Cellular Module BG77LA

Product Summary

Product Description BG77 is an embedded IoT (LTE Cat M1, LTE Cat NB2) wireless communication module.

Editorial narrative

Product Description BG77 is an embedded IoT (LTE Cat M1, LTE Cat NB2) wireless communication module. It provides data connectivity on LTE-FDD network, and supports half-duplex operation in LTE network. It also provides optional GNSS and voice 1) functionality to meet customers’ specific application demands. With a compact profile of 14.9 mm ×12.9 mm ×1.7 mm, BG77 can meet almost all requirements for M2M applications such as smart metering, tracking system, security, wireless POS, etc. It is especially suitable for size and weight sensitive applications such as smart watch and other wearable devices. BG77 is an SMD type module which can be embedded into applications through its 94 LGA pads. It supports internet service protocols like TCP, UDP and PPP. Extended AT commands have been developed for customers to use these internet service protocols easily. Features Features Details Power Supply 1) Supply voltage: 2.6–4.8 V 2) Typical supply voltage: 3.3 V Transmitting Power Class 5 (21 dBm +1.7/-3 dB) for LTE-FDD bands LTE Features 1) Support 3GPP Rel. 14 2) Support LTE Cat M1 and LTE Cat NB2 3) Support 1.4 MHz RF bandwidth for LTE Cat M1 4) Support 200 KHz RF bandwidth for LTE Cat NB2 5) Cat M1: Max. 588 kbps (DL)/1119 kbps (UL) 6) Cat NB2: Max. 127 kbps (DL)/158.5 kbps (UL) Internet Protocol Features 1) Support PPP/TCP/UDP/SSL/TLS/FTP(S)/HTTP(S)/NITZ/PING/MQTT/ LwM2M/CoAP protocols 2) Support PAP (Password Authentication Protocol) and CHAP (Challenge Handshake Authentication Protocol) protocols which are usually used for PPP connections SMS 1) Text and PDU mode 2) Point to point MO and MT 3) SMS cell broadcast 4) SMS storage: ME by default SIM Interface Support 1.8 V USIM/SIM card only PCM Interface Support one digital audio interface: PCM interface USB Interface 1) Compliant with USB 2.0 specification (slave only) 2) Support operations at low-speed and full-speed 3) Used for AT command communication, data transmission, GNSS NMEA output, software debugging and firmw

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• Last verified: 2026-06-01