Low-Voltage Emulation Settings; Main Board Of Ie-78K0-Ns Or Ie-78K0-Ns-A (G-780009 Board) - NEC uPD780318 Subseries User Manual

3.7 Low-Voltage Emulation Settings

When the target system is operating on low voltage, supply the same supply voltage as the target system to the
TP1 terminal pin on the main board of the IE-78K0-NS or IE-78K0-NS-A (G-780009 Board) (this processing is not
necessary when the target system is operating at 5 V).
At that time, set the voltage supplied to the target system to between 1.8 and 5.5 V.
Caution When emulating at 4.5 V or lower, first start up at 5 V and then lower the target system voltage.
Table 3-6. Supply Voltage and Maximum Current Consumption During Low-Voltage Emulation
Figure 3-18. Main Board of IE-78K0-NS or IE-78K0-NS-A (G-780009 Board)
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CHAPTER 3 INSTALLATION
Voltage Supplied to TP1
1.8 to 5.5 V
Dedicated bus interface
connector (HOST-I/F)
User's Manual U16214EJ1V0UM
Maximum Current Consumption of TP1
300 mA
TP1
GND V
CC