User's Manual
USER MANUAL
© 2013 EnOcean | www.enocean.com TCM 300x / TCM 320x User Manual | Page 14/54
TCM 300 / TCM 300C / TCM 300U
TCM 320 / TCM 320C / TCM 320U
NEL3
Max. output current:
2 mA @ IOVDD=3.3 V
0.65 mA @ IOVDD=1.8 V
Programming I/F
RSDADIO3
22
12
MODE 0: RMI
Normal operation: Digital output, in-
ternally set to LOW
Remote Management: ACTION com-
mand indicator (see 3.9.1)
Max. output current:
2 mA @ IOVDD=3.3 V
0.65 mA @ IOVDD=1.8 V
MODE 1-4: LMI
Normal operation: Learn mode indica-
tor
Remote Management: ACTION com-
mand indicator (see 3.9.1)
Digital output
Max. output current:
2 mA @ IOVDD=3.3 V
0.65 mA @ IOVDD=1.8 V
Programming I/F
WXIDIO
29
Not used
Digital output, internally set to LOW
WXODIO
30
Not used
Digital output, HIGH if VDD>VON,
LOW if VDD<VON, see also 4.11
RF_WHIP
4
RF output
Output for whip antenna
RF_50
6
RF output
50 Ohm output for external antenna
n.c.
3,
32,33,
34
Not connected
Do not connect!
For more details regarding I/Os please refer to Dolphin Core Description.
3.2.1 GPIO supply voltage - IOVDD
For digital communication with other circuitry (peripherals) the digital I/O configured pins
of the mixed signal sensor interface (ADIO0 to ADIO7) and the pins of the serial interface
(SCSEDIO0, SCLKDIO1, WSDADIO2, RSDADIO3) may be operated from supply voltages
different from DVDD. Therefore an interface voltage supply pin IOVDD is available which
must be connected either to DVDD or to an external supply within the tolerated voltage
range of IOVDD.
If DVDD=0 V (e.g. in any sleep mode or if VDD<VOFF) and IOVDD is supplied,
there may be unpredictable and varying current from IOVDD caused by internal
floating nodes. It must be taken care that the current into IOVDD does not exceed
10 mA while DVDD=0 V.
If DVDD=0 V and IOVDD is not supplied, do not apply voltage to any above men-
tioned pin. This may lead to unpredictable malfunction of the device.
Inside TCM 320x the signals VDD and IOVDD are internally connected! Therefore
the above mentioned issues have to be considered when writing own firmware