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. 822-8461
Mfr. Part No.AT45DB041E-SSHN2B-B
MYR4.36
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. 173-2859
Mfr. Part No.AT45DB041E-SSHN-B
MYR4.174
Each (On a Reel of 4000)
units
- - - - - - - - - - - - - -
RS Stock No. 822-8473
Mfr. Part No.AT25SF041-SSHD-B
MYR1.606
Each (In a Pack of 10)
units
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 168-7915
Mfr. Part No.AT25SF041-SSHD-B
MYR1.463
Each (In a Tube of 98)
units
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 165-3544
Mfr. Part No.SST39VF1601-70-4I-EKE
BrandMicrochip
MYR11.261
Each (In a Tray of 96)
units
16Mbit Parallel TSOP 48 1M x 16 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 18.5 x 12.2 x 1.05mm
RS Stock No. 723-8794
Mfr. Part No.SST39VF1601-70-4I-EKE
BrandMicrochip
MYR11.83
Each
units
16Mbit Parallel TSOP 48 1M x 16 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 18.5 x 12.2 x 1.05mm
RS Stock No. 822-8455
Mfr. Part No.AT45DB321E-SHF-B
MYR13.105
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
MYR10.993
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. 723-8836
Mfr. Part No.SST49LF008A-33-4C-EIE
BrandMicrochip
MYR18.37
Each
units
8Mbit Parallel TSOP 40 1024K x 8 bit Surface Mount Split Gate 3 V 3.6 V Symmetrical - - - 18.5 x 10.1 x 1.05mm
RS Stock No. 144-5801
Mfr. Part No.SST49LF008A-33-4C-EIE
BrandMicrochip
MYR17.81
Each (In a Tray of 120)
units
8Mbit Parallel TSOP 40 1024K x 8 bit Surface Mount Split Gate 3 V 3.6 V Symmetrical - - - 18.5 x 10.1 x 1.05mm
RS Stock No. 869-6205
Mfr. Part No.SST26VF064B-104I/MF
BrandMicrochip
MYR11.93
Each (In a Pack of 2)
units
64Mbit SPI WDFN 8 8M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 6 x 5 x 0.75mm
RS Stock No. 146-0301
Mfr. Part No.SST26VF064B-104I/MF
BrandMicrochip
MYR11.784
Each (In a Tube of 98)
units
64Mbit SPI WDFN 8 8M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical - - - 6 x 5 x 0.75mm
RS Stock No. 711-7972
Mfr. Part No.A25L080-F
MYR4.50
Each (In a Pack of 2)
units
8Mbit SPI PDIP 8 - Through Hole - 2.7 V 3.6 V Symmetrical - - - 9.14 x 6.6 x 3.3mm
RS Stock No. 193-8822
Mfr. Part No.S29GL064N90FFI010
MYR24.905
Each (In a Pack of 2)
units
64Mbit CFI BGA 64 8M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 177-5292
Mfr. Part No.S25FL128SAGBHIA00
MYR10.579
Each (In a Tray of 338)
units
128Mbit SPI BGA 24 32M x 4 bit, 64M x 2 bit, 128M x 1 bit Surface Mount NOR 2.7 V 3.6 V - - - - 8 x 6 x 0.9mm
RS Stock No. 182-0118
Mfr. Part No.S34MS01G100BHI000
MYR22.319
Each (In a Tray of 210)
units
1Gbit ONFI BGA 63 1M x 8 bit Surface Mount NAND 1.7 V 1.95 V - - - - 11 x 9 x 0.75mm
RS Stock No. 188-2528
Mfr. Part No.W25Q32JVSSIM
BrandWinbond
MYR2.59
Each (In a Tube of 90)
units
32Mbit Quad-SPI SOIC 8 4M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 5.38 x 5.38 x 1.91mm
RS Stock No. 181-7490
Mfr. Part No.S25FL128SAGMFIG01
MYR15.733
Each (In a Pack of 3)
units
- - - - - - - - - - - - - -
RS Stock No. 124-2667
Mfr. Part No.S29GL256P11FFI010
MYR31.84
Each
units
256Mbit CFI FPBGA 64 256M x 1 bit Surface Mount - 2.7 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 162-8880
Mfr. Part No.LE25U20AMB-AH
MYR1.256
Each (On a Reel of 2000)
units
2Mbit SPI SOP-K 8 256K x 8 bit Surface Mount - 2.3 V 3.6 V Symmetrical - - - 4.9 x 3.9 x 1.5mm