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

...
Lees meer Lees minder

Filters

61 - 80 van 489 producten worden weergegeven
Resultaten per pagina
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. 901-5773
FabrikantnummerR1RW0416DSB-0PI#D0
17,36 €
Each
Aantal stuks
4Mbit 256K x 16 bit 256K 16bit 10ns 16bit 1MHz - - Surface Mount TSOP 44 18.51 x 10.26 x 1mm 1mm
RS-stocknr. 198-7995
FabrikantnummerCY62128EV30LL-45ZAXIT
1,64 €
Each (In a Pack of 5)
Aantal stuks
1024kbit 128K x 8 128K 8bit 45ns - - - - - - - - -
RS-stocknr. 827-2571
FabrikantnummerCY7C1019D-10ZSXI
4,262 €
Each (In a Pack of 5)
Aantal stuks
1Mbit 128k x 8 128K 8bit 10ns 17bit 100MHz Yes Asynchronous Surface Mount TSOP 32 21.08 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 901-5749
FabrikantnummerR1RP0416DGE-2PR#B0
18,84 €
Each
Aantal stuks
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-stocknr. 125-6972
FabrikantnummerCY62128ELL-45ZXI
2,238 €
Each (In a Pack of 5)
Aantal stuks
1Mbit 128K x 16 bit 128K 16bit 45ns 6bit - Yes - Surface Mount TSOP 32 20.751 x 11.43 x 2.895mm 2.895mm
RS-stocknr. 146-8883
Fabrikantnummer47L16-I/SN
FabrikantMicrochip
0,589 €
Each (In a Pack of 10)
Aantal stuks
16kbit 2048K x 8 - 8bit - - 1000kHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS-stocknr. 811-5163
FabrikantnummerIS61C6416AL-12KLI
FabrikantISSI
2,228 €
Each (In a Pack of 4)
Aantal stuks
1Mbit 64k x 16 64k 16bit 12ns 16bit - - - Surface Mount SOJ 44 28.7 x 10.29 x 3.11mm 3.11mm
RS-stocknr. 188-5336
FabrikantnummerCY7C1021DV33-10ZSXI
2,036 €
Each (In a Tray of 135)
Aantal stuks
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. 188-5321
FabrikantnummerCY62136EV30LL-45ZSXI
2,485 €
Each (In a Tray of 135)
Aantal stuks
2Mbit 128k x 16 bit 128k 16bit 45ns 16bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS-stocknr. 823-4447
Fabrikantnummer23K256-E/SN
FabrikantMicrochip
1,014 €
Each (In a Pack of 5)
Aantal stuks
256kbit 32768 x 8 bit 32768 8bit 50ns 16bit 20MHz - Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 1.5mm
Nieuw
RS-stocknr. 200-9831
Fabrikantnummer48LM01-I/SM
FabrikantMicrochip
3,16 €
Each (In a Pack of 3)
Aantal stuks
1Mbit 128k x 8 1, 31, 072 8bit 10ns - - - - - - - - -
RS-stocknr. 125-6980
FabrikantnummerCY62148ESL-55ZAXI
6,10 €
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. 744-4573
FabrikantnummerAS7C34098A-10TCN
FabrikantAlliance Memory
4,63 €
Each
Aantal stuks
4Mbit 256K x 16 bit 256K 16bit 10ns 18bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.26 x 1.05mm 1.05mm
RS-stocknr. 797-9360
FabrikantnummerDS1220AD-200IND+
FabrikantMaxim Integrated
12,29 €
Each
Aantal stuks
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-stocknr. 102-3554
FabrikantnummerM48Z58-70PC1
11,424 €
Each (In a Tube of 12)
Aantal stuks
64kbit 8K x 8 bit 8K 8bit 70ns 13bit 1MHz Yes - Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 8.89mm
RS-stocknr. 181-7613
FabrikantnummerCY7C1061GE30-10ZSXI
29,12 €
Each
Aantal stuks
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. 181-8272
FabrikantnummerCY14E256LA-SZ25XI
15,76 €
Each (In a Tube of 22)
Aantal stuks
256kbit 32K x 8 bit 32K 8bit 25ns - - Yes - Surface Mount SOIC 32 20.87 x 7.59 x 2.29mm 2.29mm
RS-stocknr. 170-2059
FabrikantnummerIS61LV6416-10TL
FabrikantISSI
1,438 €
Each (In a Tray of 135)
Aantal stuks
1Mbit 64K words x 16 bit 64K 16bit 10ns 16bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS-stocknr. 198-7998
FabrikantnummerCY62148EV30LL-45ZSXIT
2,621 €
Each (On a Reel of 1000)
Aantal stuks
4096kbit 512K x 8 512K 8bit 45ns - - - - - - - - -
RS-stocknr. 181-7443
FabrikantnummerCY62148EV30LL-45ZSXI
3,147 €
Each (In a Tray of 117)
Aantal stuks
4Mbit 512K x 8 bit 512K 8bit 45ns 8bit - Yes - Surface Mount TSOP 32 21.08 x 10.29 x 1.05mm 1.05mm
Related Products
The ISSI Static RAM products use high performing ...
Description:
The ISSI Static RAM products use high performing CMOS technology. There is a broad range of static RAMs which include the 5V high-speed asynchronous SRAM, high-speed low power asynchronous SRAM, 5V low power types asynchronous SRAMs, ultra-low power CMOS Static ...
Temperature Ranges:Industrial: –40 °C to 85 °CAutomotive-A: –40 ...
Description:
Temperature Ranges:Industrial: –40 °C to 85 °CAutomotive-A: –40 °C to 85 °CPin and Function Compatible with CY7C1021BHigh SpeedTAA = 10 nsLow Active PowerICC = 80 mA at 10 nsLow CMOS Standby PowerISB2 = 3 mA2.0 V Data RetentionAutomatic Power Down ...
The ISSI Static RAM products use high performing ...
Description:
The ISSI Static RAM products use high performing CMOS technology. There is a broad range of static RAMs which include the 5V high-speed asynchronous SRAM, high-speed low power asynchronous SRAM, 5V low power types asynchronous SRAMs, ultra-low power CMOS Static ...
Temperature Ranges:Industrial: –40 °C to 85 °CAutomotive-A: –40 ...
Description:
Temperature Ranges:Industrial: –40 °C to 85 °CAutomotive-A: –40 °C to 85 °CPin and Function Compatible with CY7C1021BHigh SpeedTAA = 10 nsLow Active PowerICC = 80 mA at 10 nsLow CMOS Standby PowerISB2 = 3 mA2.0 V Data RetentionAutomatic Power Down ...