External Trigger - NEC IE-789801-NS-EM1 User Manual

3.4 External Trigger

To set up an external trigger, connect it to the IE-789801-NS-EM1's check pins EXTOUT and EXTIN as shown
below.
See the IE-78K0S-NS User's Manual (U13549E) or IE-78K0S-NS-A User's Manual (U15207E) for pin
characteristics, and the ID78K0-NS, ID78K0S-NS Integrated Debugger Ver. 2.20 or Later Operation User's
Manual (Windows Based) (U14910E) for usage methods.
(1) EXTOUT
Output a low level from the EXTOUT pin on the IE-789801-NS-EM1 for 1.3 µ s upon the occurrence of a break
event.
Caution Connect a pull-up resistor on the target system since this is an open-drain output.
(2) EXTIN
An event signal can be input from the EXTIN pin on the IE-789801-NS-EM1. Use a high-level pulse signal of 2
CPU operation clocks or more for the event signal.
IE-789801-NS-EM1
LED1
30
CHAPTER 3 INSTALLATION
Figure 3-10. External Trigger Input Position
CN2
CN1
User's Manual U13390EJ2V0UM
G-789801 EM1 board
X1
TM1
EXTOUT
External trigger
EXTIN