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

1 - 20 van 484 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. 538-148
FabrikantnummerAS6C62256-55PCN
FabrikantAlliance Memory
€ 2,20
Each (In a Pack of 2)
Aantal stuks
256kbit 32K words x 8 bit 32K 8bit 55ns 15bit - Yes Asynchronous Through Hole PDIP 28 36.32 x 13.21 x 3.81mm 3.81mm
RS-stocknr. 170-0736
FabrikantnummerAS6C62256-55PCN
FabrikantAlliance Memory
€ 1,97
Each (In a Tube of 15)
Aantal stuks
256kbit 32K words x 8 bit 32K 8bit 55ns 15bit - Yes Asynchronous Through Hole PDIP 28 36.32 x 13.21 x 3.81mm 3.81mm
RS-stocknr. 538-142
FabrikantnummerAS6C62256-55SIN
FabrikantAlliance Memory
€ 1,745
Each (In a Pack of 2)
Aantal stuks
256kbit 32K words x 8 bit 32K 8bit 55ns 15bit - Yes Asynchronous Surface Mount SOP 28 18.49 x 8.64 x 2.49mm 2.49mm
RS-stocknr. 170-0735
FabrikantnummerAS6C62256-55SIN
FabrikantAlliance Memory
€ 1,551
Each (In a Tube of 25)
Aantal stuks
256kbit 32K words x 8 bit 32K 8bit 55ns 15bit - Yes Asynchronous Surface Mount SOP 28 18.49 x 8.64 x 2.49mm 2.49mm
RS-stocknr. 538-154
FabrikantnummerAS6C8008-55ZIN
FabrikantAlliance Memory
€ 5,97
Each
Aantal stuks
8Mbit 1024K words x 8 bit 1M 8bit 55ns 20bit - Yes Asynchronous Surface Mount TSOP 44 18.42 x 10.16 x 1mm 1mm
RS-stocknr. 170-0737
FabrikantnummerAS6C8008-55ZIN
FabrikantAlliance Memory
€ 5,095
Each (In a Tray of 135)
Aantal stuks
8Mbit 1024K words x 8 bit 1M 8bit 55ns 20bit - Yes Asynchronous Surface Mount TSOP 44 18.42 x 10.16 x 1mm 1mm
RS-stocknr. 170-0895
FabrikantnummerAS6C4008-55PCN
FabrikantAlliance Memory
€ 3,94
Each (In a Tube of 13)
Aantal stuks
4Mbit 512K x 8 bit 512K 8bit 55ns 19bit - Yes Asynchronous Through Hole PDIP 32 41.91 x 13.818 x 3.81mm 3.81mm
RS-stocknr. 177-5513
FabrikantnummerAS6C6264-55PCN
FabrikantAlliance Memory
€ 2,061
Each (In a Tube of 15)
Aantal stuks
64kbit 8K words x 8 bit 8K 8bit 55ns 13bit - Yes Asynchronous Through Hole PDIP 28 36.32 x 13.21 x 3.81mm 3.81mm
RS-stocknr. 538-158
FabrikantnummerAS6C6264-55PCN
FabrikantAlliance Memory
€ 2,30
Each (In a Pack of 2)
Aantal stuks
64kbit 8K words x 8 bit 8K 8bit 55ns 13bit - Yes Asynchronous Through Hole PDIP 28 36.32 x 13.21 x 3.81mm 3.81mm
RS-stocknr. 744-4561
FabrikantnummerAS6C4008-55PCN
FabrikantAlliance Memory
€ 4,35
Each
Aantal stuks
4Mbit 512K x 8 bit 512K 8bit 55ns 19bit - Yes Asynchronous Through Hole PDIP 32 41.91 x 13.818 x 3.81mm 3.81mm
RS-stocknr. 901-5758
FabrikantnummerR1RP0416DSB-2LR#D0
€ 18,22
Each
Aantal stuks
4Mbit 256K x 16 bit 256K 16bit 12ns 16bit 1MHz - - Surface Mount TSOP 44 18.51 x 10.26 x 1mm 1mm
RS-stocknr. 170-2047
FabrikantnummerIS62C256AL-45ULI
FabrikantISSI
€ 0,971
Each (In a Tray of 120)
Aantal stuks
256kbit 32K words x 8 bit 32K 8bit 45ns 15bit - Yes Asynchronous Surface Mount SOP 28 18.24 x 8.53 x 2.84mm 2.84mm
RS-stocknr. 391-640
FabrikantnummerIS62C256AL-45ULI
FabrikantISSI
€ 1,31
Each (In a Pack of 4)
Aantal stuks
