CHAPTER 4 PORT FUNCTIONS
User’s Manual U15075EJ2V1UD
85
Figure 4-8. Block Diagram of P23
Internal bus
V
DD
P-ch
P23/ASCK20/
SCK20
WR
PUB2
RD
WR
PORT
WR
PM
PUB23
Alternate
function
Output latch
(P23)
PM23
Alternate
function
Selector
PUB2: Pull-up resistor option register B2
PM:
Port mode register
RD:
Port 2 read signal
WR:
Port 2 write signal
Содержание U789436 Series
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