
RL78/G13
CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00
189
Sep 22, 2011
Figure 4-17. Block Diagram of P31
P31/TI03/TO03/INTP4
WRPU
RD
WRPORT
WRPM
PU31
PM31
EVDD
P-ch
PU3
PM3
P3
Output latch
(P31)
Selector
Alternate
function
Alternate
function
Internal
bus
P3:
Port register 3
PU3:
Pull-up resistor option register 3
PM3:
Port mode register 3
RD:
Read signal
WR
××: Write signal