NEC 78K0 Series User Manual page 115
8-bit single-chip microcontrollers
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WR
PU
PU3
PU33
Alternate
function
RD
WR
PORT
P3
Output latch
(P33)
WR
PM
PM3
PM33
Alternate
function
P3:
Port register 3
PU3:
Pull-up resistor option register 3
PM3:
Port mode register 3
RD:
Read signal
WR××: Write signal
CHAPTER 5 PORT FUNCTIONS
Figure 5-15. Block Diagram of P33
Preliminary User's Manual U17260EJ3V1UD
EV
DD
P-ch
P33/INTP4/TI51/TO51
115
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