User's Manual

External interface introduction, table: 1-4
Function Item Description
External
interface
USB2TTL
UART to USB debugging port, can be used for
power supply
USB DEBUG USB2.0 debugging interface(reserved)
DC5-18V 5~18V DC input
COM1 RS232 interface
RS485 RS485 interface
JMP1 Preserve
JMP2 Preserve
JMP3
4Pin USB and RS232 debugging choosing port, left
choose USB
JPM6
3Pin RS485 与 RS232 debugging choosing port, no
wire jumper choose RS232
EXT_PORT LSD4WF-2MD05101 GPIO interface expand
JTAG JTAG data debugging interface
Battery Lithium battery supply interface
LED
indication
light
Power 3.3V power indication
Sleep_ON
Module standby indication
On：Module is in standby mode
Off：Module is working
nReady
Module start or updating ready indication
On：Module started up
Off：Module not started
Blink：Remote updating, blink frequency in
proportion to download speed
nLink
Module connection indication
On
：
Wi-Fi connected
；
Off
：
Wi-Fi unconnected
；
Button
WPS Function reserve
nReset Reset
Sleep_RQ Function reserve
nReload
Press button for over 4 seconds to restore to factory
settings.
Table 1-4 External interface introduction of LSD4WF-2MD05101developing board