UPD70F3786GJ-GAE-AX Datasheet, PDF (953/1817 Pages) Renesas Technology Corp – RENESAS MCU V850ES/Jx3-E Microcontrollers

V850ES/JH3-E, V850ES/JJ3-E
CHAPTER 20 I²C BUS
20.3.3 Mode switching between I²C02, UARTC2, and CAN0
In the V850ES/JH3-E and V850ES/JJ3-E, I²C02, UARTC2, and CAN0 (μPD70F3783 and 70F3786 only) share the
same pin and therefore cannot be used simultaneously. Switching among I²C02, UARTC2, and CAN0 must be set in
advance, using the PMC3, PFC3, and PFCE3 registers.
Caution
The transmit/receive operation of I²C02, UARTC2, and CAN0 (μPD70F3783 and 70F3786 only) is not
guaranteed if these functions are switched during transmission or reception. Be sure to disable the
one that is not used.
Figure 20-5. I²C02, UARTC2, and CAN0 Mode Switch Settings
After reset: 00H R/W Address: FFFFF446H
PMC3 PMC37 PMC36 PMC35 PMC34 PMC33 PMC32 PMC31 PMC30
After reset: 00H R/W Address: FFFFF466H
PFC3 PFC37 PFC36 PFC35 PFC34 PFC33 PFC32 PFC31 PFC30
After reset: 00H R/W Address: FFFFF706H
PFCE3 PFCE37^Note PFCE36^Note PFCE35 PFCE34 PFCE33 PFCE32 PFCE31 PFCE30
PMC37 PFCE37^Note PFC37
0
×
×
1
0
0
1
0
1
1
1
0
Operation mode
Port I/O mode
RXDC2 (UARTC2)
SCL02 (I²C02)
CRXD0 (CAN0)^Note
PMC36 PFCE36^Note PFC36
0
×
×
1
0
0
1
0
1
1
1
0
Operation mode
Port I/O mode
TXDC2 (UARTC2)
SDA02 (I²C02)
CTXD0 (CAN0)^Note
Remark × = don’t care
R01UH0290EJ0300 Rev.3.00
Sep 19, 2011
Page 953 of 1817