/-55/-70

PIN DESCRIPTION

Name

Type

Function

A0 – A14

Input

Address inputs for selecting one of the 32768 x 8 bit words in the RAM

CE\

Input

CE\ is active LOW. Chip enable must be active when data read from or write to the device. If chip

enable is not active, the device is deselected and not in a standby power down mode. The DQ

pins will be in high impedance state when the device is deselected.

WE\

Input

The Write enable input is active LOW and controls read and write operations. With the chip

selected, when WE\ is HIGH and OE\ is LOW, output data will be present on the DQ pins, when

WE\ is LOW, the data present on the DQ pins will be written into the selected memory location.

OE\

Input

The output enable input is active LOW. If the output enable is active while the chip is selected

and the write enable is inactive, data will be present on the DQ pins and they will be enabled.

The DQ pins will be in the high impedance state when OE\ is inactive.

DQ0 – DQ7

I/O

These 8 bi0directional ports are used to read data from or write data into the RAM.

Vcc

Power

Power Supply

Gnd

Power

Ground

TRUTH TABLE

Mode

WE\

CE\

OE\

I/O state

Vcc Current

Not Selected

X

H

X

High Z

Output Disabled

H

L

H

High Z

Read

H

L

L

Write

L

L

X

ABSOLUTE MAXIMUM RATINGS

(1)

SYMBOL

PARAMETER

RATING

UNIT

Terminal Voltage with

Respect to GND

V

Temperature Under Bias

-40 to 125

℃

Storage Temperature

-50 to 150

℃

PT

Power Dissipation

50mW

W

DC Output Current

10

mA

1. Stresses greater than those listed under ABSOLUTE

MAXIMUM RATINGS may cause permanent damage to the

device. This is a stress rating only and functional operation of

the device at these or any other conditions above those

indicated in the operational sections of this specification is not

implied. Exposure to absolute maximum rating conditions for

extended periods may affect reliability.

OPERATING RANGE

RANGE

AMBIENT

TEMPERATURE

Commercial

0℃ to 70℃

2.0V ~ 5.6V

Industrial

-25℃ to 85℃

2.0V ~ 5.6V

CAPACITANCE

SYMBOL

PARAMETER

CONDITIONS MAX.

UNIT

CIN

Input

Capacitance

VIN=0V

6

pF

CDQ

Input/Output

Capacitance

VDQ

8

pF

1. This parameter is guaranteed and not 100% tested.

U-Chip Technology Corp. LTD.

Revision 2.0

Reserves the right to modify document contents without notice.

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