256kbit 32K words x 8 bit 32K 8bit 45ns 15bit - Yes Asynchronous Surface Mount SOP 28 18.24 x 8.53 x 2.84mm 2.84mm
RS-stocknr. 714-4788
FabrikantnummerIDT7133LA25JGI
FabrikantIDT
€ 22,43
Each
Aantal stuks
32kbit 2K x 16 bit 2K 16bit 25ns 16bit - Yes Asynchronous Surface Mount PLCC 68 24 x 24 x 3.63mm 3.63mm
RS-stocknr. 170-2070
FabrikantnummerIDT7133LA25JGI
FabrikantIDT
€ 18,091
Each (In a Tube of 18)
Aantal stuks
32kbit 2K x 16 bit 2K 16bit 25ns 16bit - Yes Asynchronous Surface Mount PLCC 68 24 x 24 x 3.63mm 3.63mm
RS-stocknr. 178-4043
Fabrikantnummer23LC512-I/SN
FabrikantMicrochip
€ 1,171
Each (In a Tube of 100)
Aantal stuks
512kbit 64K x 8 bit 64K 8bit 5ns 8bit 20MHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 1.5mm
RS-stocknr. 170-0888
FabrikantnummerU62256AS2C07LLG1
FabrikantAlliance Memory
€ 3,296
Each (In a Tube of 25)
Aantal stuks
256kbit 32K x 8 bit 32K 8bit 56ns 15bit - Yes Asynchronous Surface Mount SOP 28 18.49 x 8.64 x 2.49mm 2.49mm
RS-stocknr. 171-0973
FabrikantnummerCY62138FV30LL-45ZAXI
€ 3,066
Each (In a Tray of 468)
Aantal stuks
2Mbit 256K x 8 bit 256K 8bit 45ns 8bit - Yes - Surface Mount STSOP 32 11.9 x 8.1 x 1.05mm 1.05mm
RS-stocknr. 769-7345
Fabrikantnummer23LC1024-I/P
FabrikantMicrochip
€ 1,855
Each (In a Pack of 2)
Aantal stuks
1Mbit 128K words x 8 bit 128Kk 8bit 5ns 24bit 20MHz Yes Synchronous Through Hole PDIP 8 0.4 x 0.28 x 0.195in 4.95mm
RS-stocknr. 769-7342
Fabrikantnummer23LC1024-I/SN
FabrikantMicrochip
€ 1,775
Each (In a Pack of 2)
Aantal stuks
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
Related Products
Pin- and function-compatible with CY7C109B/CY7C1009BHigh speedTAA = 10 ...
Description:
Pin- and function-compatible with CY7C109B/CY7C1009BHigh speedTAA = 10 nsLow active powerICC = 80 mA at 10 nsLow CMOS standby powerISB2 = 3 mA2.0 V Data RetentionAutomatic power-down when deselectedTTL-compatible inputs and outputsEasy memory expansion with CE1, CE2 and OE optionsCY7C109D ...
The R1LP Series of advanced low voltage static ...
Description:
The R1LP Series of advanced low voltage static RAMs is suitable for memory applications where a simple interfacing, battery operating and battery backup are the important design objectives. Single 4.5V to 5.5V power supplySmall stand-by currentNo clocks, No refresh requiredAll ...
CY7C1061G and CY7C1061GE are high-performance CMOS fast static ...
Description:
CY7C1061G and CY7C1061GE are high-performance CMOS fast static RAM devices with embedded ECC. Both devices are offered in single and dual chip enable options and in multiple pin configurations. The CY7C1061GE device includes an ERR pin that signals a single-bit ...
The MoBL low-power SRAM memory devices have high ...
Description:
The MoBL low-power SRAM memory devices have high efficiency and offer industry leading standby power dissipation (maximum) specifications. Very high speed: 45 nsVoltage range: 4.5 V to 5.5 VPin compatible with CY62148BUltra low standby powerTypical standby current: 1 μAMaximum standby ...