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

  • 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

Applications

  • Computers
  • Workstations
  • Routers
  • LCD screens and printers
  • Electronics
  • Microprocessors

...
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제품설명 단가 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 제품 번호 538-148
제조사 부품 번호AS6C62256-55PCN
제조사Alliance Memory
₩5,775.30
Each (In a Pack of 2)
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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 제품 번호 170-0736
제조사 부품 번호AS6C62256-55PCN
제조사Alliance Memory
₩5,330.45
Each (In a Tube of 15)
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256kbit 32k x 8 bit 32k 8bit 55ns 15bit - Yes Asynchronous Through Hole PDIP 28 36.32 x 13.21 x 3.81mm 3.81mm
RS 제품 번호 912-6849
제조사 부품 번호23LCV1024-I/SN
제조사Microchip
₩4,006.75
Each (In a Tube of 100)
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1Mbit 128k x 8 bit 128k 8bit 5ns 24bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS 제품 번호 803-2181
제조사 부품 번호23LCV1024-I/SN
제조사Microchip
₩4,006.75
Each (In a Pack of 5)
수량
1Mbit 128k x 8 bit 128k 8bit 5ns 24bit 20MHz Yes - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 1.25mm
RS 제품 번호 810-3576
제조사 부품 번호M48Z58-70PC1
₩25,840.05
Each
수량
64kbit 8k x 8 bit 8k 8bit 70ns 13bit 1MHz Yes - Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 8.89mm
RS 제품 번호 102-3554
제조사 부품 번호M48Z58-70PC1
₩23,945.95
Each (In a Tube of 12)
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64kbit 8k x 8 bit 8k 8bit 70ns 13bit 1MHz Yes - Through Hole PCDIP 28 39.88 x 18.34 x 8.89mm 8.89mm
RS 제품 번호 170-0895
제조사 부품 번호AS6C4008-55PCN
제조사Alliance Memory
₩8,920.25
Each (In a Tube of 13)
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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 제품 번호 125-7535
제조사 부품 번호CY7C1051DV33-10ZSXI
₩53,433.15
Each
수량
8Mbit 512K x 16 bit 512k 16bit 10ns 16bit - Yes - Surface Mount TSOP 44 18.517 x 10.262 x 1.044mm 1.044mm
RS 제품 번호 744-4561
제조사 부품 번호AS6C4008-55PCN
제조사Alliance Memory
₩9,766.55
Each
수량
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 제품 번호 178-4043
제조사 부품 번호23LC512-I/SN
제조사Microchip
₩2,552.85
Each (In a Tube of 100)
수량
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 제품 번호 170-2052
제조사 부품 번호IS61LV5128AL-10TLI
제조사ISSI
₩6,063.60
Each (In a Tray of 135)
수량
4Mbit 512k x 8 bit 512k 8bit 10ns 19bit - Yes Asynchronous Surface Mount TSOP 44 18.52 x 10.29 x 1.05mm 1.05mm
RS 제품 번호 811-5175
제조사 부품 번호IS61WV102416BLL-10TLI
제조사ISSI
₩37,263.55
Each
수량
16Mbit 1M x 16 bit 1M 16bit 10ns 20bit - Yes Asynchronous Surface Mount TSOP 48 18.6 x 12.2 x 1.05mm 1.05mm
RS 제품 번호 769-7342
제조사 부품 번호23LC1024-I/SN
제조사Microchip
₩3,506.10
Each (In a Pack of 2)
수량
1Mbit 128K words x 8 bit 128k 8bit 5ns 24bit 20MHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 1.5mm
RS 제품 번호 889-5538
제조사 부품 번호23LC1024-I/SN
제조사Microchip
₩3,574.30
Each (In a Tube of 100)
수량
1Mbit 128k x 8 bit 128k 8bit 5ns 24bit 20MHz Yes Synchronous Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 1.5mm
RS 제품 번호 798-5208
제조사 부품 번호23LC512-I/SN
제조사Microchip
₩2,503.25
Each (In a Pack of 5)
수량
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 제품 번호 170-0738
제조사 부품 번호AS6C4008-55SIN
제조사Alliance Memory
₩7,621.35
Each (In a Tube of 22)
수량
4Mbit 512k x 8 bit 512k 8bit 55ns 19bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.3 x 2.82mm 2.82mm
RS 제품 번호 391-696
제조사 부품 번호IS61LV5128AL-10TLI
제조사ISSI
₩7,255.55
Each
수량
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 제품 번호 538-186
제조사 부품 번호AS6C6264-55SIN
제조사Alliance Memory
₩5,257.60
Each (In a Pack of 2)
수량
64kbit 8K words x 8 bit 8k 8bit 55ns 13bit - Yes Asynchronous Surface Mount SOP 28 18.49 x 8.64 x 2.49mm 2.49mm
RS 제품 번호 170-2180
제조사 부품 번호IS61WV102416BLL-10TLI
제조사ISSI
₩33,492.40
Each (In a Tray of 96)
수량
16Mbit 1M x 16 bit 1M 16bit 10ns 20bit - Yes Asynchronous Surface Mount TSOP 48 18.6 x 12.2 x 1.05mm 1.05mm
RS 제품 번호 538-160
제조사 부품 번호AS6C4008-55SIN
제조사Alliance Memory
₩8,492.45
Each
수량
4Mbit 512K words x 8 bit 512k 8bit 55ns 19bit - Yes Asynchronous Surface Mount SOP 32 20.75 x 11.3 x 2.82mm 2.82mm