Fujitsu MB90335 Series Hardware Manual page 447

CHAPTER 18 UART
18.7 Explanation of Operation of UART
426
Figure 18.7-10 Flowchart for Master/Slave Communications
(Master CPU)
Setting operating
Set SIN pin to
Serial data input
Set 1 byte data (address
data) selecting the slave
CPU to D0 to D7
and transfer
(A/D=1)
Set A/D to "0"
Receive operation enabled
Slave CPU and
communication
Communication end?
Other slave CPU
and communication
Receive operation disabled
FUJITSU MICROELECTRONICS LIMITED
START
mode to "1"
NO
YES
NO
YES
MB90335 Series
END
CM44-10137-6E