CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U19014EJ1V0UD
66
Figure 4-6. Block Diagram of P12 and P16
P12/SO10
P16/TOH1
WR
PU
RD
WR
PORT
WR
PM
PU12, PU16
Output latch
(P12, P16)
PM12, PM16
Alternate
function
EV
DD
P-ch
Selector
Internal bus
PU1
PM1
P1
P1:
Port register 1
PU1:
Pull-up resistor option register 1
PM1:
Port mode register 1
RD: Read
signal
WR
××
: Write
signal
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