Switching Machine Reset Mode; Boot; Shut Down - YUGE LPM2100 bg Series Usage Manual

LPM2100 bg NB Module Hardware Usage Guide

3.4 Switching machine reset mode

3.4.1 Boot

The LPM2100 bg series module VBAT is powered on automatically after power-on. The
user can check whether the module is powered on by querying the high and low levels of the
VDD_EXT pin.
The following picture shows the boot sequence diagram：
Symbol Description
Tdelay
Ton(status) Boot time (according to status status)
Ton(uart) Boot time (according to uart status)

3.4.2 Shut down

The LPM2100 bg series module can be powered off by the VBAT pin or by using the AT
"at+cpof" command.
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Figure 3-3 VDD_EXT power output timing diagram
Figure 3-4 boot timing diagram
Table 3-3 Boot timing parameters
Min Typical
TBD
TBD
TBD
Max unit
- s
- s
- s
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