USER MANUAL
V0.904
EnOcean GmbH
Kolpingring 18a
82041 Oberhaching
Germany
Phone +49.89.67 34 689-0
Fax +49.89.67
34
689-50
[email protected]
www.enocean.com
Subject to modifications
STM110C User Manual V0.904
February 18, 2008 2:00 PM
Page 28/40
STM110C
3
APPLICATIONS INFORMATION
3.1
Module Mounting
The STM110C module requires some external circuitry configuration and connecting to the
application-specific sensorics circuit. This external circuitry should easily find place on a
small PCB that can be connected upside down to the EnOcean module via the STM dual row
header. This allows the realization of very compact sensor units.
Figure 7: Examples of compact sensor unit
The following features have to be available on the user PCB:
Power supply by connecting V_SC1 and V_SC2 to the supplied solar cell or by con-
necting V_SC1 to another suitable external energy source
Configuration of the STM firmware by connecting the input pins CW_0..1 and
CP_0..1
If needed, an application-specific sensor circuitry connected to analog input pins
(AD_0, AD_1, and/or AD_2) and powered by V_OUT, V_REF and GND
If needed, connections to digital signal inputs DI_0..3. The digital inputs can also
be used for an individual sensor type identification defined by the user.
If needed, a changeover switch connected to the differential WAKE pins for provid-
ing spontaneous wake-up
If needed, a light emitting diode connected between the LED and GND pins for pro-
viding optical feedback of sending
To avoid radio frequency pickup from the environment, strip lines of the user cir-
cuit should be designed as short as possible, and the use of a PCB ground plane
layer is recommended.
9 mm
User PCB
STM
110
Module
9 mm
User PCB
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9 mm
User PCB
STM
110
Module
9 mm
User PCB
E
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er
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st
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STM
110
Module
S
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