Integration Manual
Table Of Contents
- Document Information
- Contents
- 1 System description
- 1.1 Overview
- 1.2 Architecture
- 1.3 Pin-out
- 1.4 Operating modes
- 1.5 Power management
- 1.6 System functions
- 1.7 RF connection
- 1.8 (U)SIM interface
- 1.9 Serial communication
- 1.9.1 Serial interfaces configuration
- 1.9.2 Asynchronous serial interface (UART)
- 1.9.2.1 UART features
- 1.9.2.2 UART signal behavior
- 1.9.2.3 UART and power-saving
- 1.9.2.4 UART application circuits
- Providing the full RS-232 functionality (using the complete V.24 link)
- Providing the TxD, RxD, RTS, CTS and DTR lines only (not using the complete V.24 link)
- Providing the TxD, RxD, RTS and CTS lines only (not using the complete V.24 link)
- Providing the TxD and RxD lines only (not using the complete V24 link)
- Additional considerations
- 1.9.3 USB interface
- 1.9.4 SPI interface
- 1.9.5 MUX protocol (3GPP TS 27.010)
- 1.10 DDC (I2C) interface
- 1.11 Audio Interface
- 1.12 General Purpose Input/Output (GPIO)
- 1.13 Reserved pins (RSVD)
- 1.14 Schematic for LISA-U2 module integration
- 1.15 Approvals
- 1.15.1 European Conformance CE mark
- 1.15.2 US Federal Communications Commission notice
- 1.15.3 Innovation, Science, Economic Development Canada notice
- 1.15.4 Australian Regulatory Compliance Mark
- 1.15.5 ICASA Certification
- 1.15.6 KCC Certification
- 1.15.7 ANATEL Certification
- 1.15.8 CCC Certification
- 1.15.9 Giteki Certification
- 2 Design-In
- 3 Features description
- 3.1 Network indication
- 3.2 Antenna detection
- 3.3 Jamming Detection
- 3.4 TCP/IP and UDP/IP
- 3.5 FTP
- 3.6 HTTP
- 3.7 SSL/TLS
- 3.8 Dual stack IPv4/IPv6
- 3.9 AssistNow clients and GNSS integration
- 3.10 Hybrid positioning and CellLocate®
- 3.11 Control Plane Aiding / Location Services (LCS)
- 3.12 Firmware update Over AT (FOAT)
- 3.13 Firmware update Over the Air (FOTA)
- 3.14 In-Band modem (eCall / ERA-GLONASS)
- 3.15 SIM Access Profile (SAP)
- 3.16 Smart Temperature Management
- 3.17 Bearer Independent Protocol
- 3.18 Multi-Level Precedence and Pre-emption Service
- 3.19 Network Friendly Mode
- 3.20 Power saving
- 4 Handling and soldering
- 5 Product Testing
- Appendix
- A Migration from LISA-U1 to LISA-U2 series
- A.1 Checklist for migration
- A.2 Software migration
- A.2.1 Software migration from LISA-U1 series to LISA-U2 series modules
- A.3 Hardware migration
- A.3.1 Hardware migration from LISA-U1 series to LISA-U2 series modules
- A.3.2 Pin-out comparison LISA-U1 series vs. LISA-U2 series
- A.3.3 Layout comparison LISA-U1 series vs. LISA-U2 series
- B Glossary
- Related documents
- Revision history
- Contact
LISA-U2 series - System Integration Manual
UBX-13001118 - R25 System description Page 41 of 182
1.6.2 Module power-off
The power-off sequence of LISA-U2 series modules can be correctly started, so that the current
parameter settings are saved in the module’s non-volatile memory and a clean network detach is
performed, in one of these ways:
AT+CPWROFF command (more details in the u-blox AT Commands Manual [2])
Low pulse on the PWR_ON pin for at least 1 second
An over-temperature or an under-temperature shutdown occurs when the temperature measured
within the cellular module reaches the dangerous area, if the optional Smart Temperature Supervisor
feature is enabled and configured by the dedicated AT command. For more details, see the section
3.16 and the u-blox AT Commands Manual [2], +USTS AT command.
An abrupt under-voltage shutdown occurs on LISA-U2 modules when the VCC supply is removed, but
in this case the current parameter settings are not saved in the module’s non-volatile memory and a
proper network detach cannot be performed.
☞ It is highly recommended to avoid an abrupt removal of the VCC supply: the power-off sequence
of the module must be properly started as described above (e.g. by means of the AT+CPWROFF
command), and a clean VCC supply must be maintained at least until the end of the power-off
sequence, which occurs when the generic digital interfaces supply output (V_INT) is switched off
by the module.
An abrupt hardware shutdown occurs on LISA-U2 series modules when a low level is applied to the
RESET_N pin. In this case, the current parameter settings are not saved in the module’s non-volatile
memory and a clean network detach is not performed.
☞ It is highly recommended to avoid an abrupt hardware shutdown of the module by forcing a low
level on the RESET_N input pin during module normal operation: the RESET_N line should be set
low only if a reset or shutdown via AT commands fails or if the module does not reply to a specific
AT command after a time period longer than the one defined in the u-blox AT Commands
Manual [2].