CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U16315EJ1V0UD
87
Figure 4-8. Block Diagram of P13
P13/TxD6
WR
PU
RD
WR
PORT
WR
PM
PU13
Output latch
(P13)
PM13
Alternate
function
EV
DD
P-ch
Internal bus
Selector
PU1:
Pull-up resistor option register 1
PM:
Port mode register
RD:
Port 1 read signal
WR:
Port 1 write signal