Double Data Rate SDRAM
Typical DDR SDRAM clock rates are 133, 166 and 200 MHz (7.5, 6, and 5 ns/cycle).
While the access latency of DRAM is fundamentally limited by the DRAM array, has very high potential bandwidth.
the supply voltage was reduced from 3.3 to 2.5 V. DDR SDRAM is not backwards compatible with SDR SDRAM.
Typical DDR SDRAM clock rates are 133, 166 and 200 MHz (7.5, 6, and 5 ns/cycle).
While the access latency of DRAM is fundamentally limited by the DRAM array, has very high potential bandwidth.
the supply voltage was reduced from 3.3 to 2.5 V. DDR SDRAM is not backwards compatible with SDR SDRAM.
The following are the product parameters of DDR1 SDRAM（Double Data Rate SDRAM）：1Gb Density；2.5V Voltage；-40 ℃ ~ 85 ℃,0℃~ 70 ℃ Temperature；266/333/400 Speed；TFBGA-60,TSOPII-66 Package.
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