EnOcean GmbH STM311C Manual Do Utilizador
USER MANUAL V0.6
© 2010 EnOcean | www.enocean.com
STM 31x / STM 31xC User Manual V0.6 | Page 10/28
STM 31X / STM 31XC
2.3 Pin description and operational characteristics
STM 31x
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STM 31x
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Function
C haracteristics
GND
GND
Ground connection
VDD
VDD
Supply voltage
2.1 V – 5.0 V; Start-up voltage: 2.6 V
Maximum ripple: see 2.6
Maximum ripple: see 2.6
Connection of external 3 V battery possible
VCHAR
VCHAR
Charging input
Input for external energy harvester (for
use in STM 312). See 2.10.
use in STM 312). See 2.10.
VGC
VGC
Voltage Gold Cap
Connection of additional external energy
storage or battery possible. See 2.10.
storage or battery possible. See 2.10.
SWPWR
(= switched
DVDD)
DVDD)
SWPWR
DVDD supply volt-
age regulator out-
put switched via
put switched via
transistor con-
trolled by EO3000I
WXIDIO pin.
trolled by EO3000I
WXIDIO pin.
1.8 V. Output current: max. 5 mA.
Supply for external circuitry, available
while not in deep sleep mode. SWPWR is
while not in deep sleep mode. SWPWR is
switched on 2ms (default) before sampling
of inputs and is switched off afterwards.
The delay time can be configured, see
of inputs and is switched off afterwards.
The delay time can be configured, see
2.7.2 (needed for stabilization of sensors)
UVDDext
(=UVDD
with 1.8MΩ
(=UVDD
with 1.8MΩ
in series)
UVDD
Ultra low power
supply voltage
regulator output
supply voltage
regulator output
Not for supply of external circuitry!
For use with WAKE pins only, see section
3.1. Limited to max. 1 µA output current
For use with WAKE pins only, see section
3.1. Limited to max. 1 µA output current
by internal 1.8 MΩ resistor!
IOVDD (not
available at
pin connec-
tor)
pin connec-
tor)
IOVDD
Digital interface
supply voltage
Internal connection to EO3000I DVDD
(typ. 1.8 V)
See 2.3.1.
See 2.3.1.
RESET
RESET
Reset input
Programming I/F
Active high reset (1.8 V)
Fixed internal 10 kΩ pull-down.
PROG_EN
PROG_EN
Programming I/F
HIGH: programming mode active
LOW: operating mode
Digital input, fixed internal 10 kΩ pull-
LOW: operating mode
Digital input, fixed internal 10 kΩ pull-
down.
ADIO0
AD_0
Analog input
Input read ~2 ms after wake-up.
Resolution 8 bit. See also 2.7.2.
Resolution 8 bit. See also 2.7.2.
ADIO1
AD_1
Analog input
Input read ~2 ms after wake-up.
Resolution 8 bit (default) or 10 bit.
See 2.7.2.
See 2.7.2.
ADIO2
AD_2
Analog input
Input read ~2 ms after wake-up.
Resolution 8 bit (default) or 6 bit.
See 2.7.2.
See 2.7.2.
ADIO3
DI_0
Digital input
Input read ~2 ms after wake-up.
See 2.7.2.
See 2.7.2.
Internal pull-up
ADIO4
DI_1
Digital input