SC200L Hardware Design
SC200L_Hardware_Design
28 / 103
3.5.2. Turn off Module
Set the PWRKEY pin low for at least 1s, and then choose to turn off the module when the prompt window
comes up.
It can also be forced to restart by pulling down the PWRKEY key for a long time (more than 7 seconds).
The restart sequence diagram is as follows:
Figure 8: Restart timing diagram
3.6. Power Output
SC200L supports the output of regulated voltages for peripheral circuits. During application, it is
recommended to use parallel capacitors (33pF and 10pF) in the circuit to suppress high-frequency noise.
Table 6: Power Description
Pin Name
Default Voltage (V)
Driving Current (mA)
IDLE
LDO1_1V85 1.85
100
KEEP
LDO2_1V8 1.80
500
/
LDO3_2V8 2.80
150
/
LDO4_2V8 2.80
200
KEEP
SD_VDD 3.00
400
/
USIM1_VDD 1.80/2.95
50
/
USIM2_VDD 1.80/2.95
50
/
