IS24C64A

IS24C32A/B IS24C64A/B 65,536 bit/32,768 bit 2-WIRE SERIAL CMOS EEPROM FEATURES Two-Wire Serial Interface –Bi-directional data transfer protocol 400 KHz (I2C Protocol) Compatibility Low Power CMOS Technology –Standby Current less than 6 µA (5.0V) –Read Current less than 2 mA (5.0V) –Write Current less than 3 mA (5.0V) Flexible Voltage Operation –Vcc = 1.8V to 5.5V for –2 version –Vcc = 2.5V to 5.5V for –3 version Hardware Data Protection –IS24C32A/64A: WP protects entire array –IS24C32B/64B: WP protects top quarter of array Sequential Read Feature Filtered Inputs for Noise Suppression 8-pin PDIP, 8-pin SOIC and 8-pin TSSOP packages Self time write cycle with auto clear 5 ms @ 2.5V Organization: –IS24C32A/B: 4Kx8 (128 pages of 32 bytes) –IS24C64A/B: 8Kx8 (256 pages of 32 bytes) 32 Byte Page Write Buffer High Reliability –Endurance: 1,000,000 Cycles –Data Retention: 100 Years Commercial and Industrial temperature ranges ISSI ADVANCED INFORMATION MAY 2004 ® DESCRIPTION The IS24C32A/B and IS24C64A/B are electrically erasable PROM devices that use the standard 2wire interface for communications. The IS24C32A/B and IS24C64A/B contain a memory array of 32Kbits (4K x 8) and 64K-bits (8K x 8), respectively. Each device is organized into 32 byte pages for page write mode. This EEPROM is offered in wide operating voltages of 1.8V to 5.5V (IS24Cxx-2) and 2.5V to 5.5V (IS24Cxx-3) to be compatible with most application voltages. ISSI designed this device family ...