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MediaTek chip supports GPRS and NB-IoT

Steve Rogerson
December 5, 2017



Taiwanese company MediaTek has announced a dual-mode system-on-chip (SoC) for IoT applications with both NB-IoT release 14 and GSM and GPRS connectivity.
 
The power efficient MT2621 chipset brings dual-mode cellular technologies for IoT and supports the development of a broad range of connected devices including fitness trackers and other wearables, IoT security sensors, smart meters and various industrial applications.
 
For security, metering and industrial applications where the install period is often long – up to ten years – and requires few adjustments, this device can be suitable. As it is expected that many GSM and GPRS networks will be retired in the medium-term in favour of 3GPP-backed NB-IoT, designing a connected IoT product with a ten-year install-life is difficult unless it covers both the existing and future networks. Using the MT2621 means a single product design can accommodate this cellular change-over, without having to adjust the device in-situ; giving confidence to products designers and company purchasing managers.
 
The SoC has an integrated design with a connectivity platform that allows it to work with current GSM and GPRS as well as NB-IoT networks for IoT coverage and phone call capability. The connectivity features built into the chipset meet the needs of cellular network infrastructure for both GSM and future NB-IoT.
 
It requires only a single SIM and antenna to cover both cellular networks, with dual standby functionality. This allows a single UICC and mobile number for both networks, even while operating simultaneously, resulting in a simplified design that helps manufacturers bring their devices to market faster.
 
The chipset integrates a wideband front-end module that provides support for all ultra-low, low and mid bands across the globe.
 
At its core, the device is powered by an Arm v7 MCU paired with internal flash and PSRAM. CPU frequency is 260MHz. The chipset supports sight and sound interfaces for peripherals, and comes with built-in Bluetooth 4.2 for connecting to other devices nearby.
 
MediaTek is a fabless semiconductor company that enables 1.5 billion connected devices a year.