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CHAPTER 4 PORT FUNCTIONS
User’s Manual U15104EJ2V0UD
4.2.2 Port 1
Port 1 is a 6-bit input port.
Alternate functions include A/D converter analog input.
Figure 4-4 shows the block diagram of port 1.
Figure 4-4. Block Diagram of P10 to P15
RD : Port 1 read signal
Figure 4-3. Block Diagram of P05 and P06
PM:
Port mode register
RD:
Port 0 read signal
WR: Port 0 write signal
WR
PM
WR
PORT
RD
P05, P06
Selector
Output latch
(P05, P06)
PM05, PM06
Internal bus
V
REF
RD
A/D converter
P10/ANI0 to P15/ANI5
+
_
Internal bus
