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. 822-8455
Mfr. Part No.AT45DB321E-SHF-B
€2.46
Each (In a Pack of 2)
units
34603008bit SPI SOIC 8 8192 pages x 512 bytes Surface Mount - 2.3 V 3.6 V - - - - 5.4 x 5.35 x 1.91mm
RS Stock No. 168-7913
Mfr. Part No.AT45DB321E-SHF-B
€2.174
Each (In a Tube of 90)
units
34603008bit SPI SOIC 8 8192 pages x 512 bytes Surface Mount - 2.3 V 3.6 V - - - - 5.4 x 5.35 x 1.91mm
RS Stock No. 124-2664
Mfr. Part No.S29GL128P90FFIR20
€4.245
Each (In a Pack of 2)
units
128Mbit CFI FPBGA 64 128M x 1 bit Surface Mount - 3 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 124-2663
Mfr. Part No.S29GL128P90FFIR10
€4.25
Each
units
128Mbit CFI FPBGA 64 128M x 1 bit Surface Mount - 3 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 177-5286
Mfr. Part No.S29GL128P90FFIR10
€3.397
Each (In a Tray of 180)
units
128Mbit CFI FPBGA 64 128M x 1 bit Surface Mount - 3 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 177-5287
Mfr. Part No.S29GL128P90FFIR20
€3.397
Each (In a Tray of 180)
units
128Mbit CFI FPBGA 64 128M x 1 bit Surface Mount - 3 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 145-9393
Mfr. Part No.SST26WF080B-104I/SN
BrandMicrochip
€0.661
Each (In a Tube of 100)
units
8Mbit SPI SOIC 8 1M x 8 bit Surface Mount Split Gate 1.65 V 1.95 V Symmetrical - - - 4.9 x 3.9 x 1.25mm
RS Stock No. 165-6782
Mfr. Part No.AT45DB641E-MWHN-Y
€3.274
Each (In a Tray of 338)
units
69206016bit SPI VDFN 8 32768 pages x 256 bytes Surface Mount - 1.65 V 3.6 V - - - - 8.1 x 6.1 x 0.95mm
RS Stock No. 841-7500
Mfr. Part No.SST26VF016B-104I/SM
BrandMicrochip
€1.154
Each (In a Pack of 5)
units
16Mbit Quad-SPI SOIJ 8 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5.26 x 5.25 x 1.98mm
RS Stock No. 165-4123
Mfr. Part No.SST26VF016B-104I/SM
BrandMicrochip
€1.059
Each (In a Tube of 90)
units
16Mbit Quad-SPI SOIJ 8 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5.26 x 5.25 x 1.98mm
RS Stock No. 823-0785
Mfr. Part No.SST25VF020-20-4I-SAE
BrandMicrochip
€0.644
Each (In a Pack of 10)
units
2Mbit SPI SOIC 8 256K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5 x 4 x 1.5mm
RS Stock No. 822-8470
Mfr. Part No.AT45DB641E-MWHN-Y
€3.94
Each (In a Pack of 2)
units
69206016bit SPI VDFN 8 32768 pages x 256 bytes Surface Mount - 1.65 V 3.6 V - - - - 8.1 x 6.1 x 0.95mm
RS Stock No. 146-0230
Mfr. Part No.SST25VF020-20-4I-SAE
BrandMicrochip
€0.587
Each (In a Tube of 100)
units
2Mbit SPI SOIC 8 256K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5 x 4 x 1.5mm
RS Stock No. 869-6195
Mfr. Part No.SST26WF080B-104I/SN
BrandMicrochip
€0.746
Each (In a Pack of 10)
units
8Mbit SPI SOIC 8 1M x 8 bit Surface Mount Split Gate 1.65 V 1.95 V Symmetrical - - - 4.9 x 3.9 x 1.25mm
RS Stock No. 193-8801
Mfr. Part No.S29GL01GT10FHI010
€9.39
Each
units
1024Mbit CFI BGA 64 128M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 177-9784
Mfr. Part No.SST25VF016B-50-4C-QAF
BrandMicrochip
€0.716
Each (In a Pack of 5)
units
16Mbit Serial-SPI WSON 8 - Surface Mount Split Gate 2.7 V 3.6 V - - - - 6 x 5 x 0.75mm
RS Stock No. 197-6861
Mfr. Part No.S25HL512TFABHI010
€5.426
Each (In a Tray of 338)
units
512Mbit SPI - 24 - - NOR - 3 V - - - - -
RS Stock No. 193-8905
Mfr. Part No.S29GL512S11TFIV20
€5.792
Each (In a Tray of 91)
units
512Mbit CFI TSOP 56 64M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 18.5 x 14.1 x 1.05mm
RS Stock No. 807-3848
Mfr. Part No.SST25VF040B-50-4I-S2AF
BrandMicrochip
€0.73
Each (In a Pack of 10)
units
4Mbit SPI SOIC 8 512K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5.4 x 5.4 x 1.91mm
RS Stock No. 798-5371
Mfr. Part No.SST25VF016B-50-4C-S2AF
BrandMicrochip
€1.246
Each (In a Pack of 5)
units
16Mbit SPI SOIC 8 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5.4 x 5.4 x 1.91mm