发明名称 |
SEMICONDUCTOR DEVICE, VOLTAGE COMPARISON CIRCUIT, POWER SUPPLY MANAGEMENT CIRCUIT USING THE SAME, AND ELECTRONIC DEVICE USING THEM |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for determining property of a device in a semiconductor device to which two or more different types of devices are connected. <P>SOLUTION: A first switch SW1 is provided between a determination unit 14 and a signal line 12. The first switch SW1 is turned on while the determination unit 14 determines the device 4 and thereafter turned off. A second switch SW2 is turned off while the determination unit 14 determines the device 4 and thereafter turned on. The signal line 12 connects a communication interface port P2 connectable with two or more different types of devices 4 and a communication terminal P2 of a processor which performs data communication with the device 4. The determination unit 14 monitors the electric state of the signal line to determine the device 4 connected to the port. <P>COPYRIGHT: (C)2011,JPO&INPIT |
申请公布号 |
JP2011096238(A) |
申请公布日期 |
2011.05.12 |
申请号 |
JP20100196402 |
申请日期 |
2010.09.02 |
申请人 |
ROHM CO LTD |
发明人 |
MIYANAGA KOICHI |
分类号 |
G06F13/14;H02J1/00;H03K5/08 |
主分类号 |
G06F13/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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