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Quad SRAMs

GSI's SigmaQuad SRAMs are the acknowledged leader in the industry with their combination of capacity and performance. SigmaQuad transaction rates are unequaled by any competitors.

 

SigmaQuad SRAMs are synchronous memories with separate read and write data buses. "Quad" refers to their ability to transfer 4 beats of data (2 beats per data bus) in a single clock cycle. SigmaQuad memories are ideal for applications that alternate between read and write operations frequently, at operating speeds of 250 MHz and above.

 

GSI's SigmaQuad devices are compatible with all competitor Quad Data Rate SRAMs.

 

 

Features

  • Simultaneous Read and Write SigmaQuad Interface 
  • Dual Double Data Rate Interface
  • Pipelined Read operation 
  • Fully coherent Read and Write pipelines
  • ZQ mode pin for programmable output drive strength
  • IEEE 1149.1 JTAG-compliant Boundary Scan 
  • JEDEC-standard pinout and package 
  • RoHS-compliant package available


Name Density Config. Speed (MHz) Burst Length Read Latency (RL) On-Die Termination Package 6/6 RoHS Temp Special Features Status
SigmaQuad-IVe
View 48 products
144Mb x18, x36 Up to 1333 2, 4 5, 6 Weak/Strong/None 260 BGA yes Mil, Ind, Comm See Individual Products Production, Active
SigmaQuad-IIIe
View 174 products
72Mb, 144Mb, 288Mb x18, x36 Up to 833 2, 4 2, 3 Weak/Strong/None 260 BGA yes, no Mil, Ext, Ind, Comm See Individual Products Production, Active, NRND
SigmaQuad-II+
View 1872 products
18Mb, 36Mb, 72Mb, 144Mb, 288Mb x8, x9, x18, x36 Up to 633 2, 4 2, 2.5 n/a, Weak/Strong, Weak/None 165 CLGA, 165 CCGA, 165 BGA yes, no Mil, Ind, Comm See Individual Products Production, Active, NRND
SigmaQuad-II
View 752 products
18Mb, 36Mb, 72Mb, 144Mb, 288Mb x8, x9, x18, x36 Up to 400 2, 4 1.5 n/a 165 BGA yes, no Mil, Ind, Comm See Individual Products Production, NRND, ContactSales
SigmaQuad-I
View 16 products
18Mb x18, x36 Up to 200 2 1.5 n/a 165 BGA yes, no Ind, Comm See Individual Products Production
Part Number Density Configuration Speed (MHz) Burst Length Read Latency On Die Termination Package 6/6 ROHS Temp Special Features Status
GS8673EQ36BK-625S 72Mb x36 625 2 3 Weak/Strong/None 260 BGA no Comm ECCRAM, GSI IP-specific NRND
GS8673EQ36BK-675 72Mb x36 675 2 3, 2 Weak/Strong/None 260 BGA no Comm ECCRAM NRND
GS8673EQ36BK-675I 72Mb x36 675 2 3, 2 Weak/Strong/None 260 BGA no Ind ECCRAM NRND
GS8673EQ36BK-725IS 72Mb x36 725 2 3 Weak/Strong/None 260 BGA no Ind ECCRAM, GSI IP-specific NRND
GS8673EQ36BK-725S 72Mb x36 725 2 3 Weak/Strong/None 260 BGA no Comm ECCRAM, GSI IP-specific NRND
GS81302D18AGD-250 144Mb x18 250 4 1.5 n/a 165 BGA yes Comm none Production
GS81302D18AGD-250I 144Mb x18 250 4 1.5 n/a 165 BGA yes Ind none Production
GS81302D18AGD-300 144Mb x18 300 4 1.5 n/a 165 BGA yes Comm none Production
GS8673EQ36BK-500I 72Mb x36 500 2 3, 2 Weak/Strong/None 260 BGA no Ind ECCRAM NRND
GS8673EQ36BK-550 72Mb x36 550 2 3, 2 Weak/Strong/None 260 BGA no Comm ECCRAM NRND
GS8673EQ36BK-550I 72Mb x36 550 2 3, 2 Weak/Strong/None 260 BGA no Ind ECCRAM NRND
GS8673EQ36BK-550IS 72Mb x36 550 2 3 Weak/Strong/None 260 BGA no Ind ECCRAM, GSI IP-specific NRND
GS8673EQ36BK-550S 72Mb x36 550 2 3 Weak/Strong/None 260 BGA no Comm ECCRAM, GSI IP-specific NRND
GS8673EQ36BK-625 72Mb x36 625 2 3, 2 Weak/Strong/None 260 BGA no Comm ECCRAM NRND
GS8673EQ36BK-625I 72Mb x36 625 2 3, 2 Weak/Strong/None 260 BGA no Ind ECCRAM NRND
GS8673EQ36BK-625IS 72Mb x36 625 2 3 Weak/Strong/None 260 BGA no Ind ECCRAM, GSI IP-specific NRND
GS8673EQ36BGK-625 72Mb x36 625 2 3, 2 Weak/Strong/None 260 BGA yes Comm ECCRAM Production
GS8673EQ36BGK-625I 72Mb x36 625 2 3, 2 Weak/Strong/None 260 BGA yes Ind ECCRAM Production
GS8673EQ36BGK-625IS 72Mb x36 625 2 3 Weak/Strong/None 260 BGA yes Ind ECCRAM, GSI IP-specific Production
GS8673EQ36BGK-625S 72Mb x36 625 2 3 Weak/Strong/None 260 BGA yes Comm ECCRAM, GSI IP-specific Production
GS8673EQ36BGK-675 72Mb x36 675 2 3, 2 Weak/Strong/None 260 BGA yes Comm ECCRAM Production
GS8673EQ36BGK-675I 72Mb x36 675 2 3, 2 Weak/Strong/None 260 BGA yes Ind ECCRAM Production
GS8673EQ36BGK-725IS 72Mb x36 725 2 3 Weak/Strong/None 260 BGA yes Ind ECCRAM, GSI IP-specific Production
GS8673EQ36BGK-725S 72Mb x36 725 2 3 Weak/Strong/None 260 BGA yes Comm ECCRAM, GSI IP-specific Production
GS8673EQ36BK-500 72Mb x36 500 2 3, 2 Weak/Strong/None 260 BGA no Comm ECCRAM NRND

Features

  • Simultaneous Read and Write SigmaQuad Interface 
  • Dual Double Data Rate Interface
  • Pipelined Read operation 
  • Fully coherent Read and Write pipelines
  • ZQ mode pin for programmable output drive strength
  • IEEE 1149.1 JTAG-compliant Boundary Scan 
  • JEDEC-standard pinout and package 
  • RoHS-compliant package available