Single-phase with tamper monitoring energy metering demonstration board with CT and shunt based on the STPM33

The STPM33 energy metering evaluation board is a class 0.2, single-phase meter which includes tamper monitoring, CT and shunt current sensors for power line systems with Vnom= 140 to 300 V(RMS), Inom/ Imax= 5/100 A(RMS), flin= 50/60 Hz ± 10% and Tamb= -40 to +85 °C.

Measured active/reactive power can be output from two programmable LEDs on the board.

The board can be interfaced with a PC running evaluation software through an isolated RS232 port, or through the STEVAL-IPE023V1 USB isolated interface tool for configuration and data reading.

The board also has SPI/UART pins available to interface a microcontroller for application development.

Key Features

  • 0.2% accuracy single-phase meter with tamper monitoring
  • Vnom(RMS) = 140 to 300 V, Inom /Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
  • Tamper detection though neutral current monitoring
  • Connector for USB isolated hardware programmer tool STEVAL-IPE023V1 and PC GUI
  • RS232 and UART isolated connectors to PC GUI
  • SPI/UART switch for device peripheral selection
  • 2 programmable LEDs on board
  • Digital expansion to external system-on-chip or MCU
  • 3.3 V power supply: external or through STEVAL-IPE023V1 isolated USB board
  • IEC61000 standard compliant
  • RoHS compliant




Technical Documentation

Product Specifications
Description Version Size
DB2284 DB2284: Single-phase energy metering evaluation board with tamper monitoring, CT and shunt current sensor based on the STPM33 1.0 527 KB
Application Notes
Description Version Size
AN4470 AN4470: The STPM3x and the STCOMET application calibration 3.0 757 KB
User Manuals
Description Version Size
UM1748 UM1748: EVALSTPM34, EVALSTPM33, EVALSTPM32 evaluation board 2.0 976 KB
UM2118 UM2118: Metrology firmware for the STM32F407VG and the STPM32 devices 1.0 905 KB
UM1719 UM1719: The STPM3x evaluation software 1.2 1 MB

Presentations & Training Material

Description Version Size
STPM32, STPM33, STPM34 Smart Metering ICs 1.0 825 KB

Hardware Resources

Board Manufacturing Specifications
Description Version Size
Bill of Materials
Description Version Size
Schematic Pack
Description Version Size

Publications and Collaterals

Description Version Size
STPM32, STPM33, STPM34 - Taking care of every milliwatt 10.2016 1 MB


License Agreement
Description Version Size
Evaluation products license agreement 1.4 128 KB

Tools and Software

Embedded Software
Evaluation Tool Software
Support & Community
Featured Products
Featured Applications

Sample & Buy

Part Number Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
EVALSTPM33 STPM33 Active 45 1 NEC EAR99 - 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**
EVALSTPM33 ActiveCARD-Ecopack1

(**) 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.