Voltage level converting circuit and electronic device using the same
AssigneeHon Hai Precision Industry Co., Ltd.
InventorCHENG-KUANG MI
Life of this patent
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Abstract
A circuit for an electronic device translates logic-low and logic-high voltage levels into other voltage levels suitable for digital intercommunication between the host electronic device and external devices, and between different external devices. The circuit comprises a power supply, a processing module, a communicating module, and a voltage converting module. The power supply provides a first voltage, a second voltage, and a pulse voltage with a predetermined duty cycle. The voltage level converting module converts incoming or outgoing logic voltage levels between a first mode and a second or more modes.
Claims18
An electronic device capable of communicating with external devices, comprising:
- a power supply adapted to provide a first voltage, a second voltage, and a pulse voltage with a predetermined duty cycle;
- a processing module;
- a communicating module;
- and
- a voltage level converting module adapted to convert logic voltage levels between a first mode and a second mode;
- wherein the voltage level converting module comprises a voltage converting module and a first converting module;
- the voltage level converting module converts the pulsed voltage into a third voltage;
- the first converting module converts the logic voltage levels in the first mode generated by the processing module to the logic voltage levels in the second mode to transmit to the external devices through the communicating module based on the first voltage, the second voltage, and the third voltage.
A voltage level converting circuit connected between a processing module and a communicating module, and received a first voltage, a second voltage, and a pulse voltage with a predetermined duty cycle from a power supply;
- the voltage level converting circuit comprising:
- a voltage converting module adapted to convert the pulsed voltage into a third voltage;
- and
- a first converting module adapted to receive a first voltage, a second voltage, and the third voltage;
- wherein the first converting module converts logic voltage levels in a first mode generated by the processing module to logic voltage levels in a second mode to transmit to the communicating module.
Dependencies are inferred from the claim text.