CHAPTER 4 HOW TO USE MINICUBE2 WITH 78K0 MICROCONTROLLER
User’s Manual U18371EJ1V0UM
55
Figure 4-3. When Both Debugging and Programming Are Performed
(with X1/X2 Communication, Only Internal High-Speed Oscillator Is Used)
1
2
3
4
5
6
7
8
9
10
GND
RESET_OUT
RxD
Note 1
V
DD
TxD
Note 1
R.F.U.
R.F.U.
R.F.U.
CLK
Note 2
R.F.U.
_RESET
TxD
V
DD
RxD
GND
X1
OCD1A
Note 4
10 k
Ω
RESET signal
Note 3
11
12
13
14
15
16
R.F.U.
R.F.U.
DATA
FLMD0
RESET_IN
Note 5
R.F.U.
FLMD0
X2
8
10 k
Ω
Port X
1 k
Ω
Target connector
Target device
Note 6
Reset connector
1 k
Ω
3 to 10 k
Ω
1 to 10 k
Ω
1 to
10 k
Ω
JP1
1
2
V
DD
V
DD
V
DD
V
DD
JP2
2
1
Note 5
1 to
10 k
Ω
1
2
3
4
5
6
7
8
9
10
GND
RESET_OUT
RxD
Note 1
V
DD
TxD
Note 1
R.F.U.
R.F.U.
R.F.U.
CLK
Note 2
R.F.U.
_RESET
TxD
V
DD
RxD
GND
X1
OCD1A
Note 4
10 k
Ω
RESET signal
Note 3
11
12
13
14
15
16
R.F.U.
R.F.U.
DATA
FLMD0
RESET_IN
Note 5
R.F.U.
FLMD0
X2
8
10 k
Ω
Port X
1 k
Ω
Target connector
Target device
Note 6
Reset connector
1 k
Ω
3 to 10 k
Ω
1 to 10 k
Ω
1 to
10 k
Ω
JP1
1
2
V
DD
V
DD
V
DD
V
DD
JP2
2
1
Note 5
1 to
10 k
Ω
Notes 1.
Connect TxD (transmit side) of the target device to RxD (receive side) of the target connector, and TxD
(transmit side) of the target connector to RxD (receive side) of the target device.
2.
During debugging, the clock mounted on the 78K0-OCD board can be supplied. If no clock is mounted, a
clock of 4, 8, or 16 MHz can be supplied. During flash programming, only a clock of 4, 8, or 16 MHz can
be supplied.
3.
For debugging, short 1-2 of JP1 and 1-2 of JP2. For flash programming, short pin 2 of JP1 and JP2 only.
For the target device operation (without MINICUBE2 connected), leave JP1 and JP2 open.
4.
OCD1A may be a different name, such as P31, depending on the device used. For details, refer to the
user
'
s manual for the target device.
5.
This connection is designed assuming that the RESET signal is output from the N-ch open-drain buffer
(output resistance: 100
Ω
or less). For details, refer to
4.1.3 Connection of reset pin
.
6.
The circuit enclosed by a dashed line is designed for flash self programming, which controls the FLMD0 pin
via ports. Use the port for inputting or outputting the high level. When flash self programming is not
performed, a pull-down resistance for the FLMD0 pin can be within 1 to 10k
Ω
.
