LTE Standard Module Series
EC200T Series Hardware Design
EC200T_Series_Hardware_Design 57 / 90
1. Please make sure that VBAT is stable before pulling down PWRKEY pin. It is recommended that the
time between powering up VBAT and pulling down PWRKEY pin is no less than 30 ms.
2. When using MCU to control module to enter the emergency download mode, please follow the above
timing sequence. It is not recommended to pull up FORCE_USB_BOOT to 1.8 V before powering up
VBAT. Directly connect the test points as shown in Figure 27 can manually force the module to enter
download mode.
NOTES
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