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Smart meter and powerline communication system-on-chip
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The STCOMET is a device that integrates a power line communication (PLC) modem, a high-performance application core and metrology functions.

The PLC modem architecture has been designed to target EN50065, FCC, ARIB compliant PLC applications. Together with the application core, it enables the STCOMET to support the PRIME, G1, G3, IEEE 1901.2, METERS AND MORE®and other narrow band PLC protocol specifications.

The metrology sub-system is suitable for EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22 and IEC 62053-23 compliant class1, class0.5 and class0.2 AC metering applications.

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Errata Sheet
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Key Features

  • Integrated differential PLC analog front-end
  • PGA with automatic gain control and ADC
  • Current DAC with transmission predriver
  • Digital transmission level control
  • Zero crossing comparator
  • Up to 500 kHz PLC signal bandwidth
  • Integrated dual line driver
  • 14 V p-p single ended, 28 V p-p differential output range
  • Very high linearity for EMC compliance
  • Externally configurable amplifier topology
  • 1 A rms max. current
  • Embedded overtemperature protection
  • Suitable for all PLC signals up to 500 kHz
  • Fully reprogrammable real-time engine (RTE) modem for PLC standards up to 500 kHz
  • High accuracy metering front-end
  • 3 independent 24-bit ΣΔ ADC channels
  • 3.6 kHz bandwidth
  • Dedicated DSP for turnkey calculation of metrology parameters
  • Direct access to 24-bit ΣΔ data
  • Integrated application core: ARM®32-bit Cortex™-M4F CPU
  • 96 MHz maximum frequency
  • 8-channel direct memory access controller
  • 8-region memory protection unit
  • Serial wire and JTAG interfaces
  • Cortex-M4 Embedded Trace Macrocell™
  • Up to 86 multiplexed GPIOs
  • 11 timers
  • 1 flexible CRC calculation unit
  • 5 USARTs (ISO 7816 compliant), 5 SPI, 3 I2C
  • 12-bit general purpose ADC with 6 channels
  • Cryptographic engine
  • AES 128/192/256 engine
  • True random number generator
  • Memories
  • 640 kB or 1 MB of embedded Flash
  • 128 kB of embedded SRAM
  • 8 kB of embedded shared RAM
  • Flexible static memory controller
  • Clock management
  • 24 MHz external crystal for system clock with internal QFS synthesizer
  • 32.768 kHz external crystal for RTC
  • Power management
  • 3.3 V and 8 - 18 V external supply voltages
  • 1.2 V and 5 V integrated linear regulators
  • Normal and low power modes
  • Real-time clock (RTC)
  • VBAT supply with battery health monitoring for RTC and backup registers
  • -40 °C to +85 °C operating temperature range

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS11236: Smart meter and powerline communication system-on-chip
1.0 1,046 KB

Application Notes

Description Version Size
AN4732: STCOMET smart meter and power line communication system-on-chip development kit
1.0 2,610 KB

User Manual

Description Version Size
UM1811: G3-PLC graphical user interface (GUI)
1.0 3,638 KB
UM1833: Getting started with the STCOMET development environment
1.0 869 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOutput CurrentAutomotive GradeOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STCOMET05EvaluationTQFP 176 20x20x1.0Tray_-No availability reported, please contact our Sales officeEcopack2-
STCOMET10ActiveTQFP 176 20x20x1.0Tray_-Distributor reported inventory date: 2015-10-02
Distributor NameRegionStockMin. order
ARROWOrder NowEUROPE108040
Ecopack2 (**)PDF

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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