Abstract: A regulator circuit module, a memory storage device, and a voltage control method are provided. The regulator circuit module includes a regulator circuit, a compensating circuit, a mirror circuit, and a switch circuit. The regulator circuit is configured to generate a first voltage and a second voltage according to a reference voltage. The switch circuit is configured to turn on or cut off the compensating circuit according to a voltage difference between the first voltage and a control voltage. The mirror circuit is configured to generate the control voltage according to the second voltage.

Abstract: A system operation method for controlling a rewritable non-volatile memory module is provided. The rewritable non-volatile memory module includes a plurality of physical blocks. The system operation method includes following steps. A first signal is received from a host system through a host interface. Whether a system setting of the host interface is to be modified is determined. If the system setting is to be modified, a system parameter is read from the physical blocks, and the system setting is modified according to the system parameter. A second signal is transmitted to the host system to establish a connection recognition between the rewritable non-volatile memory module and the host system. Thereby, the settings of transmission between the host system and the rewritable non-volatile memory module are made more flexible.