EnOcean GmbH STM311C 사용자 설명서
USER MANUAL V0.6
© 2010 EnOcean | www.enocean.com
STM 31x / STM 31xC User Manual V0.6 | Page 13/28
STM 31X / STM 31XC
2.6 Power management and voltage regulators
Symbol Parameter
Conditions / Notes
Min
Typ
Max
Units
Voltage Regulators
VDDR
Ripple on VDD, where
Min(VDD) > VON
Min(VDD) > VON
50
mV
pp
UVDD
Ultra Low Power supply
1.8
V
RVDD
RF supply
Internal signal only
1.7
1.8
1.9
V
DVDD
Digital supply
Internal signal only
1.7
1.8
1.9
V
Threshold Detector
VON
VON
Turn on threshold
2.3
2.45
2.6
V
VOFF
Turn off threshold
Automatic shutdown if
VDD drops below VOFF
VDD drops below VOFF
1.85
1.9
2.1
V
Threshold detector
STM 31x provides an internal ultra low power ON/OFF threshold detector. If VDD > VON, it
turns on the ultra low power regulator (UVDD), the watchdog timer and the WAKE# pins
STM 31x provides an internal ultra low power ON/OFF threshold detector. If VDD > VON, it
turns on the ultra low power regulator (UVDD), the watchdog timer and the WAKE# pins
circuitry. If VDD ≤ VOFF it initiates the automatic shut down of STM 31x. For details of this
mechanism please refer to the Dolphin Core Description documentation.
mechanism please refer to the Dolphin Core Description documentation.
2.7 Configuration
2.7.1 Configuration via pins
The encoding input pins have to be left open or connected to GND in correspondence with
the following connection schemes. These settings are checked at every wake-up.
The encoding input pins have to be left open or connected to GND in correspondence with
the following connection schemes. These settings are checked at every wake-up.
Wake-up cycle time
CW_0
CW_1
Wake-up cycle time
NC
GND
1 s ±20%
GND
NC
10 s ±20%
NC
NC
100 s ±20%
GND
GND
No cyclic wake-up