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CHAPTER 4 PORT FUNCTIONS
User’s Manual U15798EJ2V0UD
Figure 4-7. Block Diagram of P22, P25
PU: Pull-up resistor option register
PM: Port mode register
RD: Port 2 read signal
WR: Port 2 write signal
Internal bus
P22/SCK3,
P25/SCK1
WR
PUB2
RD
WR
PORT
WR
PM
PU22, PU25
Alternate
function
Output latch
(P22, P25)
PM22, PM25
Alternate
function
V
DD
P-ch
Selector