Cinterion
®
ELS81-US Hardware Interface Description
3.2 Power Up/Power Down Scenarios
77
els81-us_hid_v01.004
2017-09-27
Confidential / Preliminary
Page 59 of 107
Figure 33:
Automatic ON circuit based on voltage detector - option 2
3.2.2
Restart ELS81-US
After startup ELS81-US can be re-started as described in the following sections:
•
Software controlled reset by AT+CFUN command: Starts Normal mode (see
).
•
Hardware controlled reset by EMERG_RST line: Starts Normal mode (see
3.2.2.1
Restart ELS81-US via AT+CFUN Command
To reset and restart the ELS81-US module use the command AT+CFUN. See
for details.
Voltage Detector*
BATT+
BB
GND
ON
VDDLP
* It is recommended to
apply the ultra-low current voltage
detector NCP303LSN28T1 manufactured by ON Semiconductor.
Details please refer to www.onsemi.com
Input
RESET
Output
GND
R1
10
KO
hm
2
1
3
0.1μF
GND
5 C
D