Single-Chip Microcontrollers User's Manual

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