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 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
• Reliability
Disadvantages include:
• Capacity
• Varying power consumption
Can be found in the following:
• Computers
• Workstations
• Routers
• LCD screens and printers
• Electronics
• Microprocessor

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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. 171-0984
FabrikantnummerCY62177EV30LL-55ZXI
42,835 €
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32Mbit 2M x 16 bit 2M 16bit 55ns 16bit - Yes - Surface Mount TSOP 48 18.4 x 12 x 1.05mm 1.05mm
RS-stocknr. 125-7518
FabrikantnummerCY62177EV30LL-55ZXI
49,35 €
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32Mbit 2M x 16 bit 2M 16bit 55ns 16bit - Yes - Surface Mount TSOP 48 18.4 x 12 x 1.05mm 1.05mm
RS-stocknr. 125-7536
FabrikantnummerCY7C1059DV33-10ZSXI
12,69 €
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8Mbit 1M x 8 bit 1M 8bit 10ns 8bit - Yes - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS-stocknr. 188-5334
FabrikantnummerCY7C1021D-10ZSXI
2,36 €
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1Mbit 128k x 8 bit 128k 8bit 10ns 16bit 100MHz - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 171-0993
FabrikantnummerCY7C1059DV33-10ZSXI
10,198 €
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Aantal stuks
8Mbit 1M x 8 bit 1M 8bit 10ns 8bit - Yes - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS-stocknr. 188-5328
FabrikantnummerCY62158ELL-45ZSXI
8,428 €
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8Mbit 512k x 16 bit 512k 16bit 45ns 8bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 124-2945
FabrikantnummerCY62158ELL-45ZSXI
10,31 €
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8Mbit 1M x 8 bit 1M 8bit 45ns 8bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 124-2949
FabrikantnummerCY7C1021D-10ZSXI
2,83 €
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1Mbit 64K x 16 bit 64K 16bit 10ns 16bit 100MHz Yes Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
Nieuw
RS-stocknr. 198-8005
FabrikantnummerCY7C1041GN30-10ZSXIT
2,824 €
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4096kbit 256K x 16 256K 16bit 10ns - - - - - - - - -
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RS-stocknr. 198-8006
FabrikantnummerCY7C1041GN30-10ZSXIT
3,95 €
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4096kbit 256K x 16 256K 16bit 10ns - - - - - - - - -
RS-stocknr. 181-7441
FabrikantnummerCY62147EV30LL-45ZSXI
2,572 €
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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. 181-8383
FabrikantnummerCY14B256LA-SZ25XI
16,43 €
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256kbit 32K x 8 bit 32K 8bit 25ns - - - - Surface Mount SOIC 32 20.87 x 7.59 x 2.29mm 2.29mm
RS-stocknr. 181-7442
FabrikantnummerCY62148ELL-55SXIT
3,078 €
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4Mbit 512K x 8 bit 512K 8bit 45ns 8bit - Yes - Surface Mount SOIC 32 20.75 x 11.43 x 2.81mm 2.81mm
Nieuw
RS-stocknr. 198-8001
FabrikantnummerCY62157EV30LL-45ZSXIT
7,32 €
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8192kbit 512K x 16 512K 16bit 45ns - - - - - - - - -
RS-stocknr. 181-7582
FabrikantnummerCY62147EV30LL-45ZSXI
3,673 €
Each (In a Pack of 3)
Aantal stuks
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. 181-7451
FabrikantnummerCY7C1061GE30-10ZSXI
23,129 €
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16Mbit 1M x 16 bit 1M 16bit 10ns - - - Asynchronous Surface Mount TSOP 54 22.51 x 10.26 x 1.05mm 1.05mm
RS-stocknr. 193-8456
FabrikantnummerCY621472E30LL-45ZSXI
4,843 €
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4Mbit 256 k x 16 bit 256 k 16bit 45ns 16bit 1MHz Yes Asynchronous Surface Mount TSOP II 44 18.517 x 10.262 x 1.044mm 1.04mm
RS-stocknr. 182-3294
FabrikantnummerCY7C1041GN30-10BVXI
3,457 €
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Aantal stuks
4Mbit 256K x 16 bit 256K 16bit 10ns - 100MHz - Asynchronous Surface Mount BGA 48 8 x 6 x 0.79mm 0.79mm
RS-stocknr. 125-7529
FabrikantnummerCY7C1019DV33-10VXI
3,70 €
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Aantal stuks
1Mbit 128K x 8 bit 128K 8bit 10ns 8bit - Yes - Surface Mount SOJ 32 21.08 x 10.29 x 3.124mm 3.124mm
RS-stocknr. 124-2942
FabrikantnummerCY62157ELL-45ZSXI
9,83 €
Each
Aantal stuks
8Mbit 512K x 16 bit 512K 16bit 45ns 16bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm