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. Non-volatile data us 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 memory can be retrieved even after having 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. Flash Memory is another type of EEPROM which is commonly used in 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 have 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. 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. 810-3902
Mfr. Part No.24AA256UID-I/ST
BrandMicrochip
R 14.136
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. 178-4055
Mfr. Part No.24AA256UID-I/ST
BrandMicrochip
R 13.205
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. 803-2103
Mfr. Part No.24AA02E64T-I/OT
BrandMicrochip
R 3.451
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. 178-5311
Mfr. Part No.24AA02E64T-I/OT
BrandMicrochip
R 3.274
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. 889-5862
Mfr. Part No.24LC256-I/SM
BrandMicrochip
R 12.792
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. 823-4450
Mfr. Part No.24LC256T-I/SM
BrandMicrochip
R 16.71
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. 687-9073
Mfr. Part No.24LC256-I/SM
BrandMicrochip
R 21.76
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 10.78
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. 798-5217
Mfr. Part No.24AA025E48T-I/OT
BrandMicrochip
R 4.168
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. 454-167
Mfr. Part No.25LC256-I/SN
BrandMicrochip
R 19.96
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. 803-2086
Mfr. Part No.24AA025UIDT-I/OT
BrandMicrochip
R 3.795
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. 178-5309
Mfr. Part No.24AA025E48T-I/OT
BrandMicrochip
R 3.941
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. 889-5229
Mfr. Part No.25LC256-I/SN
BrandMicrochip
R 18.537
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. 454-066
Mfr. Part No.25LC1024-I/SM
BrandMicrochip
R 50.45
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. 825-1149
Mfr. Part No.25LC256-E/SN
BrandMicrochip
R 20.262
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. 178-5310
Mfr. Part No.24AA025UIDT-I/OT
BrandMicrochip
R 3.618
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. 887-7356
Mfr. Part No.25LC1024-I/SM
BrandMicrochip
R 49.12
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. 178-4133
Mfr. Part No.25LC256-E/SN
BrandMicrochip
R 19.268
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. 803-2128
Mfr. Part No.24AA02UIDT-I/OT
BrandMicrochip
R 3.279
Each (In a Pack 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. 178-5313
Mfr. Part No.24AA02UIDT-I/OT
BrandMicrochip
R 3.124
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