发明名称 Memory controller, semiconductor integrated circuit device, microcomputer, and electronic equipment
摘要 An auto refresh control circuit of a memory controller comprises an auto refresh request generation circuit that generates auto refresh requests at the predetermined intervals, a hold count circuit that holds an auto refresh request to the dynamic random access memory in the state of being impossible to access a memory for auto-refreshing at the timing of generation of the auto refresh request and counts a number of holds, and a circuit that executes a held auto refresh request to the dynamic random access memory until the number of times of executing reaches the number of holds, when detecting the idle state. When the held auto refresh request is executed, the number of holds is updated based on the number of times the held auto refresh request is executed.
申请公布号 US2005235102(A1) 申请公布日期 2005.10.20
申请号 US20050100230 申请日期 2005.04.06
申请人 SAKURAI MIKIO 发明人 SAKURAI MIKIO
分类号 G11C11/403;G06F12/00;(IPC1-7):G06F12/00 主分类号 G11C11/403
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