r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1043

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Additional information: If only one byte is received, steps [2] through [6] are omitted following step [1],
No
No
Set ACKBT=0 in ICIER
Set ACKBT=1 in ICIER
Dummy read ICDRR
Read RDRF in ICSR
Read RDRF in ICSR
Slave receive mode
Clear AAS in ICSR
Figure 17.17 Sample Flowchart for Slave Receive Mode
Read ICDRR
Read ICDRR
Read ICDRR
Last receive
RDRF=1 ?
RDRF=1 ?
End
- 1?
and processing jumps to step [7]. Step [8] is ICDRR dummy read.
Yes
Yes
No
Yes
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[1] Clear the flag AAS.
[2] Set the acknowledge for the transmit device.
[3] Dummy read ICDRR.
[4] Wait the reception end of 1 byte.
[5] Check if the (last receive - 1).
[6] Read the received data.
[7] Set the acknowledge for the last byte.
[8] Read the received data of the (last byte - 1).
[9] Wait the reception end of the last byte.
[10] Read the received data of the last byte.
Rev. 1.00 Sep. 19, 2008 Page 1013 of 1342
Section 17 I
2
C Bus Interface 2 (IIC2)
REJ09B0467-0100