
CHAPTER 4 PORT FUNCTIONS
User’s Manual U17894EJ9V0UD
119
Figure 4-12. Block Diagram of P16 and P17
P16/TI01/TO01/INTP5/EX30,
P17/TI02/TO02/EX31
WRPU
RD
WRPORT
WRPM
PU16, PU17
PM16, PM17
EVDD0, EVDD1
P-ch
PM1
PU1
P1
Alternate
function
Output latch
(P16, P17)
Selector
Internal
bus
Alternate
function
P1:
Port register 1
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
RD:
Read signal
WR
××: Write signal