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CHAPTER 5 PORT FUNCTIONS
User’s Manual U12697EJ3V0UM
Figure 5-6. Block Diagram of P25
P-ch
P-ch
N-ch
WR
PM
WR
PF
RD
WR
PU
V
DD
V
DD
Selector
PU25
PF25
PM25
Internal bus
P25/SI0/SDA0
Note
WR
PORT
Output latch
(P25)
Alternate
function
Note
The SDA0 pin applies only to the
µ
PD784225Y Subseries.
PU: Pull-up resistor option register
PF:
Port function control register
PM: Port mode register
RD: Port 2 read signal
WR: Port 2 write signal