Download M32150 datasheet

WAIT CON TR OLLER
14.1 Summary of wait controller
When the expanded external area is accessed, the wait controller controls the number of waits to be
inserted_____
to bus cycles based on the software-programmed number and the pulse width LOW to be placed
on the WAIT pin.
The software-programmable number of waits is 1-4 (one wait is the least to be inserted to bus cycles at the
external
access).
____
If the WAIT pin is pulled LOW at the end of_____
the software-programmed internal waits, they are prolonged.
These prolonged wait cycles end when the WAIT pin is driven HIGH, and another bus cycles begin.
Table 14.1.2 Number of waits controllable by wait controller
Expanded external area
Address
Number of waits to be inserted
CS0 area
H'0002 0000 to H'0007 FFFF
Software-programmable 1-4 wait cycles plus
(External expanded mode)
an arbitrary number of wait cycles determined
H'0000 0000 to H'0007 FFFF
by the pulse width LOW placed on the WAIT
(Processor mode)
pin can be inserted
_____
(software-programmed waits have precedence)
CS1 area
H'0008 0000 to H'000F FFFF
Software-programmable 1-4 wait cycles plus
(External expanded mode
an arbitrary number of wait cycles determined
and Processor mode)
by the pulse width LOW placed on the WAIT
_____
pin can be inserted
(software-programmed waits have precedence)
M32150F4TFP User's Manual
14-3