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. 126-7010
Mfr. Part No.RMLV1616AGBG-5S2#AC0
$59.14
Each
units
16Mbit 1M words x 16 bit, 2M words x 8 bit 1M, 2M 8 bit, 16 bit 55ns 19 bit, 20 bit - Yes - Surface Mount FBGA 48 7.58 x 8.58 x 0.8mm 0.8mm
RS Stock No. 126-7312
Mfr. Part No.RMLV1616AGSD-5S2#AC0
$76.90
Each
units
16Mbit 1M words x 16 bit, 2M words x 8 bit 1M, 2M 8 bit, 16 bit 55ns 19 bit, 20 bit - Yes - Surface Mount TSOP 52 10.89 x 8.99 x 1mm 1mm
RS Stock No. 126-6978
Mfr. Part No.RMLV0416EGBG-4S2#AC0
$23.05
Each
units
4Mbit 256K words x 16 bit 256K 16bit 45ns 18bit - Yes - Surface Mount FBGA 48 7.58 x 8.58 x 0.8mm 0.8mm
RS Stock No. 761-7074
Mfr. Part No.R1LV0408CSA-5SI#B0
$24.26
Each
units
4Mbit 512K x 8 bit 512K 8bit 55ns - - Yes Asynchronous Surface Mount STSOP 32 - -
RS Stock No. 126-6984
Mfr. Part No.RMLV0816BGSD-4S2#AC0
$49.38
Each
units
8Mbit 1024K words x 8 bit, 512K words x 16 bit 1024K, 512K 8 bit, 16 bit 45ns 18 bit, 19 bit - Yes - Surface Mount TSOP 52 10.89 x 8.99 x 1mm 1mm
RS Stock No. 126-6975
Mfr. Part No.RMLV0408EGSA-4S2#AA1
$28.48
Each
units
4Mbit 512K words x 8 bit 512K 8bit 45ns 19bit - Yes - Surface Mount sTSOP 32 11.9 x 8.1 x 1mm 1mm
RS Stock No. 126-6983
Mfr. Part No.RMLV0816BGSB-4S2#AA0
$49.38
Each
units
8Mbit 512K words x 16 bit 512K 16bit 45ns 19bit - Yes - Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS Stock No. 761-7071
Mfr. Part No.R1LV0216BSB-5SR#B0
$6.22
Each
units
2Mbit 128K x 16 bit 128K 16bit 55ns - - Yes Asynchronous Surface Mount TSOP 44 - -
RS Stock No. 126-6981
Mfr. Part No.RMLV0816BGBG-4S2#AC0
$39.99
Each
units
8Mbit 512K words x 16 bit 512K 16bit 45ns 19bit - Yes - Surface Mount FBGA 48 7.58 x 8.58 x 0.8mm 0.8mm
RS Stock No. 901-5809
Mfr. Part No.R1LP0108ESA-5SI#B0
$10.41
Each (In a Bag of 2)
units
1Mbit 128K x 8 bit 128K 8bit 55ns 8bit 1MHz Yes - Surface Mount TSOP 32 11.9 x 8.1 x 1mm 1mm
RS Stock No. 901-5802
Mfr. Part No.R1LP0108ESN-5SI#B0
$6.01
Each (In a Bag of 2)
units
1Mbit 128K x 8 bit 128K 8bit 55ns 8bit 1MHz Yes - Surface Mount SOP 32 20.95 x 11.5 x 2.85mm 2.85mm
RS Stock No. 767-5967
Mfr. Part No.R1WV6416RSD-5SI#B0
$137.90
Each
units
64Mbit 4M words x 16 bit 4M 16bit 55ns - - Yes Asynchronous Surface Mount μTSOP II 52 10.89 x 8.99 x 1mm 1mm
RS Stock No. 767-5963
Mfr. Part No.R1WV6416RBG-7SI#B0
$78.76
Each
units
64Mbit 4M words x 16 bit 4M 16bit 70ns - - Yes Asynchronous Surface Mount FBGA 48 8.5 x 11 x 0.8mm 0.8mm
RS Stock No. 901-5815
Mfr. Part No.R1LV0108ESN-5SI#B0
$6.01
Each (In a Bag of 2)
units
1Mbit 128K x 8 bit 128K 8bit 55ns 8bit 1MHz Yes - Surface Mount SOP 32 20.95 x 11.5 x 2.85mm 2.85mm
RS Stock No. 126-6969
Mfr. Part No.R1LV1616HSA-4SI#B1
$94.40
Each
units
16Mbit 1M words x 16 bit, 2M words x 8 bit 1M, 2M 8 bit, 16 bit 45ns 19 bit, 20 bit - Yes - Surface Mount TSOP 48 18.5 x 12.1 x 1.05mm 1.05mm
RS Stock No. 901-5843
Mfr. Part No.RMLV0414EGSB-4S2#AA0
$23.43
Each
units
4Mbit 256K x 16 bit 256K 16bit 45ns 16bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1mm 1mm
RS Stock No. 126-6972
Mfr. Part No.R1LV5256ESA-5SI#B1
$6.01
Each
units
256kbit 32K words x 8 bit 32K 8bit 55ns 15bit - Yes - Surface Mount SOP 28 11.9 x 8.1 x 1mm 1mm
RS Stock No. 126-6979
Mfr. Part No.RMLV0416EGSB-4S2#AA1
$28.48
Each
units
4Mbit 256K words x 16 bit 256K 16bit 45ns 18bit - Yes - Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS Stock No. 901-5761
Mfr. Part No.R1RW0408DGE-2PR#B0
$37.14
Each
units
4Mbit 512K x 8 bit 512K 8bit 12ns 8bit 1MHz - - Surface Mount SOJ 36 23.62 x 10.29 x 3.05mm 3.05mm
RS Stock No. 126-7313
Mfr. Part No.RMWV3216AGBG-5S2#AC0
$124.51
Each
units
32Mbit 2M words x 16 bit 2M 16bit 55ns 21bit - Yes - Surface Mount FBGA 48 7.58 x 8.58 x 0.8mm 0.8mm