Rohm BR24C32F / BR24C64 / BR24C64F free download

File name BR24C32-64 .pdf

BR24C32 / BR24C32F / BR24C64 / BR24C64F Memory ICs I2C BUS compatible serial EEPROM BR24C32 / BR24C32F / BR24C64 / BR24C64F The BR24C32 and BR24C64 series are 2-wire (I2C BUS type) serial EEPROMs which are electrically programmable. I2C BUS is a registered trademark of Philips. Features 1) 4k x 8 bits (32k) serial EEPROM. (BR24C32 / F) 8k x 8 bits (64k) serial EEPROM. (BR24C64 / F) 2) Two wire serial interface. (2Byte Address: BR24E16) 3) Operating voltage range: 2.7V 5.5V 4) Low current consumption Active (at 5V) : 2.0mA (Typ.) Standby (at 5V) : 1.0µA (Typ.) 5) Auto erase and auto complete functions can be used during write operations. 6) Page write function. BR24C32 / F: 32 bytes BR24C64 / F: 64 bytes 7) DATA security Write protect feature Inhibit to WRITE at low Vcc 8) Noise filters at SCL and SDA pins. 9) Address can be incremented automatically during read operations. 10) Compact packages. 11) Rewriting possible up to 100,000 times. 12) Data can be stored for ten years without corruption. Absolute maximum ratings (Ta=25°C) Parameter Supply voltage Power dissipation Storage temperature range Operating temperature range Terminal voltage Symbol VCC Pd Tstg Topr - Limits -0.3~+6.5 450(SOP8) 800(DIP8) -65~+125 -40~+85 -0.3~VCC+0.3 1 2 Unit V mW °C °C V 1 Reduced by 4.5mW for each increase in Ta of 1°C over 25°C. 2 Reduced by 8.0mW for each increase in Ta of 1°C over 25°C. Recommended operating conditions (Ta=25°C) Parameter Supply voltage Input voltage Symbol VCC VIN Limits 2.7~5.5 0~VCC Unit V V BR24C32 / BR24C32F / BR24C64 / BR24C64F Memory ICs Block diagram BR24C32 / F A0 1 32kbits EEPROM ARRAY 8 8bits VCC 12bits A1 2 ADDRESS SLAVE·WORD 12bits DECODER ADDRESS REGISTER START STOP ACK DATA REGISTER 7 WP A2 3 CONTROL LOGIC 6 SCL GND 4 HIGH VOLTAGE GEN. Vcc LEVEL DETECT 5 SDA BR24C64 / F A0 1 64kbits EEPROM ARRAY 8 8bits VCC 13bits A1 2 ADDRESS SLAVE·WORD 13bits DECODER ADDRESS REGISTER START STOP ACK DATA REGISTER 7 WP A2 3 CONTROL LOGIC 6 SCL GND 4 HIGH VOLTAGE GEN. Vcc LEVEL DETECT 5 SDA Pin descriptions Pin name VCC GND A0, A1, A2 SCL SDA WP I/O - - I I I/O I Power supply Ground (0V) Function Slave address set Serial clock input Slave and word address, serial data input, serial data output Write protect input An open drainn output requires a pull-up resistor. BR24C32 / BR24C32F / BR24C64 / BR24C64F Memory ICs Electrical characteristics DC characteristics (Unless otherwise noted, Ta=-4085°C, VCC=2.75.5V) Parameter "HIGH" Input voltage "LOW" Input voltage "LOW" Output voltage Input leakage current Output leakage current Operating current Standby current Symbol VIH VIL VOL ILI ILO ICC ISB Min. 0.7VCC - - -1.0 -1.0 - - Typ. - - - - - - - Max. - 0.3VCC 0.4 1.0 1.0 3.0 3.0 Unit V V V µA µA mA µA IOL=3.0mA(SDA) VIN=0V~VCC VOUT=0V~VCC VCC=5.5V, fSCL=400kHz VCC=5.5V, SDA SCL=VCC A0, A1, A2=GND, WP=GND Conditions - - This product is not designed for protection against radioactive rays. Operating timing