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Home ? Product Center ? SDRAM ? DDR2 SDRAM
   DDR2 SDRAM is very similar to DDR SDRAM, but doubles the minimum read or write unit again, to 4 consecutive words. The bus protocol was also simplified to allow higher performance operation. Also, an extra bank address pin (BA2) was added to allow 8 banks on large RAM chips.
Typical DDR2 SDRAM clock rates are 200, 266, 333 or 400 MHz (periods of 5, 3.75, 3 and 2.5 ns), generally described as DDR2-400, DDR2-533, DDR2-667 and DDR2-800 (periods of 2.5, 1.875, 1.5 and 1.25 ns). Corresponding 240-pin DIMMS are known as PC2-3200 through PC2-6400. DDR2 SDRAM is now available at a clock rate of 533 MHz generally described as DDR2-1066 and the corresponding DIMMs are known as PC2-8500 (also named PC2-8600 
 
UniICXi’an UniIC Semiconductors Co., Ltd.(Xi’an UniIC) was formerly known as Xi’an Sinochip Semiconductors Co., Ltd. which was restructured from Qimonda Technologies (Xi'an) Co., Ltd. in 2009. The company was initially founded in later 2003 as memory product development department of Infineon Technologies (Xi’an) Co., Ltd. After the span off of Qimonda Technologies from Infineon in 2006, it became an own legal entity named Qimonda Technologies (Xi'an) Co., Ltd. 
Capacity Organization Part number Voltage Package Speed Temperature Download
2Gb 256x8 SCB18T2G800AF 1.8V TFBGA-60 DDR2-667/800/1066 0 ℃~ 95 ℃ NULL
2Gb 128x16 SCB18T2G160AF 1.8V TFBGA-84 DDR2-667/800/1066 0 ℃~ 95 ℃ NULL
2Gb 256x8 SCB18T2G800AF 1.8V TFBGA-60 DDR2-667/800/1066 -40 ℃~ 95 ℃ NULL
2Gb 128x16 SCB18T2G160AF 1.8V TFBGA-84 DDR2-667/800/1066 -40 ℃~ 95 ℃ NULL
1Gb 128x8 SCB18T1G800AF 1.8V TFBGA-60 DDR2-667/800/1066 0 ℃~ 95 ℃ NULL
1Gb 64x16 SCB18T1G160AF 1.8V TFBGA-84 DDR2-667/800/1066 0 ℃~ 95 ℃ NULL
1Gb 128x8 SCB18T1G800AF 1.8V TFBGA-60 DDR2-667/800/1066 -40 ℃~ 95 ℃ NULL
1Gb 64x16 SCB18T1G160AF 1.8V TFBGA-84 DDR2-667/800/1066 -40 ℃~ 95 ℃ NULL
1Gb 64Mbx16 SCN18T1G160AF 1.8V TFBGA84 667/800/1066 C,I,A1,A2,A3,X NULL
512Mb 64Mbx8 SCB18T512800AF 1.8V TFBGA60 667/800/1066 C,I,A1,A2,A3,X NULL
512Mb 32Mbx16 SCB18T512160AF 1.8V TFBGA84 667/800/1066 C,I,A1,A2,A3,X NULL
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