Riot Micro RM1000 NB-IoT and eMTC Baseband Chip Unveiled for the Cellular IoT Market

Telecommunication providers don’t intend to let newcomers like Sigfox or Semtech (LoRa) get all the fun and money with the Internet of Things, and that’s why LTE Cat M1 (eMTC) and Cat NB1 (NB-IoT) have been standardized.

We have already covered module and silicon vendors products such as U-blox SARA-R4 / SARA-M2 modules, or Mediatek MT2625 SoC supporting the new protocols defined in 3GPP release 13 specifications. U-blox even have a module that supports both NB-IoT and eMTC in a single chip, but they are not alone anymore, as a startup called Riot Micro introduced RM1000 baseband NB-IoT & eMTC chip.

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RM1000 key features & specifications:

  • MCU – ARM Cortex-M0 processor
  • Storage – QSPI Flash interface
  • Connectivity
    • LTE-M Baseband supporting 3GPP Release 13
    • NB-IoT Baseband supporting 3GPP Release 13
    • SIM interface with power control
  • Peripherals
    • Digital data and control interface to popular RFICs (RBDP/DIQ/SPI)
    • 3x UART interfaces
    • General purpose I/O
  • Integrated power management for external components
  • Temperature Range – -40 to +85°C

The MCU core is said to handle LTE-M/NB-IoT L1/L2/L3, IPv4, IPv6, TCP, UDP, SSL protocol stacks, as well as the AT Command stack. The company explains they applied techniques from the “BLE/Wi-Fi architecture to design the chip with cost/power levels characteristic of short-range wireless systems”.

Riot Micro RM1000 is available now in either an 8×8 mm 68-pad QFN package, or a 3.5×3.2 mm WLCSP, and reference designs for evaluation and module design can be provided to customers. More details may be found on the product page.

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3 Replies to “Riot Micro RM1000 NB-IoT and eMTC Baseband Chip Unveiled for the Cellular IoT Market”

  1. Quectel Wireless already have a set of products with LTE NB1 and LTE Cat.M1 support
    BC95 : LTE NB1 Module, based on Huawei chipset, pin to pin compatible to M95,UG95/96,EG91/95
    BG96 : LTE NB1 + M1 + EDGE + GPRS Module based on Qualcomm chipset, pin to pin compatible to M95,UG95/96,EG91/95
    BС68 : LTE NB1 Module – software equivalent to BC95, pin to pin compatible to M66 (the smallest LTE NB1 module on the market)
    BС66 : LTE NB1 Module – based on MTK chipset, pin to pin compatible to M66 (new product)
    The prices start from 18 USD for BC95

  2. I went to an NB-IoT talk today, and they listed some of the companies doing NB-IoT chips:
    * Hisilicon
    * Qualcomm
    * ZTE Welink
    * Sequans communication
    * Mediatek
    * Nordic Semi
    * Intel
    * Altair Semiconductor

    and NB-IoT modules:
    * Telit
    * Quectel
    * ZTE Welink
    * MobileTek
    * Cinterion
    * U-blox
    * Sierra Wireless
    * Sequans communication
    * Long Ung
    * SIM Com

    So plenty of choices.

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