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high speed SRAM

Advanced memory for high performance network applications

SAMSUNG, Cypress, NEC, Renesas and IDT have jointly defined and developed Quad Data Rate (QDR™) SRAM technology for high-performance Network applications.

Developed with some of the industry's top system architects, our new QDRII and DDRII architectures are the latest additions to the co-development team's QDR/DDR family of high-performance networking and communication SRAM products. This co-development partnership enables customers the option of choosing from multiple sources for the new SRAMs. Each partner is providing system expertise and product direction that will give customers the benefit of a broad range of market experience and innovative technology.

SAMSUNG's QDRII are available now in volume production, in densities ranging from 18Mb to 72Mb.

High Speed SRAM SAMSUNG always give you the best memory solutions

SAMSUNG, the world leader in SRAM, has the broadest product offering in the industry.
When you need SRAMs, turn to SAMSUNG, a trusted supplier committed to your success.

Product SB SPB NtRAM LW DDR I DDR II QDR I QDR II
FT PP 2B 4B 2B 2B 4B 2B 4B
Max Freq. 133MHz 250MHz 133MHz 250MHz 300MHz 400MHz 300MHz 300MHz 300MHz 167MHz 167MHz 250MHz 300MHz
I/O Common Common Common Common Common Common Common Common Separate Separate Separate Separate Separate
Input CLK K K K K K,K# K,K# K,K# K,K# K,K# K,K# K,K# K,K# K,K#
Output CLK
(C,C#)		 · · · · · · ∨ ∨ ∨ ∨ ∨ ∨ ∨
Echo CLK (CQ, CQ#) · · · · ∨ ∨ ∨ ∨ ∨ ∨ ∨ ∨ ∨
Interface LVTTL LVTTL LVTTL LVTTL HSTL HSTL HSTL HSTL HSTL HSTL HSTL HSTL HSTL
Data Rate SDR SDR SDR SDR SDR DDR DDR DDR DDR DDR DDR DDR DDR
Write type Standard Standard 1Late 2Late 1Late 1Late 1Late 1Late 1Late Early 1Late Early 1Late
Read Latency 0Pipe 1Pipe 0Pipe 1Pipe 1Pipe 1Pipe 1.5Pipe 1.5Pipe 1.5Pipe 1Pipe 1Pipe 1.5Pipe 1.5Pipe
Burst Order Optional Optional Optional Optional Optional Optional Fixed Fixed Fixed Fixed Fixed Fixed Fixed
Byte Write ∨ ∨ ∨ ∨ ∨ · ∨ ∨ ∨ ∨ ∨ ∨ ∨
ZQ · · · · ∨ ∨ ∨ ∨ ∨ ∨ ∨ ∨ ∨
DLL · · · · · · ∨ ∨ ∨ ∨ ∨ ∨ ∨
Control ADV#,
ADSP#,
ADSC#,
OE#,CS#
ZZ,GW#
BW#,
LBO# 		ADV#,
ADSP#,
ADSC#,
OE#,CS#
ZZ,GW#
BW#,
LBO# 		ADV,
WE#
OE#,
CS#,
ZZ,
LBO# 		ADV,
WE#
OE#,
CS#,
ZZ,
LBO# 		SW#
SWx#,
ZZ,
G,
SS# 		B1,
B2,
B3,
G,
LBO# 		LD#,
R/W# 		LD#,
R/W# 		LD#,
R/W# 		R#,W# R#,W# R#,W# R#,W#
PKG 100TQFP 100TQFP 100TQFP
165FBGA 		100TQFP
165FBGA 		119BGA 153BGA 165FBGA 165FBGA 165FBGA 165FBGA 165FBGA 165FBGA 165FBGA
Networking application

Network servers and equipment need blazing fast, efficient buffers. Our QDR/DDR family and NtRAM synchronous SRAMs offer optimized performance for switches, hubs, routers, and network servers.

Category Mode Density
sync SRAM QDR I / II / II+ 72Mbit 36Mbit 18Mbit    
DDR II / II+(CIO / SIO) 72Mbit 36Mbit 18Mbit    
SB & SPB 32Mbit 16Mbit 8Mbit 4Mbit 2Mbit
NtRAM (FT & PP) 64Mbit 32Mbit 16Mbit 8Mbit 4Mbit
DLW 16Mbit        
async fast SRAM async fast SRAM 4Mbit "3Mbit
(x32)"		 1Mbit    
Server application

Data servers are shaped by their L3 caches. The faster the cache - the better the server. SAMSUNG's DDR family and Late Write SRAMs are the fastest in the industry enabling peak performance for computing applications.

Category Mode Density
sync SRAM late write(R-R, R-L) 32Mbit 16Mbit 8Mbit 4Mbit
DDR 32Mbit 16Mbit 8Mbit