Port 13 - NEC mPD178054 Series User Manual

4.2.9 Port 13

Port 13 is a 3-bit N-ch open-drain output port with an output latch.
The pins of this port are also used as timer output pins.
Reset input sets port 13 in the general-purpose output port mode.
The port 13 block diagram is shown in Figure 4-19.
RD
WR
PORT
RD: Port 13 read signal
WR: Port 13 write signal
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CHAPTER 4 PORT FUNCTIONS
Figure 4-19. Block Diagram of P130 to P132
Output latch
(P130 to P132)
Alternate function
User's Manual U15104EJ2V0UD
P130/TO50
P131/TO51
P132/TO52