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庫存編號 782-4566
製造零件編號MT46V16M16P-5B :M
BrandMicron
TWD222.00
單位
256MB 16M x 16 bit DDR 200MHz 16bit 15bit 16bit 5ns 16M TSOP 66 22.22 x 10.16 x 1.2mm 1.2mm 22.22mm
RS庫存編號 811-5125
製造零件編號IS42S16400J-7TLI
BrandISSI
TWD73.00
/個 (每包:2個)
單位
64Mbit 4M x 16 bit - 143MHz 16bit 14bit 16bit 5.4ns 4M TSOP 54 22.42 x 10.29 x 1.05mm 1.05mm 22.42mm
RS庫存編號 170-2171
製造零件編號IS42S16400J-7TLI
BrandISSI
TWD61.10
Each (In a Tray of 108)
單位
64Mbit 4M x 16 bit - 143MHz 16bit 14bit 16bit 5.4ns 4M TSOP 54 22.42 x 10.29 x 1.05mm 1.05mm 22.42mm
RS庫存編號 782-4535
製造零件編號MT48LC4M32B2P-6A :L
BrandMicron
TWD573.00
單位
128MB 4M x 32 bit - - 32bit 14bit 32bit 6ns 4M TSOP 86 22.22 x 10.16 x 1.2mm 1.2mm 22.22mm
RS庫存編號 188-2765
製造零件編號W631GU6MB12I
BrandWinbond
TWD153.40
/個 (每包:5個)
單位
1Gbit 128M x 8 bit - 800MHz - - 8bit - 128M VFBGA 96 13.1 x 7.6 x 0.6mm 0.6mm 13.1mm
RS庫存編號 188-2642
製造零件編號W9751G8KB25I
BrandWinbond
TWD88.60
/個 (每包:5個)
單位
512Mbit 64M x 8 bit - - - - 8bit - 64M WBGA 60 12.6 x 8.1 x 0.6mm 0.6mm 12.6mm
RS庫存編號 188-2805
製造零件編號W9725G6KB25I
BrandWinbond
TWD111.20
/個 (每包:5個)
單位
256Mbit 32M x 8 bit - - - - 8bit - 32M WBGA 84 12.6 x 8.1 x 0.6mm 0.6mm 12.6mm
RS庫存編號 188-2590
製造零件編號W979H6KBVX2I
BrandWinbond
TWD151.30
Each (In a Tray of 171)
單位
512Mbit 64M x 8 bit - 400MHz 16bit - 8bit - 64M VFBGA 134 11.6 x 10.1 x 0.63mm 0.63mm 11.6mm
RS庫存編號 797-5829
製造零件編號AS4C4M32S-7BCN
TWD8,260.00
單位
128Mbit 4M x 32 bit - 133MHz 32bit - 32bit 5.4ns 1M TFBGA 90 8.1 x 13.1 x 0.79mm 0.79mm 8.1mm
RS庫存編號 811-5141
製造零件編號IS42S32400F-7TL
BrandISSI
TWD124.00
單位
128Mbit 4M x 32 - 143MHz 32bit 14bit 32bit 6.5ns 4M TSOP 86 22.42 x 10.29 x 1.05mm 1.05mm 22.42mm
RS庫存編號 193-8780
製造零件編號S27KL0641DABHI020
TWD115.30
Each (In a Tray of 338)
單位
64Mbit 8M x 8 bit DDR 100MHz 8bit - 8bit 36ns 8M FBGA 24 8 x 6 x 0.8mm 0.8mm 8mm
RS庫存編號 188-2597
製造零件編號W9812G6KH-5I
BrandWinbond
TWD60.40
Each (In a Tray of 108)
單位
128Mbit 16M x 8 bit - 200MHz - - 8bit - 16M TSOP 54 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm
RS庫存編號 188-2571
製造零件編號W631GU6MB12I
BrandWinbond
TWD135.30
Each (In a Tray of 198)
單位
1Gbit 128M x 8 bit - 800MHz - - 8bit - 128M VFBGA 96 13.1 x 7.6 x 0.6mm 0.6mm 13.1mm
RS庫存編號 188-2742
製造零件編號W631GG8MB12I
BrandWinbond
TWD106.40
/個 (每包:5個)
單位
1Gbit 128M x 8 bit - 800MHz - - 8bit - 128M VFBGA 78 10.6 x 8.1 x 0.6mm 0.6mm 10.6mm
RS庫存編號 797-5790
製造零件編號AS4C1M16S-7TCN
TWD71.70
/個 (每包:3個)
單位
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庫存編號 188-2587
製造零件編號W9751G8KB25I
BrandWinbond
TWD70.50
Each (In a Tray of 209)
單位
512Mbit 64M x 8 bit - - - - 8bit - 64M WBGA 60 12.6 x 8.1 x 0.6mm 0.6mm 12.6mm
RS庫存編號 188-2832
製造零件編號W9425G6KH-5I
BrandWinbond
TWD94.60
/個 (每包:5個)
單位
256Mbit 32M x 8 bit - 200MHz - - 8bit - 32M TSOP 66 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm
RS庫存編號 188-2575
製造零件編號W9425G6KH-5I
BrandWinbond
TWD83.80
Each (In a Tray of 108)
單位
256Mbit 32M x 8 bit - 200MHz - - 8bit - 32M TSOP 66 22.35 x 10.29 x 1.05mm 1.05mm 22.35mm
RS庫存編號 171-2244
製造零件編號W94AD6KBHX5I/TRAY
BrandWinbond
TWD203.00
單位
1Gbit 64 M x 16 bit DDR DDR 16bit 16bit 64 M 6.5ns 64M VFBGA 60 8.1 x 9.1 x 0.65mm 0.65mm 8.1mm
RS庫存編號 173-0302
製造零件編號AS4C4M32S-7BCN
TWD7,709.50
Each (In a Tray of 190)
單位
128Mbit 4M x 32 bit - 133MHz 32bit - 32bit 5.4ns 1M TFBGA 90 8.1 x 13.1 x 0.79mm 0.79mm 8.1mm