1. A memory management method for a memory storage device, wherein the memory storage device comprises a rewritable non-volatile memory module having a plurality of available physical erasing units, the memory management method comprising: allocating a part of the available physical erasing units to configure a plurality of first type super physical units, wherein each of the first type super physical units at least comprises a first available physical erasing unit and a second available physical erasing unit, and the first available physical erasing unit and the second available physical erasing unit are simultaneously programmed; allocating another part of the available physical erasing units to configure at least one second type super physical unit, wherein one of the at least one second type super physical unit at least comprises a third available physical erasing unit and a fourth available physical erasing unit, and the third available physical erasing unit is programmed before the fourth available physical erasing unit is programmed; configuring each available physical erasing unit of the first type super physical units as to be programmed based on one of a first programming mode and a second programming mode; and configuring each available physical erasing unit of the at least one second type super physical unit as to be programmed only based on the first programming mode, wherein each memory cell of one available physical erasing unit programmed based on the first programming mode is configured to store a first number of data bit, each memory cell of one available physical erasing unit programmed based on the second programming mode is configured to store a second number of data bit, and the second number is larger than the first number.