发明名称 |
DYNAMICAL POWER SAVING DEVICE FOR MCU EQUIPPED WITH MASKING PART, AND METHOD THEREOF |
摘要 |
PURPOSE: A dynamical power saving device for an MCU(Micro Controller Unit) and a method thereof are provided to reduce power consumption of the MCU by stopping operation of the MCU until a condition is satisfied if the MCU performs a loop operation and a polling operation for a specified external or internal signal. CONSTITUTION: A condition register(10) selects polling conditions to make the MCU(16) wait in a sleep mode. A multiplexer(11) selects one from the preset conditions by responding to output of the condition register. A polling register(12) determines whether the MCU waits in a state that an output signal of the multiplexer is logic-high or logic-low. An XOR operator(13) performs an XOR operation for the output of the polling register and the multiplexer. A masking part(14) masks a clock provided to the MCU in a waiting operation by providing a mask clock. A logic operator(15) controls the operation of the MCU by performing the logic operation for the output of the XOR operator and the mask clock.
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申请公布号 |
KR20040092771(A) |
申请公布日期 |
2004.11.04 |
申请号 |
KR20030027083 |
申请日期 |
2003.04.29 |
申请人 |
MAGNACHIP SEMICONDUCTOR, LTD. |
发明人 |
KYUNG, SEUNG JUN |
分类号 |
G06F1/32;(IPC1-7):G06F1/32 |
主分类号 |
G06F1/32 |
代理机构 |
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