BR24L64 Datasheet | ROHM

Features - 32k bit serial EEPROM organized as 4k × 8bit (BR24L32) 64k bit serial EEPROM organized as 8k × 8bit (BR24L64) - 2 wire bus serial interface (2 byte Address) - Low operating voltage range (2V operating) Read : 1.8~5.5V Write : 1.8~5.5V - Low current consumption Active : 3m A MAX Standby : 2µA MAX - Clock frequency : 100k Hz MAX (1.8~5.5V) 400k Hz MAX (2.5~5.5V) - Write cycle time : 5ms MAX - Address auto-increment function during read operation - Automatic erase-before-write function during write operation - Page write function : 32byte - Inadvertent write protection function Inadvertent write protection at low voltage (Vcc Lock-out function) WP (Write Protect) function - Schmitt trigger circuit and noise filter are built into SCL and SDA pins - 1,000,000 write cycle typical - 40 years data retention - Operating temperature range : -40~85˚C Pin Configurations A0 1 A1 2 A2 3 GND 4 8 Vcc 7 WP 6 SCL 5 SDA - DIP8/SOP8/SOP-J8/SSOP-B8 DIP8/SOP8 (Only BR24L64) Pin Functions Pin Names A0, A1, A2 GND SDA SCL WP Vcc Ground Serial Data Input/Output Serial Data Clock Write Protect Power Supply Functions Slave Address Inputs - Under development Block Diagram 32~64k bit EEPROM Array A0 A1 A2 12bit: BR24L32 13bit: BR24L64 8bit 12bit: BR24L32 13bit: BR24L64 WP SCL SDA Address Decoder Slave Words Address Register STOP Data Register START Control Logic ACK High Voltage Generation Voltage Detection . 1.8V L opeow vo ratin ltag e g 1,00 Wri 0,00 te c 0 ycle Serial 2 Wire Interface (I2C BUS Type) Timing chart Byte write...