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Serial EEPROM

Our serial EEPROMs are compatible with popular industry bus protocols: I²C™, Microwire™ and SPI™. Products are offered in high density, 1K to 256K, and wide voltage, 1.8V to 6V, ranges.

In addition, we have 4-wire bus interface products and secure access designed devices for applications requiring security lock for data protection.

Serial EEPROM products are used in many applications to store user reconfigurable data. Common applications are disk drives, modems, cellular phones, VCRs, CD players, hearing aids, PCMCIA cards, cordless phones, laser printers, computers and pagers.

Catalyst manufactures a number of Flash memory products on a 0.6-micron process, while EEPROM products are manufactured on a 0.8-micron process. Catalyst is developing 0.5-micron technology.

Automotive applications are an increasingly important market for non-volatile memories. All Catalyst Flash and EEPROM products meet the automotive specifications for both inside-the-cabin and under-the-hood applications. Catalyst is the only Intel-licensed second source whose Flash memories meet the automotive temperature specifications.

We are the only supplier with standard serial EEPROMs that are specified over the entire voltage range of 1.8V to 6.0V at the automotive temperature extremes.

Serial EEPROM
Part No.	Description	Links
Application Specific Standard Products
CAT34C02	2-Kb I²C EEPROM for DDR2 DIMM Serial Presence Detect
CAT24C21	1-kb Dual Mode Memory for VESA™, DDC™ compatible Plug & Play monitors
CAT24C208	8-Kb Dual Port Serial EEPROM
I²C Bus with Low Standby Current, Full Array Write Protection
CAT24C01	1-Kb I²C CMOS Serial EEPROM
CAT24C02	2-Kb I²C CMOS Serial EEPROM
CAT24C04	4-Kb I²C CMOS Serial EEPROM
CAT24C08	8-Kb I²C CMOS Serial EEPROM
CAT24C16	16-Kb I²C CMOS Serial EEPROM
CAT24C164	16-Kb I²C CMOS Serial EEPROM
CAT24C32	32-Kb I²C CMOS Serial EEPROM
CAT24C64	64-Kb I²C CMOS Serial EEPROM
CAT24C128	128-Kb I²C CMOS Serial EEPROM
CAT24C256	256-Kb I²C CMOS Serial EEPROM
CAT24WC01	Serial EEPROM, Full Array Write Protect, 1Kb Not recommended for new designs, replace with CAT24C01
CAT24WC02	Serial EEPROM, Full Array Write Protect, 2Kb Not recommended for new designs, replace withCAT24C02
CAT24WC04	Serial EEPROM, Full Array Write Protect, 4Kb Not recommended for new designs, replace withCAT24C04
CAT24WC08	Serial EEPROM, Full Array Write Protect, 8Kb Not recommended for new designs, replace with CAT24C08
CAT24WC16	Serial EEPROM, Full Array Write Protect, 16Kb Not recommended for new designs, replace with CAT24C16
CAT24WC32	Serial CMOS EEPROM, Full Array Write Protect, 32Kb Not recommended for new designs, replace with CAT24C32
CAT24WC64	Serial CMOS EEPROM, Full Array Write Protect, 64Kb, Cascadable Not recommended for new designs, replace with CAT24C64
CAT24WC128	Serial CMOS EEPROM, Full Array Write Protect, 128Kb Not recommended for new designs, replace withCAT24C128
CAT24AC128	Serial CMOS EEPROM, Full Array Write Protect, 128Kb Not recommended for new designs, replace with CAT24C128
CAT24WC256	Serial CMOS EEPROM, Full Array Write Protect, 256Kb Not recommended for new designs, replace with CAT24C256
I²C Bus with Low Standby Current, Partial Array Write Protection
CAT24C03	2-Kb I²C CMOS Serial EEPROM with Partial Array Write Protection
CAT24C05	4-Kb I²C CMOS Serial EEPROM with Partial Array Write Protection
CAT24WC03	Serial CMOS EEPROM, 2Kb, Top 1/2 of Array Protected Not recommended for new designs, replace with CAT24C03
CAT24WC05	Serial CMOS EEPROM, 4Kb, Top 1/2 of Array Protected Not recommended for new designs, replace withCAT24C05
CAT24WC66	64K-Bit I²C Serial EEPROM, Top 1/4 of Array Protected
Microwire Bus
CAT93C46	Microwire Serial EEPROM, Selectable x8 or x16 memory organization
CAT93C46R	1-Kb Microwire Serial EEPROM, Selectable x8 or x16 memory organization
CAT93C56	2K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization
CAT93C57 (E)	2K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization, Die Rev E
CAT93C66	4-Kb Microwire Serial EEPROM, Selectable x8 or x16 Organization
CAT93C76 (A)	8K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization, Die Rev A
CAT93C86 (C)	16K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization, Die Rev C
SPI Bus with Low Standby Current (Mitsubishi Compatible)
CAT64LC40	SPI Bus Serial EEPROM (Mitsubishi Compatible), 4Kb
SPI Bus with Low Standby Current (Motorola Compatible)
CAT25010	SPI Serial CMOS EEPROM (Motorola Compatible), 1K, 2-bit Block Protection
CAT25020	SPI Serial CMOS EEPROM (Motorola Compatible), 2K, 2-bit Block Protection
CAT25040	SPI Serial CMOS EEPROM (Motorola Compatible), 4K, 2-bit Block Protection
CAT25080	SPI Serial CMOS EEPROM (Motorola Compatible), 8K, 2-bit Block Protection, WPEN Bit
CAT25160	SPI Serial CMOS EEPROM (Motorola Compatible), 16K, 2-bit Block Protection, WPEN Bit
CAT25C08	SPI Bus Serial EEPROM (Motorola Compatible), 8K, 2-bit Block Protection, WPEN Bit Not recommended for new designs, replace withCAT25080
CAT25C16	SPI Bus Serial EEPROM (Motorola Compatible), 16K, 2-bit Block Protection, WPEN Bit Not recommended for new designs, replace with CAT25160
CAT25320	32-Kb SPI Serial CMOS EEPROM
CAT25640	SPI Bus with Low Standby Current (Motorola Compatible), 64-Kb
CAT25C32	SPI Bus Serial EEPROM (Motorola Compatible), 32K, 2-bit Block Protection, WPEN Bit Not recommended for new designs, replace with CAT25320
CAT25C64	SPI Bus Serial EEPROM (Motorola Compatible), 64Kb, 2-bit Block Protection, WPEN Bit Not recommended for new designs, replace with CAT25640
CAT25C128	SPI Bus Serial EEPROM (Motorola Compatible), 128Kb, 2-bit Block Protection, WPEN Bit
CAT25256	256-Kb SPI Serial CMOS EEPROM
CAT25C256	SPI Bus Serial EEPROM (Motorola Compatible), 256Kb, 2-bit Block Protection, WPEN Bit Not recommended for new designs, replace with CAT25256