Datasheet

CHAPTER 4 PORT FUNCTIONS
User’s Manual U18172EJ3V0UD
62
Figure 4-6. Block Diagram of P22 ( μ PD78F950x)
P22
WR
PU
RD
PU22
WR PM
PM22
V DD
P-ch
PU2
PM2
WR PORT
P2
Internal bus
Output latch
(P22)
Selector
P2: Port register 2
PU2: Pull-up resistor option register 2
PM2: Port mode register 2
RD: Read signal
WR××: Write signal
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