Power Rails - Seco SBC-C31 User Manual

2.3.2

Power rails

In all the tables contained in this manual, the power rails are named with the following meaning:
V : Power In voltage (in the range +12VDC ..+24VDC) directly coming from the Power Supply connectors CN1 or CN2
IN
V : 3V power rail for supplying the optional Ultra Low Power RTC
RTC
+12V_ALW: +12V power rail, directly generated from VIN power rail, immediately available when VIN voltage is applied
+5V_ALW: +5V power rail, directly generated from VIN power rail, immediately available when VIN voltage is applied
+3V3_ALW: +3.3V power rail, directly generated from VIN power rail, immediately available when VIN voltage is applied and 5V_ALW voltage is stable
+5V_RUN: main +5V power rail generated by the +5V_ALW power rail and enabled by the on-board PMIC
+3V3_RUN: main +3.3V power rail generated by the +3V3_ALW power rail and enabled by the on-board PMIC
+1V8_RUN: main +1.8V power rail generated and enabled by the on-board PMIC
+3V3_OUT: 3.3V power rail specific for I/O connectors, derived from +3.3V_ALW power rail upon SW enabling.
SBC-C31
SBC-C31 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by D.T. - Copyright © 2021 SECO S.p.A.
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