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. 178-4055
Mfr. Part No.24AA256UID-I/ST
BrandMicrochip
R 13.487
Each (In a Tube of 100)
units
256kbit Serial-I2C TSSOP Surface Mount 8 32K x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 4.5 x 1.05mm - 200yr +85 °C
RS stock no. 810-3902
Mfr. Part No.24AA256UID-I/ST
BrandMicrochip
R 15.441
Each (In a Pack of 10)
units
256kbit Serial-I2C TSSOP Surface Mount 8 32K x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 4.5 x 1.05mm - 200yr +85 °C
RS stock no. 168-7601
Mfr. Part No.M24C32-RMN6P
R 2.324
Each (In a Tube of 100)
units
32kbit Serial-I2C SOIC Surface Mount 8 4096 x 8 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 200yr +85 °C
RS stock no. 178-5311
Mfr. Part No.24AA02E64T-I/OT
BrandMicrochip
R 3.356
Each (On a Reel of 3000)
units
2kbit Serial-2 Wire SOT-23 Surface Mount 5 128 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS stock no. 803-2103
Mfr. Part No.24AA02E64T-I/OT
BrandMicrochip
R 3.962
Each (On a Tape of 50)
units
2kbit Serial-2 Wire SOT-23 Surface Mount 5 128 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS stock no. 889-5862
Mfr. Part No.24LC256-I/SM
BrandMicrochip
R 13.664
Each (In a Tube of 90)
units
256kbit Serial-I2C SOIJ Surface Mount 8 32K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 5.33 x 5.38 x 1.98mm - 200yr +85 °C
RS stock no. 687-9073
Mfr. Part No.24LC256-I/SM
BrandMicrochip
R 16.10
Each
units
256kbit Serial-I2C SOIJ Surface Mount 8 32K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 5.33 x 5.38 x 1.98mm - 200yr +85 °C
RS stock no. 170-4338
Mfr. Part No.24LC256T-I/SM
BrandMicrochip
R 14.248
Each (On a Reel of 2100)
units
32kbit Serial-I2C SOIC Surface Mount 8 4k x 8 bit 2.5 V 5.5 V 2.5 → 5.5V 8bit 4.9 x 3.9 x 1.5mm - >200yr +85 °C
RS stock no. 823-4450
Mfr. Part No.24LC256T-I/SM
BrandMicrochip
R 18.24
Each (In a Pack of 10)
units
256kB Serial-I2C SOIJ Surface Mount 8 32768 x 8 bit 2.5 V 5.5 V - 8bit 5.26 x 5.24 x 1.98mm - >200yr +85 °C
RS stock no. 798-5217
Mfr. Part No.24AA025E48T-I/OT
BrandMicrochip
R 4.747
Each (In a Pack of 25)
units
2kbit Serial-2 Wire SOT-23 Surface Mount 6 256 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS stock no. 887-7356
Mfr. Part No.25LC1024-I/SM
BrandMicrochip
R 50.562
Each (In a Tube of 90)
units
1Mbit Serial-SPI SOIJ Surface Mount 8 128 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 5.33 x 5.38 x 1.98mm - 200yr +85 °C
RS stock no. 178-5310
Mfr. Part No.24AA025UIDT-I/OT
BrandMicrochip
R 3.838
Each (On a Reel of 3000)
units
2kbit Serial-2 Wire SOT-23 Surface Mount 6 128 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS stock no. 454-066
Mfr. Part No.25LC1024-I/SM
BrandMicrochip
R 55.84
Each
units
1Mbit Serial-SPI SOIJ Surface Mount 8 128 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 5.33 x 5.38 x 1.98mm - 200yr +85 °C
RS stock no. 889-5229
Mfr. Part No.25LC256-I/SN
BrandMicrochip
R 19.308
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. 803-2086
Mfr. Part No.24AA025UIDT-I/OT
BrandMicrochip
R 4.45
Each (On a Tape of 50)
units
2kbit Serial-2 Wire SOT-23 Surface Mount 6 128 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS stock no. 454-167
Mfr. Part No.25LC256-I/SN
BrandMicrochip
R 21.315
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. 178-4133
Mfr. Part No.25LC256-E/SN
BrandMicrochip
R 19.875
Each (In a Tube of 100)
units
256kbit Serial-SPI SOIC Surface Mount 8 32768 x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS stock no. 825-1149
Mfr. Part No.25LC256-E/SN
BrandMicrochip
R 22.086
Each (In a Pack of 5)
units
256kbit Serial-SPI SOIC Surface Mount 8 32768 x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS stock no. 178-5309
Mfr. Part No.24AA025E48T-I/OT
BrandMicrochip
R 4.152
Each (On a Reel of 3000)
units
2kbit I2C SOT-23 Surface Mount 6 256 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS stock no. 781-4708
Mfr. Part No.CAT24C02TDI-GT3A
Brandonsemi
R 2.356
Each (In a Pack of 20)
units
2kbit Serial-I2C TSOT-23 Surface Mount 5 256 x 8 bit 1.7 V 5.5 V - 8bit 2.9 x 1.6 x 0.9mm - 100yr +85 °C