LPM2100 mg NB Module Hardware User Guide
Shanghai Yuge Information Technology Co., Ltd.
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Figure 3-7 Shutdown timing diagram
Table 3-3 Shutdown timing parameters
Symbol
Description
Min Typical Max unit
Toff
TBD
-
s
Toff(status) Shutdown time (according to status status)
TBD
Toff(uart)
Shutdown time (according to uart status)
TBD
-
3.4.3 Reset
The PIN15 signal of the LPM2100 mg series module is the RESET reset pin. The
application detects that the module is abnormal. When the software does not respond, the
module can be reset. Pull the pin low for 100-450ms to reset the module. The RESET pin is
sensitive to interference. A 10 nF to 0.1
μ
F capacitor can be placed near the signal for signal
filtering. Keep away from RF interference signals when routing.
Figure 3-8 Reset reference circuit
Table 3-4 RESET pin parameters
Symbol Description
Min
Typical
Max
unit
Treset
Low pulse width
100
600
ms
VIH
RESET input high level voltage 0.68
1.07
1.41
V
VIL
RESET input low level voltage
-0.3
0
0.68
V
