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. 178-4948
Mfr. Part No.24AA256-I/P
BrandMicrochip
SGD1.355
Each (In a Tube of 60)
units
256kbit Serial-I2C PDIP Through Hole 8 32K x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 687-9164
Mfr. Part No.24AA256-I/P
BrandMicrochip
SGD1.40
Each
units
256kbit Serial-I2C PDIP Through Hole 8 32K x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 454-337
Mfr. Part No.93LC56B-I/P
BrandMicrochip
SGD0.452
Each (In a Pack of 10)
units
2kbit Serial-Microwire PDIP Through Hole 8 128 x 16 bit 2.5 V 5.5 V - - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 163-2375
Mfr. Part No.CAT24C64WI-GT3
SGD0.194
Each (On a Reel of 3000)
units
64kbit Serial-I2C SOIC Surface Mount 8 8K x 8 bit 1.7 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 178-4896
Mfr. Part No.93LC56B-I/P
BrandMicrochip
SGD0.465
Each (In a Tube of 42)
units
2kbit Serial-Microwire PDIP Through Hole 8 128 x 16 bit 2.5 V 5.5 V - - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 773-7655
Mfr. Part No.CAT24C64WI-GT3
SGD0.339
Each (In a Pack of 10)
units
64kbit Serial-I2C SOIC Surface Mount 8 8K x 8 bit 1.7 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 823-1237
Mfr. Part No.24LC128T-I/MNY
BrandMicrochip
SGD0.891
Each (In a Pack of 10)
units
128kbit Serial-I2C TDFN Surface Mount 8 16K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V 8bit 3 x 2 x 0.75mm - >200yr +85 °C
RS Stock No. 178-5343
Mfr. Part No.24LC128T-I/MNY
BrandMicrochip
SGD0.83
Each (On a Reel of 3300)
units
128kbit Serial-I2C TDFN Surface Mount 8 16K x 8 bit 2.5 V 5.5 V 2.5 → 5.5V 8bit 3 x 2 x 0.75mm - >200yr +85 °C
RS Stock No. 163-2371
Mfr. Part No.CAT24C128WI-GT3
SGD0.268
Each (On a Reel of 3000)
units
128kbit Serial-I2C SOIC Surface Mount 8 16K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 773-7658
Mfr. Part No.CAT24C128WI-GT3
SGD0.414
Each (In a Pack of 10)
units
128kbit Serial-I2C SOIC Surface Mount 8 16K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 103-5095
Mfr. Part No.CAT24C512WI-GT3
SGD0.536
Each (On a Reel of 3000)
units
512kB Serial-I2C SOIC Surface Mount 8 64K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 463-7167
Mfr. Part No.BR93L66F-WE2
BrandROHM
SGD1.16
Each (In a Pack of 5)
units
4kbit Serial-Microwire SOP Surface Mount 8 256 x 16 bit 1.8 V 5.5 V 1.8 → 5.5V - 5 x 4.4 x 1.5mm - 40yr +85 °C
RS Stock No. 755-9843
Mfr. Part No.CAT24C512WI-GT3
SGD0.87
Each
units
512kB Serial-I2C SOIC Surface Mount 8 64K x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 178-4099
Mfr. Part No.24LC64-E/SN
BrandMicrochip
SGD0.658
Each (In a Tube of 100)
units
64kB Serial-I2C SOIC Surface Mount 8 8K x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS Stock No. 823-3318
Mfr. Part No.24LC64-E/SN
BrandMicrochip
SGD0.715
Each (In a Pack of 20)
units
64kB Serial-2 Wire, Serial-I2C SOIC Surface Mount 8 8K x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS Stock No. 686-2387
Mfr. Part No.M24C02-RDW6TP
SGD0.168
Each (In a Pack of 25)
units
2kbit Serial-I2C TSSOP Surface Mount 8 256 x 8 bit 1.8 V 5.5 V 1.8 → 5.5V - 3 x 4.4 x 1mm - 40yr +85 °C
RS Stock No. 131-2740
Mfr. Part No.BR24G512F-3AGTE2
BrandROHM
SGD1.264
Each (In a Pack of 5)
units
512kbit Serial-I2C SOP Surface Mount 8 64K x 8 bit 1.7 V 5.5 V - 8bit 5 x 4.4 x 1.5mm - Minimum of 40yr +85 °C
RS Stock No. 163-0914
Mfr. Part No.CAT93C66VI-GT3
SGD0.189
Each (On a Reel of 3000)
units
4kbit Serial-Microwire SOIC Surface Mount 8 512 x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 781-5004
Mfr. Part No.CAT93C66VI-GT3
SGD0.546
Each (In a Pack of 10)
units
4kbit Serial-Microwire SOIC Surface Mount 8 512 x 8 bit 1.8 V 5.5 V - 8bit 5 x 4 x 1.5mm - 100yr +85 °C
RS Stock No. 168-6376
Mfr. Part No.M24C02-RDW6TP
SGD0.114
Each (On a Reel of 4000)
units
2kbit Serial-I2C TSSOP Surface Mount 8 256 x 8 bit 1.8 V 5.5 V 1.8 → 5.5V - 3 x 4.4 x 1mm - 40yr +85 °C