SRAM

SRAM stands for Static Random Access Memory and is a type of semiconductor memory that uses bistable latching circuitry (flip-flop) to store each bit. It holds data bits in its memory so long as power is being supplied. It cannot hold data if power is removed. SRAM is used where speed or low power are needed. It’s higher density than DRAM, and less complicated structure makes it ideal to use in semiconductor memory scenarios where high capacity memory is used as seen in the working memory within computers.

SRAM is different to DRAM (dynamic RAM, which stores bits in cells consisting of a capacitor and a transistor), due to the fact that SRAM does not have to be refreshed unlike Dynamic which will lose data unless refreshed periodically. Also SRAM is faster and more expensive than DRAM.

SRAM is used for a computer’s cache memory as well as being part of the RAM digital to analogue converter found on a video card. SRAM can be designed with a general CMOS technology process with six transistors (6T memory cell) and no capacitors. Since transistors do not require power to prevent leakage, SRAM does not have to be refreshed on a regular basis:

Features

  • Data is held statically – data is held in the semiconductor memory, no need to refresh data after every read data operation as long as the power is applied to the memory
  • Three operational states which are hold, write and read
  • Bistable (cross-coupled) INVs for storage
  • Access transistors MAL and MAR – access to stored data for read and write
  • Word line, WL, controls access – WL=0 (hold operation), WL=1 (read/write operation)
  • Long data lifetime

Applications

  • Computers
  • Workstations
  • Routers
  • LCD screens and printers
  • Electronics
  • Microprocessors

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Omschrijving Prijs Memory Size Organisation Number of Words Number of Bits per Word Maximum Random Access Time Address Bus Width Clock Frequency Low Power Timing Type Mounting Type Package Type Pin Count Dimensions Height
RS-stocknr. 170-2058
FabrikantnummerIS61C1024AL-12JLI
FabrikantISSI
1,886 €
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Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 12ns 17bit - Yes Asynchronous Surface Mount SOJ 32 21.08 x 7.75 x 2.67mm 2.67mm
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RS-stocknr. 194-8896
FabrikantnummerCY7C1010DV33-10ZSXI
3,485 €
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Aantal stuks
- - - - - - - - - - - - - -
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RS-stocknr. 217-3673
Fabrikantnummer7130LA20JG
12,45 €
Each
Aantal stuks
8kbit 1K x 8 1K 8bit 20ns - - - - - - - - -
Nieuw
RS-stocknr. 217-3648
Fabrikantnummer70V24L15PFG
24,684 €
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Aantal stuks
64kbit 4K x 16 4K 16bit 15ns - - - - - - - - -
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RS-stocknr. 217-7881
Fabrikantnummer71016S15PHGI
2,382 €
Each (In a Pack of 5)
Aantal stuks
1Mbit 64K x 16 64K 16bit 12ns - - - - - - - - -
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RS-stocknr. 217-7884
Fabrikantnummer71256SA15YG
1,196 €
Each (In a Tube of 27)
Aantal stuks
256kbit 32K x 8 32K 8bit 12ns - - - - - - - - -
RS-stocknr. 125-6980
FabrikantnummerCY62148ESL-55ZAXI
5,84 €
Each
Aantal stuks
4Mbit 512k x 8 bit 512k 8bit 55ns 8bit - Yes - Surface Mount STSOP 32 11.9 x 8.1 x 1.05mm 1.05mm
RS-stocknr. 181-7441
FabrikantnummerCY62147EV30LL-45ZSXI
2,525 €
Each (In a Tray of 135)
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4Mbit 256k x 16 bit 256k 16bit 45ns 16bit - Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 170-2069
FabrikantnummerIDT7130LA25JGI
FabrikantIDT
9,638 €
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8kbit 1k x 8 bit 1k 8bit 25ns 8bit - Yes Asynchronous Surface Mount PLCC 52 19 x 19 x 3.63mm 3.63mm
RS-stocknr. 198-7989
FabrikantnummerCY62128ELL-45ZXIT
1,449 €
Each (On a Reel of 1500)
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1024kbit 128k x 8 bit 128k 8bit 45ns - - - - - - - - -
RS-stocknr. 901-5821
FabrikantnummerR1LV0208BSA-5SI#B0
6,35 €
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2Mbit 256K x 8 bit 256K 8bit 55ns 8bit 1MHz Yes - Surface Mount TSOP 32 11.9 x 8.1 x 1mm 1mm
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RS-stocknr. 194-8921
FabrikantnummerCY7C1061G30-10BVJXI
18,966 €
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- - - - - - - - - - - - - -
RS-stocknr. 126-6971
FabrikantnummerR1LV3216RSA-5SI#B1
64,94 €
Each
Aantal stuks
32Mbit 2M words x 16 bit, 4M words x 8 bit 2M, 4M 8 bit, 16 bit 55ns 20 bit, 21 bit - Yes - Surface Mount TSOP 48 18.5 x 12.1 x 1.05mm 1.05mm
RS-stocknr. 901-5777
FabrikantnummerR1RW0416DSB-0PR#D0
18,16 €
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4Mbit 256K x 16 bit 256K 16bit 10ns 16bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1mm 1mm
RS-stocknr. 538-142
FabrikantnummerAS6C62256-55SIN
FabrikantAlliance Memory
1,745 €
Each (In a Pack of 2)
Aantal stuks
256kbit 32k x 8 bit 32k 8bit 55ns 15bit - Yes Asynchronous Surface Mount SOP 28 18.49 x 8.64 x 2.49mm 2.49mm
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RS-stocknr. 194-8948
FabrikantnummerCY7C1370KV33-167AXI
25,87 €
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- - - - - - - - - - - - - -
RS-stocknr. 170-2057
FabrikantnummerIS62C1024AL-35TLI
FabrikantISSI
1,697 €
Each (In a Tray of 156)
Aantal stuks
1Mbit 128k x 8 bit 128k 8bit 35ns 17bit - Yes Asynchronous Surface Mount TSOP 32 8.1 x 18.5 x 0.95mm 0.95mm
RS-stocknr. 901-5742
FabrikantnummerR1RP0408DGE-2PI#B0
13,96 €
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Aantal stuks
4Mbit 512K x 8 bit 512K 8bit 12ns 8bit 1MHz - - Surface Mount SOJ 36 23.62 x 10.29 x 2.75mm 2.75mm
RS-stocknr. 125-7519
FabrikantnummerCY62187EV30LL-55BAXI
68,62 €
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Aantal stuks
64Mbit 4M x 16 bit 4M 16bit 55ns 16bit - Yes - Surface Mount VFBGA 48 8 x 9.5 x 1.2mm 1.2mm
RS-stocknr. 198-8003
FabrikantnummerCY7C1021D-10ZSXIT
1,984 €
Each (On a Reel of 1000)
Aantal stuks
1024kbit 64k x 16 bit 65536 16bit 10ns - - - - - - - - -