M16C User Manual.pdf

External BusesMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER5.3.2 Memory Space Expansion Mode 1In memory space extension mode 1, the accessible area is extended to the memory space that can beaccessed in normal mode plus 176 Kbytes. This 176-Kbyte area ranges from address 0400016 to address2FFFF16.Memory expansion modeMicroprocessor mode0000016SFR areaProgram exclusive areaInternal RAM areaInternal RAM areaInternal area reserved Internal area reservedCS3CS3176K bytesCS2CS2area of memoryexpandedCS1CS1External area External areaCS0CS0program/data areaInternal area reserved Internal ROM area CS0 area00400160400016080001628000163000016D000016FFFFF16SFR area32K bytesCS1 area128K bytesCS2 areaData exclusive area16K bytesCS3 areaFigure 5.3.3. Memory Map in Memory space expansion mode 1When fetching a program from the area consisting of these addresses 0400016 through 2FFFF16, the______CPU reads program code from memory locations selected by the CS0 chip select signal. Also, when______ ______ ______accessing this area for data, the CPU accesses memory locations selected by the CS1, CS2, or CS3 chipselect signal.In areas following address 3000016, for both program fetch and data access, the CPU accesses memory______locations selected by the CS0 chip select signal.514