CHAPTER 4 PORT FUNCTIONS
User’s Manual U16899EJ2V0UD
91
Figure 4-8. Block Diagram of P12 and P15
P12/SO10
P15/TOH0
WR
PU
RD
WR
PORT
WR
PM
PU12, PU15
Output latch
(P12, P15)
PM12, PM15
Alternate
function
EV
DD
P-ch
Selector
Internal bus
PU1
PM1
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
RD: Read
signal
WR
××
: Write
signal