HD6432633 Datasheet, PDF (147/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

2.9.3 On-Chip Supporting Module Access Timing
The on-chip supporting modules are accessed in two states. The data bus is either 8 bits or 16 bits
wide, depending on the particular internal I/O register being accessed. Figure 2-19 shows the
access timing for the on-chip supporting modules. Figure 2-20 shows the pin states.
Bus cycle
T1
T2
ø
Internal address bus
Address
Read
access
Internal read signal
Internal data bus
Write
access
Internal write signal
Internal data bus
Read data
Write data
Figure 2-19 On-Chip Supporting Module Access Cycle
93