Figure 6-2. Block Diagram of P00 and P07
RD
Figure 6-3. Block Diagram of P01 to P06
WR
PUO
PUO0
RD
WR
PORT
Output Latch
(P01 to P06)
WR
PM
PM01 to PM06
PUO : Pull-up resistor option register
PM : Port mode register
RD
: Port 0 read signal
WR : Port 0 write signal
CHAPTER 6 PORT FUNCTIONS
Selector
P00/INTP0/TI00,
P07/XT1
V
DD
P-ch
P01/INTP1/TI01,
P02/INTP2 to
P06/INTP6
137