J2 Fins - Arduino Nicla Voice Reference Manual

6.3 J2 Fins

Between the main pins, there are smaller contacts (fins) that provide access to debugging capabilities. These test
points can easily be accessed by inserting the board in a double row 1.27 mm/50 mil pitch male header.
Pin Function
P1 BMI_SWDIO
P2 BMI_SWDCLK
P3 ANNA_SWDIO
P4 ANNA_SWDCLK
P5 RESET
P6 SAMD11_SWDIO
P7 +1.8 V
P8 SAMD11_SWDCLK
Note: All JTAG logic levels operate at 1.8 V apart from the SAMD11 pins (P6 and P8) which are 3.3 V. All these JTAG
pins are 1.8 V only and don't scale with VDDIO.
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P8
P7
P6
P5
P4
P3
P2
P1
BOTTOM FINS
Nicla Family Bottom Fins
Type Description
Digital BMI270 JTAG Serial Wire Debug Data
Digital BMI270 JTAG Serial Wire Debug Clock
Digital ANNA JTAG Serial Wire Debug Data
Digital ANNA JTAG Serial Wire Debug Clock
Digital Reset Pin
Digital SAMD11 JTAG Serial Wire Debug Data
Power +1.8 V Voltage Rail
Digital SAMD11 JTAG Serial Wire Debug Clock
Arduino® Nicla Voice
Arduino® Nicla Voice
Modified: 05/01/2023