20-pin 2.54mm Renesas V850
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This debug adapter is used to connect the iC5000 and the iC5700 BlueBox to Renesas (former NEC) V850 based target featuring a 20-pin 2.54 mm pitch target debug connector with the V850 pinout.
The debug adapter connects to the 25 cm 40-pin ribbon cable coming from the BlueBox and to the target debug connector on the other side.
The following pinout is valid on the target side:
Signal Direction |
Signal Description |
Signal |
Pin |
Pin |
Signal |
Signal Description |
Signal Direction |
|---|---|---|---|---|---|---|---|
|
Ground |
GND |
1 |
2 |
TCK |
JTAG |
O |
|
Ground |
GND |
3 |
4 |
TMS |
JTAG |
O |
|
Ground |
GND |
5 |
6 |
TDI |
JTAG |
O |
|
Ground |
GND |
7 |
8 |
nTRST |
JTAG |
O |
|
Ground |
GND |
9 |
10 |
NC |
Not Connected |
|
|
Ground |
GND |
11 |
12 |
nRESET |
CPU Reset |
I/O |
|
Ground |
GND |
13 |
14 |
FLMD0 |
Flash Mode |
O |
|
Ground |
GND |
15 |
16 |
nRDY |
Synchronization |
I |
|
Ground |
GND |
17 |
18 |
TDO |
JTAG |
I |
|
Ground |
GND |
19 |
20 |
Vref |
Reference Voltage |
I |
20-pin V850 target pinout
Signal Direction is described from the BlueBox perspective.
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When initially connecting the BlueBox to a target, ensure the debug adapter pinout matches the Target connector to avoid potential hardware failure. |
20-pin 2.54mm V850 Debug Adapter features resettable fuses on all pins except for pin 16. These fuses protect debug signals against overcurrent and cycle back to a conductive state after the excessive current fades away. A signal on pin 16 is protected via 100 ohm serial resistor.
The debug adapter connects to the target via a 20-pin 2.54 mm adapter, Yamaichi FAS-2001-2101-2-OBF. A target should feature a matching part, for example WÜRTH ELEKTRONIK 61202021621.
