| 摘要 |
PURPOSE: A storage unit is provided to minimize the deformation of a controller and the deformation of hardware by increasing the number of memory chips which can be controlled without increasing the additional chip enable signal. CONSTITUTION: A memory unit(100) comprises the memory chips of n activated in response to memory chip active signals of n. The memory unit comprises two ranks(110, 120) including the memory chips. A controller part(300) generates the control signals of m. A memory chip activation signal generator(200) generates the memory chip activation signal of n by combining the chip enable signals of m.
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