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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กำลังดูสินค้า 1 - 20 รายการจาก 207 รายการ / Viewing 1 - 20 of 207 products
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รายละเอียดสินค้า / Description ราคา / 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. 125-7541
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C199CNL-15VXI
THB85.52
Each: (In a Pack of 5)
Units
256kbit 32K x 8 bit 32K 8bit 15ns 8bit - Yes - Surface Mount SOJ 28 18.03 x 7.62 x 0.254mm 0.254mm
ใหม่ / New
RS Stock No. 193-8456
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY621472E30LL-45ZSXI
THB144.809
Each (In a Tray of 135)
Units
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 Stock No. 188-5316
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62126EV30LL-45ZSXI
THB81.926
Each (In a Tray of 135)
Units
1Mbit 128k x 8 bit 128k 8bit 45ns 16bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 920-1050
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY14B101LA-ZS25XI
THB768.174
Each (In a Tray of 135)
Units
1Mbit 128K x 8 128K 8bit 25ns 17bit 1MHz - - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS Stock No. 181-7443
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62148EV30LL-45ZSXI
THB112.57
Each (In a Tray of 117)
Units
4Mbit 512K x 8 bit 512K 8bit 45ns 8bit - Yes - Surface Mount TSOP 32 21.08 x 10.29 x 1.05mm 1.05mm
RS Stock No. 188-5340
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C199D-10VXI
THB59.15
Each (In a Tube of 27)
Units
256kbit 32k x 8 bit 32k 8bit 10ns 8bit 100MHz - - Surface Mount TSOP 28 11.9 x 8.1 x 1.15mm 1.15mm
RS Stock No. 124-2947
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62167EV30LL-45BVXI
THB264.47
Each
Units
16Mbit 1M x 16 bit, 2M x 8 bit 1M, 2M 8 bit, 16 bit 45ns 8 bit, 16 bit 1MHz Yes - Surface Mount VFBGA 48 6 x 8 x 0.79mm 0.79mm
ใหม่ / New
RS Stock No. 193-8468
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1049G30-10VXI
THB168.035
Each: (In a Pack of 2)
Units
4Mbit 512 k x 8 bit 512 k 8bit 10ns 8bit 100MHz - Asynchronous Through Hole SOJ 36 0.92 x 0.395 x 0.103in 2.62mm
RS Stock No. 171-0964
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY14B256LA-SZ45XI
THB467.14
Each (In a Tube of 44)
Units
256kbit 32K x 8 bit 32K 8bit 45ns 8bit - - - Surface Mount SOIC 32 20.878 x 7.594 x 2.286mm 2.286mm
RS Stock No. 181-7448
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1041GN-10ZSXI
THB125.144
Each (In a Tray of 135)
Units
4Mbit 256K x 16 bit 256K 16bit 10ns - - - Asynchronous Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 171-0973
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62138FV30LL-45ZAXI
THB111.497
Each (In a Tray of 468)
Units
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 Stock No. 188-5328
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62158ELL-45ZSXI
THB323.778
Each (In a Tray of 135)
Units
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
ใหม่ / New
RS Stock No. 193-8457
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY621472E30LL-45ZSXI
THB144.81
Each: (In a Pack of 2)
Units
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
ใหม่ / New
RS Stock No. 193-8463
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1021D-10VXIT
THB148.60
Each: (In a Pack of 5)
Units
1Mbit 64 k x 16 bit 64 k 16bit 10ns 16bit 1MHz - Asynchronous Through Hole SOJ 85 1.12 x 0.395 x 0.095in 2.41mm
RS Stock No. 124-2949
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1021D-10ZSXI
THB96.67
Each: (In a Pack of 2)
Units
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
RS Stock No. 182-3394
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1049GN30-10VXI
THB158.68
Each: (In a Pack of 2)
Units
- - - - - - - - - - - - - -
RS Stock No. 124-2946
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62158EV30LL-45ZSXI
THB239.45
Each
Units
8Mbit 1024K x 8 bit 1024K 8bit 45ns 8bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 188-5302
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY14B101LA-ZS25XI
THB516.43
Each (In a Tray of 135)
Units
1Mbit 128k x 8 bit 128k 8bit 25ns 8bit 1MHz Yes - Surface Mount TSOP 44 18.51 x 10.26 x 1.04mm 1.04mm
RS Stock No. 181-7613
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1061GE30-10ZSXI
THB835.66
Each
Units
16Mbit 1M x 16 bit 1M 16bit 10ns - - - Asynchronous Surface Mount TSOP 54 22.51 x 10.26 x 1.05mm 1.05mm
RS Stock No. 181-7619
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1062G30-10BGXI
THB1,591.01
Each
Units
16Mbit 512K x 32 bit 512K 32bit 10ns - - - Asynchronous Surface Mount PBGA 119 22 x 14 x 1.8mm 1.8mm