Single Chip LTE Cat M1/NB1 SoC with Embedded Processor for the Internet of Things

Monarch SX is a highly-integrated single-chip LTE-M (Cat M1) and NB-IoT (Cat NB1) system-on-chip (SoC) with an embedded processor designed specifically for small form-factor, narrowband IoT applications, including trackers, sensors, wearables, and other low data-use, low power M2M and IoT devices. Monarch SX integrates Sequans’ Monarch, the world’s first and most highly optimized LTE-M and NB-IoT platform, and first to be certified by a tier-one operator, with an ARM® Cortex®-M4 processor, voice and audio engines with support for VoLTE on LTE-M, an always-on, ultra-low power sensor hub, and an advanced display controller to support a graphical user interface with touch screen functions. The Monarch SX modem complies with the ultra-low-power and reduced complexity feature requirements of the 3GPP release 13 LTE Advanced Pro standard, defining narrowband, low data rate LTE technology for machine-type-communications (MTC).

Monarch SX achieves a very high level of integration whereby the ARM Cortex-M4 processor, dedicated media processing unit, sensor hub, baseband processor, RF transceiver, power management unit, and RAM are integrated into a tiny 9 mm x 9.65 mm package, meeting the footprint requirements for the very smallest of IoT devices. Monarch SX runs Sequans’ SDK with a carrier-proven LTE protocol stack, an OMA lightweight M2M (LWM2M) client for over-the-air device management, a media engine, a sensor hub engine, and a royalty-free RTOS.

Monarch SX is ideal for adding LTE Cat M1 and/or LTE Cat NB1 connectivity to narrowband, low data rate M2M and IoT devices, including asset trackers, wearables, smart utility meters, smart city and smart home sensors. It is uniquely applicable to the design of feature phones due to its ability to support VoLTE, music playback, LCD screen, and activity tracking, all with low power consumption.


  • Integrated LTE-M/NB-IoT baseband and RF transceiver, ARM Cortex-M4 processor, media processing unit, sensor hub, GPU and display controller , RAM and power management
  • IoT interfaces for USB, screen, audio microphone, battery, GNSS, SIM card, secure element, Wi-Fi, Bluetooth low energy, keyboard, accelerometer, gyroscope, and other sensors
  • 3GPP Release 13 LTE Advanced Pro
  • Narrowband LTE UE categories M1 and NB1
  • Single chip FC-CSP package, 9 mm x 9.65 mm
  • Extended DRX and PSM features for ultra-low power consumption in long sleep modes
  • Programmable RF filtering for global multi-band support in a single-SKU hardware design
  • Proprietary Dynamic Power Management (DPM) technology for 10+ year operation
  • Single antenna system architecture
  • Coverage enhancement methods
  • Reduced Tx power class option
  • Optimized for half-duplex FDD (HD-FDD), and also supports full-duplex FDD (FD-FDD)
    – Throughput: LTE UE category M1 (1.4 MHz bandwidth) up to 300 kbps DL/375 kbps UL in HD-FDD, and 1 Mbps in FD-FDD
    – LTE UE category NB1 (200 kHz bandwidth) up to 40 kbps DL/55 kbps UL in HD-FDD
  • Single antenna system architecture
  • Coverage enhancement methods
  • Reduced Tx power class option

Monarch SX Recent Posts

June 18, 2019 in Internet of Things, LTE for IoT, LTE-M, NB-IoT

Sequans at MWC 2019 Shanghai 26-28 June

Sequans at MWC 2019 Shanghai 26-28 June Sequans’ executives will be at MWC Shanghai and will be meeting customers and partners at Sequans’ suite at the Kerry Pudong Hotel, adjacent... Read More
May 3, 2019 in Internet of Things, LTE for IoT

Sequans at IoT World 2019

Sequans at IoT World Internet of Things World 2019 will be held at the Santa Clara Convention Center, May 13-16. With 12,000 visitors and 300 exhibitors, IoT World is one... Read More

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