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. 454-173
Mfr. Part No.25LC256-I/P
BrandMicrochip
PHP65.61
Each (In a Pack of 2)
units
256kbit Serial-SPI PDIP Through Hole 8 32K 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. 687-8997
Mfr. Part No.25AA1024-I/P
BrandMicrochip
PHP165.54
Each
units
1Mbit Serial-SPI PDIP Through Hole 8 128 x 8 bit 1.8 V 5.5 V 1.8 → 5.5V - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 178-3995
Mfr. Part No.25LC256-I/P
BrandMicrochip
PHP60.564
Each (In a Tube of 100)
units
256kbit Serial-SPI PDIP Through Hole 8 32K 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. 178-4946
Mfr. Part No.25AA1024-I/P
BrandMicrochip
PHP162.582
Each (In a Tube of 60)
units
1Mbit Serial-SPI PDIP Through Hole 8 128 x 8 bit 1.8 V 5.5 V 1.8 → 5.5V - 9.27 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 687-9127
Mfr. Part No.24FC512-I/P
BrandMicrochip
PHP74.19
Each
units
512kbit Serial-I2C PDIP Through Hole 8 64K x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 178-4106
Mfr. Part No.93C56-E/SN
BrandMicrochip
PHP29.841
Each (In a Tube of 100)
units
2kB Serial-Microwire SOIC Surface Mount 8 128 x 8 bit, 256 x 8 bit 4.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS Stock No. 178-4947
Mfr. Part No.24FC512-I/P
BrandMicrochip
PHP69.085
Each (In a Tube of 60)
units
512kbit Serial-I2C PDIP Through Hole 8 64K x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 823-3371
Mfr. Part No.93C56-E/SN
BrandMicrochip
PHP32.414
Each (In a Pack of 10)
units
2kB Serial-Microwire SOIC Surface Mount 8 128 x 8 bit, 256 x 8 bit 4.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS Stock No. 178-4921
Mfr. Part No.24LC512-I/P
BrandMicrochip
PHP77.175
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. 178-4915
Mfr. Part No.25LC1024-I/P
BrandMicrochip
PHP153.694
Each (In a Tube of 50)
units
1Mbit Serial-SPI PDIP Through Hole 8 128 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. 454-191
Mfr. Part No.24LC512-I/P
BrandMicrochip
PHP79.75
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. 454-056
Mfr. Part No.25LC1024-I/P
BrandMicrochip
PHP168.76
Each
units
1Mbit Serial-SPI PDIP Through Hole 8 128 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. 687-9196
Mfr. Part No.24AA1025-I/P
BrandMicrochip
PHP156.37
Each
units
1Mbit Serial-I2C PDIP Through Hole 8 128 x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 911-5619
Mfr. Part No.24AA1025-I/P
BrandMicrochip
PHP167.213
Each (In a Tube of 60)
units
1Mbit Serial-I2C PDIP Through Hole 8 128 x 8 bit 1.7 V 5.5 V 1.7 → 5.5V - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 178-3996
Mfr. Part No.25LC512-I/P
BrandMicrochip
PHP88.363
Each (In a Tube of 100)
units
512kbit Serial-SPI PDIP Through Hole 8 64K x 8 bit 2.5 V 5.5 V - - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 823-3380
Mfr. Part No.93LC66A/SN
BrandMicrochip
PHP13.892
Each (In a Pack of 20)
units
4kB Serial-Microwire SOIC Surface Mount 8 512 x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS Stock No. 454-179
Mfr. Part No.25LC512-I/P
BrandMicrochip
PHP99.815
Each (In a Pack of 2)
units
512kbit Serial-SPI PDIP Through Hole 8 64K x 8 bit 2.5 V 5.5 V - - 9.4 x 6.35 x 3.3mm - 200yr +85 °C
RS Stock No. 178-4108
Mfr. Part No.93LC66A/SN
BrandMicrochip
PHP12.852
Each (In a Tube of 100)
units
4kB Serial-Microwire SOIC Surface Mount 8 512 x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +125 °C
RS Stock No. 178-4143
Mfr. Part No.24LC16B-I/P
BrandMicrochip
PHP17.493
Each (In a Tube of 125)
units
16kbit Serial-I2C PDIP Through Hole 8 8 Block x 256 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. 889-5102
Mfr. Part No.24LC256-I/SN
BrandMicrochip
PHP42.651
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