United Microelectronics Corp.

Ming-Jen Chang

Cheng-Hsiao Lai

Ying-Ting Lin

Yung-Tsai Hsu

Chi-Fa Lien

Yu-Syuan Lin

Ming-Shan Ho

Kuo-Cheng Chou

Chung-Yi Luo

Ko-Chin Chang

Cheng-Chieh Cheng

A memory sector with trimmed reference currents, including eight unit cells corresponding to an even word line and eight unit cells corresponding to an odd word line, and each unit cell has erased state and programmed state, wherein the logic state of unit cell corresponding to the odd word line is determined by a first reference current based on cell currents of the 8 unit cells corresponding to the even word line in programmed state and cell currents of the eight unit cells corresponding to the odd word line in erased state, and the logic state of unit cell corresponding to the even word line is determined by a second reference current based on cell currents of the eight unit cells corresponding to the even word line in erased state and cell currents of the 8 unit cells corresponding to the odd word line in programmed state.

Memory sector with trimmed reference currents and method of improving memory reading window thereof

A physically unclonable function includes a flash memory, a current comparator and a controller. The flash memory includes a plurality of memory cells. A method of operating the physically unclonable function circuit includes the controller setting the plurality of memory cells to an initial data state, the controller setting the plurality of memory cells between the initial data state and an adjacent data state of the initial data state, the current comparator reading a first current from a memory cell in a first section of the plurality of the memory cells, the current comparator reading a second current from a memory cell in a second section of the plurality of the memory cells, and the current comparator outputting a random bit according to the first current and the second current.

Method of operating physically unclonable function circuit, physically unclonable function circuit and semiconductor chip

Growing community of inventors

Kaohsiung, Taiwan

Ming-Jen Chang