CHAPTER 4 PORT FUNCTIONS
User’s Manual U16898EJ3V0UD
52
Figure 4-4. Block Diagram of P31
P31/TI010/TO00/INTP2
WR
PU
RD
WR
PORT
WR
PM
PU31
Output latch
(P31)
PM31
Alternate
function
V
DD
P-ch
PU3
PM3
Internal bus
Selector
Alternate
function
P3
P3:
Port register 3
PU3:
Pull-up resistor option register 3
PM3: Port mode register 3
RD:
Read signal
WR
××
: Write signal