Packaged integrated circuit, bidirectional data transmission method, and control system
AssigneeNuvoton Technology Corporation
InventorsChih-Hsien YANG, Chieh-Sheng TU
Life of this patent
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Abstract
A packaged integrated circuit including an input-output pin, a first chip and a second chip is provided. The first chip includes a first voltage converter circuit, a second voltage converter circuit, and a data transmission circuit. The first voltage converter circuit, the second voltage converter circuit, and the data transmission circuit are connected in parallel between an internal pin and the input-output pin. The second chip enables the first voltage converter circuit, the second voltage converter circuit, or the data transmission circuit based on the operation mode of the internal pin.
Claims20
A packaged integrated circuit, comprising:
- an input-output pin;
- a first chip, comprising:
- a first internal pin electrically connected to the input-output pin;
- a second internal pin;
- a first voltage conversion circuit converting a voltage level of the first internal pin to generate a first converted level and providing the first converted level to the second internal pin;
- a second voltage conversion circuit converting a voltage level of the second internal pin to generate a second converted level and providing the second converted level to the first internal pin;
- and
- a data transmission circuit providing a transmission path between the first internal pin and the second internal pin;
- and
- a second chip comprising:
- a third internal pin electrically connected to the second internal pin;
- a storage circuit configured to store program code;
- and
- a processing circuit executing the program code to set an operation mode of the third internal pin and enabling the first voltage conversion circuit, the second voltage conversion circuit, or the data transmission circuit based on the operation mode of the third internal pin.
A bidirectional data transmission method applied in a packaged integrated circuit comprising an input-output pin, comprising:
- executing program code to generate an execution result, wherein the program code is stored in a storage circuit;
- setting an operation mode of an internal pin based on the execution result;
- enabling a first voltage conversion circuit to convert a voltage level of the input-output pin in response to the operation mode of the internal pin being a first mode;
- enabling a second voltage conversion circuit to convert the voltage level of the input-output pin in response to the operation mode of the internal pin being a second mode;
- and
- enabling a data transmission circuit to form a transmission path between the internal pin and the input-output pin in response to the operation mode of the internal pin being a third mode,
- wherein the first voltage conversion circuit, the second voltage conversion circuit and the data transmission circuit are coupled between the internal pin and the input-output pin.
A control system comprising:
- an external device;
- and
- a packaged integrated circuit coupled to the external device and comprising:
- an input-output pin electrically connected to the external device;
- a micro-controller chip comprising an internal pin;
- and
- a voltage conversion chip comprising a first path, a second path, and a third path, wherein the first path, the second path, and the third path are connected in parallel between the internal pin and the input-output pin,
- wherein:
- in response to the internal pin serving as an input pin, the micro-controller chip turns on the first path,
- in response to the internal pin serving as an output pin, the micro-controller chip turns on the second path,
- in response to a voltage level of the internal pin being in a floating state, the micro-controller chip turns on the third path.
Dependencies are inferred from the claim text.