r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 591

• Manufacturer Part Number: r5f21346mnfp
• Description: Single-chip Mcus Incorporates The R8c Cpu Core
• Manufacturer: Renesas Electronics Corporation.

R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
Figure 26.18
ICSR register
ICSR register
ICCR1 register
ICSR register
Write transmit data to ICDRT register
Write transmit data to ICDRT register
Register Setting Example in Slave Transmit Mode (I
Read TDRE bit in ICSR register
Read TEND bit in ICSR register
Dummy read ICDRR register
No
No
No
Slave transmit mode
TDRE = 1?
TEND = 1?
Last byte?
TEND bit ← 0
TDRE bit ← 0
AAS bit ← 0
End
TRS bit ← 0
Yes
Yes
Yes
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(1) Set the AAS bit to 0.
(2) Set the transmit data (except the last byte).
(3) Wait until the ICRDT register is empty.
(4) Set the transmit data of the last byte.
(5) Wait until the last byte is transmitted.
(6) Set the TEND bit to 0.
(7) Set to slave receive mode.
(8) Dummy read the ICDRR register to release
(9) Set the TDRE bit to 0.
the SCL signal.
2
C bus Interface Mode)
26. I
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2
C bus Interface