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. 168-8719
Mfr. Part No.M95640-DFDW6TP
SGD0.364
Each (On a Reel of 4000)
units
64kbit SPI TSSOP Surface Mount 8 8192B x 8 bit 1.7 V 5.5 V - 8bit 4.5 x 3.1 x 1.05mm - 200yr +85 °C
RS Stock No. 178-5001
Mfr. Part No.25LC040A-I/SN
BrandMicrochip
SGD0.625
Each (In a Tube of 80)
units
4kbit Serial-SPI SOIC Surface Mount 8 512 x 8 bit 2.5 V 5.5 V - - 4.9 x 3.9 x 1.25mm - 200yr +85 °C
RS Stock No. 178-4918
Mfr. Part No.24LC01B-I/P
BrandMicrochip
SGD0.377
Each (In a Tube of 50)
units
1kbit Serial-I2C PDIP Through Hole 8 128 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V 8bit 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 823-0729
Mfr. Part No.24LC04BT-E/OT
BrandMicrochip
SGD0.474
Each (In a Pack of 20)
units
4kbit Serial-I2C SOT-23 Surface Mount 5 256 x 8 2.5 V 5.5 V 2.5 → 5.5V 8bit 3.1 x 1.8 x 1.3mm - >200yr +125 °C
RS Stock No. 877-2778
Mfr. Part No.M24C02-RMC6TG
SGD0.224
Each (In a Pack of 20)
units
2kbit Serial-I2C MLP Surface Mount 8 16 Page x 2K 1.8 V 5.5 V 1.8 → 5.5V 2K 3 x 2 x 0.6mm - >200yr +85 °C
RS Stock No. 168-6715
Mfr. Part No.M95M01-RMN6P
SGD1.675
Each (In a Tube of 100)
units
1Mbit SPI SOIC Surface Mount 8 128 x 8 bit 1.8 V 5.5 V 1.8 → 5.5V - 5 x 4 x 1.25mm - 40yr +85 °C
RS Stock No. 131-2741
Mfr. Part No.BR24T256FJ-WE2
BrandROHM
SGD1.326
Each (In a Pack of 10)
units
256kbit Serial-I2C SOP-J Surface Mount 8 32K x 8 bit 1.6 V 5.5 V - 8bit 4.9 x 3.9 x 1.37mm - Minimum of 40yr +85 °C
RS Stock No. 394-324
Mfr. Part No.M93C66-WMN6P
SGD0.28
Each (In a Pack of 5)
units
4kbit Serial-Microwire SOIC Surface Mount 8 256 x 16 bit, 512 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
RS Stock No. 686-2249
Mfr. Part No.M24512-RMN6TP
SGD0.86
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. 686-2378
Mfr. Part No.M93C66-WMN6TP
SGD0.245
Each (In a Pack of 25)
units
4kbit Serial-Microwire SOIC Surface Mount 8 256 x 16 bit, 512 x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
RS Stock No. 178-4069
Mfr. Part No.24LC32A-E/SN
BrandMicrochip
SGD0.611
Each (In a Tube of 100)
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 +125 °C
RS Stock No. 454-191
Mfr. Part No.24LC512-I/P
BrandMicrochip
SGD2.405
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. 178-4027
Mfr. Part No.24AA256-I/MS
BrandMicrochip
SGD1.214
Each (In a Tube of 100)
units
256kbit Serial-I2C MSOP Surface Mount 8 32K x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 3 x 3 x 0.85mm - 200yr +85 °C
RS Stock No. 686-2429
Mfr. Part No.M24C02-WMN6TP
SGD0.156
Each (In a Pack of 25)
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
RS Stock No. 168-5793
Mfr. Part No.M24512-RMN6P
SGD0.731
Each (In a Tube of 100)
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. 808-0199
Mfr. Part No.CAT24C256WI-GT3
SGD0.466
Each (In a Pack of 50)
units
256kbit Serial-I2C SOIC Surface Mount 8 32K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 920-6263
Mfr. Part No.M95128-WMN6P
SGD0.546
Each (In a Tube of 100)
units
128kbit Serial-SPI SOIC Surface Mount 8 16K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 4.9 x 3.9 x 1.25mm - 40yr +85 °C
RS Stock No. 667-8141
Mfr. Part No.24AA02E48-I/SN
BrandMicrochip
SGD0.389
Each (In a Pack of 10)
units
2kbit Serial-I2C SOIC Surface Mount 8 256 x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 4.9 x 3.9 x 1.25mm - 200yr +85 °C
RS Stock No. 878-7354
Mfr. Part No.M95M02-DWMN3TP/K
SGD4.46
Each (In a Pack of 5)
units
2Mbit SPI SOIC Surface Mount 8 256K x 8 bit 2.5 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +125 °C
RS Stock No. 454-088
Mfr. Part No.24LC64-I/P
BrandMicrochip
SGD0.746
Each (In a Pack of 10)
units
64kbit Serial-I2C PDIP Through Hole 8 8K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C