Datasheet Serial EEPROM Series Standard EEPROM WLCSP EEPROM BU99901GUZ-W (32Kbit) General Description 2 BU99901GUZ-W series is a serial EEPROM of I C BUS interface method. Features 2 Completely conforming to the world standard I C BUS. 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) : 0.6mA (Typ.) At read operation (3.6V) : 0.6mA (Typ.) At standby operation (3.6V) : 0.1A (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.) : 1.76mm x 1.05mm x 0.35mm 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 BU99901GUZ-W Number of pages 32Byte Absolute Maximum Ratings (Ta=25) Parameter symbol Ratings Unit Remarks Impressed voltage V -0.3 to +6.5 V CC When using at Ta=25 or higher 2.2mW to be reduced per 1. Permissible dissipation Pd 220 mW Storage temperature range Tstg -65 to +125 Action temperature range Topr -40 to +85 *1 Terminal voltage -0.3 to Vcc+1.0 V *1 The Max value of Terminal Voltage is not over 6.5V. Memory cell characteristics (Ta=25, Vcc=1.7V to 3.6V) Limits Parameter Unit Min. Typ. Max. *1 Number of data rewrite times 100,000 Times *1 Data hold years 40 Years *1 Not 100% TESTED Recommended Operating Ratings Parameter Symbol Rating Unit Write(Ta=-40 to 85) 2.7 to 3.3 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 0 to Vcc V IN Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays www.rohm.com TSZ02201-0R2R0G100280-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/23 TSZ2211114001 4.SEP.2012 Rev.001DatasheetDatasheet BU99901GUZ-W (32Kbit) Electrical characteristics (Unless otherwise specified Ta=-40 to 85V =1.7V to 3.6V) CC Limits Parameter Symbol Unit Condition Min Typ. Max. Input Voltage1 V 0.7Vcc Vcc+1.0 V 2.5VVcc3.6V IH1 Input Voltage1 V -0.3 0.3Vcc V 2.5VVcc3.6V IL1 Input Voltage2 V 0.8Vcc Vcc+1.0 V 1.8VVcc2.5V IH2 Input Voltage2 V -0.3 0.2Vcc V 1.8VVcc2.5V IL2 Input Voltage3 V 0.9Vcc Vcc+1.0 V 1.7VVcc1.8V IH3 Input Voltage3 V -0.3 0.1Vcc V 1.7VVcc1.8V IL3 Output Voltage1 V 0.4 V I =3.0mA , 2.5VVcc3.6V (SDA) OL1 OL Output Voltage2 V 0.2 V I =0.7mA , 1.7VVcc2.5V (SDA) OL2 OL Input Leakage Current I -1 1 AV =0 to Vcc (WP, TEST) LI IN Pull Up Resistance I 6 14 k (SCL,SDA) LI2 Output Leakage Current I -1 1 AV =0 to Vcc (SDA) LO OUT Vcc=3.3V , f =400kHz, tWR=5ms SCL I 4.1 CC1 Current consumption Byte Write, Page Write mA at action Vcc=3.6V , f =400kHz SCL I 1.7 CC2 Random read, Current read, Sequential read Standby Current I 2.0 A Vcc=3.6V, SDA ,SCL=Vcc, WP=GND SB Action timing characteristics (Unless otherwise specified Ta=-40 to 85V =1.7V to 3.6V) CC FAST-MODE STANDARD-MODE 2.5VVcc3.6V 1.7VVcc3.6V Parameter Symbol Unit Min. Typ. Max. Min. Typ. Max. SCL Frequency fSCL 400 100 kHz Data clockHig time tHIGH 0.6 4.0 s Data clockLo time tLOW 1.2 4.7 s *1 SDA, SCL rise time tR 0.3 1.0 s *1 SDA, SCL fall time tF 0.3 0.3 s Start condition hold time tHD:STA 0.6 4.0 s Start condition setup time tSU:STA 0.6 4.7 s Input data hold time tHD:DAT 0 0 ns Input data setup time tSU:DAT 100 250 ns Output data delay time tPD 0.1 0.9 0.2 3.5 s Output data hold time tDH 0.1 0.2 s Stop condition data setup time tSU:STO 0.6 4.7 s Bus release time before transfer start tBUF 1.2 4.7 s Internal write cycle time tWR 5 5 ms Noise removal valid period tI 0.1 0.1 s (SDA,SCL terminal) WP hold time tHD:WP 0 0 ns WP setup time tSU:WP 0.1 0.1 s WP valid time tHIGH:WP 1.0 1.0 s *1 Not 100% tested FAST-MODE and STANDARD-MODE FAST-MODE and STANDARD-MODE are of same actions, and mode is changed. They are distinguished by action speeds. 100kHz action is called STANDARD-MODE, and 400kHz action is called FAST-MODE. This action frequency is the maximum action frequency, so 100kHz clock may be used in FAST-MODE. When power source voltage goes down, action at high speed is not carried out, therefore, at Vcc=2.5V to 5.5V, 400kHz, namely, action is made in FASTMODE. (Action is made also in STANDARD-MODE) Vcc=1.8V to 2.5V is only action in 100kHz STANDARD-MODE. www.rohm.com TSZ02201-0R2R0G100280-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/23 TSZ2211115001 4.SEP.2012 Rev.001