H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 193

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

6.4.5
When accessing external space, the H8S/2350 Group can extend the bus cycle by inserting one or
more wait states (T
wait insertion using the WAIT pin.
Program Wait Insertion
From 0 to 3 wait states can be inserted automatically between the T
individual area basis in 3-state access space, according to the settings of WCRH and WCRL.
Pin Wait Insertion
Setting the WAITE bit in BCRL to 1 enables wait insertion by means of the WAIT pin.
Program wait insertion is first carried out according to the settings in WCRH and WCRL.
Then, if the WAIT pin is low at the falling edge of in the last T
inserted. If the WAIT pin is held low, T
This is useful when inserting four or more T
for different external devices.
The WAITE bit setting applies to all areas.
Wait Control
w
). There are two ways of inserting wait states: program wait insertion and pin
w
states are inserted until it goes high.
w
states, or when changing the number of T
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2
or T
2
state and T
Section 6 Bus Controller
w
state, a T
REJ09B0330-0300
3
state on an
w
state is
w
states