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TDRE = 1 ?
Yes
Yes
No
Slave transmit mode
Clear AAS in ICSR
Write transmit data
in ICDRT
Read TDRE in ICSR
Last byte?
Write transmit data
to ICDRT
Read TEND in ICSR
Clear TEND in ICSR
Set TRS = 0 in ICCRA
Dummy reading of ICDRR
Clear TDRE in ICSR
End
[1] Clear the AAS flag.
[2] Set transmit data to ICDRT (except for the last byte).
[3] Wait for ICDRT empty.
[4] Set the last byte of the transmit data.
[5] Wait the transmission end of the last byte.
[6] Clear the TEND flag.
[7] Set slave receive mode.
[8] Dummy reading of ICDRR to release the SCL line.
[9] Clear the TDRE flag.
No
No
Yes
TEND = 1 ?
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
Figure 17.16 Sample Flowchart for Slave Transmit Mode
Содержание H8S/2437
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