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2.3 Electrical specifications
SD23 board can be supplied with any voltage in the range +12V
Power In Connector
CN44
Pin
Signal
Pin
Signal
1
GND
3
VIN_SYS
2
GND
4
VIN_SYS
2.3.1
UPS By-pass connector
The SBC-D23 board allow the possibility of connecting external UPS modules able to supply a 12V Backup, to be used in case that
the main power supply is not available
UPS By-Pass Connector
Pin
Signal
Pin
Signal
1
---
8
2
VDD_SYS
9
3
---
10
4
VDD_SYS
11
5
UPS_PFO#
12
6
UPS_BYPASS
13
7
UPS_INT#
14
Pin #1. Electrical level +3P3V_RUN
UPS_BOOST_EN: Generic UPS Enable signal. It is managed on the SBC-D23 board by I/O Expander A, Port #0 Pin #0. Electrical level +3P3V_RUN
÷ +24V
DC
This voltage can be supplied through a Right-angle connector type Molex Mini-Fit Jr, p/n 39-30-0040 or
equivalent, with the pinout indicated in the table below.
Mating connector: Molex 39-01-2045 or equivalent with 5566 series female crimp terminal
For this kind of connection, it is provided a standard Micro-fit 2x7 connector
CN3
type Molex 43045-1412 or equivalent, with the pinout shown in the table on the left.
Mating connector: MOLEX 43025-1400 or equivalent with 43030 female crimp terminal.
+12V_BACKUP
UPS_BYPASS: UPS power rail enable signal. Used to switch between the power rail coming from the external
---
UPS Module and the standard V
+12V_BACKUP
UPS_PFO#: Generic Input. It is managed on the SBC-D23 board by I/O Expander B, Port #0 Pin #0. Electrical
UPS_BOOST_EN
level +3P3V_RUN.
GND
UPS_INT#: This signal can be used to serve the interrupt request of the UPS device. It is managed on the
UPS_EN
SBC-D23 board by I/O Expander B, Port #0 Pin #1. Electrical level +3P3V_RUN.
GND
UPS_EN: IO: Generic UPS Enable signal. It is managed on the SBC-D23 board by I/O Expander A, Port #0
range (recommended voltage range)
DC
Power Supply. Electrical level +12V_ALW with 100
IN
-up resistor
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