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. Its 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 computers 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 include: 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 Simplicity Faster – quick and easy to control Used as cache memory Large size Price – expensive as it uses more chips than DRAM for the same amount of storage space High power Consumption ReliabilityDisadvantages include: Capacity Varying power consumptionCan be found in the following: Computers Workstations Routers LCD screens and printers Electronics Microprocessor

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Description Price 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 Stock No. 125-7515
Mfr. Part No.CY62167DV30LL-70BVI
kr 100,40
Each
Units
16Mbit 1M x 16 bit 1M 16bit 70ns 16bit - Yes - Surface Mount VFBGA 48 8 x 9.5 x 0.81mm 0.81mm
RS Stock No. 125-7528
Mfr. Part No.CY7C1019D-10ZSXI
kr 24,265
Each (In a Pack of 2)
Units
1Mbit 128K x 8 bit 128K 8bit 10ns 8bit - Yes - Surface Mount TSOP 32 21.08 x 10.29 x 1.05mm 1.05mm
RS Stock No. 901-5749
Mfr. Part No.R1RP0416DGE-2PR#B0
kr 187,83
Each
Units
4Mbit 256K x 16 bit 256K 16bit 12ns 16bit 1MHz - - Surface Mount SOJ 44 28.7 x 10.29 x 2.75mm 2.75mm
RS Stock No. 181-8269
Mfr. Part No.CY7C1069G30-10ZSXI-CYP
kr 296,199
Each (In a Tray of 108)
Units
16Mbit 2M x 8 bit 2M 8bit 10ns - 100MHz - Asynchronous Surface Mount TSOP 54 22.51 x 10.26 x 1.05mm 1.05mm
RS Stock No. 538-221
Mfr. Part No.AS7C4096A-12TIN
kr 45,36
Each
Units
4Mbit 512K words x 8 bit 512K 8bit 12ns 19bit - Yes Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS Stock No. 146-3217
Mfr. Part No.47L16-I/ST
BrandMicrochip
kr 5,664
Each (In a Tube of 100)
Units
16kbit 2048K x 8 - 8bit - - 1000kHz Yes Synchronous Surface Mount TSSOP 8 3.1 x 4.5 x 1.05mm 1.05mm
RS Stock No. 181-7446
Mfr. Part No.CY7C1041G-10ZSXI
kr 46,37
Each (In a Tray of 135)
Units
4Mbit 256K x 16 bit 256K 16bit 10ns - - - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 901-5821
Mfr. Part No.R1LV0208BSA-5SI#B0
kr 71,98
Each
Units
2Mbit 256K x 8 bit 256K 8bit 55ns 8bit 1MHz Yes - Surface Mount TSOP 32 11.9 x 8.1 x 1mm 1mm
RS Stock No. 182-3377
Mfr. Part No.CY7C1041GN30-10BVXI
kr 43,27
Each (In a Pack of 2)
Units
- - - - - - - - - - - - - -
RS Stock No. 181-7622
Mfr. Part No.CY7C1041G30-10ZSXI
kr 71,48
Each
Units
4Mbit 256K x 16 bit 256K 16bit 10ns - - - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 146-8883
Mfr. Part No.47L16-I/SN
BrandMicrochip
kr 6,56
Each (In a Pack of 10)
Units
16kbit 2048K x 8 - 8bit - - 1000kHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS Stock No. 901-5723
Mfr. Part No.R1LV1616RBG-5SI#B0
kr 342,07
Each
Units
16Mbit 1M x 16 bit 1M 16bit 55ns - - Yes Asynchronous Surface Mount FBGA 48 7.5 x 8.5 x 0.8mm 0.8mm
RS Stock No. 181-7442
Mfr. Part No.CY62148ELL-55SXIT
kr 30,685
Each (On a Reel of 1000)
Units
4Mbit 512K x 8 bit 512K 8bit 45ns 8bit - Yes - Surface Mount SOIC 32 20.75 x 11.43 x 2.81mm 2.81mm
RS Stock No. 170-0749
Mfr. Part No.AS7C256A-12TIN
kr 11,006
Each (In a Tray of 234)
Units
256kbit 32K words x 8 bit 32K 8bit 12ns 15bit - Yes Asynchronous Surface Mount TSOP 28 8 x 11.8 x 1.05mm 1.05mm
RS Stock No. 797-5863
Mfr. Part No.AS7C316098A-10BIN
kr 205,58
Each
Units
16Mbit 1024K x 16 bit 1024K 16bit 10ns 16bit 1MHz Yes Asynchronous Surface Mount TFBGA 48 6.05 x 8.05 x 1.05mm 1.05mm
RS Stock No. 165-9425
Mfr. Part No.DS1220AD-150+
kr 116,899
Each (In a Tube of 14)
Units
16kbit 2K x 8 bit 2K 8bit 100ns 8bit - Yes - Through Hole EDIP 24 38.1 x 18.29 x 10.67mm 10.67mm
RS Stock No. 889-5538
Mfr. Part No.23LC1024-I/SN
BrandMicrochip
kr 17,464
Each (In a Tube of 100)
Units
1Mbit 128K words x 8 bit 128Kk 8bit 5ns 24bit 20MHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 1.5mm
RS Stock No. 181-7450
Mfr. Part No.CY7C1049GN30-10ZSXI
kr 36,982
Each (In a Tray of 135)
Units
4Mbit 512K x 8 bit 512K 8bit 10ns - - - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 181-1578
Mfr. Part No.CY7C1041GN30-10ZSXI
kr 40,43
Each (In a Pack of 2)
Units
4Mbit 256 kB x 16 256k 8bit 10ns 16bit 100MHz - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 170-2073
Mfr. Part No.IDT70V28L20PFGI
BrandIDT
kr 626,265
Each (In a Tray of 6)
Units
1024kbit 64K x 16 bit 64K 16bit 20ns 16bit - Yes Asynchronous Surface Mount TQFP 100 14 x 14 x 1.4mm 1.4mm
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