Data Sheet

SIGNAL AND PINS
POWER-UP SEQUENCE
25 PROPRIETARY GM01Q DATASHEET
SEQUANS Communications
4.3 Power-up Sequence
The following timing requirement applies to the signals VBAT1, POWER_EN
and RESET_N. It must be respected for proper GM01Q’s behavior.
Note: The POWER_EN signal has no function for Monarch platform
modules. It is mentioned here for compatibility reasons with
Calliope platform modules.
Figure 4-2: VBAT1, POWER_EN and RESET_N Signals Timing Requirement
for Cold Start
Figure 4-3: VBAT1, POWER_EN and RESET_N Signals Timing Requirement
for Warm Start
Figure 4-4: VBAT1, POWER_EN and RESET_N Signals Timing Requirement
for Reset Cycle
The timing minimum values are listed in Table 4-2.
Note: For cold start: ts+ts1=10 s maximum.
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Table 4-2: VBAT1 and RESET_N Signal Timing Values
Symbol Description Minimum Duration Maximum Duration
th1 RESET_N hold time 1 µs -
ts VBAT1 setup time 1 ms -
ts1 RESET_N setup time 1 ms -