RL78/G13 CHAPTER 4 PORT FUNCTIONS
R01UH0146EJ0100 Rev.1.00 173
Sep 22, 2011
Figure 4-5. Block Diagram of P04
P04/SCK10/SCL10
WR
PU
RD
WR
PORT
PU04
EVDD
P-ch
PU0
P0
WRPM
PM0
POM04
POM0
WRPOM
PM04
CMOS
TTL
PIM0
PIM04
WRPIM
Output latch
(P04)
Selector
Alternate
function
Alternate
function
Internal bus
P0: Port register 0
PU0: Pull-up resistor option register 0
PM0: Port mode register 0
PIM0: Port input mode register 0
POM0: Port output mode register 0
RD: Read signal
WR××: Write signal