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 466 รายการ / Viewing 1 - 20 of 466 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. 178-4043
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LC512-I/SN
Brand :Microchip
THB44.829
Each (In a Tube of 100)
Units
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 Stock No. 798-5208
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LC512-I/SN
Brand :Microchip
THB48.378
Each: (In a Pack of 5)
Units
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 Stock No. 178-4054
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LCV512-I/SN
Brand :Microchip
THB50.633
Each (In a Tube of 100)
Units
512kbit 64K x 8 bit - - 5ns 16bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS Stock No. 803-2197
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LCV512-I/SN
Brand :Microchip
THB53.95
Each: (In a Pack of 5)
Units
512kbit 64K x 8 bit - 8bit 5ns 16bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS Stock No. 170-0895
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS6C4008-55PCN
THB140.02
Each (In a Tube of 13)
Units
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 Stock No. 744-4561
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS6C4008-55PCN
THB157.52
Each
Units
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 Stock No. 391-640
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62C256AL-45ULI
Brand :ISSI
THB53.743
Each: (In a Pack of 4)
Units
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 Stock No. 170-2047
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62C256AL-45ULI
Brand :ISSI
THB50.46
Each (In a Tray of 120)
Units
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 Stock No. 912-2714
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LC1024-I/P
Brand :Microchip
THB66.05
Each (In a Tube of 60)
Units
1Mbit 128K words x 8 bit 128K 8bit 5ns 24bit 20MHz Yes Synchronous Through Hole PDIP 8 10.16 x 7.11 x 4.95mm 4.95mm
RS Stock No. 769-7345
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LC1024-I/P
Brand :Microchip
THB68.44
Each: (In a Pack of 2)
Units
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 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
RS Stock No. 666-8150
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23K640-I/SN
Brand :Microchip
THB19.992
Each: (In a Pack of 5)
Units
64kbit 8192 words x 8 bit 8K 8bit 25ns 16bit 20MHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS Stock No. 178-4005
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23K640-I/SN
Brand :Microchip
THB18.10
Each (In a Tube of 100)
Units
64kbit 8192 words x 8 bit 8K 8bit 25ns 16bit 20MHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS Stock No. 538-261
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS7C3256A-12TIN
THB66.07
Each: (In a Pack of 2)
Units
256kbit 32K words x 8 bit 32K 8bit 12ns 15bit - Yes Asynchronous Surface Mount TSOP 28 8 x 11.8 x 1.05mm 1.05mm
RS Stock No. 538-271
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS6C8016-55ZIN
THB222.14
Each
Units
8Mbit 512K words x 16 bit 512K 16bit 55ns 19bit - Yes Asynchronous Surface Mount TSOP 44 18.42 x 10.16 x 1mm 1mm
RS Stock No. 170-0923
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS7C38098A-10TIN
THB646.047
Each (In a Tray of 135)
Units
8Mbit 512K x 16 bit 512K 16bit 10ns 16bit 1MHz Yes Asynchronous Surface Mount TSOP 44 18.618 x 10.363 x 1.05mm 1.05mm
RS Stock No. 170-0924
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS7C38098A-10BIN
THB643.954
Each (In a Tray of 480)
Units
8Mbit 512K x 16 bit 512K 16bit 10ns 16bit 1MHz Yes Asynchronous Surface Mount TFBGA 48 6.05 x 8.05 x 1.05mm 1.05mm
ใหม่ / New
RS Stock No. 200-9836
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.48L256-I/SN
Brand :Microchip
THB61.306
Each: (In a Pack of 5)
Units
256kbit 32 k x 8 32, 768 8bit 10ns - - - - - - - - -
RS Stock No. 182-3296
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1049GN30-10VXI
THB145.136
Each (In a Tube of 19)
Units
4Mbit 512K x 16 bit 512K 8bit 10ns - 100MHz - Asynchronous Surface Mount SOJ 36 0.93 x 0.4 x 0.12mm 0.12mm
RS Stock No. 170-2073
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IDT70V28L20PFGI
Brand :IDT
THB2,346.022
Each (In a Tray of 6)
Units
1024kbit 64K x 16 bit 64K 16bit 20ns 16bit - Yes Asynchronous Surface Mount TQFP 100 14 x 14 x 1.4mm 1.4mm
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