CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U16846EJ1V0UD
72
Figure 4-8. Block Diagram of P13
P13/TxD6
WR
PU
RD
WR
PORT
WR
PM
PU13
Output latch
(P13)
PM13
PU1
PM1
Alternate
function
V
DD
P-ch
Internal bus
Selector
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
RD: Read
signal
WR
××
: Write
signal