Electronic fuse device and operation method thereof
AssigneeFaraday Technology Corp.
InventorsChi-Chou Huang, Yun-Chuan Teng, Yu-Tang Wang
Life of this patent
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Abstract
The disclosure provides an electronic fuse (eFuse) device and an operation method thereof. The eFuse device includes an eFuse, a readout circuit, a register, and a safety control device. The readout circuit reads out target data recorded by the eFuse to the register and the safety control device. The safety control device compares the target data provided by the readout circuit with the target data provided by the register to determine whether a soft error occurs in the target data stored in the register. When the soft error occurs in the target data stored in the register, the readout circuit reads out the target data recorded by the eFuse again to the register and the safety control device.
Claims22
An electronic fuse (eFuse) device, comprising:
- an eFuse;
- a readout circuit coupled to the eFuse, wherein the readout circuit reads out target data recorded by the eFuse based on a trigger of a clock signal;
- a first register coupled to the readout circuit, wherein the readout circuit stores the target data from the eFuse in the first register;
- and
- a safety control device coupled to the readout circuit to receive and store the target data from the eFuse, and coupled to the first register to receive the target data stored in the first register, wherein
- the safety control device compares the target data provided by the readout circuit with the target data provided by the first register to obtain a comparison result, and determines whether a soft error occurs in the target data stored in the first register based on the comparison result;
- and
- in response to the soft error occurring in the target data stored in the first register, the readout circuit reads out the target data recorded by the eFuse again based on the clock signal, and the readout circuit again stores the target data from the eFuse in the first register and the safety control device respectively.
An operation method of an eFuse device, comprising:
- reading out target data recorded by an eFuse of the eFuse device based on a trigger of a clock signal by a readout circuit of the eFuse device;
- storing the target data from the eFuse respectively in a first register of the eFuse device and a safety control device of the eFuse device by the readout circuit;
- comparing the target data provided by the readout circuit with the target data provided by the first register by the safety control device to obtain a comparison result, and determining whether a soft error occurs in the target data stored in the first register based on the comparison result;
- and
- in response to the soft error occurring in the target data stored in the first register, reading out the target data recorded by the eFuse again based on the clock signal by the readout circuit, and again storing the target data from the eFuse in the first register and the safety control device respectively by the readout circuit.
Dependencies are inferred from the claim text.