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 58 รายการ / Viewing 1 - 20 of 58 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. 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. 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. 170-2059
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61LV6416-10TL
Brand :ISSI
THB81.798
Each (In a Tray of 135)
Units
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 Stock No. 170-2184
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61WV25616BLL-10BLI
Brand :ISSI
THB150.09
Each (In a Tray of 480)
Units
4Mbit 256k x 16 256k 16bit 10ns 18bit - - Asynchronous Surface Mount TFBGA 48 8.1 x 6.1 x 0.9mm 0.9mm
RS Stock No. 391-719
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61C256AL-12JLI
Brand :ISSI
THB35.645
Each: (In a Pack of 4)
Units
256kbit 32K words x 8 bit 32K 8bit 12ns 15bit - Yes Asynchronous Surface Mount SOJ 28 18.54 x 7.75 x 2.67mm 2.67mm
RS Stock No. 170-2052
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61LV5128AL-10TLI
Brand :ISSI
THB177.313
Each (In a Tray of 135)
Units
4Mbit 512K words x 8 bit 512K 8bit 10ns 19bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS Stock No. 170-2193
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62WV51216BLL-55TLI
Brand :ISSI
THB211.607
Each (In a Tray of 135)
Units
8Mbit 512k x 16 512k 16bit 55ns 19bit - Yes - Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS Stock No. 391-630
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62WV12816BLL-55TLI
Brand :ISSI
THB52.26
Each: (In a Pack of 2)
Units
2Mbit 128K words x 16 bit 128K 16bit 55ns 17bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS Stock No. 170-2049
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62C1024AL-35QLI
Brand :ISSI
THB81.869
Each (In a Tray of 84)
Units
1Mbit 128K words x 8 bit 128K 8bit 35ns 17bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.43 x 3mm 3mm
RS Stock No. 391-634
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62WV1288BLL-55HLI
Brand :ISSI
THB49.29
Each: (In a Pack of 2)
Units
1Mbit 128K words x 8 bit 128K 8bit 55ns 17bit - Yes Asynchronous Surface Mount STSOP 32 8.1 x 11.9 x 1.05mm 1.05mm
RS Stock No. 811-5185
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61WV25616EDBLL-10TLI
Brand :ISSI
THB164.755
Each: (In a Pack of 2)
Units
4Mbit 256k x 16 256k 16bit 10ns 18bit - Yes Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS Stock No. 170-2188
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62WV1288BLL-55TLI
Brand :ISSI
THB73.013
Each (In a Tray of 156)
Units
1Mbit 128k x 8 128k 8bit 55ns 17bit - Yes - Surface Mount TSOP 32 18.5 x 8.1 x 0.95mm 0.95mm
RS Stock No. 811-5175
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61WV102416BLL-10TLI
Brand :ISSI
THB671.62
Each
Units
16Mbit 1M x 16 1M 16bit 10ns 20bit - Yes Asynchronous Surface Mount TSOP 48 18.6 x 12.2 x 1.05mm 1.05mm
RS Stock No. 811-5163
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61C6416AL-12KLI
Brand :ISSI
THB97.903
Each: (In a Pack of 4)
Units
1Mbit 64k x 16 64k 16bit 12ns 16bit - - - Surface Mount SOJ 44 28.7 x 10.29 x 3.11mm 3.11mm
RS Stock No. 391-731
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61C1024AL-12JLI
Brand :ISSI
THB101.79
Each: (In a Pack of 2)
Units
1Mbit 128K words x 8 bit 128K 8bit 12ns 17bit - Yes Asynchronous Surface Mount SOJ 32 21.08 x 7.75 x 2.67mm 2.67mm
RS Stock No. 170-2180
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61WV102416BLL-10TLI
Brand :ISSI
THB603.56
Each (In a Tray of 96)
Units
16Mbit 1M x 16 1M 16bit 10ns 20bit - Yes Asynchronous Surface Mount TSOP 48 18.6 x 12.2 x 1.05mm 1.05mm
RS Stock No. 811-5223
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62WV51216BLL-55TLI
Brand :ISSI
THB215.60
Each
Units
8Mbit 512k x 16 512k 16bit 55ns 19bit - Yes - Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS Stock No. 391-729
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS62C1024AL-35TLI
Brand :ISSI
THB94.085
Each: (In a Pack of 2)
Units
1Mbit 128K words x 8 bit 128K 8bit 35ns 17bit - Yes Asynchronous Surface Mount TSOP 32 8.1 x 18.5 x 0.95mm 0.95mm
RS Stock No. 811-5194
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61WV5128BLL-10TLI
Brand :ISSI
THB116.39
Each: (In a Pack of 2)
Units
4Mbit 512k x 8 512k 8bit 10ns 19bit - - Asynchronous Surface Mount TSOP 44 18.54 x 10.29 x 1.05mm 1.05mm
RS Stock No. 811-5157
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.IS61C25616AL-10TLI
Brand :ISSI
THB134.32
Each: (In a Pack of 2)
Units
4Mbit 256k x 16 256k 16bit 10ns 18bit - - - Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm