
RL78/G13
CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00
182
Sep 22, 2011
Figure 4-12. Block Diagram of P15
P15/SCK20/SCL20
WRPU
RD
WRPORT
PU15
EVDD
P-ch
PU1
P1
WRPM
PM1
POM15
POM1
WRPOM
PM15
CMOS
TTL
PIM1
PIM15
WRPIM
Output latch
(P15)
Selector
Alternate
function
Alternate
function
Internal
bus
P1:
Port register 1
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
PIM1:
Port input mode register 1
POM1: Port output mode register 1
RD:
Read signal
WR
××: Write signal