CHAPTER 14 PORT FUNCTIONS
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User’s Manual U14492EJ3V0UD
14.3 Pin Functions of Each Port
14.3.1 Port 0
Port 0 is an 8-bit input dedicated port in which all pins are fixed for input.
7
P07
P0
6
P06
5
P05
4
P04
3
P03
2
P02
1
P01
0
P00
Address
FFFFF400H
Initial value
Undefined
Besides functioning as an input port, in control mode, it also can operate as the real-time pulse unit (RPU) output
stop signal input, external interrupt request input, and A/D converter (ADC) external trigger input.
Although this port also serves as NMI, ESO0/INTP0, ESO1/INTP1, ADTRG0/INTP2, ADTRG1/INTP3, and INTP4
to INTP6, NMI, ESO0/INTP0, ESO1/INTP1, ADTRG0/INTP2, ADTRG1/INTP3, and INTP4 to INTP6 cannot be
switched with input port. The status of each pin is read by reading the port.
(1) Operation in control mode
Port
Alternate Pin Name
Remarks
Block Type
P00
NMI
Non-maskable interrupt request input
P01
ESO0/INTP0
P02
ESO1/INTP1
Real-time pulse unit (RPU) output stop signal input or
external interrupt request input
P03
ADTRG0/INTP2
P04
ADTRG1/INTP3
A/D converter (ADC) external trigger input or external
interrupt request input
Port 0
P05 to P07
INTP4 to INTP6
External interrupt request input
F
Содержание V850E/IA1 mPD703116
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