DESCRIPTION

The IS24C128A/256A is an electrically erasable PROM device that uses the standard 2-wire interface for communications. The IS24C128A is 128K-bit (16Kx8) and the IS24C256A is 256K-bit (32Kx8). These EEPROM are offered in a wide operating voltage range of 1.8V to 5.5V to be compatible with most application voltages. ISSI designed the IS24C128A/256A to be an efficient 2-wire EEPROM solution. The devices are packaged in 8-pin PDIP, 8-pin (JEDEC) SOIC, and 8-pin (EIAJ) SOIC.

FEATURES

? Two-Wire Serial Interface, I2CTM compatible

–Bi-directional data transfer protocol

? Wide Voltage Operation

–Vcc = 1.8V to 5.5V

? 400 KHz (2.5V) and 1 MHz (5.0V) compatibility

? Low Power CMOS Technology

–Active Current less than 3 mA (2.5V)

–Standby Current less than 20 μA (2.5V)

? Hardware Data Protection

–Write Protect Pin

? Sequential Read Feature

? Filtered Inputs for Noise Suppression

? Self time write cycle with auto clear

–5 ms @ 2.5V

? Organization:

–16Kx8 (256 pages of 64 bytes)

–32Kx8 (512 pages of 64 bytes)

? 64 Byte Page Write Buffer

? High Reliability

–Endurance: 1,000,000 Cycles

–Data Retention: 40 Years

? Industrial and Automotive temperature ranges

? 8-pin PDIP, 8-pin (JEDEC) SOIC, and 8-pin (EIAJ) SOIC packages

? Lead-free available