NEC uPD780328 Subseries - Manual (Page 36)

CHAPTER 3 INSTALLATION
User’s Manual U16214EJ1V0UM
36
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
Voltage Supplied to TP1 Maximum Current Consumption of TP1
1.8 to 5.5 V 300 mA
Figure 3-18. Main Board of IE-78K0-NS or IE-78K0-NS-A (G-780009 Board)
GND V CC
Dedicated bus interface
connector (HOST-I/F)
TP1