| 摘要 |
A refresh controlling method and a refresh controlling apparatus includes a count initialization value setting unit to set a count initialization value at an initial refresh interval or a changed refresh interval, and a bus request signal generation unit to generate a bus request signal when the count initialization value is completely lapsed. The apparatus also includes a refresh signal generator generate a refresh signal when a bus approval signal is generated by detection of a bus blank period, during which a bus request signal is not received from bus master devices, or when a bus approval signal is generated in response to the bus request signal received from the bus request signal generation unit. According to a logic signal received from the bus request signal generation unit, a bus blank determiner determines whether the bus approval signal has been generated due to the bus blank period. If it is determined that the bus approval signal has been generated due to the bus blank period, the bus blank determiner controls the count initialization value setting unit, the bus request signal generation unit, and the refresh signal generator.
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