Nu-Link2-Pro Debugger and Programmer
Mar. 13, 2020
Page
23
of 77
Rev 1.00
NU
-LINK
2
-P
RO
D
E
B
UG
G
E
R
a
nd
P
RO
G
RA
MM
E
R U
S
E
R
M
A
NUA
L
Ma
k
er Nu
-m
be
d
NUC
47
2
Us
er Man
ua
l
VSS (GND)
CON6.20
VSS (GND)
Note:
The target board power and signal only support 3.3 V at Nu-Link2-Pro Bridge interface.
Table 3.3-4 Bridge
Interface
Corresponding Pin for SPI
RS-485 Connection
The Nu-Link2-Pro provides one channel RS-485 function for monitor mode receive information, and
print out information by UART. The RS-485 connection pins are VCC33(CON6.14 and CON6.16),
VSS(CON6.18 and CON6.20), RS485A(CON6.9) and RS485B(CON6.10). Figure 3.3-4 presents how
to connect the target board to use RS-485 function and Table 3.3-5 shows the pin corresponding to the
target board.
Bridge
Micro USB
SCL
SS
TXD
RS485A
MOSI
CNAH
GPIO1
ADC
GPIO0
PWM
SDA
CLK
RXD
RS485B
MISO
CNAL
VSS(GND)
VDD33
VSS(GND)
VDD33
NuMicro® Family
Target Board
Figure 3.3-4 Bridge
Interface
Connection Diagram for RS-485
Pin Name
Pin Number
Pin Corresponding to the Target Board
RS485A
[1]
CON6.9
RS485A
[2]
RS485B
[1]
CON6.10
RS485B
[2]
VCC33
CON6.14
VCC
[2]
VCC33
CON6.16
VCC
[2]