| 摘要 |
A memory card and a microcomputer with nonvolatile memory wherein operation under two different types of power supply specifications achieved are provided. A MultiMediacard includes a flash memory and with the flash memory. When the controller judges the level of supply voltage supplied from host equipment, operates as follows: the controller judges whether detecting point corresponding to voltage level 1.8V system been exceeded. After the judgment of excess, the controller judges whether detecting point corresponding to the voltage level system has been exceeded. When the 1.8V system, flash memory to operate the controller causes the 1.8v-system operation mode without driving regulators voltage level shifters. When the supply voltage level 3.3V system, the controller drives the regulators and the level shifters convert the voltage level causes the flash memory operate the 3.3V-system operation mode.
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