SDAA486 September   2026 CC1312R

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Smart Meter EU Regulations
    2. 1.2 Rotary Metrology Designs
  5. 2Smart Flow Meters and Sub-Metering Devices
    1. 2.1 Heat Cost Allocator (Sub-Metering)
      1. 2.1.1 HCA Key Functions
        1. 2.1.1.1 IrDA Communication Port
        2. 2.1.1.2 Temperature Measurement (Two-Sensor Method)
        3. 2.1.1.3 Segment LCD Support
    2. 2.2 Retrofit Add-On Module for Mechanical Water Meters
      1. 2.2.1 Retrofit Add-On Module Key Functions
      2. 2.2.2 Rotary Flow Metrology Implementation
        1. 2.2.2.1 Optical and Magnetic Rotary Sensing
        2. 2.2.2.2 Inductive Rotary Sensing
      3. 2.2.3 IrDA Wake-Up Detection
    3. 2.3 Smart Rotary Water Meter
      1. 2.3.1 Water Meter Key Functions
      2. 2.3.2 Segment LCD with CapTouch Activation
      3. 2.3.3 Tamper Detection With TMAG5231
      4. 2.3.4 OMS Compliant wM-Bus Communication Sub-system
    4. 2.4 Thermal Meters (Heat / Cold)
      1. 2.4.1 Thermal Meter Key Functions
      2. 2.4.2 Analog Signal Chain for DTM
      3. 2.4.3 Remarkable, Fully Digital Design for DTM
        1. 2.4.3.1 I2C and SMBus-Compatible Digital Sensor for Thermal Meters
        2. 2.4.3.2 1-Wire Compatible Digital Sensor for Thermal Meters
    5. 2.5 Bluetooth Low Energy (BLE) in Flow Meters
    6. 2.6 Influence of CRA on Smart Flow Meters and Heat Cost Allocators
      1. 2.6.1 Achieving CRA Conformance Through Careful System Design
        1. 2.6.1.1 Tamper Detection as a Physical Security Argument
        2. 2.6.1.2 Secure Key Storage
        3. 2.6.1.3 Secure Boot
        4. 2.6.1.4 Authenticated wM-Bus Communication
        5. 2.6.1.5 Secure Firmware Update via Over-the-Air Download (OAD)
        6. 2.6.1.6 Security Event Logging
  6. 3Summary
  7. 4References

2 Smart Flow Meters and Sub-Metering Devices

The CC1312R SimpleLink™ High-Performance Sub-1 GHz Wireless MCU, designed and manufactured internally at TI, features several unique features: the ultra-low leakage TI CMOS 65nm process and the Ultra-low power Sensor Controller Engine (SCE) with 4KB of SRAM, which can run at either 2MHz or 24MHz. In addition, several dedicated analog peripherals, like programmable current source, analog comparator with internal reference DAC, pulse counter and Time-to-Digital Converter (TDC) are integrated and can be controlled by the SCE module.

State-of-the-art encryption capabilities as AES 128- and 256-bit cryptographic accelerator, TRNG, ECC and RSA public key hardware accelerator, SHA2 accelerator are also included, which makes this platform capable of addressing the upcoming CRA Regulations in EU.

The single-chip CC1312R and CC1314R10 Wireless MCUs, which integrate both a software-defined Sub-1GHz radio system and the programmable 16-bit SCE, are thus able to handle the three most popular rotary metrology methods as well as to control a segment LCD display, using the TI patented LCD control with GPIOs.