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4.1 V
of Target System
DD
(1) V
in the target system is used to operate the circuit in the emulator.
DD
(2) When JP2 is set as "1 and 2 open" and "3 and 4 shorted", the evaluation chip in the emulator operates on V
from the target system.
(3) When JP2 is set as "1 and 2 open" and "3 and 4 open", the emulator recognizes the target system power is off
and operates with the 3.3 V power supply.
Target system
4.2 X1 Signal
The input signal (X1 signal) from the target system is delayed (for t
through VHC157 before it is input to the I/O chip of the emulator. The input voltage becomes V
V
= 0.99 V (MAX.). The input current becomes I
IL
32
CHAPTER 4
Figure 4-1. Schematic Diagram of Power Supply Flow
IE-703116-MC-EM1
I/O chip
CV
DD
Relay
V
DD
JP2
2
4
1
3
= ±1.0 µ A (MAX.).
IN
User's Manual U14700EJ2V0UM
CAUTIONS
IE-V850E-MC
EVA chip
Power supply
circuit
JP2
4
2
3
1
= t
= 13.2 ns (MAX.)) because it passes
pLH
pHL
DD
= 2.31 V (MIN.) and
IH
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