DESCRIPTION

The IS24C256 is an electrically erasable PROM device that uses the standard 2-wire interface for communications. The IS24C256 contains a memory array of 256K-bits (32,768 x 8), and is further subdivided into 512 pages of 64 bytes each for PageWrite mode. This EEPROM is offered in wide operating voltages of 1.8V to 5.5V (IS24C256-2) and 2.5V to 5.5V (IS24C256-3) to be compatible with most application voltages. ISSI designed the IS24C256 to be a low-cost and low-power 2-wire EEPROM solution. The devices are packaged in 8-pin PDIP, 8-pin SOIC, and 14-pin TSSOP.

FEATURES

? Organization:

– 32K-bit x 8-bit

? 64-Byte Page Write Buffer

? Two-Wire Serial Interface

– Bi-directional data transfer protocol

? Low Power CMOS Technology

– Active Current less than 3 mA (5V)

– Standby Current less than 6 μA (5V)

– Standby Current less than 2 μA (2.5V)

? Wide Voltage Operation

– IS24C256-2: Vcc = 1.8V to 5.5V

– IS24C256-3: Vcc = 2.5V to 5.5V

? 1 MHz (I2CTM Protocol) Compatibility

? Hardware Data Protection

– Write Protect pin

? Sequential Read Feature

? Filtered Inputs for Noise Suppression

? Self time Write cycle with auto clear

– 5 ms @ 5.0V

? High Reliability

– Endurance: 100,000 Cycles

– Data Retention: 40 Years

? Commercial and Industrial temperature ranges

? 8-pin PDIP, 8-pin SOIC, and 14-pin TSSOP