Datasheet

Section 19 Synchronous Serial Communication Unit (SSU)
R01UH0310EJ0500 Rev. 5.00 Page 1071 of 1384
Sep 25, 2012
H8S/2426, H8S/2426R, H8S/2424 Group
Yes
[1]
[2]
[3]
[4]
[1] Initial setting:
Specify the receive data format.
[2], [4] Receive error processing:
When a receive error occurs, execute the designated error
processing after reading the ORER bit in SSSR. After that,
clear the ORER bit to 0. While the ORER bit is set to 1,
transmission or reception is not resumed.
[3] To complete reception:
To complete reception, read receive data after clearing the
RE bit to 0. When reading SSRDR without clearing the RE
bit, reception is resumed.
No
Yes
Yes
No
Start
Initial setting
Read SSSR
RDRF = 1?
ORER = 1?
Consecutive data reception?
Read received data in SSRDR
RDRF automatically cleared
RE = 0
Read receive data in SSRDR
End reception
Overrun error processing
Clear ORER in SSSR
End reception
Note: Hatching boxes represent SSU internal operations.
No
Figure 19.16 Flowchart Example of Data Reception
(Clock Synchronous Communication Mode)