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. 826-1975
Mfr. Part No.93C46C-I/P
BrandMicrochip
MYR1.397
Each (In a Tube of 60)
units
1kbit Serial-Microwire PDIP Through Hole 8 64 x 16 bit, 128 x 8 bit 4.5 V 5.5 V - 8 bit, 16 bit 0.4 x 0.28 x 0.195in - 200yr +85 °C
New
RS Stock No. 215-3896
Mfr. Part No.24LC256-I/MS
BrandMicrochip
MYR4.141
Each (In a Tube of 100)
units
256kbit Serial-I2C MSOP Surface Mount 8 - - - - - - - - -
New
RS Stock No. 215-3894
Mfr. Part No.24LC128T-I/SN
BrandMicrochip
MYR2.69
Each (On a Reel of 3300)
units
128kbit Serial-I2C SOIC Surface Mount 8 - - - - - - - - -
RS Stock No. 197-5290
Mfr. Part No.24AA512T-I/SN
BrandMicrochip
MYR6.693
Each (On a Reel of 3300)
units
512kbit - SOIC Surface Mount 8 - - - - - - - - -
RS Stock No. 168-1612
Mfr. Part No.BR93L66FV-WE2
BrandROHM
MYR1.993
Each (In a Pack of 20)
units
4kbit Serial-3 Wire SSOP Surface Mount 8 256 x 16 bit 1.8 V 5.5 V - 16bit 4.4 x 3.35 x 1.15mm - 40yr +85 °C
RS Stock No. 463-7139
Mfr. Part No.BR24L64F-WE2
BrandROHM
MYR5.086
Each (In a Pack of 5)
units
64kbit Serial-2 Wire SOP Surface Mount 8 8K x 8 bit 1.8 V 5.5 V 1.8 → 5.5V - 5 x 4.4 x 1.5mm - 40yr +85 °C
RS Stock No. 186-9748
Mfr. Part No.CAT24C256HU4IGT3
MYR2.581
Each (In a Pack of 25)
units
256kbit - UDFN Surface Mount 8 32k x 8 bit 1.8 V 5.5 V - 8bit 2 x 3 x 0.5mm AEC-Q100 100yr +85 °C
RS Stock No. 823-3330
Mfr. Part No.25LC1024-E/MF
BrandMicrochip
MYR17.04
Each (In a Pack of 2)
units
1MB Serial-SPI DFN Surface Mount 8 131072 x 8 bit 2.5 V 5.5 V - 8bit 5 x 6 x 0.95mm - 200yr +125 °C
RS Stock No. 187-9387
Mfr. Part No.24FC04T-I/OT
BrandMicrochip
MYR0.722
Each (On a Reel of 3000)
units
4kbit Serial-2 Wire SOT-23 Surface Mount 5 256 x 8 bit 1.7 V 5.5 V 1.7 → 5.5V 8bit 2.9 x 1.6 x 1.3mm AEC-Q100 >200yr +85 °C
RS Stock No. 165-5756
Mfr. Part No.M24SR16-YDW6T/2
MYR3.295
Each (On a Reel of 4000)
units
16kbit Serial-I2C TSSOP Surface Mount 8 - 2.7 V 5.5 V - - 4.5 x 3.1 x 1.05mm - 200yr +85 °C
RS Stock No. 825-1142
Mfr. Part No.34AA02T-I/OT
BrandMicrochip
MYR0.937
Each (In a Pack of 25)
units
2kbit Serial-2 Wire, Serial-I2C SOT-23 Surface Mount 6 256 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS Stock No. 823-3393
Mfr. Part No.93LC66B-E/P
BrandMicrochip
MYR1.595
Each (In a Pack of 20)
units
4kB Serial-Microwire PDIP Through Hole 8 256 x 16 bit 2.5 V 5.5 V - 16bit 0.4 x 0.28 x 0.195in - 200yr +125 °C
RS Stock No. 197-5291
Mfr. Part No.24AA512T-I/SN
BrandMicrochip
MYR7.206
Each (In a Pack of 10)
units
512kbit - SOIC Surface Mount 8 - - - - - - - - -
RS Stock No. 127-8189
Mfr. Part No.AT93C46E-PU
BrandMicrochip
MYR1.882
Each (In a Pack of 25)
units
1kbit Serial-3 Wire PDIP Through Hole 8 64 x 16 bit 1.8 V 5.5 V - 16bit 10.16 x 7.11 x 4.95mm - 100yr +85 °C
RS Stock No. 829-6984
Mfr. Part No.M24SR64-YDW6T/2
MYR7.36
Each (In a Pack of 5)
units
64kbit Serial-I2C TSSOP Surface Mount 8 - 2.7 V 5.5 V - - 4.5 x 3.1 x 1.05mm - 200yr +85 °C
RS Stock No. 687-8644
Mfr. Part No.24LC64T-I/OT
BrandMicrochip
MYR2.05
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. 803-2128
Mfr. Part No.24AA02UIDT-I/OT
BrandMicrochip
MYR0.986
Each (In a Pack of 50)
units
2kbit Serial-2 Wire SOT-23 Surface Mount 5 128 x 8 bit 1.7 V 5.5 V - 8bit 3.1 x 1.8 x 1.3mm - 200yr +85 °C
RS Stock No. 911-5619
Mfr. Part No.24AA1025-I/P
BrandMicrochip
MYR15.612
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. 177-1437
Mfr. Part No.93LC86B-I/SN
BrandMicrochip
MYR1.923
Each (In a Tube of 100)
units
16kbit Serial-3 Wire SOIC Surface Mount 8 1024 Word x 8 bit 2.5 V 5.5 V - 8bit 4.9 x 3.9 x 1.5mm - 200yr +85 °C
RS Stock No. 178-4122
Mfr. Part No.24LC128-E/ST
BrandMicrochip
MYR3.155
Each (In a Tube of 100)
units
2kbit I2C TSSOP Surface Mount 8 128 x 16 bit 2.5 V 5.5 V - 16bit 4.5 x 3.1 x 1.05mm - 200yr +125 °C