r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 514

• 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 23.14
(1) IICM2 = 0 (ACK and NACK interrupts), CKPH = 0 (no clock delay)
(2) IICM2 = 0, CKPH = 1 (with clock delay)
(3) IICM2 = 1 (UART transmit/receive interrupt), CKPH = 0
(4) IICM2 = 1, CKPH = 1
SCL2
SDA2
SCL2
SDA2
SCL2
SDA2
SCL2
SDA2
The above applies when:
•
CKDIR bit in U2MR register = 0 (master selected)
Transfer to U2RB Register and Interrupt Timing
1st bit
1st bit
1st bit
1st bit
D7
D7
D7
D7
2nd bit
2nd bit
2nd bit
2nd bit
D6
D6
D6
D6
3rd bit
3rd bit
3rd bit
3rd bit
D5
D5
D5
D5
4th bit
4th bit
4th bit
4th bit
D4
D4
D4
D4
b15
(DTC source number 14 request)
(DTC source number 14 request)
5th bit
5th bit
5th bit
5th bit
...
D3
D3
D3
D3
b9
U2RB register contents
Transfer to U2RB register
b8
D0
6th bit
6th bit
6th bit
6th bit
b7
Transfer to U2RB register
D2
D2
D2
D2
D7
Receive interrupt
Receive interrupt
D6
7th bit
7th bit
7th bit
7th bit
D1
D5
D1
D1
D1
D4
8th bit
8th bit
8th bit
8th bit
D3
D0
D0
D0
D0
D2
D1
b0
9th bit
9th bit
9th bit
9th bit
ACK interrupt (DTC source number 14 request),
NACK interrupt
Transfer to U2RB register
ACK interrupt (DTC source number 14 request),
NACK interrupt
Transfer to U2RB register
D8 (ACK, NACK)
D8 (ACK, NACK)
D8 (ACK, NACK)
D8 (ACK, NACK)
b15
b15
b15
Transmit
interrupt
Transfer to U2RB register
b15
...
...
...
...
Transmit interrupt
b9
b9
b9
b9
U2RB register contents
U2RB register contents
U2RB register contents
b8
D8
b8
D8
b8
D0
U2RB register contents
b8
D8
b7
D7
b7
b7
D7
D7
b7
D6
D6
D7
D6
D5
D5
D6
D5
23. Serial Interface (UART2)
D4
D4
D5
D4
D3
D3
D4
D3
D2
D2
D3
D2
D1
D1
D2
D1
D0
D0
D1
b0
b0
b0
D0
b0
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