Figure 17. BA
TT1 connector
Table 16. BA
TT1 connector pins and signals
Signal BATT1 connector
GND Pin 1
BAT_NC Pin 2
VBAT Pin 3
1.6.3.9 Power supply
Different sources can supply the STWIN.box core system board:
•
V_USB: through USB-Type C connector (sink only, 5 V).
• V
IN
: through J5 connector (4.8-5.5 V).
Note: Limit the current on this port to 2 A.
• VBAT: lithium ion polymer battery (3.7 V, 480 mAh) and the STBC02 battery charger integrated in the
board.
The battery is optional. The STBC02 battery charger automatically checks the available power inputs and selects
one of them to power the system. When the battery or another source is connected, the STBC02 automatically
charges the battery.
When battery-powered, the equipment is intended to work properly with an operating temperature of 35°C.
Without the battery, the equipment is intended to work properly with an operating temperature of 45°C.
UM2965
Functional blocks
UM2965 - Rev 1
page 20/58
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