厂商：Freescale
类别：16位单片机
厂商：
类别：功率继电器
类别：PhotoMOS(MOSFET输出光电耦合器)
类别：Coldfire系列单片机
厂商：TDK
类别：脉冲变压器
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DescriptionThe W9725G6JB is a 256M bits DDR2 SDRAM, and speed involving -18, -25, 25I, 25A, 25K?and -3 Status: Mass ProductionFeaturesPower Supply: VDD, VDDQ = 1.8 V ± 0.1 VDouble Data Rate architecture: two data transfers per clock cycleCAS Latency: 3, 4, 5, 6 and 7Burst Length: 4 and 8Bi-directional, differential data strobes (DQS and /DQS ) are transmitted / received with dataEdge-aligned with Read data and center-aligned with Write dataDLL aligns DQ and DQS transitions with clockDifferential clock inputs (CLK and /CLK)Data masks (DM) for write dataCommands entered on each positive CLK edge, data and data mask are referenced to both edges of /DQSPosted /CAS programmable additive latency supported to make command and data bus efficiencyRead Latency = Additive Latency plus CAS Latency (RL = AL + CL)Off-Chip-Driver impedance adjustment (OCD) and On-Die-Termination (ODT) for better signal qualityAuto-precharge operation for read and write burstsAuto Refresh and Self Refresh modesPrecharged Power Down and Active Power DownWrite Data MaskWrite Latency = Read Latency - 1 (WL = RL - 1)Interface: SSTL_18