NEC 78K0 Series User Manual page 123

5.2.10 Port 13
Port 13 is a 1-bit output-only port.
Figure 5-24 shows a block diagram of port 13.
RD
WR
PORT
P13: Port register 13
RD: Read signal
WR××: Write signal
Remark When reset is effected, P130 outputs a low level. If P130 is set to output a high level before reset is
effected, the output signal of P130 can be dummy-output as the CPU reset signal.
CHAPTER 5 PORT FUNCTIONS
Figure 5-24. Block Diagram of P130
P13
Output latch
(P130)
Reset signal
P130
Preliminary User's Manual U17260EJ3V1UD
Set by software
P130
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