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SECOCQ7-mITX2.0
User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by G.M.
2.4 Electrical specifications
SECOCQ7-mITX2.0 board needs to be supplied using a standard ATX Power Supply.
The board, however, can also be configured to work in AT mode.
Power Connector is type Molex Mini-Fit Jr. connector, p/n 39-28-1243, or equivalent, with the pin-
out indicated in the following table (is the standard 24-pin ATX pin-out).
Power connector – CN30
Pin
Signal
1
+3.3V_S
2
+3.3V_S
3
GND
4
+5V_S
5
GND
6
+5V_S
7
GND
8
PWGIN
9
+5V
SB
10
+12V_S
11
+12V_S
12
+3.3V_S
***PS_ON: this signal is present only if the board is configured, via JP6, to work in ATX mode. If
working in AT mode, this pin is connected directly to Ground
Selection of AT –ATX mode is made using this standard 2x2 pin header, P2.54mm.
JP11 configuration
1-2
2-3
Three SMT LEDs are present near the Power Connector to indicate the state of Power Supply
Voltage.
Red Led, D22: +5V_S ON
Yellow Led, D23: +5V
Green Led, D24: +3.3V_S ON
There are also two small pushbuttons, M1 and M2, on board's border near the mini PCI Express
slot, that are used, respectively, to reset or to turn on/off the power of the board.
2.4.1 RTC Battery
For the occurrences when the system (Carrier Board + Qseven
external power supply, nor with an internal Smart Battery, on board there is a vertical battery
holder (CN28), for the use of standard coin battery type CR2032 with a nominal capacity of
220mAh, to supply, with a 3V voltage, the Real Time Clock and CMOS memory mounted on your
®
Qseven
module.
The batteries should only be replaced with devices of the same type. Always check the orientation
before inserting and make sure that they are aligned correctly and are not damaged or leaking.
Pin
Signal
13
+3.3V_S
14
---
15
GND
16
PS_ON***
17
GND
18
GND
19
GND
20
---
21
+5V_S
22
+5V_S
23
+5V_S
24
GND
Mode
ATX mode
AT mode
ON
SB
Copyright © 2013 SECO S.r.l.
SECOCQ7-mITX2.0
®
module) is not powered with an
Page 12
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