Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 17 ASYNCHRONOUS SERIAL INTERFACE C (UARTC)
R01UH0042EJ0500 Rev.5.00 Page 726 of 1513
Aug 12, 2011
17.3.4 Mode switching between UARTC3, I
2
C00 and CAN0
In the V850ES/JG3-H and V850ES/JH3-H, UARTC3, I
2
C00, and CAN0 ( μ PD70F3770, 70F3771 only) share the same
pins and therefore cannot be used simultaneously. Set UARTC3 in advance, using the PMC3, PFC3 and PFCE3 registers,
before use.
Caution The transmit/receive operation of UARTC3, I
2
C00, and CAN0 ( μ PD70F3770, 70F3771 only) is not
guaranteed if these functions are switched during transmission or reception. Be sure to disable the
one that is not used.
Figure 17-5. UARTC3, I
2
C00, and CAN0 Mode Switch Settings
PMC3
After reset: 00H R/W Address: FFFFF446H
PMC37 PMC36 PMC35 PMC34 PMC33 PMC32 PMC31 PMC30
PFC3
After reset: 00H R/W Address: FFFFF466H
PFC37 PFC36 PFC35 PFC34 PFC33 PFC32 PFC31 PFC30
PFCE37 PFCE36 PFCE35 PFCE34 PFCE33 PFCE32 PFCE31 PFCE30
PFCE3
After reset: 00H R/W Address: FFFFF706H
Port I/O mode
TXDC3 (UARTC3)
SCL00 (I
2
C00)
CTXD0 (CAN0)
Note
PMC36
0
1
1
1
Operation mode
PFCE36
×
0
0
1
PFC36
×
0
1
0
Port I/O mode
RXDC3 (UARTC3)
SDA00 (I
2
C00)
CRXD0 (CAN0)
Note
PMC37
0
1
1
1
Operation mode
PFCE37
×
0
0
1
PFC37
×
0
1
0
Note μ PD70F3770, 70F3771 only
Remark × = don’t care