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Describes electrical characteristics, RF performance, and application environment of the L831-EAU module.
Lists standards that the L831-EAU module design complies with, including 3GPP and PCI Express specifications.
Provides a list of related documents for the L831-EAU module, such as test reports and design guides.
Introduces the L831-EAU as an integrated 4G wireless communication module with M.2 interface.
Details the operating bands, data transmission rates, power supply, temperature, and physical characteristics of the module.
Illustrates the peripheral applications and system architecture connected to the L831-EAU module.
Presents the main hardware functions of the module, including baseband and RF components.
Describes the module's adherence to the standard M.2 Key-B interface with 75 pins.
Details the pin assignments and functions for the 75-pin M.2 connector of the module.
Provides a comprehensive definition for each pin on the module's M.2 interface.
Details the power supply requirements and input voltage parameters for the module.
Shows the recommended circuit design for powering the L831-EAU module with 3.3V.
Defines the 1.8V and 3.3V logic level voltage parameters for module signals.
Lists the average current consumption of the module in various operating modes and conditions.
Describes the control signals for power on/off and reset operations of the module.
Explains how to power on the module using the FULL_CARD_POWER_OFF# pin.
Illustrates the timing diagrams for different power-on control methods.
Details the methods for shutting down the module via software or hardware control.
Describes the procedure for shutting down the module using the AT+CPWROFF command.
Explains how to shut down the module using hardware signals like RESET# and FULL_CARD_POWER_OFF#.
Provides recommended timing diagrams for host reboot sequences with the module.
Details how to reset the module to its initial status using the RESET# signal.
Covers the module's support for USB 2.0 High-Speed interface.
Defines the USB data pins (D+ and D-) and their specifications.
Shows the reference circuit for USB 2.0 and provides PCB layout guidelines.
Describes the built-in USIM card interface supporting 1.8V and 3V SIM cards.
Lists the pins related to the USIM interface, including power, reset, clock, and data.
Presents the reference circuit design for the USIM card slot.
Explains the principles of the Normally Closed SIM card slot and its detection mechanism.
Details the SIM card hot-plugging function and detection mechanism.
Provides guidelines for SIM card circuit design to meet EMC and ESD requirements.
Explains the signals used to indicate the operating status of the module.
Describes the function of the LED#1 signal for indicating module status.
Explains the WAKE_WWAN# signal used to wake up the host, noting its current lack of support.
Lists the interrupt signals provided by the module and their definitions.
Details the W_DISABLE# signal for enabling/disabling RF network and entering Flight mode.
Explains how GNSS is controlled via AT commands, as the GNSS_DISABLE# pin is not supported.
Mentions the reserved 26MHz clock output but notes it's not currently supported.
Describes the four config pins used for WWAN-SSIC-0 type M.2 module configuration.
Discusses unsupported interfaces like ANT Tunable, COEX, and SSIC.
Covers the RF interface functionality, including antenna connectors.
Explains the use of Main and AUX RF connectors for antenna connections.
Details the rated conditions and environment for RF connector specifications.
Shows the dimension of the standard M.2 module RF connectors.
Lists the operating bands supported by the module's antennas for LTE and WCDMA.
Specifies the transmitting power for each band and mode of the module.
Details the receiver sensitivity for different bands and modes, including notes on dual antennas.
Describes the module's support for GPS, GLONASS, and aGPS, and GNSS control methods.
Outlines the antenna design requirements for the module's main and diversity interfaces.
Shows the visual appearance of the L831-EAU-01 module.
Provides the structural dimensions of the L831-EAU module in millimeters.
Specifies the M.2 interface model adopted by the L831-EAU module, including dimensions and key ID.
Recommends using a specific M.2 connector model from LOTES for AP connectivity.
Details the recommended temperature and humidity conditions for module storage.
States the storage period for the module under recommended sealed vacuum packing conditions.
Describes the packing methods used to protect the module during storage and transportation.
Explains the tray packaging process, including quantities per tray, box, and case.
Provides the dimensions of the pallet and tray used for module packaging.
Describes electrical characteristics, RF performance, and application environment of the L831-EAU module.
Lists standards that the L831-EAU module design complies with, including 3GPP and PCI Express specifications.
Provides a list of related documents for the L831-EAU module, such as test reports and design guides.
Introduces the L831-EAU as an integrated 4G wireless communication module with M.2 interface.
Details the operating bands, data transmission rates, power supply, temperature, and physical characteristics of the module.
Illustrates the peripheral applications and system architecture connected to the L831-EAU module.
