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庫存編號 824-6529
製造零件編號SST39VF3202C-70-4I-EKE
BrandMicrochip
HK$26.87
/個 (每包:5個)
單位
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庫存編號 165-2108
製造零件編號SST39VF3202C-70-4I-EKE
BrandMicrochip
HK$24.623
Each (In a Tray of 96)
單位
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庫存編號 822-8486
製造零件編號AT25SF041-SHD-B
HK$3.75
/個 (每包:10個)
單位
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.4 x 5.35 x 1.91mm
RS庫存編號 168-7918
製造零件編號AT25SF041-SHD-B
HK$2.972
毎管:90 個
單位
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.4 x 5.35 x 1.91mm
RS庫存編號 165-4123
製造零件編號SST26VF016B-104I/SM
BrandMicrochip
HK$12.674
毎管:90 個
單位
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庫存編號 841-7500
製造零件編號SST26VF016B-104I/SM
BrandMicrochip
HK$12.306
/個 (每包:5個)
單位
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庫存編號 168-7915
製造零件編號AT25SF041-SSHD-B
HK$2.579
毎管:98 個
單位
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS庫存編號 168-7916
製造零件編號AT25DN512C-SSHF-B
HK$2.457
毎管:98 個
單位
512kbit SPI SOIC 8 - Surface Mount - 2.3 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS庫存編號 822-8470
製造零件編號AT45DB641E-MWHN-Y
HK$41.61
/個 (每包:2個)
單位
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庫存編號 823-4490
製造零件編號SST39SF010A-70-4C-NHE
BrandMicrochip
HK$11.561
/個 (每包:10個)
單位
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庫存編號 165-6782
製造零件編號AT45DB641E-MWHN-Y
HK$37.745
Each (In a Tray of 338)
單位
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庫存編號 822-8473
製造零件編號AT25SF041-SSHD-B
HK$2.912
/個 (每包:10個)
單位
4Mbit SPI SOIC 8 512K x 8 Surface Mount - 2.5 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS庫存編號 145-9062
製造零件編號SST39SF010A-70-4C-NHE
BrandMicrochip
HK$11.549
毎管:30 個
單位
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庫存編號 822-8477
製造零件編號AT25DN512C-SSHF-B
HK$2.941
/個 (每包:10個)
單位
512kbit SPI SOIC 8 - Surface Mount - 2.3 V 3.6 V - - - - 5.05 x 3.99 x 1.5mm
RS庫存編號 171-2186
製造零件編號W25Q128JVSIQ/TUBE
BrandWinbond
HK$13.85
毎管:90 個
單位
128Mbit SPI SOIC 8 16M x 8 Surface Mount - 2.7 V 3.6 V - - - - 5.38 x 5.38 x 1.91mm
RS庫存編號 182-0116
製造零件編號S29GL064S70TFI010
HK$27.856
Each (In a Tray of 91)
單位
64Mbit CFI TSOP 48 8M x 8 bit Surface Mount - 2.7 V 3.6 V - - - - 18.5 x 12.1 x 1.05mm
RS庫存編號 184-0047
製造零件編號S25FL256LAGBHV020
HK$31.091
Each (In a Tray of 338)
單位
256Mbit SPI BGA 24 32M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 8 x 6 x 0.95mm
RS庫存編號 171-1494
製造零件編號S34ML01G100TFI000
HK$38.64
Each (In a Tray of 96)
單位
1Gbit ONFI 1.0 TSOP 48 64M x 16 bit, 128M x 8 bit Surface Mount SLC NAND 2.7 V 3.6 V - - - - 18.5 x 12.1 x 1.05mm
RS庫存編號 193-8838
製造零件編號S29GL128P11FFI010
HK$46.00
/個 (每包:2個)
單位
128Mbit CFI BGA 64 16M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 13 x 11 x 1mm
RS庫存編號 193-8745
製造零件編號S25FL256SAGBHV200
HK$32.792
Each (In a Tray of 338)
單位
256Mbit SPI BGA 24 32M x 8 bit Surface Mount NOR 2.7 V 3.6 V - - - - 8 x 6 x 1mm