h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 238

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 7 Bus Controller
7.4.5
Wait Control
When accessing external space, the chip can extend the bus cycle by inserting one or more wait
states (T
). There are two ways of inserting wait states: program wait insertion.
w
Program Wait Insertion
From 0 to 3 wait states can be inserted automatically between the T
state and T
state on an
2
3
individual area basis in 3-state access space, according to the settings of WCRH and WCRL.
Figure 7-13 shows an example of wait state insertion timing.
B
Figure 7-13 Example of Wait State Insertion Timing
The settings after a reset are: 3-state access, 3 program wait state insertion.
Rev. 6.00 Feb 22, 2005 page 178 of 1484
REJ09B0103-0600