
CHAPTER 4 PORT FUNCTIONS
User’s Manual U17894EJ9V0UD
110
Figure 4-4. Block Diagram of P02
P02/SO10/TxD1
WRPU
RD
WRPORT
WRPM
PU02
PM02
EVDD0, EVDD1
P-ch
PU0
PM0
P0
POM02
POM0
WRPOM
Selector
Internal
bus
Output latch
(P02)
Alternate
function
P0:
Port register 0
PU0:
Pull-up resistor option register 0
PM0:
Port mode register 0
POM0: Port output mode register 0
RD:
Read signal
WR
××: Write signal