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. 193-8739
Mfr. Part No.S25FL256LAGNFV010
MYR15.754
Each (In a Tray of 338)
units
256Mbit SPI WSON 8 32M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 8 x 6 x 0.75mm
RS Stock No. 188-2762
Mfr. Part No.W25N01GWTBIG
BrandWinbond
MYR16.156
Each (In a Pack of 5)
units
1Gbit Quad-SPI TFBGA 24 128M x 8 bit Surface Mount SLC NAND 1.7 V 1.95 V - - - - 8.1 x 6.1 x 0.85mm
RS Stock No. 193-8924
Mfr. Part No.S29JL032J70TFI410
MYR17.822
Each (In a Pack of 5)
units
32Mbit CFI TSOP 48 4M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 18.4 x 12 x 1.05mm
RS Stock No. 193-8721
Mfr. Part No.S25FL064LABNFI010
MYR10.701
Each (In a Tray of 490)
units
64Mbit SPI WSON 8 8M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 8 x 6 x 0.75mm
RS Stock No. 124-2654
Mfr. Part No.S25FL512SAGBHIC10
MYR30.90
Each
units
512Mbit SPI BGA 24 128M x 4 bit, 256M x 2 bit, 512M x 1 bit Surface Mount NOR 2.7 V 3.6 V - - - - 8 x 6 x 0.9mm
RS Stock No. 188-2527
Mfr. Part No.W25Q256JVFIQ
BrandWinbond
MYR11.485
Each (In a Tube of 44)
units
256Mbit Quad-SPI SOIC 16 32M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 10.49 x 7.59 x 2.34mm
RS Stock No. 181-7499
Mfr. Part No.S25FL128SAGMFIR00
MYR15.733
Each (In a Pack of 3)
units
- - - - - - - - - - - - - -
RS Stock No. 171-1483
Mfr. Part No.S29GL128S90TFI010
MYR15.812
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. 197-5864
Mfr. Part No.SST39SF010A-55-4I-NHE-T
BrandMicrochip
MYR7.053
Each (On a Reel of 750)
units
1Mbit Parallel PLCC-32 32 128 k x 8 - NOR 4.5 V 5.5 V - - - - -
RS Stock No. 914-2734
Mfr. Part No.MX29F040CQI-70G
BrandMacronix
MYR9.605
Each (In a Pack of 2)
units
4Mbit Parallel PLCC 32 512K x 8 bit Through Hole - 4.5 V 5.5 V - - - - 14.12 x 11.5 x 2.89mm
RS Stock No. 170-3135
Mfr. Part No.MX29LV040CQC-70G
BrandMacronix
MYR10.974
Each (In a Tube of 32)
units
4Mbit Parallel PLCC 32 512K x 8 bit Surface Mount - 2.7 V 3.6 V - - - - 11.5 x 14.12 x 2.89mm
RS Stock No. 193-8782
Mfr. Part No.S29AL008J55TFIR20
MYR7.332
Each (In a Tray of 96)
units
8Mbit CFI TSOP 48 1M x 8 bit Surface Mount NOR 3 V 3.6 V - - - - 18.4 x 12 x 1.05mm
RS Stock No. 193-8725
Mfr. Part No.S25FL128LAGMFI000
MYR14.251
Each (In a Tray of 240)
units
128Mbit SPI SOIC 16 16M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 10.3 x 7.5 x 2.55mm
RS Stock No. 193-8860
Mfr. Part No.S29GL256P10TFI020
MYR38.18
Each (In a Pack of 2)
units
256Mbit CFI TSOP 56 32M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 18.5 x 14.1 x 1.05mm
RS Stock No. 197-6872
Mfr. Part No.S25HS512TFABHI010
MYR32.301
Each (In a Tray of 338)
units
512Mbit SPI - 24 - - NOR - 1.8 V - - - - -
RS Stock No. 181-8322
Mfr. Part No.S25FS512SAGNFI011
MYR30.59
Each
units
512Mbit SPI SOIC 16 64M x 8 bit Surface Mount NOR 1.7 V 2 V - - - - 10.3 x 7.5 x 2.55mm
RS Stock No. 124-9979
Mfr. Part No.LE25U40CMC-AH
MYR1.454
Each (On a Reel of 2000)
units
4Mbit SPI SOP J 8 512K x 8 bit Surface Mount - 2.3 V 3.6 V Symmetrical - - - 4.9 x 3.9 x 1.5mm
RS Stock No. 193-8843
Mfr. Part No.S29GL128P11FFIV20
MYR19.817
Each (In a Tray of 180)
units
128Mbit CFI BGA 64 16M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 13 x 11 x 1mm
RS Stock No. 188-2533
Mfr. Part No.W25Q64JVSSIM
BrandWinbond
MYR4.371
Each (In a Tube of 90)
units
64Mbit Quad-SPI SOIC 8 8M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 5.38 x 5.38 x 1.91mm
RS Stock No. 193-8801
Mfr. Part No.S29GL01GT10FHI010
MYR73.00
Each
units
1024Mbit CFI BGA 64 128M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 13 x 11 x 1mm