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Datasheet
Serial EEPROM Series Standard EEPROM
WLCSP EEPROM
BU99901GUZ-W
(32Kbit)
BU99901GUZ-W series is a serial EEPROM of I C BUS interface method.
Completely conforming to the world standard I C BUS.
● General Description
2
● Features
2
All controls available by 2 ports of serial clock (SCL) and serial data (SDA)
Other devices than EEPROM can be connected to the same port, saving microcontroller port.
1.7V to 3.6V single power source action most suitable for battery use.
FAST MODE :400kHz at 1.7V to 3.6V
Page write mode useful for initial value write at factory shipment.
Auto erase and auto end function at data rewrite.
Low current consumption
At write operation (3.3V)
At read operation (3.6V)
At standby operation (3.6V)
: 0.6mA (Typ.)
: 0.6mA (Typ.)
: 0.1μA (Typ.)
Write mistake prevention function
Write (write protect) function added
Write mistake prevention function at low voltage
Compact package
W(Typ.) x D(Typ.) x H(Max.)
Data rewrite up to 100,000 times
Data kept for 40 years
Noise filter built in SCL / SDA terminal
Shipment data all address FFh
● Page write
Product number
Number of pages
● Absolute Maximum Ratings (Ta=25 ℃ )
: 1.76mm x 1.05mm x 0.35mm
BU99901GUZ-W
32Byte
Parameter symbol
Ratings
Unit
Remarks
Impressed voltage
V CC
-0.3 to +6.5
V
Permissible dissipation
Storage temperature range
Action temperature range
Pd
Tstg
Topr
220
-65 to +125
-40 to +85
mW
℃
℃
When using at Ta=25 ℃ or higher 2.2mW to be reduced per 1 ℃ .
Terminal voltage
－
-0.3 to Vcc+1.0
*1
V
*1
The Max value of Terminal Voltage is not over 6.5V.
● Memory cell characteristics (Ta=25 ℃ , Vcc=1.7V to 3.6V)
Parameter
Limits
Min. Typ.
Max.
Unit
Number of data rewrite times *1
Data hold years *1
100,000
40
－
－
－
－
Times
Years
*1 Not 100% TESTED
● Recommended Operating Ratings
Parameter
Write(Ta=-40 ℃ to 85 ℃ )
Symbol
Rating
2.7 to 3.3
Unit
Supply Voltage
Write(Ta=-40 ℃ to 70 ℃ )
Vcc
1.8 to 3.3
V
Read(Ta=-40 ℃ to 85 ℃ )
1.7 to 3.6
Input Voltage
V IN
0 to Vcc
V
○ Product structure ： Silicon monolithic integrated circuit
○ This product is not designed protection against radioactive rays
www.rohm.com
?2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 14 ? 001
1/23
TSZ02201-0R2R0G100280-1-2
4.SEP.2012 Rev.001
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