SDRAM

SDRAM, unlike regular DRAM, operates while syncing with the CPU clock. This syncing means the RAM waits for the clock signal before it will respond to data input. Unlike regular DRAM that will respond immediately to input data, SDRAM has a pipelining function allowing the CPU to process multiple tasks in parallel. RS Components offers a range of SDRAM products that vary in memory size from 16Mbit to 2Gbit.

What is the difference between RAM, DRAM, and SDRAM?

RAM or, Random Access Memory, is in almost all computing-capable devices, including handheld devices like smartphones, tablets, and games consoles, as well as laptops, desktop computers, televisions and so much more. RAM enables these devices to process tasks, manage information and solve problems. Aside from memory size, access time and data rates are key to having the most efficient and high-performing device possible. These two factors are what allow CPUs to access the system RAM and engage processes and solve problems. Shorter access times provide faster access, building more efficient working environments.

Data rates, measured in Megahertz (MHz), varies across types and sizes of RAM and combined with bus widths and access time, data rates play a large part in processing. The data rate is quite simply the speed at which data can be fed into and out of systems. This means time taken to feed a process into the RAM and then transfer the results of the process undertaken back to the computer or device using it. Higher MHz values on RAM provide faster transfer times allowing systems to both feed and receive information faster.

DRAM, or Dynamic Random Access Memory, is a type of RAM used for short-term data storage and uses one transistor to store data on one capacitor, but the data is lost once the capacitor loses its charge unless it is periodically recharged. This recharging is where the 'dynamic' is taken from. DRAM sends instructions to the processor as soon as it receives them, in contrast to SDRAM, or Synchronous Dynamic Random Access Memory, which is synchronised to the computer's clock. The difference this creates is that instructions join a pipeline of instructions to be processed, allowing for more commands to be received rather than waiting for one process to finish before allowing another to be received. This allows SDRAM to operate at much higher speeds than other forms of RAM.


