NEC mPD789026 Subseries User Manual page 75

WR
PUO
RD
WR
PORT
Output Latch
WR
PM
PUO : Pull-up resistor option register
PM : Port mode register
RD : Port 2 read signal
WR : Port 2 write signal
CHAPTER 4 PORT FUNCTIONS
Figure 4-6. Block Diagram of P22
PUO2
Alternate
Function
(P22)
PM22
User's Manual U11919EJ3V0UM00
V
DD0
P-ch
P22/RxD/SI0
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