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Serial EEPROMOur 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 |
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| CAT24C21 |
1-kb Dual Mode Memory for VESA™, DDC™ compatible Plug & Play monitors |
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| CAT24C208 |
8-Kb Dual Port Serial EEPROM |
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| I²C Bus with Low Standby Current, Full Array Write Protection |
| CAT24AA01 |
1-Kb I²C CMOS Serial EEPROM  |
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| CAT24C01 |
1-Kb I²C CMOS Serial EEPROM |
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| CAT24AA02 |
2-Kb I²C CMOS Serial EEPROM |
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| CAT24C02 |
2-Kb I²C CMOS Serial EEPROM |
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| CAT24C04 |
4-Kb I²C CMOS Serial EEPROM |
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| CAT24C08 |
8-Kb I²C CMOS Serial EEPROM |
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| CAT24C16 |
16-Kb I²C CMOS Serial EEPROM |
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| CAT24C164 |
16-Kb I²C CMOS Serial EEPROM |
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| CAT24C32 |
32-Kb I²C CMOS Serial EEPROM |
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| CAT24C64 |
64-Kb I²C CMOS Serial EEPROM |
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| CAT24C128 |
128-Kb I²C CMOS Serial EEPROM |
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| CAT24C256 |
256-Kb I²C CMOS Serial EEPROM |
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| CAT24WC01 |
Serial EEPROM, Full Array Write Protect, 1Kb
Not recommended for new designs, replace with CAT24C01 |
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| CAT24WC02 |
Serial EEPROM, Full Array Write Protect, 2Kb
Not recommended for new designs, replace with CAT24C02 |
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| CAT24WC04 |
Serial EEPROM, Full Array Write Protect, 4Kb
Not recommended for new designs, replace with CAT24C04 |
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| CAT24WC08 |
Serial EEPROM, Full Array Write Protect, 8Kb
Not recommended for new designs, replace with CAT24C08 |
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| CAT24WC16 |
Serial EEPROM, Full Array Write Protect, 16Kb
Not recommended for new designs, replace with CAT24C16 |
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| CAT24WC32 |
Serial CMOS EEPROM, Full Array Write Protect, 32Kb
Not recommended for new designs, replace with CAT24C32 |
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| CAT24WC64 |
Serial CMOS EEPROM, Full Array Write Protect, 64Kb, Cascadable
Not recommended for new designs, replace with CAT24C64 |
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| CAT24WC128 |
Serial CMOS EEPROM, Full Array Write Protect, 128Kb
Not recommended for new designs, replace with CAT24C128 |
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| CAT24AC128 |
Serial CMOS EEPROM, Full Array Write Protect, 128Kb
Not recommended for new designs, replace with CAT24C128 |
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| CAT24WC256 |
Serial CMOS EEPROM, Full Array Write Protect, 256Kb
Not recommended for new designs, replace with CAT24C256 |
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| I²C
Bus with Low Standby Current, Partial Array Write Protection |
| CAT24C03 |
2-Kb I²C CMOS Serial EEPROM with Partial Array Write Protection |
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| CAT24C05 |
4-Kb I²C CMOS Serial EEPROM with Partial Array Write Protection |
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| CAT24WC03 |
Serial CMOS EEPROM, 2Kb, Top 1/2 of Array Protected
Not recommended for new designs, replace with CAT24C03 |
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| CAT24WC05 |
Serial CMOS EEPROM, 4Kb, Top 1/2 of Array Protected
Not recommended for new designs, replace with CAT24C05 |
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CAT24WC66 |
64K-Bit I²C Serial EEPROM, Top 1/4 of Array Protected |
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| Microwire Bus |
| CAT93C46 |
1K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization |
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| CAT93C46R |
1-Kb Microwire Serial EEPROM, Selectable x8 or x16 memory organization |
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| CAT93C56 |
2K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization |
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| CAT93C57 (E) |
2K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization, Die Rev E |
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| CAT93C66 |
4-Kb Microwire Serial EEPROM, Selectable x8 or x16 Organization |
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| CAT93C76 (A) |
