M16C User Manual.pdf

Bus ControlMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTER< Separate bus (no wait) >Bus cycle(Note)Bus cycle(Note)BCLKWrite signalRead signalData busOutputInputAddress bus Address AddressChip select< Separate bus (with wait) >Bus cycle(Note)Bus cycle(Note)BCLKWrite signalRead signalData busAddress busAddressOutputAddressInputChip select< Multiplexed bus >Bus cycle(Note)Bus cycle(Note)BCLKWrite signalRead signalALEAddress busAddressAddressAddress bus/Data busAddressData outputAddressInputChip selectNote : These example timing charts indicate bus cycle length.After this bus cycle sometimes come read and write cycles in succession.Figure 1.12.5. Typical bus timings using software wait40