| 摘要 |
PROBLEM TO BE SOLVED: To use a DRAM in a larger range of temperature by narrowing a refreshment interval at high temperature. SOLUTION: A temperature measurement module TMP detects temperature, and outputs a signal according to detected temperature to a refresh counter RC and an access controller A_CONT. The refresh counter RC changes a refreshment interval according to the temperature by an output signal of the temperature measurement module TMP, and generates an address to perform refreshment in accordance with the refreshment interval of the DRAM. An access controller A_CONT generates the address for performing control of total operation of CHIP 2 and access to the DRAM. COPYRIGHT: (C)2011,JPO&INPIT
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