EVK-ANNA-B112 - User Guide
UBX-18018539 - R01
Product description
Page 7 of 29
1.5
Connectors
Figure 5 shows the available connectors on the EVK-ANNA-B112 and their layout. Table 1 describes
the connectors and their uses in detail.
Figure 5: Available connectors and their pinout
Connector
annotation
Function
Description
J5
Power supply
2.1 mm power jack, the center pin is the positive terminal. 5 – 12 V input.
J17
Power supply
Pin header that can be used to connect external power supplies. 5 – 12 V input.
BT1
Battery holder
CR2032 coin cell battery holder. CR2032 usually has a 3 V potential when fully
charged.
J11
NFC antenna
connector
Pin header that connects to the u-blox NFC antenna included in the kit.
J10
2.4 GHz RF antenna
connector
U.FL coaxial connector that can be used to connect antennas or RF equipment. This
connector is included only in the EVK-ANNA-B112U.
J12
Cortex Debug
connector
10-pin, 50 mil pitch connector that can be used to connect external debuggers to
the ANNA-B112 module. The ANNA-B112 modules support Serial Wire debug (SWD)
and Serial Wire Viewer, but not JTAG debug.
J21
Cortex Debug+ETM
connector
20-pin, 50 mil pitch connector. This extended connector has the same features as
J12, but also allows for instruction trace operations via the Embedded Trace
Macrocell (ETM) of the Cortex
®
-M4F microcontroller inside the ANNA-B112 module.
This requires a special external debugger. Note that the 50 mil pitch pin header is
not soldered onto the evaluation board by default.
J8
Power supply, COM
port and debug USB
The main USB connector that is used to program, debug, and communicate with the
ANNA-B112 module. It can also be used to power the entire board.
Table 1: EVK-ANNA-B112 connector description
1.6
Powering options
Power can be supplied to the board in one of the following ways:
•
Via the USB connector, J8
•
Using the power jack, J5
•
Using the Arduino interface VIN pin
•
Using the pin header J17
