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361
Yes
Yes
No
No
<End>
Clear RE bit to 0 in SCR
Finished receiving?
(2)
(1)
Initialize
(4)
(3)
(5)
(1)
(2)(3)
(4)
(5)
Start receiving
Error handling
ORER= 1
RDRF= 1
Read RDRF flag in SSR
Read ORER flag in SSR
(continued on next page)
Read receive data from
RDR, and clear RDRF
flag to 0 in SSR
No
Yes
SCI initialization: the receive data
input function of the RxD pin is
selected automatically.
Receive error handling: if a receive
error occurs, read the ORER flag in
SSR, then after executing the
necessary error handling, clear the
ORER flag to 0. Neither transmitting
nor receiving can resume while the
ORER flag remains set to 1.
SCI status check and receive data
read: read SSR, check that the RDRF
flag is set to 1, then read receive data
from RDR and clear the RDRF flag to
0. Notification that the RDRF flag
has changed from 0 to 1 can also be
given by the RXI interrupt.
To continue receiving serial data:
check the RDRF flag, read RDR, and
clear the RDRF flag to 0 before the
MSB (bit 7) of the current frame is
received.
Figure 12.18 Sample Flowchart for Serial Receiving
Содержание H8/3008
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