HD6433682 ETC, HD6433682 Datasheet - Page 341

• Manufacturer Part Number: HD6433682
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series
• Manufacturer: ETC

17.4.8
Flowcharts in respective modes that use the I
Example of Use
No
No
No
Write transmit data in ICDRT
Write transmit data in ICDRT
No
No
No
Set MST to 1 and TRS
Read ACKBR in ICIER
Read BBSY in ICCR2
Read TDRE in ICSR
Read TEND in ICSR
Clear TEND in ICSR
Clear STOP in ICSR
Read STOP in ICSR
Clear TDRE in ICSR
Read TEND in ICSR
Write transmit data
Set MST and TRS
Write 1 to BBSY
Write 0 to BBSY
to 0 in ICCR1
Figure 17.17 Sample Flowchart for Master Transmit Mode
in ICCR1 to 1.
and 0 to SCP.
ACKBR=0 ?
TEND=1 ?
TDRE=1 ?
TEND=1 ?
STOP=1 ?
BBSY=0 ?
Last byte?
in ICDRT
Transmit
and SCP
Initialize
mode?
Start
End
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
Mater receive mode
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10] Wait for last byte to be transmitted.
[11] Clear the TEND flag.
[12] Clear the STOP flag.
[13] Issue the stop condition.
[14] Wait for the creation of stop condition.
[15] Set slave receive mode. Clear TDRE.
Test the status of the SCL and SDA lines.
Set master transmit mode.
Issue the start candition.
Set the first byte (slave address + R/ ) of transmit data.
Wait for 1 byte to be transmitted.
Test the acknowledge transferred from the specified slave device.
Set the second and subsequent bytes (except for the final byte) of transmit data.
Wait for ICDRT empty.
Set the last byte of transmit data.
2
C bus interface are shown in figures 17.17 to 17.20.
Rev. 3.00, 05/03, page 311 of 472