US 12,475,953 B2
Control circuit and control method thereof
Wei-Ling Lin, Jhubei (TW); Chia-Hao Huang, Hsinchu Science Park (TW); and Tsun-Yao Fan, Taipei (TW)
Assigned to NUVOTON TECHNOLOGY CORPORATION, Hsinchu Science Park (TW)
Filed by Nuvoton Technology Corporation, Hsinchu Science Park (TW)
Filed on Dec. 30, 2023, as Appl. No. 18/401,467.
Claims priority of application No. 112120206 (TW), filed on May 31, 2023.
Prior Publication US 2024/0404603 A1, Dec. 5, 2024
Int. Cl. G11C 16/22 (2006.01); G11C 16/14 (2006.01)
CPC G11C 16/22 (2013.01) [G11C 16/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control method applied a write protection logic circuit to adjust at least one of an enable-set value stored in a storage circuit, a mode-set value stored in the storage circuit, and a first protection-set value stored in a first register which is independent of the storage circuit, comprising:
receiving and decoding an input command;
reading the mode-set value in response to the input command being a write command;
determining whether the mode-set value matches a first pre-determined value;
changing the mode-set value according to data information of the write command in response to the mode-set value matching the first pre-determined value and address information of the write command corresponding to the mode-set value;
replacing the first protection-set value with the data information of the write command in response to the mode-set value matching the first pre-determined value, the address information of the write command corresponding to the first register, and a second protection-set value not matching a second specific value; and
maintaining the enable-set value and the mode-set value in response to the mode-set value not matching the first pre-determined value,
wherein the second protection-set value is stored in a second register which is independent of the storage circuit.