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Description Price Memory Size Organisation SDRAM Class Data Rate Data Bus Width Address Bus Width Number of Bits per Word Maximum Random Access Time Number of Words Package Type Pin Count Dimensions Height Length
RS Stock No. 188-2577
Mfr. Part No.W949D2DBJX5I
BrandWinbond
kr 22,322
Each (In a Tray of 240)
Units
512Mbit 64M x 8 bit - 200MHz 32bit - 8bit - 64M VFBGA 90 13.1 x 8.1 x 0.65mm 0.65mm 13.1mm
RS Stock No. 188-2569
Mfr. Part No.W631GG6MB12I
BrandWinbond
kr 37,785
Each (In a Tray of 198)
Units
1Gbit 128M x 8 bit - 800MHz - - 8bit - 128M VFBGA 96 13.1 x 7.6 x 0.6mm 0.6mm 13.1mm
RS Stock No. 188-2578
Mfr. Part No.W949D6DBHX5I
BrandWinbond
kr 32,457
Each (In a Tray of 312)
Units
512Mbit 64M x 8 bit - 200MHz 16bit - 8bit - 64M VFBGA 60 9.1 x 8.1 x 0.65mm 0.65mm 9.1mm
RS Stock No. 188-2844
Mfr. Part No.W9812G6KH-5I
BrandWinbond
kr 25,94
Each (In a Pack of 5)
Units
128Mbit 16M x 8 bit - 200MHz - - 8bit - 16M TSOP 54 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm
RS Stock No. 188-2730
Mfr. Part No.W9712G6KB25I
BrandWinbond
kr 26,092
Each (In a Pack of 5)
Units
128Mbit 16M x 8 bit - - - - 8bit - 16M TFBGA 84 12.6 x 8.1 x 0.8mm 0.8mm 12.6mm
RS Stock No. 201-7968
Mfr. Part No.S27KS0642GABHI020
kr 46,72
Each (In a Pack of 4)
Units
64Mbit 8M x 8 DDR 200MHz 8bit 16bit - - - FBGA 24 - - -
RS Stock No. 188-2580
Mfr. Part No.W9712G6KB25I
BrandWinbond
kr 20,881
Each (In a Tray of 209)
Units
128Mbit 16M x 8 bit - - - - 8bit - 16M TFBGA 84 12.6 x 8.1 x 0.8mm 0.8mm 12.6mm
RS Stock No. 188-2571
Mfr. Part No.W631GU6MB12I
BrandWinbond
kr 46,754
Each (In a Tray of 198)
Units
1Gbit 128M x 8 bit - 800MHz - - 8bit - 128M VFBGA 96 13.1 x 7.6 x 0.6mm 0.6mm 13.1mm
RS Stock No. 782-4553
Mfr. Part No.MT48LC16M16A2P-6A:G
BrandMicron
kr 61,10
Each
Units
256MB 16M x 16 bit - - 16bit 15bit 16bit 6ns 16M TSOP 54 22.22 x 10.16 x 1.2mm 1.2mm 22.22mm
RS Stock No. 188-2651
Mfr. Part No.W949D2DBJX5I
BrandWinbond
kr 22,68
Each (In a Pack of 5)
Units
512Mbit 64M x 8 bit - 200MHz 32bit - 8bit - 64M VFBGA 90 13.1 x 8.1 x 0.65mm 0.65mm 13.1mm
RS Stock No. 170-0918
Mfr. Part No.AS4C1M16S-7TCN
kr 14,512
Each (In a Tray of 117)
Units
16Mbit 1M x 16 bit - 143MHz 16bit - 16bit 5.4ns 512K TSOP 50 21.08 x 10.29 x 1.1mm 1.1mm 21.08mm
RS Stock No. 170-2170
Mfr. Part No.IS42S16160G-7TL
BrandISSI
kr 28,705
Each (In a Tray of 108)
Units
256Mbit 16M x 16 - 143MHz 16bit 15bit 16bit 5.4ns 16M TSOP 54 22.42 x 10.29 x 1.05mm 1.05mm 22.42mm
RS Stock No. 188-2581
Mfr. Part No.W971GG6SB25I
BrandWinbond
kr 31,624
Each (In a Tray of 209)
Units
1Gbit 128M x 8 bit - - - - 8bit - 128M WBGA 84 12.6 x 8.1 x 0.8mm 0.8mm 12.6mm
RS Stock No. 188-2573
Mfr. Part No.W631GU8MB12I
BrandWinbond
kr 21,918
Each (In a Tray of 242)
Units
1Gbit 128M x 8 bit - 800MHz - - 8bit - 128M VFBGA 78 10.6 x 8.1 x 0.6mm 0.6mm 10.6mm
RS Stock No. 188-2626
Mfr. Part No.W9464G6KH-5I
BrandWinbond
kr 7,476
Each (In a Pack of 10)
Units
64Mbit 8M x 8 bit - 200MHz - - 8bit - 8M TSOP 66 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm
RS Stock No. 170-2172
Mfr. Part No.IS42S16800F-7TL
BrandISSI
kr 20,858
Each (In a Tray of 108)
Units
128Mbit 8M x 16 - 143MHz 16bit 14bit 16bit 5.4ns 8M TSOP 54 22.42 x 10.29 x 1.05mm 1.05mm 22.42mm
RS Stock No. 188-2575
Mfr. Part No.W9425G6KH-5I
BrandWinbond
kr 26,409
Each (In a Tray of 108)
Units
256Mbit 32M x 8 bit - 200MHz - - 8bit - 32M TSOP 66 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm
RS Stock No. 188-2835
Mfr. Part No.W972GG6KB25I
BrandWinbond
kr 149,37
Each
Units
2Gbit 256M x 8 bit - - - - 8bit - 256M WBGA 84 12.6 x 8.1 x 0.6mm 0.6mm 12.6mm
RS Stock No. 201-7969
Mfr. Part No.S27KS0643GABHV020
kr 10 554,06
1 Tray of 338
Tray(s)
64Mbit 8M x 8 DDR 200MHz 8bit 16bit - - - FBGA 24 - - -
RS Stock No. 188-2660
Mfr. Part No.W9864G6KH-6I
BrandWinbond
kr 17,568
Each (In a Pack of 5)
Units
64Mbit 8M x 8 bit - 166MHz - - 8bit - 8M TSOP 54 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm