HF-LPX30 Series Low Power WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd(www.hi-flying.com)
- 11 -
High-Flying strongly suggest customer fan out this pin to LED.
PWM function
：
PWM0~PWM3 100ns period(if duty is from 0~255, then the maximum frequenry is
10M/256=39KHz), PWM4 support 800ns period.
Due to PWM pin is internal weak pull-up. So when these pins are used for LED bulb
application, suggest to add strong pull-down resistor to revent the lulb on when boot.
Note
：
nReload pin is also used for special function, when use this pin for PWM bulb
application and add external pull-down resistor, this will cause the module wait 1 second
when bootup(wait “space” key to etner bootloader). Contact us to provice special
bootloader in order to remove this wait time.
UART1 Debug
：
1.
Is used for debug log or firmware program, baud rate 921600.
2.
Can be used for communication in SDK.
1.2.2. Electrical
Characteristics
Table3. Absolute Maximum Ratings:
Parameter
Condition
Min. Typ. Max.
Unit
Work temperature range
-40
105
°C
Maximum soldering temperature
IPC/JEDEC J-STD-020
260
°C
ESD (Human Body Model HBM)
TAMB=25°C
2.5
KV
ESD (MM)
TAMB=25°C
0.25
KV
Table4. Power Supply & Power Consumption:
Parameter
Condition
Min. Typ. Max. Unit
Operating Supply voltage
2.9
3.3
4.2
V
Supply current, peak
Continuous Tx
260
mA
Supply current,
STA No data transfer
27
mA
Supply current,
STA Continuous data transfer
35
mA
Supply current,
AP
80
mA
GPIO sink current
GND+0.5V
3
mA
GPIO pull current
VCC-0.5V
3
mA