DESCRIPTION
The IS93C56A/66A are 2kb/4kb non-volatile, ISSI ® serial EEPROMs. They are fabricated using an enhanced CMOS design and process. The IS93C56A/66A contain power-efficient read/write memory, and organization of either 256/512 bytes of 8 bits or 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 IS93C56A/66A are fully backward compatible with IS93C56/66.

FEATURES
• Industry-standard Microwire Interface
    — Non-volatile data storage
    — Wide voltage operation: Vcc = 1.8V to 5.5V
    — 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
    — Chip select enables 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
• Lead-free available