HD64336900G Datasheet, PDF (279/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Slave transmit mode
Clear AAS in ICSR
Write transmit data
in ICDRT
Read TDRE in ICSR
No
TDRE=1 ?
Yes
No
Last
byte?
Yes
Write transmit data
in ICDRT
[1] Clear the AAS flag.
[1]
[2] Set transmit data for ICDRT (except for the last data).
[3] Wait for ICDRT empty.
[2]
[4] Set the last byte of transmit data.
[5] Wait for the last byte to be transmitted.
[3]
[6] Clear the TEND flag .
[7] Set slave receive mode.
[8] Dummy-read ICDRR to release the SCL line.
[4]
[9] Clear the TDRE flag.
Read TEND in ICSR
No
[5]
TEND=1 ?
Yes
Clear TEND in ICSR
[6]
Clear TRS in ICCR1 to 0
[7]
Dummy read ICDRR
[8]
Clear TDRE in ICSR
[9]
End
Figure 15.19 Sample Flowchart for Slave Transmit Mode
Rev. 1.00, 11/03, page 251 of 376