r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 429

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 20.2
Table 20.4
TXD2
RXD2
CLK2
CTS2
RTS2
SCL2
SDA2
SDA2
SCL2
IICM: Bit in U2SMR register
IICM2, SWC, SWC2, SDHI: Bits in U2SMR2 register
STSPSEL, ACKD, ACKC: Bits in U2SMR4 register
Pin Name
Noise
filter
Noise
filter
Preliminary document
Specifications in this document are tentative and subject to change.
I
UART2 Pin Configuration
2
C Mode Block Diagram
Delay
circuit
IICM = 0
IICM = 1
STSPSEL = 0
ACKC = 1
STSPSEL = 0
STSPSEL = 1
STSPSEL = 1
Falling edge
ACKD
I/O port
detection
Stop condition
detection
Start condition
detection
Input/Output
Input/Output
Input/Output
Output
Output
Input
Input
ACKC = 0
I/O
Q
R
D
T
Q
Port register
Internal clock
External clock
SDHI
Q
Arbitration
SWC2
R
S
Serial data output
Serial data input
Transfer clock input/output
Transmission control input
Reception control input
Clock input/output for I
Data input/output for I
Transmit register
S
R
control
SDA (STSP)
CLK
SCL (STSP)
Q
Start/stop condition generation block
9th bit falling edge
Receive register
Bus
UART2
busy
UART2
SWC
9th bit
D
D
T
T
Q
Q
2
2
C mode
C mode
IICM2 = 1
ACK
Function
IICM = 1 and
IICM2 = 0
IICM2 = 1
IICM = 1 and
IICM2 = 0
NACK
20. Serial Interface (UART2)
DTC request
UART2 transmit/NACK
interrupt request
UART2 receive/ACK
interrupt request
DTC request
Start/stop condition detection
interrupt request
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