Unconditional Hardware Shutdown - Teli LE910C1-NA Design Manual

LE910Cx HW User Guide
Note: To check whether the device has powered off, monitor the
PWRMON/SW_RDY hardware line. When PWRMON/SW_RDY or goes
low, the device has powered off.
5.3.3.

Unconditional Hardware Shutdown

To unconditionally shut down the LE910Cx module, the HW_SHUTDOWN_N pad must be
tied low for at least 200 milliseconds and then released.
Figure 8 shows a simple circuit for applying an unconditional shutdown.
Figure 10: Circuit for Unconditional Hardware Shutdown
Figure 9 shows the system power-down timing when using HW_SHUTDOWN_N.
VBATT
SHDN_N
SW_RDY
V_AUX
PWRMON
Active State
Figure 11: Power down timing using HW_SHUTDOWN_N
Note: Recommended values are as follows: R2 = 47kΩ, R1 = 10kΩ.
1VV0301298 Rev. 33
200mS Sec < T_Hold
T_RDY ~0 Sec
T_PWRMON ~0 Sec
OFF State
Page 46 of 128
Not Subject to NDA
2021-06-29