User Manual

JDY-25M Super BLE Bluetooth Module
8
Ⅶ
. Pin function description
Pin Definition Function Description
1 TXD Serial port Serial output, the level is TTL level
2 RXD Serial port Serial input, the level is TTL level
3 NULL Null -
4 NULL Null -
5 KEY5 Input 5 In mesh mode, press the key to control the IO level of the
specified device
6 KEY4 Input 4 In mesh mode, press the key to control the IO level of the
specified device
7 KEY3 Input 3 In mesh mode, press the key to control the IO level of the
specified device
8 KEY2 Input 2 In mesh mode, press the key to control the IO level of the
specified device
9 NULL Null -
10 KEY1 Input 1 In mesh mode, press the key to control the IO level of the
specified device
11 RESET Reset Low level reset, high level working (high level if
suspended)
12 VCC Power Supply Supply（1.8-3.6V）
13 GND GND Power ground
14 PWRC Sleep wake pin Support PWRC pin wake-up in deep sleep state, and AT
instruction sending is supported when the connection
status is pulled down
15 ALED Broadcast LED
indication
In non mesh mode (flash if not connected, light on after
connection)
16 STAT Connection
status
In non mesh mode, low level if not connected, high level
after connection
In mesh mode (output high level if connect to network
successfully, if not, output low level)
17 OUTPUT5 Output 5 Default low level, support serial instruction control and
input KEY pin control in network state
18 NULL Null -
19 NULL Null -
20 NULL Null -
21 NULL Null -
22 OUTPUT1 Output 1 Default low level, support serial instruction control and
input KEY pin control in network state
23 OUTPUT2 Output 2 Default low level, support serial instruction control and
input KEY pin control in network state
24 OUTPUT3 Output 3 Default low level, support serial instruction control and
input KEY pin control in network state