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    • 16. 发明申请
    • SYSTEM AND METHOD FOR DETERMINING VOLTAGE LEVELS
    • 用于确定电压水平的系统和方法
    • US20050107966A1
    • 2005-05-19
    • US10410033
    • 2003-04-09
    • Patrick Hayes
    • Patrick Hayes
    • G01D3/08G01R19/00G01R31/40G06F1/28G06F19/00H03K20060101
    • G06F1/28G01D3/08G01R19/255G01R31/40
    • A method for determining a power source voltage level of a power source in a system in which the power source is connected to a microcontroller. A charging circuit is in direct communication with a pin of the microcontroller and the power source voltage level is determined by charging the charging circuit using a constant voltage level and determining a time when the charging circuit attains a voltage level sufficient to transition the pin of the microcontroller from a state corresponding to a logic “0” to a state corresponding to a logic “1.” The determined time and a predetermined relationship between the power source voltage level and an input port transition voltage value of the microcontroller is then used to determine the power source voltage level of the power source.
    • 一种用于确定其中电源连接到微控制器的系统中的电源的电源电压电平的方法。 充电电路与微控制器的引脚直接通信,并且通过使用恒定电压电平对充电电路进行充电来确定电源电压电平,并且确定充电电路达到足以使充电电路的引脚转变的电压的时间 从对应于逻辑“0”的状态到对应于逻辑“1”的状态的微控制器。 然后使用确定的时间和电源电压电平和微控制器的输入端口转换电压值之间的预定关系来确定电源的电源电压电平。