| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To surely execute a write operation or the like by a simple configuration even when stability of power supply from an external component is inhibited in a semiconductor device equipped with a nonvolatile memory. <P>SOLUTION: The semiconductor device 1 includes a nonvolatile memory core 10 including a nonvolatile memory, and a switch 20 for switching a power supply mode for supplying power to the nonvolatile memory core 10 between a first mode in which power is supplied from an external power supply and a second mode in which power is supplied from an accumulation device 31 used as a back-up power supply. The nonvolatile memory core 10 outputs a status signal indicating its operation state, and the switch 20 switches the power supply mode according to an operation state of the nonvolatile memory core 10 that the status signal indicates. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
