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2010.09 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

High Reliability Series Serial EEPROMs

WL-CSP EEPROM family

BU9844GUL-W

●

Description

BU9844GUL-W series is a serial EEPROM of I

available at 400kHz.

●

Features

1) Completely conforming to the world standard I

and serial data(SDA)

2) Other devices than EEPROM can be connected to the same port, saving microcontroller port.

3) Actions available at 400kHz clock (1.7V～5.5V)

4) 1.7～5.5V single power source action most suitable for battery use.

5) Page write mode useful for initial value write at factory shipment.

6) Auto erase and auto end function at data rewrite.

7) Low current consumption

At write action (5V)

: 1.2mA (Typ.)

At read action (5V)

: 0.2mA (Typ.)

At standby action (5V) : 0.1μA (Typ.)

8) Write mistake prevention function

Write (write protect) function added.

Write mistake prevention function at low voltage.

9) Data rewrite up to 1,000,000times.

10) Data kept for 40 years.

11) Noise filter built in SCL / SDA terminal

12) Shipment data all address FFh.

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Page write

Product number

Number of pages

BU9844GUL-W

16Byte

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BU9844GUL-W

Type

Capacity

Bit format

Power source voltage

Package

BU9844GUL-W

16Kbit

2048×8

1.7~5.5V

VCSP50L1

●

Absolute maximum ratings (Ta=25℃)

Parameter

Symbol

Ratings

Unit

Impressed voltage

Vcc

-0.3~+6.5

V

Permissible dissipation

Pd

220

*1

mW

Storage temperature range

Tstg

-65~125

℃

Operating temperature range

Topr

-40~85

℃

Terminal voltage

-

-0.3~Vcc+1.0

V

*

When using at Ta=25℃ or higher, 2.2mW (*1) to be reduced per 1℃

●

Recommended action conditions

Parameter

Symbol

Ratings

Unit

Power source voltage

Vcc

1.7~5.5

V

Input voltage

Vin

0~Vcc

No.10001EAT18