
CHAPTER 4 PORT FUNCTIONS
User’s Manual U17894EJ9V0UD
109
Figure 4-3. Block Diagram of P01
P01/TO00
WRPU
RD
WRPORT
WRPM
PU01
PM01
EVDD0, EVDD1
P-ch
PU0
PM0
P0
Selector
Alternate
function
Output latch
(P01)
Internal
bus
P0:
Port register 0
PU0:
Pull-up resistor option register 0
PM0:
Port mode register 0
RD:
Read signal
WR
××: Write signal