![SimCom SIM5215 Hardware Design Download Page 26](http://html1.mh-extra.com/html/simcom/sim5215/sim5215_hardware-design_1274787026.webp)
Smart Machine Smart Decision
4.7K
47K
Turn on/ off impulse
POWER_ON
Power
on / off logic
200K
1.8V
MODULE
Figure 16: Power on Timing Sequence
Table 6: Power on timing
Time value
Parameter
Description
Min.
Typ.
Max.
Unit
Ton
The time to pull POWER_ON down to power on
64
180
-
ms
TpD+
The time to indicate connecting with the network
-
-
5.5
s
Tpw+
The time to indicate the module is powered on
completely
-
-
9
s
Tuart
The time to enable UART
-
-
5
s
Tusb
The time to enable USB
-
-
9
s
SIM5215&SIM5216_Hardware Design_V2.02
2012-08-31
26