M2M Control CX660 Technical Manual V1.02
Advanced Automotive M2MI/IoT Gateway
Page 16 of 44
Digital outputs
The digital outputs control four “high-side” switches. They function like a contact, where one side
is connected to the positive supply of the CX660, and the other is the output. The switches are
protected against short circuit, ESD and electronic kickback from inductive loads such as relays,
etc. The maximum switch-able inductance is 20mH and must not be exceeded.
The digital outputs are supplied through the X1 power connector that also supplies the rest of the
CX660. As this power is also the M2M CONTROL CX660 main power, a power-fail would also
affect the digital outputs.
The CX660 offers a very advanced power management that makes it possible to have one or more
outputs enabled while the CX660 is in low power mode. Please consult the M2M CONTROL IDE
documentation for additional information.
When using the function pmExternalPower to disable the external supply it should be observed
that any digital outputs that are activated will draw approx. 0.6 mA @ 12VDC from the external
power source.
X3: 16 pin I/O connector overview.
Pin
Name
Description
1
DOUT 1
Digital output 1
9
DOUT 2
Digital output 2
2
DOUT 3
Digital output 3
10
DOUT 4
Digital output 4
Specification for each digital output
Type
Min. Max.
Unit
Solid state
5.5
36
VDC
Short-circuit, Overload, Overvoltage, ESD,
Inductive kick-back protected up to 20mH (single pulse).
-
1.5
A
-
280
mΩ
On-state resistor per channel
Please note:
Special attention to wiring must be taken; if the total current consumption of the
digital outputs exceeds 1.5A, then PGND must be used as a return path for the output(s).
If the total current consumption of the digital outputs exceeds 5A, the two SUPP pins and PGND
must be used for supply.
