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User Manual May 2019 | Page 20/49
USER MANUAL
Scavenger Transmitter Module
STM 330 / STM 331 STM 331U / STM 332U / STM 333U
(Stepcode DE and later)
ADIO3
HSM
Input for HSM 100 Internal pull-up; leave open or
connect HSM 100
ADIO4
Not used
Internal pull-up; do not connect
ADIO6
Not used
Internal pull-up; do not connect
ADIO7
Programming I/F
Leave open
SCSEDIO0
CW_1
Encoding input for
wake-up cycle
Configuration interface.
Leave open or connect to GND. See 3.9.1.
Internal pull-up
Programming I/F
SCLKDIO1
CW_0
Encoding input for
wake-up cycle
Configuration interface.
Leave open or connect to GND. See 3.9.1.
Internal pull-up
Programming I/F
WSDADIO2
CP_1
Encoding input for
retransmission
Configuration interface.
Leave open or connect to GND. See 3.9.1.
Internal pull-up
Programming I/F
RSDADIO3
CP_0
Encoding input for
retransmission
Configuration interface.
Leave open or connect to GND. See 3.9.1.
Internal pull-up
Programming I/F
WAKE0
OCC
Wake input
Input for external occupancy button.
Change of logic state leads to wake-up and
transmission of a telegram if correct EEP
selected. See 3.9.2.
Must be connected to UVDDext or GND!
At time of delivery WAKE0 is connected to
UVDDext via a jumper at the connector.
See also 4.1.
WAKE1
LRN
LRN input
Press (HIGH to LOW) transmission of
teach-in telegram. Long press (typ. 10 sek
in LOW) leads to mode change. – STM 330
/ STM 331.
Internal pull-up to UVDD.
See also 3.10 and 4.1.
3.5.1
GPIO supply voltage
The IOVDD pin of EO3000I is internally connected to DVDD. For digital communication with
other circuitry therefore a voltage of 1.8 V has to be used. While the module is in deep
sleep mode the microcontroller with all its peripherals is switched off and DVDD, IOVDD,
and SWPWR are not supplied.
If DVDD=0 V and IOVDD is not supplied (e.g. while in sleep mode), do not apply
voltage to ADIO0 to ADIO7 and the pins of the serial interface (SCSEDIO0,
SCLKDIO1, WSDADIO2, RSDADIO3). This may lead to unpredictable malfunction
of the device.
