Release the serial array unit from the reset status
and start clock supply.
Setting the PER0 register
Starting initial setting
Setting the SPSm register
Setting the SMRmn register
Setting the SCRmn register
Setting the SDRmn register
Setting the SOm register
Changing setting of the
SOEm register
Set the operation clock.
Set an operation mode, etc.
Set a communication format.
Set a transfer baud rate (setting the transfer clock
by dividing the operation clock (f
MCK)).
Set the initial output level of the serial clock
(CKOmn) and serial data (SOmn).
Set the SOEmn bit to 1 and enable data output of
the target channel.
Setting port
Writing to the SSm register
Completing initial setting
Enable data output and clock output of the target
channel by setting a port register and a port mode
register.
Set the SSmn bit of the target channel to 1
(SEmn bit = 1: to enable operation).
Initial setting is completed.
Set transmit data to the SIOp register (bits 7 to 0 of
the SDRmn register) and start.
Write 1 to the STmn bit of the target channel.
(SEmn = 0: to operation stop status)
Writing the STm register
Starting setting to stop
Changing setting of the
SOEm register
Stop setting is completed
Set the SOEmn bit to 0 and stop the output of the
target channel.
After the stop setting is completed, go to the next
processing.
The levels of the serial clock (CKOmn) and
serial data (SOmn) on the target channel can
be changed if necessitated by an emergency .
Changing setting of the
SOm register
Setting the PER0 register
Reset the serial array unit by stopping the clock
supply to it.
(Selective)
(Selective)
(Essential)
(Essential)
TSFmn = 0?
No
If there is any data being transferred, wait for their
completion.
(If there is an urgent must stop, do not wait.)
Yes
(Selective)
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