User Guide

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GM500-U1G_A
Hardware Development Guide
Figure 2–6 Timing of Turning on Mode
Table 2-6 Power-on Time
Parameter Description Min Typical Max Unit
T1 The period that the Power-on signal for power on operation is kept on the low PWL 0.1 0.2 -- Second
T2 The minimum interval between the POWER_ON and RESET signals if you want to
reset the module after power-on.
10 15 --
Second
2.6. Turn off Scenarios
The module supports two modes to turn off:
Mode 1:
Pull down pin1 (POWER_ON) for 2.5-3s will turn off the module. The power off process will take 22s at least. The reference circuit
can refer to the figure 2-5.
Table 2-7Power-off Time
Parameter Description Min Typical Max Unit
T2 The period that the POWER_ON signal for power off operation is
kept on the low PWL
2.5 3 --
second
T3 The period that the VBAT signal should be kept after power off
operation is down
22 -- --
second
VBAT
POWER_ON
T1
Ensure VBAT steady
T2
RESET_N