Nu-Link2-Pro Debugger and Programmer
Mar. 13, 2020
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SWD Interface Pin Definition and Function Connection
Table 3.2-1 shows SWD interface pin definition and description. The Nu-Link2-Pro provides a SWD
interface connector with a 100-mil 10-pin cable. The SWD supports ICE Programming, Virtual COM and
automatic IC Programming. The following sections will introduce the definition of the SWD interface pin
and the connection of each function.
Pin Name
Pin Number
Pin Description
VCC
CON4.1
Target Board voltage supply. The Nu-Link2-Pro supports the wide
voltage programming function, by ICP tool can adjust the SWD port
voltage as 1.8V, 3.3V, 2.5V or 5.0V. For detailed adjustment method,
please refer to section 4.3.
BUSY
CON4.2
“BUSY” is Control Bus signals for IC Programmer. For details,
please refer to section 6.3.
ICE_DAT
CON4.3
Serial Wired Debugger Data pin
START
CON4.4
“START” is Control Bus signals for IC Programmer. For details,
please refer to section 6.3.
ICE_CLK
CON4.5
Serial Wired Debugger Clock pin
NC
CON4.6
NC
/RESET
CON4.7
IC reset pin, Nu-Link2-Pro will automatically reset the target IC
during the programming process.
PASS/TX
CON4.8
“PASS” is Control Bus signals for IC Programmer. For details,
please refer to section 6.3.
GND
CON4.9
Ground
FAIL/RX
CON4.10
“FAIL” is Control Bus signals for IC Programmer. For details,
please refer to section 6.3.
Table 3.2-1 SWD
Interface
Pin Definition and Description
ICE Programming Connection
The Nu-Link2-Pro provides ICE function to Programming and debugging on PC. The ICE connection
pins are VCC(CON4.1), ICE_DAT(CON4.3), ICE_CLK(CON4.5), /RESET(CON4.7) and VSS(CON4.9).
Figure 3.2-1
presents how to connect the target board to use ICE and
shows the pin
corresponding to the target board.