CHAPTER 4 CAUTIONS
User’s Manual U14700EJ2V0UM
33
Figure 4-2. Diagram of X1 Signal Flow
4.3
Pin Termination During Operation of Emulator as Stand-Alone Unit
(1) MODE0 to MODE2 pins
When the emulator operates as a stand-alone unit, the operation mode of the emulator is single-chip mode 0.
The MODE0 to MODE2 pins are connected as follows.
•
MODE0: Connected to V
SS
via a resistor (33 k
Ω
) (pull-down).
•
MODE1: Connected to V
DD
via a resistor (33 k
Ω
) (pull-up).
•
MODE2: Connected to V
SS
via a resistor (33 k
Ω
) (pull-down).
(2) RESET pin
This pin is connected to V
DD
via a resistor (33 k
Ω
) (Pull-up).
(3) CKSEL pin
Pull-up/pull-down switching is possible with SW1.
Figure 4-3. Circuit Diagram of CKSEL Pin
VHCT541
I/O chip
SW1
CKSEL
CKSEL pin
33 k
Ω
33 k
Ω
V
DD
IE-703116-MC-EM1
X1 pin
Target system
X1 signal
VHC157
I/O chip