8K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization, Die Rev A |
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| CAT93C86 (C) |
16K-Bit Microwire Serial EEPROM, Selectable x8 or x16 memory organization, Die Rev C |
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| SPI Bus with Low Standby Current (Mitsubishi Compatible) |
| CAT64LC40 |
SPI Bus Serial EEPROM (Mitsubishi Compatible), 4Kb |
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| SPI Bus with Low Standby Current (Motorola Compatible) |
| CAT25010 |
SPI Serial CMOS EEPROM (Motorola Compatible), 1K, 2-bit Block
Protection |
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| CAT25020 |
SPI Serial CMOS EEPROM (Motorola Compatible), 2K, 2-bit Block
Protection |
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| CAT25040 |
SPI Serial CMOS EEPROM (Motorola Compatible), 4K, 2-bit Block
Protection |
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| CAT25080 |
SPI Serial CMOS EEPROM (Motorola Compatible), 8K, 2-bit Block Protection, WPEN Bit |
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| CAT25160 |
SPI Serial CMOS EEPROM (Motorola Compatible), 16K, 2-bit Block Protection, WPEN Bit |
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| CAT25C08 |
SPI Bus Serial EEPROM (Motorola Compatible), 8K, 2-bit Block Protection, WPEN Bit
Not recommended for new designs, replace with CAT25080 |
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| CAT25C16 |
SPI Bus Serial EEPROM (Motorola Compatible), 16K, 2-bit Block Protection, WPEN Bit
Not recommended for new designs, replace with CAT25160 |
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| CAT25320 |
32-Kb SPI Serial CMOS EEPROM |
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| CAT25640 |
SPI Bus with Low Standby Current (Motorola Compatible), 64-Kb |
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| CAT25C32 |
SPI Bus Serial EEPROM (Motorola Compatible), 32K, 2-bit Block Protection, WPEN Bit
Not recommended for new designs, replace with CAT25320 |
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| CAT25C64 |
SPI Bus Serial EEPROM (Motorola Compatible), 64Kb, 2-bit Block Protection, WPEN Bit
Not recommended for new designs, replace with CAT25640
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| CAT25128 |
128-Kb SPI Serial CMOS EEPROM |
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| CAT25C128 |
SPI Bus Serial EEPROM (Motorola Compatible), 128Kb, 2-bit Block Protection, WPEN Bit
Not recommended for new designs, replace with CAT25128 |
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| CAT25256 |
256-Kb SPI Serial CMOS EEPROM |
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| CAT25C256 |
SPI Bus Serial EEPROM (Motorola Compatible), 256Kb, 2-bit Block Protection, WPEN Bit
Not recommended for new designs, replace with CAT25256 |
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Parallel EEPROM
Catalyst offers both standard 5 volt-only and 3.3 volt-only parallel EEPROMs to meet battery operated application requirements. Products with 16Kbit to 512Kbit densities are available.
Parallel EEPROMs are used in applications such as POS terminals, industrial controllers, LAN adapters, telecommunication switches, cellular phones and modems.
| Parallel EEPROM |
| Part No. |
Description |
Links |
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| CAT28LV64 |
Parallel EEPROM, Low Voltage, 64Kb |
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| CAT28LV65 |
Parallel EEPROM, Low Voltage, 64Kb |
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| CAT28LV256 |
Parallel EEPROM, Low Voltage, 256Kb |
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| CAT28C16A |
Parallel EEPROM, 16Kb |
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| CAT28C17A |
Parallel EEPROM, 16Kb, RDY/BSY Pin |
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| CAT28C64B |
Parallel EEPROM, 64Kb |
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| CAT28C65B |
Parallel EEPROM, 64Kb, RDY/BSY Pin |
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| CAT28C256 |
Parallel EEPROM, 256Kb (TSOP Package) |
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| CAT28C257 |
Parallel EEPROM, 256Kb |
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| CAT28C512 |
Parallel EEPROM, 512Kb (TSOP Package) |
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| CAT28C513 |
Parallel EEPROM, 512Kb |
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Flash Memory
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NVRAM
NVRAMs consist of an SRAM and an EEPROM incorporated onto a single semiconductor die. NVRAMs provide superior performance over other NVM products and serve applications that require high-speed read/write operations with non-volatile memories, including parallel processing controllers for LANs and antilock braking systems. Back to Top
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