r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 467

• 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 20.22
Preliminary document
Specifications in this document are tentative and subject to change.
Flow of Control 2 (Transmission/Reception Start Processing)
Enable transmit interrupt: U2TIC  00000001b
Prepare for condition generation
U2TB  Slave address + R/W + NACK
Clear STSPSEL: U2SMR4  01110000b
Clear interrupt: U2BCNIC  00000000b
Transmission/reception start
Generate start condition
U2SMR4  01110000b
U2SMR4  01110001b
U2SMR4  01111001b
U2SMR4  00001001b
Wait for start condition
To data transmission/
reception processing
generation interrupt
U2BCNIC.IR = 1?
U2BCNIC.IR = 1?
Transmit address:
processing
(Note 1)
No
Yes
No
Yes
Note:
1. Example when interrupt priority level is set to 1.
(also changes to operating register slave
To slave address reception processing
settings)
20. Serial Interface (UART2)
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