W972GG6KB-25 is a high-density DDR2 SDRAM synchronous dynamic random access memory introduced by Winbond Electronics.It is packaged in 84-ball TFBGA,and is suitable for embedded systems,communication equipment and consumer electronic terminals with strict requirements on data throughput and power consumption control.DDR2 SDRAM belongs to the volatile storage category.The core work of W972GG6KB-25 depends on the synchronous clock signal.All command sending and data transmission are based on the rising edge of the external clock to ensure strict timing alignment with the system bus.The W972GG6KB-25 DDR2 SDRAM supports the self-refresh mode.When the system enters the low-power standby state,the internal timer can independently maintain the refresh operation.At this time,the power supply current drops to the microampere level,which is beneficial to the battery-powered equipment's battery life optimization.
From the internal organizational structure,W972GG6KB-25 provides a total storage capacity of 2Gb(that is,2048Mb),with a specific arrangement of 16,777,216 words×8 independent Bank)×16 bits of data.This multi-bank architecture supports parallel access operation,which can effectively hide row activation and precharge delay,thus improving random access efficiency.The width of W972GG6KB-25 16-bit data bus is balanced between PCB wiring density and transmission bandwidth,which is especially suitable for application scenarios with medium bit width requirements.
The W972GG6KB-25 chip supports a wide range of power input from 1.7V to 1.9V,with a nominal core voltage of 1.8V,which significantly reduces the dynamic power consumption compared with the 2.5V of the original DDR.At the same time,the on-chip termination(ODT)resistor is integrated,which can dynamically adjust the signal reflection suppression ability according to the system load and improve the high-speed signal integrity.The working temperature range of W972GG6KB-25 is divided into 0 C to 85 C(TC shell temperature),which covers the temperature range of commercial grade and industrial grade,and meets the continuous operation requirements of most indoor and outdoor non-extreme environments.
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Keywords:DDR2 SDRAM,W972GG6KB-25
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