CHAPTER 3 INSTALLATION
User’s Manual U16290EJ1V0UM
34
3.6 LCD
Emulation
(1) LCD
emulation
Using the LCD emulation circuit, the VLC and CAP signals can be switched to the IE system side or target
system side through switch activation, and an external boost circuit can also be used. The circuit configuration
shown in Figure 3-18 is used on the IE system side.
Figure 3-18. LCD Emulation Circuit
10 k
Ω
(10 k
Ω
)
4.7 k
Ω
VR1
5 V
External boost circuit
CP57 (check pin)
VLC3
SW1
SW5
SW2
SW4
SW3
SW6
ZD
I/O EVA chip
V
LC0
to V
LC4
CAP0 to CAP3
Target system
V
LC0
to V
LC4
CAP0 to CAP3
Connect to GND via a capacitor (0.1 F).
Connect CAP0 to CAP1, CAP1 to CAP2, and
CAP2 to CAP3 with a capacitor (0.1 F).
IE system
V
LC0
V
LC1
V
LC2
V
LC3
V
LC4
CAP0
CAP1
CAP2
CAP3
µ
µ
Table 3-6. LCD Switch Settings
Switch (Signal Name)
Setting
Description
ICE side (initial setting)
Connects IE system's internal circuit.
SW3 (V
LC0
, V
LC1
)
USR side
Connects to target system via emulation probe.
ICE side (initial setting)
Connects IE system's internal circuit.
SW4 (V
LC2
, V
LC3
)
USR side
Connects to target system via emulation probe.
ICE side (initial setting)
Connects IE system's internal circuit.
SW2 (V
LC4
)
USR side
Connects to target system via emulation probe.
ICE side (initial setting)
Connects IE system's internal circuit.
SW5 (CAP0, CAP1)
USR side
Connects to target system via emulation probe.
ICE side (initial setting)
Connects IE system's internal circuit.
SW6 (CAP2, CAP3)
USR side
Connects to target system via emulation probe.
