Publication No. SBC329-HRM/1
Specifications 117
A.2 Electrical Specification
A.2.1 Voltage Supply Requirements
The SBC329 requires the VPX Vs1
2
(+12V), Vs2 (+3.3V), Vs3 (+5V) and 3V3_AUX
supplies. These must remain within the limits specified below. If any of the supplies
is outside of these specifications at power-up, the SBC329 will fail to start. If the
supplies fall outside of these limits during a powered state, the SBC329 is held in
reset and all on-board supplies are shut down. All supplies should be monotonic as
they ramp up, and the total ramp times should be between 20 ms and 150 ms.
The VPX ±12V_AUX supplies are not used on the SBC329, but are connected to the
XMC site.
The values in the table below are inclusive of any ripple on the supplies.
Table A-2 Voltage Supply Requirements
Supply
Minimum Nominal Maximum
VS1
+11.4V
+12.0V
+12.6V
VS2
+3.25V
+3.3V
+3.45V
VS3
+4.88V
+5.0V
+5.25V
P3V3_AUX
+3.14V
+3.3V
+3.46V
P12V_AUX
+11.4V
+12.0V
+12.6V
N12V_AUX
-12.6V
-12.0V
-11.4V
VBAT
+2.55V
+3.0V
+3.5V
WARNING
Do not exceed the maximum rated input voltages or apply reversed bias to the assembly. If
such conditions occur, toxic fumes may be produced due to the destruction of components.
2
The SBC329-xxxxxx2xx variant only does not require VPX Vs1 to be available.