DESCRIPTION

The IS93C46A/56A/66A is a low-cost 1kb/2kb/4kb non-volatile, ISSI ? serial EEPROM. It is fabricated using an enhanced CMOS design and process. The IS93C46A/56A/66A contain power efficient read/write memory, and organziation of either 128/256/512 bytes of 8 bits or 64/128/256

words of 16 bits. When the ORG pin is connected to Vcc or left unconnected, x16 is selected; when it is connected to ground, x8 is selected. The IS93C46A/56A/66A is fully backwards compatible with IS93C46/56/66.

FEATURES

? Industry-standard Microwire Interface

— Non-volatile data storage

— Low voltage operation: Vcc = 2.5V to 5.5V

— Full TTL compatible inputs and outputs

— Auto increment for efficient data dump

? User Configured Memory Organization

— By 16-bit or by 8-bit

? Hardware and software write protection

— Defaults to write-disabled state at power-up

— Software instructions for write-enable/disable

? Enhanced low voltage CMOS E2PROM technology

? Versatile, easy-to-use Interface

— Self-timed programming cycle

— Automatic erase-before-write

— Programming status indicator

— Word and chip erasable

— Stop SK anytime for power savings

? Durable and reliable

— 40-year data retention after 1M write cycles

— 1 million write cycles

— Unlimited read cycles

— Schmitt-trigger inputs

? Industrial and Automotive Temperature Grade