CHAPTER 5 HOW TO USE MINICUBE2 WITH 78K0S MICROCONTROLLER
User’s Manual U18371EJ1V0UM
103
5.1.2 Circuit connection example
Refer to Figure 5-2 and design an appropriate circuit.
Caution The constants described in the circuit connection example are reference values. If you perform
flash programming aiming at mass production, thoroughly evaluate whether the specifications of
the target device are satisfied.
Figure 5-2. Recommended Circuit Connection
Reset circuit
Target connector
V
DD
V
DD
GND
RESET_OUT
V
DD
R.F.U.
R.F.U.
H/S
Note 4
R.F.U.
R.F.U.
INTP
R.F.U.
RESET_IN
R.F.U.
1
2
3
4
5
6
7
8
9
11
12
14
16
10
13
15
V
DD
GND
Target device
Note 3
Note 3
RESET signal
DATA
CLK
CLK
DATA
_RESET
Note 1
X2
Note 2
X1
Note 2
INTP
Note 5
V
DD
3 to 10 k
Ω
V
DD
1 k
Ω
10 k
Ω
1 to 10 k
Ω
V
DD
1 k
Ω
Reset circuit
Target connector
V
DD
V
DD
GND
RESET_OUT
V
DD
R.F.U.
R.F.U.
H/S
Note 4
R.F.U.
R.F.U.
INTP
R.F.U.
RESET_IN
R.F.U.
1
2
3
4
5
6
7
8
9
11
12
14
16
10
13
15
V
DD
GND
Target device
Note 3
Note 3
RESET signal
DATA
CLK
CLK
DATA
_RESET
Note 1
X2
Note 2
X1
Note 2
INTP
Note 5
V
DD
3 to 10 k
Ω
V
DD
1 k
Ω
10 k
Ω
1 to 10 k
Ω
V
DD
1 k
Ω
Notes 1.
The RESET pin is used to download the monitor program at debugger startup or to implement
forced reset. Therefore, a pin that alternately functions as the RESET pin cannot be used. For
reset pin connection, refer to
5.1.3 Connection of reset pin
.
2.
This is the pin connection when the X1 and X2 pins are not used in the target system. When
using the X1 and X2 pins, refer to
5.1.5 Connection of X1 and X2 pins
.
3.
No problem will occur if the dashed line portions are connected.
4.
This pin is connected to enhance the accuracy of time measurement between run and break during
debugging. Debugging is possible even if this pin is left open, but measurement error occurs in
several ms units.
5.
The INTP pin is used for communication between MINICUBE2 and the target device during
debugging. When debugging is performed with MINICUBE2, therefore, the INTP pin and its
alternate-function pin cannot be used. For INTP pin connection, refer to
5.1.4 Connection of
INTP pin
.
For details on the INTP pin to be used, refer to the document indicated in
1. 3 Supported Devices
.