User's Manual

USER MANUA
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V0.60
© 2010 EnOcean | www.enocean.com STM 330 / STM 330C User Manual V0.60 | Page 13
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STM 330 / STM 330C
2.5 Maximum ratings (operating)
Symbol Parameter Min Max Units
VDD Supply voltage at VDD and VDDLIM 2.1 5.0 V
VGC Voltage gold cap 1.5 3.3 V
VCHAR Supply voltage from external energy harvester 0 6 V
ICHAR
Supply current from external energy harvester
Continuous
Short term (<10 min)
50
1
µA
mA
GND Ground connection 0 0 V
VINA Voltage at every analog input pin 0 2.0 V
VIND Voltage at RESET, WAKE0/1, and every digital input 0 3.6 V
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
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 Turn on threshold 2.3 2.45 2.6 V
VOFF Turn off threshold
Automatic shutdown if
VDD drops below VOFF
1.85 1.9 2.1 V
Threshold detector
STM 330 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 330. For details of this
mechanism please refer to the Dolphin Core Description documentation.