Powerline communication and application system-on-chip

The STCOM is a device that integrates a power line communication (PLC) modem and a high-performance application core.

The PLC modem architecture has been designed to target the EN50065, FCC, ARIB compliant PLC applications. Together with the application core, it enables the STCOM to support the ITU-T G.9001, ITU-T G.9903 (G3-PLC®), ITU-T G.9904 (PRIME), IEEE 1901.2, IEC 61334-5-1 (G1), CLC/TS 50568 (METERS AND MORE®) and other narrow band PLC protocol specifications.

The STCOM basic block diagram is shown in Figure 1.

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
  • 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 I2 C
    • 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


Technical Documentation

Product Specifications
Description Version Size
DS11346 DS11346: Powerline communication and application system-on-chip 3.0 704 KB
Application Notes
Description Version Size
AN4875 AN4875: STCOMET smart meter and power line communication system-on-chip G3-PLC characterization 1.0 2 MB
User Manuals
Description Version Size
UM1953 UM1953: STCOMET boot and FW upgrade 1.0 841 KB

Publications and Collaterals

Description Version Size
STCOMET: Future-proof smart grid solutions FLSTCOMET1016 285 KB

Tools and Software

Evaluation Tools
Solution Evaluation Tools
Support & Community
Featured Products

Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STCOM10 TQFP 176 20x20x1.0 Tray Active - - 5A002A1A EAR99 SINGAPORE MORE INFO No availability reported, please contact our Sales office

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STCOM05 ActiveTQFP 176 20x20x1.0IndustrialEcopack2
STCOM10 ActiveTQFP 176 20x20x1.0IndustrialEcopack2

(**) The Material Declaration forms available on st.com 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.