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. 178-4065
Mfr. Part No.24LC256-E/MS
BrandMicrochip
PHP51.439
Each (In a Tube of 100)
units
256kbit Serial-I2C MSOP Surface Mount 8 32K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V 8bit 3 x 3 x 0.95mm - >200yr +125 °C
RS Stock No. 803-2096
Mfr. Part No.24AA02UID-I/P
BrandMicrochip
PHP14.464
Each (In a Pack of 50)
units
2kbit Serial-2 Wire PDIP Through Hole 8 128 x 8 bit 1.7 V 5.5 V - 8bit - - 200yr +85 °C
RS Stock No. 686-2249
Mfr. Part No.M24512-RMN6TP
PHP28.812
Each (In a Pack of 5)
units
512kbit Serial-I2C SOIC Surface Mount 8 64K x 8 bit 1.8 V 5.5 V - - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
RS Stock No. 823-1233
Mfr. Part No.24LC1026-E/SN
BrandMicrochip
PHP176.275
Each (In a Pack of 2)
units
1024kbit Serial-I2C SOIC Surface Mount 8 128 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V 8bit 4.9 x 3.9 x 1.5mm - >200yr +125 °C
RS Stock No. 178-4950
Mfr. Part No.24AA02UID-I/P
BrandMicrochip
PHP15.435
Each (In a Tube of 60)
units
2kbit Serial-2 Wire PDIP Through Hole 8 128 x 8 bit 1.7 V 5.5 V - 8bit - - 200yr +85 °C
RS Stock No. 163-0882
Mfr. Part No.CAT24C32WI-GT3
PHP7.203
Each (On a Reel of 3000)
units
32kbit Serial-I2C SOIC Surface Mount 8 4k x 8 bit 1.7 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 781-4831
Mfr. Part No.CAT24M01HU5I-GT3
PHP97.461
Each (In a Pack of 10)
units
1Mbit Serial-I2C UDFN Surface Mount 8 128 x 8 bit 1.8 V 5.5 V - 8bit 3 x 2 x 0.5mm - 100yr +85 °C
RS Stock No. 686-2374
Mfr. Part No.M24C02-WDW6TP
PHP5.732
Each (In a Pack of 25)
units
2kbit Serial-I2C TSSOP Surface Mount 8 256 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 3 x 4.4 x 1mm - 40yr +85 °C
RS Stock No. 823-0975
Mfr. Part No.24FC64-I/P
BrandMicrochip
PHP24.696
Each (In a Pack of 20)
units
64kbit Serial-I2C PDIP Through Hole 8 8K x 8 bit 1.7 V 5.5 V 1.7 → 5.5V 8bit 0.4 x 0.28 x 0.195in - >200yr +85 °C
RS Stock No. 165-7477
Mfr. Part No.M24512-RMN6TP
PHP19.394
Each (On a Reel of 2500)
units
512kbit Serial-I2C SOIC Surface Mount 8 64K x 8 bit 1.8 V 5.5 V - - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
RS Stock No. 178-4049
Mfr. Part No.24AA02UID-I/SN
BrandMicrochip
PHP12.138
Each (In a Tube of 100)
units
2kbit Serial-2 Wire SOIC Surface Mount 8 128 x 8 bit 1.7 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +85 °C
RS Stock No. 454-167
Mfr. Part No.25LC256-I/SN
BrandMicrochip
PHP70.90
Each (In a Pack of 2)
units
256kbit Serial-SPI SOIC Surface Mount 8 32K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 4.9 x 3.9 x 1.25mm - 200yr +85 °C
RS Stock No. 145-9422
Mfr. Part No.M24C02-WMN6TP
PHP3.906
Each (On a Reel of 2500)
units
2kbit Serial-I2C SOIC Surface Mount 8 256 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
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Mfr. Part No.93LC66B-E/P
BrandMicrochip
PHP21.609
Each (In a Pack of 20)
units
4kB Serial-Microwire PDIP Through Hole 8 256 x 16 bit 2.5 V 5.5 V - 16bit 0.4 x 0.28 x 0.195in - 200yr +125 °C
RS Stock No. 714-0843
Mfr. Part No.M24C02-WMN6P
PHP6.373
Each (In a Pack of 20)
units
2kbit Serial-I2C SOIC Surface Mount 8 256 x 8 bit 2.5 V 5.5 V 3.3 V, 5 V 8bit 4.9 x 3.9 x 1.25mm - 40yr +85 °C
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Mfr. Part No.25LC256-I/SN
BrandMicrochip
PHP68.778
Each (In a Tube of 100)
units
256kbit Serial-SPI SOIC Surface Mount 8 32K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 4.9 x 3.9 x 1.25mm - 200yr +85 °C
RS Stock No. 387-326
Mfr. Part No.M24512-RMN6P
PHP30.87
Each (In a Pack of 2)
units
512kbit Serial-I2C SOIC Surface Mount 8 64K x 8 bit 1.8 V 5.5 V - - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
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Mfr. Part No.M24C02-WDW6TP
PHP3.665
Each (On a Reel of 4000)
units
2kbit Serial-I2C TSSOP Surface Mount 8 256 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 3 x 4.4 x 1mm - 40yr +85 °C
RS Stock No. 121-6321
Mfr. Part No.CAT24M01HU5I-GT3
PHP74.603
Each (On a Reel of 3000)
units
1Mbit Serial-I2C UDFN Surface Mount 8 128 x 8 bit 1.8 V 5.5 V - 8bit 3 x 2 x 0.5mm - 100yr +85 °C
RS Stock No. 168-6811
Mfr. Part No.M24C02-WMN6P
PHP5.67
Each (In a Tube of 100)
units
2kbit Serial-I2C SOIC Surface Mount 8 256 x 8 bit 2.5 V 5.5 V 3.3 V, 5 V 8bit 4.9 x 3.9 x 1.25mm - 40yr +85 °C