119
CHAPTER 5 PORT FUNCTIONS
User’s Manual U12697EJ3V0UM
Figure 5-9. Block Diagram of P33 to P36
P-ch
WR
PM
WR
PORT
RD
WR
PU
V
DD
Selector
Alternate
function
PU33 to PU36
Output latch
(P33 to P36)
PM33 to PM36
Internal bus
P33/TI1,
P34/TI2,
P35/TI00,
P36/TI01
PU: Pull-up resistor option register
PM: Port mode register
RD: Port 3 read signal
WR: Port 3 write signal