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. 165-2108
Mfr. Part No.SST39VF3202C-70-4I-EKE
BrandMicrochip
HK$24.623
Each (In a Tray of 96)
units
32Mbit Parallel TSOP 48 2M 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. 824-6529
Mfr. Part No.SST39VF3202C-70-4I-EKE
BrandMicrochip
HK$26.87
Each (In a Pack of 5)
units
32Mbit Parallel TSOP 48 2M 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. 168-7918
Mfr. Part No.AT25SF041-SHD-B
HK$2.972
Each (In a Tube of 90)
units
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.4 x 5.35 x 1.91mm
RS Stock No. 822-8486
Mfr. Part No.AT25SF041-SHD-B
HK$3.255
Each (In a Pack of 10)
units
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.4 x 5.35 x 1.91mm
RS Stock No. 165-4123
Mfr. Part No.SST26VF016B-104I/SM
BrandMicrochip
HK$12.674
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. 841-7500
Mfr. Part No.SST26VF016B-104I/SM
BrandMicrochip
HK$12.306
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. 168-7916
Mfr. Part No.AT25DN512C-SSHF-B
HK$2.457
Each (In a Tube of 98)
units
512kbit SPI SOIC 8 - Surface Mount - 2.3 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 168-7915
Mfr. Part No.AT25SF041-SSHD-B
HK$2.527
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. 822-8473
Mfr. Part No.AT25SF041-SSHD-B
HK$2.853
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. 822-8477
Mfr. Part No.AT25DN512C-SSHF-B
HK$2.90
Each (In a Pack of 10)
units
512kbit SPI SOIC 8 - Surface Mount - 2.3 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS Stock No. 823-4490
Mfr. Part No.SST39SF010A-70-4C-NHE
BrandMicrochip
HK$11.561
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. 165-6782
Mfr. Part No.AT45DB641E-MWHN-Y
HK$37.013
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. 145-9062
Mfr. Part No.SST39SF010A-70-4C-NHE
BrandMicrochip
HK$11.549
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. 822-8470
Mfr. Part No.AT45DB641E-MWHN-Y
HK$41.065
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. 170-3142
Mfr. Part No.MX29LV320ETTI-70G
BrandMacronix
HK$20.027
Each (In a Tray of 96)
units
32Mbit Parallel TSOP 48 2M x 16 bit, 4M x 8 bit Surface Mount - 2.7 V 3.6 V - - - - 18.5 x 12.1 x 1.05mm
RS Stock No. 914-0677
Mfr. Part No.MX25L512EMI-10G
BrandMacronix
HK$3.414
Each (In a Pack of 20)
units
512kbit Serial SOP 8 256k x 2 bit Surface Mount NOR 2.7 V 3.6 V - - - - 5.03 x 4 x 1.55mm
RS Stock No. 145-9043
Mfr. Part No.SST25VF040B-50-4I-SAE
BrandMicrochip
HK$7.004
Each (In a Tube of 100)
units
4Mbit SPI SOIC 8 128K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - - - - 5 x 4 x 1.5mm
RS Stock No. 171-1480
Mfr. Part No.S29GL128P11TFI020
HK$36.23
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. 165-2120
Mfr. Part No.SST39SF020A-70-4C-WHE
BrandMicrochip
HK$11.14
Each (In a Tray of 208)
units
2MB Parallel TSOP 32 256K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical - - - 12.5 x 8.1 x 1.05mm
RS Stock No. 188-2685
Mfr. Part No.W25X10CLUXIG
BrandWinbond
HK$4.07
Each (In a Pack of 25)
units
1Mbit SPI USON 8 128K x 8 bit Surface Mount NOR 2.3 V 3.6 V - - - - 3.1 x 2.1 x 0.55mm