Chipsets

Boudica 150

Hi2115 is a SoC that operates at cellular frequencies. It supports small footprint IoT applications using an on-chip application processor with integrated memory. It can also communicate with an external MCU via digital interface. It operates within 698-960 MHz and 1695-2180 MHz with a 200 kHz system bandwidth. The modules produced using ultra-low power Hi2115 are approved by many operators to deploy on their networks. These IoT devices cover a wide range of applications - smart metering, smart grid, traffic management, security and asset tracking, environmental monitoring and control, tele-health and patient monitoring, and smart cities.

3GPP R14 and ultra-low power consumption

Stability and reliability at scale

Used by over 70 mainstream carriers

Key Features

  • Highly integrated mixed signal IC for NB IoT

    • Single-die: radio transceiver + baseband + applications processor + PMU
    • Radio transceiver drives external FEM or PA/filter/switch
    • Two wide-band SAW-less receiver inputs
    • MIPI/GPIO RF front end control
    • 698-960 MHz and 1695-2180 MHz tuning range
    • 3 x ARM M0 processors for Protocol, Security and Application firmware
    • Single tone and multi tone
    • 14dBm power class in addition to 20dBm and 23dBm
    • Embedded on-die flash, SRAM, ROM and OTP secure operation
    • Integrated PMU, allowing direct from battery
    • Integrated sensors and peripherals for applications
    • Ultra-low deep sleep current essential for long battery life
  • Serial interfaces available to apps core

    • UARTs with programmable baud rates x3
    • SPI x2
    • I2C x2
    • PWM x2
    • LP UART RX operational at low speeds during deep sleep x1
    • Note that other serial interfaces are on the IC, such as SIM & SWD, but these are not under apps control
  • Analogue peripherals

    • 10-bit ADC
    • 10-bit DAC
    • 2 x level comparators that can cause wake-up from deep sleep
    • Capacitive touch sensor
    • 3-bit programmable current source
    • PTAT voltage for temperature sensing
    • Programmable current source
    • Battery voltage sensor
  • Digital GPIOs

    • Up to 40 GPIOs
    • Typically 4 GPIOs are needed for controlling the RF front-end, so are not available to the apps core
    • Serial interfaces are multiplexed onto these GPIOs
    • Edge counters can generate interrupts and cause wake-up from deep sleep
  • NB IoT optimised software suite

    • 3GPP Release 14 NB-IoT optimised protocol stack
    • IPv4, IPv6 and Non-IP data
    • UDP/TCP/CoAP/LwM2M/MQTT/DTLS/PPP
    • Secure Boot and Secure FoTA - software upgrade
    • Software Development Kits for apps development
    • Range of tools for Calibration, Validation and Debug

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