Hangzhou Tuya Inc.
NM1 Module Hardware Design Manual
https://www.tuya.com
Page 20 of 29
3.8.2 USB Interface Application
Figure 3- 9 Downloading interface application circuit
The nominated input power of the NM1 module is 3.3 V. When the USB interface is used for downloading, add
an LDO circuit to keep the circuit voltage at 3.3 V.
3.9 Power-On/Power-Off and Reset Interface
3.9.1 PWRKEY Pin
Table 3- 9 PWRKEY signal definition
Pin No.
Signal Name
Function Description
7
PWRKEY
NM1 module power-on
3.9.2 Power-On/Power-Off Interface Application
To power on the NM1 module, lower the PWRKEY pin to a low level for a period of time and then disconnect it
or raise it to a high level.
Figure 3- 10 PWRKEY interface application circuit
