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. 178-4946
Mfr. Part No.25AA1024-I/P
BrandMicrochip
PHP186.045
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. 687-8997
Mfr. Part No.25AA1024-I/P
BrandMicrochip
PHP197.56
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
PHP73.83
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. 454-173
Mfr. Part No.25LC256-I/P
BrandMicrochip
PHP86.395
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. 178-4106
Mfr. Part No.93C56-E/SN
BrandMicrochip
PHP34.031
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. 687-9127
Mfr. Part No.24FC512-I/P
BrandMicrochip
PHP91.08
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. 823-3371
Mfr. Part No.93C56-E/SN
BrandMicrochip
PHP34.035
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. 178-4947
Mfr. Part No.24FC512-I/P
BrandMicrochip
PHP83.126
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. 454-191
Mfr. Part No.24LC512-I/P
BrandMicrochip
PHP91.895
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. 178-4921
Mfr. Part No.24LC512-I/P
BrandMicrochip
PHP83.058
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
PHP185.729
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. 454-056
Mfr. Part No.25LC1024-I/P
BrandMicrochip
PHP189.17
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
PHP191.00
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
PHP182.653
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
PHP111.322
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. 454-179
Mfr. Part No.25LC512-I/P
BrandMicrochip
PHP114.185
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. 823-3380
Mfr. Part No.93LC66A/SN
BrandMicrochip
PHP14.421
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. 178-4108
Mfr. Part No.93LC66A/SN
BrandMicrochip
PHP14.42
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. 912-6915
Mfr. Part No.24LC256T-I/SN
BrandMicrochip
PHP46.06
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. 178-4143
Mfr. Part No.24LC16B-I/P
BrandMicrochip
PHP17.88
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