SECO104-CX700M
User Manual
- Rev. First Edition: 1.0 - Last Edition: 3.1 - Author: S.B. - Reviewed by G.M.
Copyright © 2011 SECO s.r.l.
SECO104-CX700M
pag. 11
2.3 Electrical specifications
2.3.1 Power Connector
SECO104-CX700M is powered through the dedicated connector
CN15
, which is a 5-pin 2.54mm
pitch male connector, type PHOENIX CONTACT MC0.5/5G-2.5. Refer to the following table for the
pin assignment.
CN15
– Power connector
PIN
SIGNAL
1
+5V
DC
2
+5V
DC
/ --12V
DC
(JP2 config.)
3
+12V
4
GND
5
GND
It’s strictly recommended, if external –12V
DC
is not needed, to use pin 2 for a second
connection to +5V
DC
power supply.
Furthermore, it’s better to use cables of minimal length (the minimum required for intended
applications, possibly not more than 20-25 cm), using separate wires for each GND and
+5V
DC
voltages.
It’s also recommended the use of wires with a cross section of 0.5mm
2
(AWG20, maximum
section allowed by the connector).
SECO104-CX700M requires only an ex5V
DC
and generates all the other voltages internally,
through a supply module mounted vertically on the two dedicated connectors.
+12V
DC
is internally used only to produce a switched supply voltage for inverter
units for flat panels’
lamps; this is switched by a MOSFET driven by the graphic controller, allowing to turn on and off
the inverter unit.
If SECO104-CX700M board has to be used with PC/104+ expansion boards, is recommended
to power the board via PC/104+ pins, because these pins are capable of supplying greater
currents. Since using expansion boards increases sensibly power consumptions, this
solution has to be preferred, is possible.
2.3.2 RTC Battery
A 3.3V Rechargeable Lithium Battery supplies the Real Time Clock (RTC), which is built-in in the
VIA CX700M
TM
Chipset
The battery used is a Panasonic ML1220/F1A Battery, with a capacity of 17mAh. This battery can
grant the charge duration for a period of 2 months in total lack of power supply.
These new batteries are factory charged for first time during functional tests, and are sent to
customers already charged.
However, exactly like for all handheld devices provided with rechargeable batteries, we
recommend that all customers, during first installation of SECO104-CX700M boards, keep the
boards supplied for at least 12 hours, in order to restore battery’s optimal conditions”.
In case the internal battery is not working, or you think its characteristics are not suited for your
applications, you can use pin 1 of
UTIL
connector (
CN9
) to connect an external 3V backup battery.
Remember the board does not provide recharge circuitry for this external battery
.
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