Flash Memory

Flash memory is a type of non-volatile memory storage. This means that it can be electrically erased and programmed at byte-level, and it retains data regardless of a power source. Flash memory ICs are used within circuits to add data storage to an application.

Flash memory is a type of EEPROM (Electronically Erasable Programmable Read-Only Memory). EEPROM ICs can erase any byte of memory, which flash memory erases chunks or blocks of memory at a time. Flash memory does have a limited life in terms of the number of write cycles and tends to be used for programmed storage that is infrequently changed.

The memory size of a flash device refers to the capacity for data storage. This is often given in Mbit or MB.

You can learn more in our comprehensive guide to flash memory.

How does flash memory work?

Flash memory ICs work by retaining small parts of electricity between its transistors, allowing information to be stored with or without power. Flash stores data even when the power is switched off. Unlike RAM which loses data when the power is switched off.

What is flash memory used for?

Flash memory ICs are used in digital cameras, smartphones, computers, solid-state drives (SSD) and video game consoles. Flash memory is also found in scientific, medical and industrial applications.

What is the difference between NOR flash and NAND flash?

NOR

  • NOR flash memory provides a faster speed as possessing random access capabilities, a good choice for mobile devices as it is suitable to store large quantities of code.
  • The erase and write function is slower than NAND.
  • Hosts a larger memory cell size than NAND.
  • Limiting scaling capabilities make bit density achievable.

NAND

  • Provides fast rewritable and erase capabilities but is a little slower than NOR within the read speed.
  • NAND flash memory is a popular choice for those needing a flash drive for digital video, data storage and music. This is because of NAND's high speed and high capacity alongside being a flash memory that is cheap as the cost per bit is generally lower.
  • Quickly re-write data, over and over again.
  • Stores a large quantity of data and commonly used for USB sticks, smartphones and cameras.

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Description Price Memory Size Interface Type Package Type Pin Count Organisation Mounting Type Cell Type Minimum Operating Supply Voltage Maximum Operating Supply Voltage Block Organisation Length Height Width Dimensions
RS Stock No. 165-4141
Mfr. Part No.SST26VF064B-104I/SO
BrandMicrochip
£1.81
Each (In a Tube of 47)
Units
64Mbit SPI SOIC 16 8M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 10.3 x 7.5 x 2.05mm
RS Stock No. 173-2859
Mfr. Part No.AT45DB041E-SSHN-B
£0.679
Each (On a Reel of 4000)
Units
4194304bit SPI SOIC 8 2048 pages x 256 bytes Surface Mount - 1.65 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 869-6176
Mfr. Part No.SST26VF064B-104I/SO
BrandMicrochip
£1.965
Each (In a Pack of 2)
Units
64Mbit SPI SOIC 16 8M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 10.3 x 7.5 x 2.05mm
RS Stock No. 822-8461
Mfr. Part No.AT45DB041E-SSHN2B-B
£0.838
Each (In a Pack of 5)
Units
4194304bit SPI SOIC 8 2048 pages x 256 bytes Surface Mount - 1.65 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 165-3434
Mfr. Part No.SST25VF010A-33-4I-SAE
BrandMicrochip
£0.382
Each (In a Tube of 100)
Units
1Mbit SPI SOIC 8 128K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 4 x 5 x 1.5mm
RS Stock No. 723-8726
Mfr. Part No.SST25VF010A-33-4I-SAE
BrandMicrochip
£0.43
Each (In a Pack of 5)
Units
1Mbit SPI SOIC 8 128K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 4 x 5 x 1.5mm
RS Stock No. 824-3072
Mfr. Part No.SST25VF080B-50-4C-S2AF
BrandMicrochip
£0.792
Each (In a Pack of 10)
Units
8Mbit SPI SOIC 8 1M x 8 Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 5 x 4 x 1.5mm
RS Stock No. 146-0267
Mfr. Part No.SST25VF080B-50-4C-S2AF
BrandMicrochip
£0.74
Each (In a Tube of 90)
Units
8Mbit SPI SOIC 8 1M x 8 Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 5 x 4 x 1.5mm
RS Stock No. 889-5317
Mfr. Part No.SST49LF008A-33-4C-NHE
BrandMicrochip
£2.78
Each (In a Tube of 30)
Units
8Mbit Parallel PLCC 32 1024K x 8 bit Surface Mount Split Gate 3 V 3.6 V Symmetrical - - - 11.51 x 14.05 x 2.84mm
RS Stock No. 723-8839
Mfr. Part No.SST49LF008A-33-4C-NHE
BrandMicrochip
£3.45
Each
Units
8Mbit Parallel PLCC 32 1024K x 8 bit Surface Mount Split Gate 3 V 3.6 V Symmetrical - - - 11.51 x 14.05 x 2.84mm
RS Stock No. 165-2088
Mfr. Part No.SST39SF010A-70-4I-NHE
BrandMicrochip
£0.909
Each (In a Tube of 30)
Units
1MB Parallel PLCC 32 128K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 14.05 x 11.51 x 2.84mm
RS Stock No. 145-9062
Mfr. Part No.SST39SF010A-70-4C-NHE
BrandMicrochip
£0.974
Each (In a Tube of 30)
Units
1MB Parallel PLCC 32 128K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 14.05 x 11.51 x 2.84mm
RS Stock No. 823-4504
Mfr. Part No.SST39SF010A-70-4I-NHE
BrandMicrochip
£1.04
Each (In a Pack of 10)
Units
1MB Parallel PLCC 32 128K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 14.05 x 11.51 x 2.84mm
RS Stock No. 823-4490
Mfr. Part No.SST39SF010A-70-4C-NHE
BrandMicrochip
£1.199
Each (In a Pack of 10)
Units
1MB Parallel PLCC 32 128K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 14.05 x 11.51 x 2.84mm
RS Stock No. 125-5537
Mfr. Part No.S29GL128P11TFI020
£3.825
Each (In a Pack of 2)
Units
128Mbit CFI, Parallel TSOP 56 8M x 16 bit Surface Mount NOR 2.7 V 3.6 V - - - - 18.5 x 14.1 x 1.05mm
RS Stock No. 165-6714
Mfr. Part No.AT45DB081E-SSHN-B
£1.059
Each (In a Tube of 98)
Units
8650752bit SPI SOIC 8 4096 pages x 256 bytes Surface Mount - 1.7 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 822-8467
Mfr. Part No.AT45DB081E-SSHN-B
£1.152
Each (In a Pack of 5)
Units
8650752bit SPI SOIC 8 4096 pages x 256 bytes Surface Mount - 1.7 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 171-1480
Mfr. Part No.S29GL128P11TFI020
£3.90
Each (In a Tray of 91)
Units
128Mbit CFI, Parallel TSOP 56 8M x 16 bit Surface Mount NOR 2.7 V 3.6 V - - - - 18.5 x 14.1 x 1.05mm
RS Stock No. 145-9064
Mfr. Part No.SST39SF040-70-4I-NHE
BrandMicrochip
£1.22
Each (In a Tube of 30)
Units
4MB Parallel PLCC 32 512K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 14.05 x 11.51 x 2.84mm
RS Stock No. 823-4526
Mfr. Part No.SST39SF040-70-4I-NHE
BrandMicrochip
£1.398
Each (In a Pack of 5)
Units
4MB Parallel PLCC 32 512K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 14.05 x 11.51 x 2.84mm