Datasheet Serial EEPROM Series Standard EEPROM WLCSP EEPROM BU9829GUL-W (16Kbit) General Description BU9829GUL-W is Serial EEPROM built-in LDO regulator by SPI BUS interface. Features Package W(Typ.) x D(Typ.) x H(Max.) EEPROM PART 2,048 words8 bits architecture serial EEPROM Wide operating voltage range (1.6V to 3.6V) Serial Peripheral Interface Self-timed write cycle with automatic erase Low Power consumption Write (3.6V) : 1.5mA (Typ.) Read (3.6V) : 0.5mA (Typ.) Standby (3.6V) : 0.1A (Typ.) Auto-increment of registers address for Read mode VCSP50L1 32 byte Page Write mode 1.74mm x 1.65mm x 0.55mm DATA security Defaults to power up with write-disabled state Software instructions for write-enable/disable Block writes protection by status register Write inhibit at low Vcc Initial data FFh in all address, 00h in status register and 10 in VSET 1:0 . Data retention: 10 years Endurance : 100,000 erase/write cycles LDO REGULATOR PART Low power consumption Standby (3.6V) : 0.1 A (Typ.) Operation (3.6V) : 0.1mA (Typ.) Power on/off by enable pin Initial LDO output voltage 2.9V Setting output voltage by EEPROM command (VSET WRITE) Typical Application Circuit Vcc2(3.3V) Vcc1(1.8V) RPU BU9829GUL-W RPU Vcc1 CSB SCK SO SI Vcc2 (0.1F) (0.1F) VOUT LDOEN C C CL GND RPD RPD Product structure : Silicon monolithic integrated circuit This product is not designed protection against radioactive rays www.rohm.com TSZ02201-0R2R0G100400-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/23 TSZ2211114001 28.AUG.2012 Rev.001DatasheetDatasheet BU9829GUL-W (16Kbit) Block Diagram VOLTAGE INSTRUCTION CSB DETECTION DECODE CONTROL CLOCK SCK GENERATION WRITE HIGH VOLTAGE GENERATOR INHIBITION SI INSTRUCTION ADDRESS ADDRESS 11bit 11bit REGISTER REGISTER DECODER 16,384 bit EEPROM DATA R/W 8bit 8bit SO REGISTER AMP 2bit + LDOEN B.R VOUT AMP VOUT SETTING REGISTER RESISTOR Pin Configuration (BOTTOM VIEW) C C1 C2 C3 B B1 B2 B3 INDEX POST A A1 A2 A3 1 3 2 Pin Descriptions Land Pin I/O Function No. Name A1 Vcc1 Power Supply (EEPROM) A2 CSB IN Chip Select Control A3 SCK IN Serial Data Clock Input B1 Vcc2 Power Supply (LDO) B2 SI IN Start Bit, Op.code, Address, Serial Data Input B3 SO OUT Serial Data Output C1 V OUT LDO Regulator Output OUT C2 GND Ground (0V) C3 LDOEN IN LDO Regulator Enable www.rohm.com TSZ02201-0R2R0G100400-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/23 TSZ2211115001 28.AUG.2012 Rev.001