User's Manual
HF-LPT220 Low Power WiFi Module User Manual
Shanghai High-Flying Electronics Technology Co., Ltd(www.hi-flying.com) - 14 -
<Notes>
When bootup, module PIN4/5/9 must be high.
I — Input;O — Output
PU—Internal 4.7K Resistor Pull Up;PD—Internal Pull Down; I/O: Digital I/O; Power—
Power Supply
nReload Pin (Button) function:
1. When this pin is set to “low” during module boot up, the module will enter wireless
firmware and config upgrade mode. This mode is used for customer manufacture.
(See Appendix C to download software tools for customer batch configuration and
upgrade firmware during mass production)
2. After module is powered up, short press this button ( “Low” < 2s ) to make the
module go into “Smart Link “ config mode, waiting for APP to set password and
other information. (See Appendix C to download SmartLink APP)
3. After module is powered up, long press this button ( “Low” >= 4s ) to make the
module recover to factory setting.
High-Flying strongly suggest customer fan out this pin to connector or button for
“Manufacture” and “ Smart Link” application.
nLink Pin (LED) function:
1. At wireless firmware and config upgrade mode , this LED used to indicate configure
and upgrade status.
2. At “Smart Link “ config mode, this LED used to indicate APP to finish setting.
3. At normal mode, it’s Wi-Fi link status indicator
High-Flying strongly suggest customer fan out this pin to LED.
1.2.2. Electrical Characteristics
Absolute Maximum Ratings:
Parameter Condition Min. Typ. Max. Unit
Storage temperature range -40 125 °C
Maximum soldering temperature IPC/JEDEC J-STD-020 260 °C
Supply voltage 0 3.6 V
Voltage on any I/O pin 0 3.6 V
ESD (Human Body Model HBM) TAMB=25°C 2.5 KV
ESD (MM) TAMB=25°C 0.25 KV
Power Supply & Power Consumption:
Parameter Condition Min. Typ. Max. Unit
Operating Supply voltage 2.95 3.3 3.6 V
Supply current, peak Continuous Tx 280 mA
Supply current, IEEE PS DTIM=100ms 30 mA