EEPROM

EEPROM is short for Electrically Erasable Programmable Read-Only Memory. It is a non-volatile memory used in devices that are required to hold small amounts of data within a circuit in a compact package. Non-volatile data is able to be erased and reprogrammed.

The read-only memory or ROM can be erased and reprogrammed through the application of electrical voltages. EEPROM chips can be modified whilst still in a computer system and their non-volatile functionality means the memory can be retrieved even after the device or computer has been turned off and back on again.

Where is EEPROM memory used?

EEPROM devices are found in computers, microcontrollers and remote keyless systems to name a few. Flash Memory is another type of EEPROM which is commonly used in applications such as USB sticks.

EEPROM Interface Types:

  • Serial EEPROM ICs use interfaces such as SPI or I2C. They often feature lower current consumption and voltage. They are also often smaller as can utilise packages with 8 pins or less.
  • Parallel EEPROM ICs offer better memory density and AC performance. It is often quicker than EEPROM but usually has a higher number of pins.

Benefits to EEPROM Memory

There are many benefits to using EEPROM memory in a computer or electronic device. The ability to erase the entire contents of an EEPROM chip as well as being able to erase single bytes per section is invaluable. As well, a variety of interfaces are available for EEPROM with both serial and parallel buses. Programming capabilities of EEPROM are easy and efficient while being programmable without removing from a device board or testing set up.


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Description Price Memory Size Interface Type Package Type Mounting Type Pin Count Organisation Minimum Operating Supply Voltage Maximum Operating Supply Voltage Programming Voltage Number of Bits per Word Dimensions Automotive Standard Data Retention Maximum Operating Temperature
RS Stock No. 145-2853
Mfr. Part No.CAT93C66XI
HK$2.789
Each (In a Tube of 94)
units
4kbit Serial-Microwire SOIC Surface Mount 8 512 x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 781-5008
Mfr. Part No.CAT93C66XI
HK$2.49
Each (In a Pack of 2)
units
4kbit Serial-Microwire SOIC Surface Mount 8 512 x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - - +85 °C
RS Stock No. 163-0896
Mfr. Part No.CAT25640YI-GT3
HK$2.153
Each (On a Reel of 3000)
units
64kbit Serial-SPI TSSOP Surface Mount 8 8K x 8 bit 1.8 V 5.5 V - 8bit 4.5 x 3.1 x 1.05mm - 100yr +85 °C
RS Stock No. 103-5097
Mfr. Part No.CAT24M01XI-T2
HK$14.19
Each (On a Reel of 2000)
units
1Mbit Serial-I2C SOIC Surface Mount 8 128 x 8 bit 1.8 V 5.5 V - 8bit 5.33 x 5.38 x 1.78mm - 100yr +85 °C
RS Stock No. 185-9216
Mfr. Part No.NV25320DWHFT3G
HK$7.931
Each (In a Pack of 7)
units
32kbit SPI SOIC Surface Mount 8 4k x 8 bit 2.5 V 5.5 V - 8bit 5 x 4 x 1.5mm AEC-Q100 200yr +150 °C
RS Stock No. 186-9615
Mfr. Part No.CAT24AA01TDI-GT3
HK$2.778
Each (In a Pack of 25)
units
1kbit - SOT-23 Surface Mount 5 128 x 8 bit 1.7 V 5.5 V - 8bit 2.9 x 1.6 x 0.9mm AEC-Q100 100yr +85 °C
RS Stock No. 781-4796
Mfr. Part No.CAT24C208WI-GT3
HK$10.425
Each (On a Tape of 2)
units
8kbit Serial-I2C SOIC Surface Mount 8 1K x 8 bit 2.5 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 781-4724
Mfr. Part No.CAT24C04HU4I-GT3
HK$2.472
Each (In a Pack of 10)
units
4kbit Serial-I2C UDFN Surface Mount 8 512 x 8 bit 1.7 V 5.5 V - 8bit 3.05 x 2.05 x 0.5mm - 100yr +85 °C
RS Stock No. 186-9820
Mfr. Part No.CAT25256YI-G
HK$8.353
Each (In a Pack of 10)
units
256kbit - TSSOP Surface Mount 8 32k x 8 bit 1.8 V 5.5 V - 8bit 3.1 x 4.5 x 1.05mm AEC-Q100 100yr +85 °C
RS Stock No. 186-9748
Mfr. Part No.CAT24C256HU4IGT3
HK$3.708
Each (In a Pack of 25)
units
256kbit - UDFN Surface Mount 8 32k x 8 bit 1.8 V 5.5 V - 8bit 2 x 3 x 0.5mm AEC-Q100 100yr +85 °C
RS Stock No. 163-0868
Mfr. Part No.CAT24AA16TDI-GT3
HK$1.988
Each (On a Reel of 3000)
units
16kbit Serial-I2C TSOT-23 Surface Mount 5 2K x 8 bit 1.7 V 5.5 V - 8bit 2.9 x 1.6 x 0.9mm - 100yr +85 °C
RS Stock No. 781-4837
Mfr. Part No.CAT24C64YI-GT3JN
HK$2.053
Each (In a Pack of 10)
units
64kbit Serial-I2C TSSOP Surface Mount 8 8K x 8 bit 1.7 V 5.5 V - 8bit 4.5 x 3.1 x 1.05mm - 100yr +85 °C
RS Stock No. 186-9028
Mfr. Part No.CAT25256YI-G
HK$7.406
Each (In a Tube of 100)
units
256kbit - TSSOP Surface Mount 8 32k x 8 bit 1.8 V 5.5 V - 8bit 3.1 x 4.5 x 1.05mm AEC-Q100 100yr +85 °C
RS Stock No. 163-2371
Mfr. Part No.CAT24C128WI-GT3
HK$1.597
Each (On a Reel of 3000)
units
128kbit Serial-I2C SOIC Surface Mount 8 16K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 781-5039
Mfr. Part No.CAV25640VE-GT3
HK$6.962
Each (In a Pack of 5)
units
64kbit Serial-SPI SOIC Surface Mount 8 8K x 8 bit 2.5 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +125 °C
RS Stock No. 163-0883
Mfr. Part No.CAT24C32YI-GT3
HK$1.195
Each (On a Reel of 3000)
units
32kbit Serial-I2C TSSOP Surface Mount 8 4k x 8 bit 1.7 V 5.5 V - 8bit 4.5 x 3.1 x 1.05mm - 100yr +85 °C
RS Stock No. 755-9883
Mfr. Part No.CAV24C16WE-GT3
HK$3.958
Each (In a Pack of 5)
units
16kB Serial-I2C SOIC Surface Mount 8 2K x 8 bit 2.5 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +125 °C
RS Stock No. 186-9796
Mfr. Part No.CAT25160VI-GT3
HK$1.70
Each (In a Pack of 25)
units
16kbit - SOIC Surface Mount 8 2k x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm AEC-Q100 100yr +85 °C
RS Stock No. 186-9024
Mfr. Part No.CAT24C08YI-GT3
HK$0.846
Each (On a Reel of 3000)
units
8kbit - TSSOP Surface Mount 8 1k x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 4.5 x 1.05mm AEC-Q100 100yr +85 °C
RS Stock No. 186-9671
Mfr. Part No.CAT24C04WI-GT3
HK$2.75
Each (In a Pack of 25)
units
4kbit - SOIC Surface Mount 8 512 x 8 bit 1.7 V 5.5 V - 8bit 5 x 4 x 1.5mm AEC-Q100 100yr +85 °C