Smart Gas/Water Meter

SMART-GAS-WATER-METER

NXP connectivity solutions for smart metering address the challenges Smart Cities face for reliable, secure communications for remote metering and home energy management. Gas and Water meters are used in every establishment that consumes fuel gas and with water supply such as commercial, residential, and industrial. Flow meters help Smart Cities measure the volume of gas at a specific time or over a long period. The measurement is then displayed on low-power segment LCDs, often driven by segment LCD drivers on an MCU.

Advanced flow meters incorporate RF communication interfaces for connecting to one-way or two-way RF meter reading systems.

Block Diagram

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LPC basic Sigfox

Smart Gas/Water Meter

LPC Long range Sigfox

Smart Gas/Water Meter
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Supported Devices

Processors and Microcontrollers

LPC5500 Arm Cortex-M33

  • LPC55S6x: High Efficiency Arm® Cortex®-M33-Based Microcontroller Family

Analog and Mixed Signal

Real-Time Clocks

  • PCF2131: Nano-Power Highly Accurate RTC with Integrated Quartz Crystal

Sensors

Differential/Gauge Up to 115 kPa

  • MPXx5050: Differential and Gauge Pressure Sensor (-50 to 50 kPa)

Interfaces

LCD Drivers

Wireless Connectivity

Sub-GHz ISM Bands

  • OL2385AHN: Low-Power Multi-Channel UHF RF Wireless Platform

Zigbee

  • JN5189_88_T: JN5189/88 (T): High-Performance and Ultra-Low-Power MCUs for Zigbee® and Thread with Built-In NFC Option

Security and Authentication

Authentication

  • EDGELOCK-A5000: EdgeLock® A5000 Plug and Trust Secure Authenticator: Authentication Made Secure, Scalable and Easy

Power Management

Load Switches

Features

Arm® Cortex®-M33 Core

  • Arm Cortex-M33 processor, running at a frequency of up to 150 MHz
  • TrustZone, floating point unit (FPU) and memory protection unit (MPU)
  • Arm Cortex-M33 built-in nested vectored interrupt controller (NVIC)
  • Non-maskable interrupt (NMI) input with a selection of sources

Co-Processor

  • Arm Cortex-M33 co-processor
    • Running at a frequency of up to 150 MHz
    • The configuration of this instance does not include MPU, FPU, DSP, ETM, and TrustZone
    • System tick timer
  • CASPER crypto co-processor to enable hardware acceleration for certain asymmetric cryptographic algorithms
  • PowerQuad hardware accelerator for (fixed and floating point) DSP functions

Security Features

  • Arm TrustZone enabled
  • PRINCE module for real-time encryption of data being written to on-chip flash and decryption of encrypted flash data during reading to allow asset protection
  • AES-256 encryption/decryption engine
  • Secure hash algorithm (SHA2) module supporting secure boot with dedicated DMA controller
  • Physical unclonable function(PUF) using dedicated SRAM for silicon fingerprint. PUF can generate, store, and reconstruct key sizes from 64 to 4096 bits. Includes hardware for key extraction
  • Random number generator (RNG)
  • 128-bit unique device serial number for identification (UUID)
  • Secure GPIO
  • The LCP55S6x is part of the EdgeLock™ Assurance program

Documentation

Quick reference to our documentation types.

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