(IS93C56A / IS93C66A) 2K-BIT/4K-BIT SERIAL ELECTRICALLY ERASABLE PROM
Description
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IS93C56A
IS93C66A
ISSI
MAY 2006
®
2K-BIT/4K-BIT SERIAL ELECTRICALLY ERASABLE PROM
FEATURES DESCRIPTION
• Industry-standard Microwire Interface The IS93C56A/66A are 2kb/4kb non-volatile, — Non-volatile data storage ISSI ® serial EEPROMs.
They are fabricated using — Wide voltage operation: an enhanced CMOS design and process.
The Vcc = 1.
8V to 5.
5V IS93C56A/66A contain power-efficient read/write — Auto increment for efficient data dump memory, and organization of either 256/512 bytes • User Configured Memory Organization of 8 bits or 128/256 words of 16 bits.
When the — By 16-bit or by 8-bit ORG pin is connected to Vcc or left unconnected, • Hardware and software write protection x16 is selected; when it is connected to ground, — Defaults to write-disabled state at power-up x8 is selected.
The IS93C56A/66A are fully — Software instructions for write-enable/disable backward compatible with IS93C56/66.
2 • Enhanced low voltage CMOS E PROM An instruction set defines the operation of the technology devices, including read, write, and mode-enable • Versatile, easy-to-use Interface functions.
To protect against inadvertent data — Self-timed programming cycle modification, all erase and write instructions are — Automatic erase-before-write accepted only while the devices are write-enabled.
— Programming status indicator A selected x8 byte or x16 word can be modified — Word and chip erasable with a single WRITE or ERASE instruction.
Shee — Chip select enables power savings Additionally, the two instructions WRITE ALL or Data • Durable and reliable ERASE ALL can program an entire array.
Once a DataSheet4U.
com — 40-year data retention after 1M write cycles device begins its self-timed program procedure, — 1 million write cycles the data out pin (Dout) can indicate the READY/ — Unlimited read cycles BUSY status by raising chip select (CS).
The self— Schmitt-trigger inputs timed write cycle includes an automatic erase• Industrial and Automotive Temperatu...
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