User's Manual
Table Of Contents
- 1. Introduction
- 2. General Description
- 3. Simplified Block Diagram
- 4. Key Features
- 5. Product Specifications
- 6. Application Interface
- 7. Mounting the Module onto the Application Board
- 8. Package
- 9. Terms and Abbreviations
Neo_M680 Hardware User Guide V1.0
Copyright Neoway Techlology Co., Ltd. Page 18 of 31
Figure 9 Turning on /off the module using ON/OFF
6.2.1 Turning on the module:
While the module is off, drive the ON/OFF pin to ground for at least 600mS (800mS is
recommended) and then release, the module will start. An unsolicited message will be sent to host
through AT port (“+EIND: 1”), indicating the powering up of the module and the AT commands can
respond.
It’s recommended to drive the ON/OFF to low before applying the VBAT to module. 300mS
(400mS is recommended) later from the VBAT applied, release the ON/OFF. Therefore the module
starts up. The simplest way to power on the module, is to directly tie the ON/OFF to ground, issuing
to an auto-power-on feature.
After the module is operating, keep ON/OFF being high level.
6.2.2 Turning off the module:
While the module is on, drive the ON/OFF pin to ground for at least 500mS and then release, the
module will try to detach to network and normally 1 second later it will shut down. Another
approach to turn off the module is with AT command.
Figure 10 shows a reference circuits for ON/OFF control with inverted control logic.