UBX-21008123 - R02
Product description
Page 10 of 42
C1-Public
2.5
Connectors
Table 1 describes the available connectors of the EVK-ANNA-B4 shown in Figure 3.
Connector Function
Description
J5
Power supply
2.1 mm power jack. The center pin of the connector is the positive terminal. 5
– 12 V input.
J17
Power supply
Pin header for connecting 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. The
antenna can be mounted in either direction.
J10
2.4 GHz RF antenna connector
U.FL coaxial connector used to connect antennas or RF equipments. This
connector is only included in the EVK-ANNA-B402U/EVK-ANNA-B412U.
J12
Cortex Debug connector
10-pin, 50 mil pitch connector used to connect external debuggers to the
ANNA-B4 module. ANNA-B4 modules support Serial Wire debug (SWD) and
Serial Wire Viewer, but not JTAG debug.
J8
Power supply,
COM port and debug USB
The main USB connector used to program, debug, and communicate with the
ANNA module. It can also be used to power the entire board.
J6
Power supply and ANNA USB port Additional USB connector that connects directly to the ANNA-B4 USB
interface. The connector can also be used to power the entire board.
Table 1: EVK-ANNA-B4 connector description
Figure 3: Available connectors, pinout and designation
J5
2 1
1
4
GND
VIN
5 - 12 V
N
FC
1
GND
GND
N
FC
2
U.FL RF coax
GND
GND
N/
C
V
D
D
_I
O
GND
SW
D
IO
S
WD
CLK
IO_
1
6
N/
C
RE
S
ET
_N
BT1
J17
Power
J8
J6
USB
Debug
J12
Antennas
J11
J10
CR2032
+
3V
2
1
10
9
Micro USB
Micro USB
Debug
Power
Antennas
USB
USB
J8
J5
BT1
J12
J6
J10
J11
Board Connectors
J17
