发明名称 |
SEMICONDUCTOR DEVICE, CONTROL METHOD OF SEMICONDUCTOR DEVICE, AND DESIGN SUPPORT METHOD OF SEMICONDUCTOR DEVICE |
摘要 |
<P>PROBLEM TO BE SOLVED: To easily acquire the number of cycles required for execution of DVFS without being affected by architecture of a built-in system. <P>SOLUTION: Firmware (21) has: a cycle number approximation routine (213); and an operation voltage and frequency calculation routine (213). The cycle number approximation routine includes a cycle number approximation function. The cycle number approximation function approximates the number of cycles of a task by input of an attribute parameter for determining the processing content of a user circuit (6). The operation voltage and frequency calculation routine calculates target operation voltage and a frequency of the user circuit (6) on the basis of the number of cycles obtained by execution of the cycle number approximation routine. <P>COPYRIGHT: (C)2013,JPO&INPIT |
申请公布号 |
JP2013088892(A) |
申请公布日期 |
2013.05.13 |
申请号 |
JP20110226532 |
申请日期 |
2011.10.14 |
申请人 |
RENESAS ELECTRONICS CORP |
发明人 |
MORI SOJI |
分类号 |
G06F15/78;G06F1/04;G06F1/08;G06F17/50 |
主分类号 |
G06F15/78 |
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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