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SIM5360_Hardware Design_V1.06
2016-11-17
25
Coin-type rechargeable battery is recommended, such as ML414H-IV01E form Seiko can be used.
Note: The VRTC can be disabled, jus disconnect it in application circuit.
3.2
Reset Function
SIM5360 also have a RESET pin (PIN4) to reset the module. This function is used as an emergency reset
only when AT command “AT+CPOF” and the PWRKEY pin has no effect. User can pull the RESET pin
to ground, then the module will reset.
This pin is already pulled up in module, so the external pull-up resistor is not necessary. A 100nF capacitor
close to the RESET pin is strongly recommended. A reference circuit is recommended in the following
figure.
100nF
Treset >50ms
RESET
Reset
Logic
MODULE
Reset
Impulse
RESET
C106
4.7K
VDD_1V8
RESET_N
Figure 14: Reset circuit
Note
:
50ms<Treset<200ms. ESD components are suggested to be used on Reset pin.
3.3
Minimize Power Consumption
There are two modes that SIM5360 achieves low power consumption.
3.3.1
Sleep mode
If peripheral equipments stops working, and there is no on air or hardware interrupts (such as GPIO
interrupts or data on UART), SIM5360 will enter sleep mode automatically. In this mode, SIM5360 can
still receive paging
,
voice call or SMS from network.
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