CHAPTER 4 HOW TO USE MINICUBE2 WITH 78K0 MICROCONTROLLER
User’s Manual U18371EJ1V0UM
63
Figure 4-11. When Only Programming Is Performed
Notes 1.
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
.
2.
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.
3.
When the input clock to the target device is generated on the target system, CLK does not need to be
connected. Please leave it open when no connection is made. When no input clock is generated, or the
dedicated program adapter (FA series) is used, CLK can be used as a pin to feed the external clock (4/8/16
MHz) to the target device. For the connection, refer to the user's manual for the target device.
4.
If FLMD1 pin is provided on the target device, the connection must be made. If FLMD1 pin is not provided
on the target device, leave it open.
1
2
3
4
5
6
7
8
9
10
GND
RESET_OUT
Note 1
V
DD
R.F.U.
R.F.U.
R.F.U.
CLK
Note 3
R.F.U.
GND
_RESET
TxD
V
DD
RxD
11
12
13
14
15
16
R.F.U.
FLMD1
Note 4
DATA
FLMD0
RESET_IN
R.F.U.
FLMD0
8
Target connector
Target device
RESET signal
Reset connector
10 k
Ω
1 k
Ω
1 to 10 k
Ω
3 to 10 k
Ω
FLMD1
V
DD
V
DD
V
DD
V
DD
RxD
Note 2
TxD
Note 2
1 to
10 k
Ω
1 to
10 k
Ω
1
2
3
4
5
6
7
8
9
10
GND
RESET_OUT
Note 1
V
DD
R.F.U.
R.F.U.
R.F.U.
CLK
Note 3
R.F.U.
GND
_RESET
TxD
V
DD
RxD
11
12
13
14
15
16
R.F.U.
FLMD1
Note 4
DATA
FLMD0
RESET_IN
R.F.U.
FLMD0
8
Target connector
Target device
RESET signal
Reset connector
10 k
Ω
1 k
Ω
1 to 10 k
Ω
3 to 10 k
Ω
FLMD1
V
DD
V
DD
V
DD
V
DD
RxD
Note 2
TxD
Note 2
1 to
10 k
Ω
1 to
10 k
Ω
