
RL78/G13
CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00
179
Sep 22, 2011
Figure 4-9. Block Diagram of P12
P12/SO00/
TxD0/TOOLTxD
WRPU
WRPORT
WRPM
PU12
PM12
EVDD
P-ch
PU1
PM1
P1
POM12
POM1
WRPOM
Output latch
(P12)
Selector
Alternate
function
Internal
bus
RD
P1:
Port register 1
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
POM1: Port output mode register 1
RD:
Read signal
WR
××: Write signal