发明名称 |
MICROPROCESSOR HAVING A LOW-POWER MODE AND A NON-LOW POWER MODE, DATA PROCESSING SYSTEM AND COMPUTER PROGRAM PRODUCT |
摘要 |
A microprocessor has a low-power mode and a non-low power mode. The microprocessor includes a processor core for executing instructions provided to the microprocessor and a clock providing a clock signal, which in the non-low power mode has a first frequency and in the low power mode has a second frequency lower than the first frequency. A hardware timer is present, for scheduling an execution of an event by the microprocessor at a future point in time. The hardware timer is connected to the clock for determining a period of time between a current point in time and a point in time the event based on a number of clock cycles of the clock signal. A timer controller can determine, when the data processing system switches from the low power mode to the non-low power mode, a number of clock cycles of a clock signal with the first frequency that corresponds to a low-power mode period during which the microprocessor has been in the low power mode and adjusting the hardware timer based on the determined number.
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申请公布号 |
US2011035613(A1) |
申请公布日期 |
2011.02.10 |
申请号 |
US20080933229 |
申请日期 |
2008.04.11 |
申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
RANCUREL VIANNEY;BUFFERNE VINCENT;MEUNIER GREGORY |
分类号 |
G06F1/32 |
主分类号 |
G06F1/32 |
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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