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 Dimensions Automotive Standard Maximum Operating Temperature Maximum Random Access Time
RS Stock No. 165-4188
Mfr. Part No.SST26VF032B-104I/SM
BrandMicrochip
$2.153
Each (In a Tube of 90)
units
32Mbit SPI SOIJ 8 4M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical 5.26 x 5.25 x 1.98mm - +85 °C 3ns
RS Stock No. 869-6173
Mfr. Part No.SST26VF032B-104I/SM
BrandMicrochip
$2.535
Each (In a Pack of 2)
units
32Mbit SPI SOIJ 8 4M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical 5.26 x 5.25 x 1.98mm - +85 °C 3ns
RS Stock No. 145-9062
Mfr. Part No.SST39SF010A-70-4C-NHE
BrandMicrochip
$1.775
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 - +70 °C 70ns
RS Stock No. 823-4490
Mfr. Part No.SST39SF010A-70-4C-NHE
BrandMicrochip
$2.164
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 - +70 °C 70ns
RS Stock No. 822-8455
Mfr. Part No.AT45DB321E-SHF-B
$5.165
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 - +85 °C 7ns
RS Stock No. 168-7913
Mfr. Part No.AT45DB321E-SHF-B
$3.64
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 - +85 °C 7ns
RS Stock No. 165-2106
Mfr. Part No.SST39VF1681-70-4I-EKE
BrandMicrochip
$3.969
Each (In a Tray of 96)
units
16Mbit Parallel TSOP 48 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - 18.5 x 12.2 x 1.05mm - +85 °C 70ns
RS Stock No. 711-7972
Mfr. Part No.A25L080-F
$1.445
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 - +70 °C 8ns
RS Stock No. 165-4189
Mfr. Part No.SST26VF064B-104I/SM
BrandMicrochip
$3.392
Each (In a Tube of 90)
units
64Mbit SPI SOIJ 8 8M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical 5.26 x 5.25 x 1.98mm - +85 °C 3ns
RS Stock No. 869-6179
Mfr. Part No.SST26VF064B-104I/SM
BrandMicrochip
$4.935
Each (In a Pack of 2)
units
64Mbit SPI SOIJ 8 8M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical 5.26 x 5.25 x 1.98mm - +85 °C 3ns
RS Stock No. 823-0928
Mfr. Part No.SST39VF1681-70-4I-EKE
BrandMicrochip
$4.306
Each (In a Pack of 5)
units
16Mbit Parallel TSOP 48 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - 18.5 x 12.2 x 1.05mm - +85 °C 70ns
RS Stock No. 165-2021
Mfr. Part No.SST39SF020A-70-4C-PHE
BrandMicrochip
$2.236
Each (In a Tube of 11)
units
2MB Parallel PDIP 32 256K x 8 bit Through Hole Split Gate 4.5 V 5.5 V Symmetrical 42.04 x 13.97 x 3.81mm - +70 °C 70ns
RS Stock No. 823-4510
Mfr. Part No.SST39SF020A-70-4C-PHE
BrandMicrochip
$2.43
Each (In a Pack of 5)
units
2MB Parallel PDIP 32 256K x 8 bit Through Hole Split Gate 4.5 V 5.5 V Symmetrical 42.04 x 13.97 x 3.81mm - +70 °C 70ns
RS Stock No. 145-8975
Mfr. Part No.SST39SF040-70-4C-NHE
BrandMicrochip
$2.394
Each (In a Tube of 30)
units
4Mbit Parallel PLCC 32 512K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical 11.51 x 14.05 x 2.84mm - +70 °C 70ns
RS Stock No. 841-7504
Mfr. Part No.SST26VF016B-104I/SN
BrandMicrochip
$1.732
Each (In a Pack of 5)
units
16Mbit Quad-SPI SOIC 8 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - 4.9 x 3.9 x 1.5mm - +85 °C -
RS Stock No. 723-8763
Mfr. Part No.SST39SF040-70-4C-NHE
BrandMicrochip
$2.935
Each (In a Pack of 2)
units
4Mbit Parallel PLCC 32 512K x 8 bit Surface Mount Split Gate 4.5 V 5.5 V Symmetrical 11.51 x 14.05 x 2.84mm - +70 °C 70ns
RS Stock No. 165-4133
Mfr. Part No.SST26VF016B-104I/SN
BrandMicrochip
$1.586
Each (In a Tube of 100)
units
16Mbit Quad-SPI SOIC 8 2M x 8 bit Surface Mount Split Gate 2.7 V 3.6 V - 4.9 x 3.9 x 1.5mm - +85 °C -
RS Stock No. 165-2105
Mfr. Part No.SST39VF1602-70-4I-EKE
BrandMicrochip
$3.811
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 - 18.5 x 12.2 x 1.05mm - +85 °C 70ns
RS Stock No. 170-9100
Mfr. Part No.A25L080O-F
$0.76
Each (In a Tube of 100)
units
8Mbit SPI SOP 8 - Surface Mount - 2.7 V 3.6 V Symmetrical 5 x 4 x 1.5mm - +70 °C 8ns
RS Stock No. 146-0156
Mfr. Part No.SST39VF010-70-4C-NHE
BrandMicrochip
$1.586
Each (In a Tube of 30)
units
1Mbit Parallel PLCC 32 128K x 8 bit Surface Mount Split Gate 2.7 V 3.6 V Symmetrical 11.51 x 14.05 x 2.84mm - +70 °C 70ns