Presents the main hardware functions of the module, including baseband and RF components.
Describes the module's adherence to the standard M.2 Key-B interface with 75 pins.
Details the pin assignments and functions for the 75-pin M.2 connector of the module.
Provides a comprehensive definition for each pin on the module's M.2 interface.
Details the power supply requirements and input voltage parameters for the module.
Shows the recommended circuit design for powering the L831-EAU module with 3.3V.
Defines the 1.8V and 3.3V logic level voltage parameters for module signals.
Lists the average current consumption of the module in various operating modes and conditions.
Describes the control signals for power on/off and reset operations of the module.
Explains how to power on the module using the FULL_CARD_POWER_OFF# pin.
Illustrates the timing diagrams for different power-on control methods.
Details the methods for shutting down the module via software or hardware control.
Describes the procedure for shutting down the module using the AT+CPWROFF command.
Explains how to shut down the module using hardware signals like RESET# and FULL_CARD_POWER_OFF#.
Provides recommended timing diagrams for host reboot sequences with the module.
Details how to reset the module to its initial status using the RESET# signal.
Covers the module's support for USB 2.0 High-Speed interface.
Defines the USB data pins (D+ and D-) and their specifications.
Shows the reference circuit for USB 2.0 and provides PCB layout guidelines.
Describes the built-in USIM card interface supporting 1.8V and 3V SIM cards.
Lists the pins related to the USIM interface, including power, reset, clock, and data.
Presents the reference circuit design for the USIM card slot.
Explains the principles of the Normally Closed SIM card slot and its detection mechanism.
Details the SIM card hot-plugging function and detection mechanism.
Provides guidelines for SIM card circuit design to meet EMC and ESD requirements.
Explains the signals used to indicate the operating status of the module.
Describes the function of the LED#1 signal for indicating module status.
Explains the WAKE_WWAN# signal used to wake up the host, noting its current lack of support.
Lists the interrupt signals provided by the module and their definitions.
Details the W_DISABLE# signal for enabling/disabling RF network and entering Flight mode.
Explains how GNSS is controlled via AT commands, as the GNSS_DISABLE# pin is not supported.
Mentions the reserved 26MHz clock output but notes it's not currently supported.
Describes the four config pins used for WWAN-SSIC-0 type M.2 module configuration.
Discusses unsupported interfaces like ANT Tunable, COEX, and SSIC.
Covers the RF interface functionality, including antenna connectors.
Explains the use of Main and AUX RF connectors for antenna connections.
Details the rated conditions and environment for RF connector specifications.
Shows the dimension of the standard M.2 module RF connectors.
Lists the operating bands supported by the module's antennas for LTE and WCDMA.
Specifies the transmitting power for each band and mode of the module.
Details the receiver sensitivity for different bands and modes, including notes on dual antennas.
Describes the module's support for GPS, GLONASS, and aGPS, and GNSS control methods.
Outlines the antenna design requirements for the module's main and diversity interfaces.
Shows the visual appearance of the L831-EAU-01 module.
Provides the structural dimensions of the L831-EAU module in millimeters.
Specifies the M.2 interface model adopted by the L831-EAU module, including dimensions and key ID.
Recommends using a specific M.2 connector model from LOTES for AP connectivity.
Details the recommended temperature and humidity conditions for module storage.
States the storage period for the module under recommended sealed vacuum packing conditions.
Describes the packing methods used to protect the module during storage and transportation.
Explains the tray packaging process, including quantities per tray, box, and case.
Provides the dimensions of the pallet and tray used for module packaging.
General| Category | Cellular Module |
|---|---|
| Form Factor | M.2 |
| Storage Temperature | -40°C to +85°C |
| SIM | Single SIM |
| Interface | M.2 B Key |
| Cellular Technology | LTE, WCDMA |
| LTE Bands | B1, B3, B5, B7, B8, B20, B28, B38, B40, B41 |
| WCDMA Bands | B1/B5/B8 |
| Data Rate (LTE) | DL 150Mbps, UL 50Mbps |
| Data Rate (WCDMA) | DL 42 Mbps, UL 5.76 Mbps |
| Interfaces | USB 2.0, UART, PCM |
| Dimensions | 30.0mm x 42.0mm x 2.3mm |
| LTE-FDD Bands | B1/B3/B7/B8/B20/B28 |
| LTE-TDD Bands | B38/B40/B41 |
| GNSS | GPS, GLONASS, BeiDou, Galileo |
| Operating System Support | Linux, Windows, Android |
| Certifications | CE, GCF |
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