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. 823-4557
Mfr. Part No.24LC256T-I/SN
BrandMicrochip
£0.629
Each (In a Pack of 10)
Units
256kB Serial-I2C SOIC Surface Mount 8 32768 x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +85 °C
RS Stock No. 889-5102
Mfr. Part No.24LC256-I/SN
BrandMicrochip
£0.605
Each (In a Tube of 100)
Units
256kbit Serial-I2C 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. 454-331
Mfr. Part No.24LC256-I/SN
BrandMicrochip
£0.64
Each (In a Pack of 5)
Units
256kbit Serial-I2C 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. 912-6915
Mfr. Part No.24LC256T-I/SN
BrandMicrochip
£0.762
Each (On a Reel of 3300)
Units
256kbit Serial-2 Wire, Serial-I2C SOIC Surface Mount 8 32K x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +85 °C
RS Stock No. 165-5307
Mfr. Part No.M24M02-DRMN6TP
£1.172
Each (On a Reel of 2500)
Units
2Mbit Serial-I2C SOIC Surface Mount 8 256K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.25mm - 200yr +85 °C
RS Stock No. 880-5333
Mfr. Part No.M24M02-DRMN6TP
£1.68
Each (In a Pack of 5)
Units
2Mbit Serial-I2C SOIC Surface Mount 8 256K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.25mm - 200yr +85 °C
RS Stock No. 178-4921
Mfr. Part No.24LC512-I/P
BrandMicrochip
£0.981
Each (In a Tube of 50)
Units
512kbit Serial-I2C PDIP Through Hole 8 64K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 454-191
Mfr. Part No.24LC512-I/P
BrandMicrochip
£1.19
Each (In a Pack of 2)
Units
512kbit Serial-I2C PDIP Through Hole 8 64K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 887-7331
Mfr. Part No.24LC1025-I/SN
BrandMicrochip
£2.12
Each (In a Tube of 100)
Units
1Mbit Serial-2 Wire SOIC Surface Mount 8 128 x 8 bit 2.5 V 5.5 V - - 4.9 x 3.9 x 1.25mm - 200yr +85 °C
RS Stock No. 687-9405
Mfr. Part No.24LC1025-I/SN
BrandMicrochip
£2.36
Each
Units
1Mbit Serial-2 Wire SOIC Surface Mount 8 128 x 8 bit 2.5 V 5.5 V - - 4.9 x 3.9 x 1.25mm - 200yr +85 °C
RS Stock No. 454-371
Mfr. Part No.24LC256-I/P
BrandMicrochip
£0.704
Each (In a Pack of 5)
Units
256kbit Serial-I2C PDIP Through Hole 8 32K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 880-5351
Mfr. Part No.M95M02-DRMN6TP
£1.294
Each (In a Pack of 5)
Units
2Mbit Serial-SPI SOIC Surface Mount 8 262144 x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.25mm - 200yr +85 °C
RS Stock No. 687-8644
Mfr. Part No.24LC64T-I/OT
BrandMicrochip
£0.30
Each
Units
64kbit Serial-I2C SOT-23 Surface Mount 5 8K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS Stock No. 178-5289
Mfr. Part No.24LC64T-I/OT
BrandMicrochip
£0.252
Each (On a Reel of 3000)
Units
64kbit Serial-I2C SOT-23 Surface Mount 5 8K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS Stock No. 165-5310
Mfr. Part No.M95M02-DRMN6TP
£1.157
Each (On a Reel of 2500)
Units
2Mbit Serial-SPI SOIC Surface Mount 8 262144 x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.25mm - 200yr +85 °C
RS Stock No. 667-8347
Mfr. Part No.25AA02E48T-I/OT
BrandMicrochip
£0.302
Each (In a Pack of 10)
Units
2kbit Serial-SPI SOT-23 Surface Mount 6 256 x 8 bit 1.8 V 5.5 V - - 2.95 x 1.63 x 1.1mm - 200yr +85 °C
RS Stock No. 889-5708
Mfr. Part No.25AA02E48T-I/OT
BrandMicrochip
£0.268
Each (On a Reel of 3000)
Units
2kbit Serial-SPI SOT-23 Surface Mount 6 256 x 8 bit 1.8 V 5.5 V - - 2.95 x 1.63 x 1.1mm - 200yr +85 °C
RS Stock No. 887-7356
Mfr. Part No.25LC1024-I/SM
BrandMicrochip
£2.28
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. 454-066
Mfr. Part No.25LC1024-I/SM
BrandMicrochip
£2.45
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. 165-8222
Mfr. Part No.M24512-DFMC6TG
£0.347
Each (On a Reel of 5000)
Units
512kbit Serial-I2C UFDFPN Surface Mount 8 64K x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 2.1 x 0.55mm - 200yr +85 °C