Power-On-Reset And Brown-Out-Reset; Table 5-3: Getvbat Command; Table 5-4: Getvbat Response - Semtech LR1110 User Manual

Table 5-3: GetVbat Command

Byte
Data from Host
Data to Host

Table 5-4: GetVbat Response

Byte
Data from Host
Data to Host

5.4 Power-On-Reset and Brown-Out-Reset

The LR1110 features both POR and BRN features.
The POR/BRN ensure a proper startup of the circuit maintaining the internal blocks reset until a safe level of the battery
voltage is reached, for example at battery insertion. The BRN triggers a device reset in case the battery voltage goes below
the safe operation threshold of 1.7V (typically). The POR/BRN detector has a 50 mV hysteresis.
Refer to Figure 5-1: LR1110 POR and BRN Functions
LR1110
User Manual Rev.1.0
UM.LR1110.W.APP March 2020
0
0x01
Stat1
0
0x00
Stat1
5 VBat(7:0)

 
-------------------------------- -
=
VBAT V  
 
255
for an illustration of the POR and BRN functions.
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Vbat(7:0)
  1.35
– 1
 
1
0x19
Stat2
1
0x00
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