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