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Data memory (RAM)serves for storing and keeping data required for the proper operation of the programs. Depending on the program in progress, it can, but does not have to, be split into two sections. For DSP2 instruction set the data memory is considered to consist of two sectioins. The two data spaces are accessed by using two address generation units and separate data paths, i.e. two data can be read or written simultaneously. Chapter 11 gives more details. For other instructions the data memory is considered unique. Structure of the data memory of the dsPIC30F4013 and dsPIC30F6014A devices is shown in Fig. 8-2.
Fig. 8-2 Data memory of dsPIC30F4013