Datasheet 2 I C BUS 2kbit + 2kbit 2ports serial EEPROM BU99022NUX-3 Description 2 BU99022NUX-3 series is 2kbit + 2kbit 2ports serial EEPROM of I C BUS interface method. FEATURES 2kbit + 2kbit 2ports serial EEPROM Other devices than EEPROM can be connected to the same port, saving microcontroller port 1.7V5.5V single power source action most suitable for battery use 1.7V5.5wide limit of action voltage, possible FAST MODE 400KHz action Page write mode useful for initial value write at factory shipment Auto erase and auto end function at data write Low current consumption Write mistake prevention function Write (write protect) function added (only port2 EEPROM) Write mistake prevention function at low voltage VSON008X2030 small package Data rewrite up to 1,000,000 times Data kept for 40 years Noise filter built in SCL / SDA terminal Shipment data all address FFh www.rohm.com TSZ02201-0R2R0G100010-1-2 1/23 2011 ROHM Co., Ltd. All rights reserved. 2011.12.19 Rev.001 TSZ2211114001 Datasheet BU99022NUX-3 Absolute maximum rating (Ta=25) Memory cell characteristics (Ta=25, Vcc=1.75.5V) Parameter symbol Limits Unit Parameter Unit Limits Impressed voltage V -0.3+6.5 V CC Min. Typ. Max Permissible *1 Pd 300 mW *1 Write/Erase cycle 1,000,000 cycles dissipation *1 Storage temperature range Tstg 65+150 Data retention 40 Years * 1 ction temperature range Topr 40+85 Not 100% TESTED *2 Terminal voltage 0.3Vcc+1.0 V Recommended operating condition *3 Junction Temperature Tjmax 150 Parameter Symbol Limits Unit *1 When using at Ta=25 or higher, 3.0mW to be reduced per 1. 1.75.5 Power source voltage Vcc V *2 The Max value of Terminal Voltage is not over 6.5V. When the pulse width is 50ns or less, the Min value of Terminal Voltage is not under -0.8V. 0Vcc Input voltage V IN *3 Junction temperature at the storage condition. DC operating characteristics (Unless otherwise specified, Ta=40+85VCC=1.75.5V) Specification Parameter Symbol Unit Test Condition Min. Typ. Max. Hinput V 0.7Vcc Vcc+1.0 V IH1 voltage1 Linput *1 V 0.3 0.3Vcc V IL1 voltage1 Loutput I =3.0mA, 2.5VVcc5.5V OL V 0.4 V OL1 voltage1 (SDA1,SDA2) Loutput I =0.7mA, 1.7VVcc2.5V OL V 0.2 V OL2 voltage2 (SDA1,SDA2) Input leak I 1 1 A V =0Vcc LI IN current Output leak I 1 1 A V =0Vcc (SDA1,SDA2) LO OUT current Vcc1=5.5V,f =400kHz, t =5ms, SCL WR I 2.0 CCw1 Bytewrite Pagewrite mA Vcc2=5.5V,f =400kHz, t =5ms, SCL WR I 2.0 CCw2 Bytewrite Pagewrite Operating Current Vcc1=5.5V,f =400kHz SCL I 0.5 CCr1 Random read, current read, sequential read mA Vcc2=5.5V,f =400kHz SCL I 0.5 CCr2 Random read, current read, sequential read I 2.0 Vcc1=5.5V, SDA1SCL1=Vcc SB1 Standby A current Vcc2=5.5V, SDA2SCL2=Vcc I 2.0 SB2 WP2=GND This product is not designed for protection against radio active rays. *1 When the pulse width is 50ns or less, it is -0.8V. www.rohm.com TSZ02201-0R2R0G100010-1-2 2/23 2011 ROHM Co., Ltd. All rights reserved. 2011.12.19 Rev.001 TSZ2211114001