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 445 รายการ / Viewing 1 - 20 of 445 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
THB40.594
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
THB43.814
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. 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. 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. 170-0895
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS6C4008-55PCN
THB133.475
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
THB147.59
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. 170-2047
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62C256AL-45ULI
Brand :ISSI
THB29.953
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. 391-640
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62C256AL-45ULI
Brand :ISSI
THB46.385
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. 666-8150
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23K640-I/SN
Brand :Microchip
THB18.108
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. 769-7345
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LC1024-I/P
Brand :Microchip
THB67.74
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. 912-2714
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.23LC1024-I/P
Brand :Microchip
THB60.753
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. 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. 125-7527
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1011DV33-10ZSXI
THB129.135
Each: (In a Pack of 2)
Units
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 Stock No. 181-7451
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY7C1061GE30-10ZSXI
THB770.184
Each (In a Tray of 108)
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. 146-0606
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS7C38096A-10TIN
THB511.585
Each (In a Tray of 135)
Units
8Mbit 1M x 8 bit 1M 8bit 10ns 8bit 1MHz Yes Asynchronous Surface Mount TSOP 44 18.618 x 10.363 x 1.05mm 1.05mm
RS Stock No. 802-1951
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.N25S830HAS22I
THB51.985
Each: (In a Pack of 2)
Units
256kbit 32k x 8 bit 32K 8bit 25ns 16bit 20MHz Yes Synchronous Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm
RS Stock No. 145-3848
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.N01S830BAT22I
THB91.124
Each (In a Tube of 100)
Units
1Mbit 128K x 8 bit - 8bit 5ns 24bit 20MHz Yes Synchronous Surface Mount TSSOP 8 4.4 x 3 x 0.9mm 0.9mm
RS Stock No. 170-0898
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS7C34098A-10TCN
THB133.603
Each (In a Tray of 135)
Units
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 Stock No. 744-4549
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AS7C1026B-12TCN
THB89.16
Each
Units
1Mbit 64K x 16 bit 64K 16bit 12ns 16bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.26 x 1.05mm 1.05mm
RS Stock No. 124-2937
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CY62128EV30LL-45ZAXI
THB56.81
Each: (In a Pack of 5)
Units
1Mbit 128K x 8 bit 128K 8bit 45ns 8bit 1MHz Yes - Surface Mount STSOP 32 11.9 x 8.1 x 1.05mm 1.05mm
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