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Figure 3-2.
Target connector
RESET_OUT
RxD
CLK
FLMD1
RESET_IN
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. Read the serial interface
pin names on the target device side as those for flash programming supported by the target device.
2. This pin may be used to supply an external clock during flash programming (4, 8 or 16 MHz).
connection, refer to the user's manual for the target device.
3. The alternate function of this pin can be used because this pin changes to input (unused) when debugging.
In MINICUBE2, it is pulled down at 100 kΩ.
4. This connection is designed assuming that the RESET signal is output from the N-ch open-drain buffer
(output resistance: 100Ω or less).
5. The circuit enclosed by a dashed line is not required when only flash programming is performed.
6. The circuit enclosed by a dashed line is designed for flash self programming, which controls the FLMD0
pin via ports.
performed, a pull-down resistance for the FLMD0 pin can be within 1 to 10 kΩ.
7. This is for pin processing when not used as a device.
To change this value to another resistance value, see APPENDIX A EQUIVALENT CIRCUIT.
CHAPTER
3
HOW TO USE MINICUBE2 WITH V850 MICROCONTROLLER
Recommended Circuit Connection When UART Is Used for Communication Interface
EV
DD
1
GND
2
3
Note 1
4
V
DD
5
Note 1
TxD
6
6
R.F.U.
7
R.F.U.
8
R.F.U.
9
Note 2
10
R.F.U.
11
R.F.U.
12
Note 3
13
R.F.U.
14
FLMD0
15
Note 4
Note 5
16
R.F.U.
10kΩ
Use the port for inputting or outputting the high level.
EV
DD
Note 7
3k to 10kΩ
Note 7
1k to 10kΩ
1k to
10kΩ
EV
Note 7
DD
10kΩ
1kΩ
For details, refer to 3.1.3
User's Manual
U18371EJ5V0UM
EV
DD
Target device
GND
_RESET
TxD
EV
DD
RxD
X1
X2
FLMD1
FLMD0
Note 6
100Ω
PortX
Reset connector
RESET signal
Connection of reset pin.
When flash self programming is not
Clock
circuit
For the
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