4.1.2.
Battery Connector (J4)
A battery can be used to power up the board using the Battery Connector (J4). This is a secondary option
to power up the board. This mode of power up can be used during programming the kit using Atmel-ICE
or as a standalone Receiver node. The most common primary mode of power source is from XPRO
board through 20-pin extension Header.
4.1.3.
Current Measurement Header (J5)
The current measurement header (J5) can be used to measure the current consumed by the board by
removing the jumper and connecting an Ammeter/Multimeter across the two pins of J5.
4.1.4.
User Application Connectors (J1 and J3)
There are two User Application Connectors (J1 and J3). UART, ADC, USB, and some GPIO signals of
ZigBit are available in these connectors for user application. The users can use these signals based on
their application.
Table 4-2. J1 Connector
Pin on connector
ZigBit Signal
ZigBit Pin
Kit Function
1
GPIO
10
YELLOW_LED
2
NC
11
UNUSED_PIN11
3
RXD1
13
RX
4
TXD1
14
TX
5
NC
15
UNUSED_PIN15
6
NC
16
UNUSED_PIN16
7
FEM_RX_TX
17
RED_LED
8
ANT_DIV_P
18
GREEN_LED
9
GPIO/USB_DM
19
GPIO/USB_DM
10
GPIO/USB_DP
20
GPIO/USB_DP
Table 4-3. J3 Connector
Pin on connector
ZigBit signal
ZigBit Pin
Kit Function
1
ADC0
25
ADC0
2
ADC1
26
ADC1
3
NC
27
UNUSED_PIN27
4
NC
28
UNUSED_PIN28
5
AREF
24
GPIO/AREF
6
TXD0
23
GPIO
7
RXD0
22
Push button
8
NC
21
UNUSED_PIN21
9
NC
34
UNUSED_PIN34
10
NC
39
UNUSED_PIN39
Atmel ATZB-SAMR21-XPRO [USER GUIDE]
Atmel-42695A-ATZB-SAMR21-XPRO_User Guide-08/2016
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