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CHAPTER 5 PORT FUNCTIONS
User’s Manual U15109EJ3V0UD
178
(3) Block diagram (port 12)
Figure 5-15. Block Diagram of P120 to P125
RD
WR
PORT
WR
PM
Output latch
(P12n)
PM12n
PM12
PAC12n
PAC2
Selector
Alternate
function
Selector
Internal bus
Remarks 1.
PM12: Port 12 mode register
RD:
Port 12 read signal
WR:
Port 12 write signal
PAC2: Port alternate-function control register 2
2.
n = 0 to 5