公开(公告)号：US20240055162A1

公开(公告)日：2024-02-15

申请号：US18230855

申请日：2023-08-07

Applicant: NUVOTON TECHNOLOGY CORPORATION

Inventor： Wen-Yi LI

IPC: H01C10/20 ,  H01C10/14

CPC classification number: H01C10/20 ,  H01C10/14

Abstract: A resistor trimming device comprising a resistor trimming unit is provided, which divides a single one adjustable resistor string into a plurality of adjustable resistor string groups, so that a resistance of the parallel resistor faced by a switch can be effectively reduced, and a design of the on-resistance and off-resistance of the switch can comply with a general design rule. In addition, the resistor trimming device provided further comprises a decoder. When trimming the overall resistance of an electronic device, a user can directly input a binary code or an original thermometer code used in the adjustable resistor string being not grouped, without knowing an encoding manner, and then, the decoder generates a trimming thermometer code and a group code to control a main switch and switches in the multiple adjustable resistor string groups being the grouped from the adjustable resistor string.

公开(公告)号：US20210183285A1

公开(公告)日：2021-06-17

申请号：US17120966

申请日：2020-12-14

Applicant: Nuvoton Technology Corporation

Inventor： Ta-Chin CHIU ,  Tu- Yiin CHANG ,  Wen-Yi LI

IPC: G09G3/00 ,  G09G3/36

Abstract: A control circuit driving a display panel and including a transmission interface, a charging circuit, an image driving circuit, and a loading management circuit is provided. The transmission interface is configured to be coupled to the display panel. The charging circuit is configured to charge a capacitor. The image driving circuit transforms the voltage of the capacitor into a plurality of driving signals and provides the driving signals to the display panel via the transmission interface. The loading management circuit measures the charge time of the capacitor. In response to the charge time of the capacitor exceeding a threshold value, the loading management circuit asserts a flag to indicate the occurrence of an overload.

公开(公告)号：US20250030382A1

公开(公告)日：2025-01-23

申请号：US18543639

申请日：2023-12-18

Applicant: NUVOTON TECHNOLOGY CORPORATION

Inventor： Wen-Yi LI

IPC: H03B5/36 ,  H03B5/04

Abstract: A low power mode control module for a crystal oscillator which performs the following steps: detecting whether an oscillation output signal of the crystal oscillator is output stably; when the oscillation output signal of the crystal oscillator is output stably, comparing at least one of an oscillation input signal and the oscillation output signal with an amplitude control signal to determine whether to adjust the amplitude control signal; when the amplitude control signal does not need to be adjusted, generating an upper bound reference voltage and a lower bound reference voltage associated with the amplitude control signal; and according to whether the oscillation output signal exceeds a reference voltage range of the upper reference voltage and the lower reference voltage, generating a low power mode control output signal associated with a crystal oscillator enable signal for enabling the crystal oscillator.

公开(公告)号：US20190391190A1

公开(公告)日：2019-12-26

申请号：US16270863

申请日：2019-02-08

Applicant: Nuvoton Technology Corporation

Inventor： Wen-Yi LI

IPC: G01R23/15 ,  H03K21/38 ,  H02H1/00

Abstract: A microcontroller unit (MCU) is provided. The MCU includes a reset circuit, a clock circuit, a detection circuit, a counter and a control circuit. The detection circuit detects a first EFT event, and when a first EFT event is detected, the detection circuit generates a first block signal. The counter is coupled to the detection circuit, and when the counter receives the first block signal, the counter starts to count. The control circuit is coupled to the reset circuit, the clock circuit and the counter, and receives the first block signal from the counter. When the control circuit receives the first block signal, the control circuit maintains output signals of the reset circuit and the clock circuit in a prior state, in which the output signals have not been influenced by the first EFT event, until the count number of the counter reaches a default value.

公开(公告)号：US20190041433A1

公开(公告)日：2019-02-07

申请号：US16004166

申请日：2018-06-08

Applicant: NUVOTON TECHNOLOGY CORPORATION

Inventor： Te-Ming TSENG ,  Yeh-Tai HUNG ,  Wen-Yi LI

IPC: G01R19/10 ,  H03K5/24

CPC classification number: G01R19/10 ,  G01R19/16552 ,  G05F1/625 ,  H03K5/24

Abstract: Provided is a system for testing a reference voltage circuit applicable to a reference voltage circuit. The reference voltage circuit includes a bandgap reference voltage circuit, switching elements, a first capacitor, a second capacitor and a comparator. The testing system includes a control logic unit. In a test mode, the control logic unit adjusts an allowable value of the comparator to speed up the suitability test of the switching elements.