Memory control device and method

A memory control device, comprising:

• a controller, comprising a static random access memory, receiving a command from a host device, determining an operation type indicated by the command from the host device, and obtaining data parameters corresponding to data stored in the static random access memory, wherein the static random access memory has a first buffer;
• and
• a dynamic random access memory, coupled to the controller and having a second buffer,
• wherein when the first buffer has stored data which corresponds to another operation type, the controller determines whether the first buffer is enough to store data corresponding to the command from the host device according to the data parameters, wherein when the first buffer is not enough to store data corresponding to the command from the host device, the controller backs up data which corresponds to the another operation type in the first buffer to the second buffer, wherein the another operation type is different from the operation type corresponding to the command from the host device, and the controller temporarily stores the data corresponding to the command from the host device in the first buffer, and updates the data parameters,
• wherein when the first buffer is enough to store data corresponding to the command from the host device, the controller temporarily stores the data corresponding to the command from the host device in the first buffer, and updates the data parameters without backing up data which corresponds to another operation type in the first buffer to the second buffer.