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庫存編號 125-7528
製造零件編號CY7C1019D-10ZSXI
HK$41.76
/個 (每包:2個)
單位
1Mbit 128K x 8 bit 128K 8bit 10ns 8bit - Yes - Surface Mount TSOP 32 21.08 x 10.29 x 1.05mm 1.05mm
全新
RS庫存編號 194-8913
製造零件編號CY7C1021DV33-10VXI
HK$21.749
毎管:17 個
單位
1Mbit 64K x 16 bit 64K 16bit 10ns 16bit 1MHz - Asynchronous Surface Mount SOJ 44 1.13 x 0.405 x 0.12in 3.05mm
RS庫存編號 171-0986
製造零件編號CY7C1011DV33-10ZSXI
HK$29.44
Each (In a Tray of 270)
單位
2Mbit 128K x 16 bit 128K 16bit 10ns 16bit - Yes Asynchronous Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS庫存編號 811-5223
製造零件編號IS62WV51216BLL-55TLI
BrandISSI
HK$60.23
單位
8Mbit 512k x 16 512k 16bit 55ns 19bit - Yes - Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS庫存編號 177-5532
製造零件編號AS7C4098A-12TIN
HK$36.397
Each (In a Tray of 135)
單位
4Mbit 256K words x 16 bit 256K 16bit 12ns 18bit - Yes Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS庫存編號 170-0743
製造零件編號AS7C4098A-12JIN
HK$41.679
毎管:16 個
單位
4Mbit 256K words x 16 bit 256K 16bit 12ns 18bit - Yes Asynchronous Surface Mount SOJ 44 28.7 x 10.29 x 2.92mm 2.92mm
全新
RS庫存編號 193-8460
製造零件編號CY7C1018DV33-10VXIT
HK$16.915
個 (在毎卷:1000)
單位
1Mbit 128 k x 8 bit 128 k 8bit 10ns 8bit 1MHz - Asynchronous Through Hole SOJ 32 0.810 x 0.292 x 0.103in 2.62mm
RS庫存編號 538-209
製造零件編號AS7C4098A-12JIN
HK$45.95
單位
4Mbit 256K words x 16 bit 256K 16bit 12ns 18bit - Yes Asynchronous Surface Mount SOJ 44 28.7 x 10.29 x 2.92mm 2.92mm
RS庫存編號 181-7446
製造零件編號CY7C1041G-10ZSXI
HK$47.677
Each (In a Tray of 135)
單位
4Mbit 256K x 16 bit 256K 16bit 10ns - - - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS庫存編號 170-0742
製造零件編號AS7C34098A-12TIN
HK$36.397
Each (In a Tray of 135)
單位
4Mbit 256K words x 16 bit 256K 16bit 12ns 18bit - Yes Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS庫存編號 181-7445
製造零件編號CY7C1021DV33-10ZSXIT
HK$14.04
個 (在毎卷:1000)
單位
1Mbit 64K x 16 bit 64K 16bit 10ns - - - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS庫存編號 178-4109
製造零件編號23K256-E/ST
BrandMicrochip
HK$19.646
毎管:100 個
單位
256kbit 32768 x 8 bit 32768 8bit 50ns 16bit 20MHz - Synchronous Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm
全新
RS庫存編號 194-8930
製造零件編號CY7C1314KV18-250BZXC
HK$246.99
單位
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RS庫存編號 181-7444
製造零件編號CY62256VNLL-70ZXI
HK$12.308
Each (In a Tray of 234)
單位
256kbit 32K x 8 bit 32K 8bit 70ns - - Yes - Surface Mount TSOP 28 11.9 x 8.1 x 1.02mm 1.02mm
全新
RS庫存編號 194-8929
製造零件編號CY7C1314KV18-250BZXC
HK$189.133
Each (In a Tray of 136)
單位
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