Overview
The ST75MMTR, produced by STMicroelectronics, is a METERS AND MORE standard compliant power line communication System on Chip (SoC). This device is designed to provide a turnkey solution for advanced metering infrastructures (AMI), sub-metering, Smart Grid applications, command and control networks, and smart home systems. Based on the ST industrial STarGRID™ SoC platform, the ST75MMTR combines a high-performing PHY processor and a protocol controller core, implementing the METERS AND MORE protocol stack. This ensures field-proven, bidirectional data transfer with robust communication efficiency, security, and reliability in various field conditions.
Key Specifications
| Parameter | Note | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| VCC Power supply voltage | - | 8 | 13 | 18 | V |
| I(VCC) RX Power supply current - Rx mode | VCCA externally supplied | - | 0.35 | 0.5 | mA |
| I(VCC) TX Power supply current - Tx mode, no load | VCCA externally supplied | - | 22 | 30 | mA |
| VCC UVLO_TL VCC undervoltage lockout low threshold | - | 6.1 | 6.5 | 6.95 | V |
| Temperature range | - | -40 | - | 85 | °C |
| Power amplifier maximum output current | - | - | - | 1000 | mA rms |
| UART interface data rate | - | - | - | 57.6 kbps | - |
Key Features
- High-performing, configurable DSP core for flexible PHY layer processing with B-PSK, Q-PSK, and 8-PSK modulations.
- Optional dual channel operation mode and peak noise avoidance algorithm mode.
- Embedded AES-128 encryption engine for data authentication and confidentiality services.
- Fully integrated analog front end (AFE) with ADC, DAC, digital transmission level control, PGA with automatic gain control, and high sensitivity receiver.
- Fully integrated single-ended power amplifier for line driving with up to 1 A rms, 14 V p-p output.
- Embedded temperature sensor and current control feature.
- Support for CENELEC EN50065, ARIB, and FCC part 15 compliant applications.
- Embedded zero-crossing detection for line phase recognition.
- Configurable CSMA algorithm compatible with EN50065-1 standard.
Applications
- METERS AND MORE standard compliant advanced metering infrastructures (AMI).
- Sub-metering and Smart Grid applications.
- Command and control networks.
- Smart home applications.
Q & A
- What is the primary function of the ST75MMTR?
The ST75MMTR is a power line communication System on Chip designed for advanced metering infrastructures, sub-metering, Smart Grid applications, and other related fields.
- What modulation schemes does the ST75MMTR support?
The ST75MMTR supports B-PSK, Q-PSK, and 8-PSK modulations.
- What is the maximum data rate of the UART interface?
The UART interface supports up to 57.6 kbps data rate.
- Does the ST75MMTR have built-in encryption capabilities?
Yes, it features an embedded AES-128 encryption engine for data authentication and confidentiality services.
- What is the temperature range of the ST75MMTR?
The device operates within a temperature range of -40°C to +85°C.
- What is the maximum output current of the power amplifier?
The power amplifier can deliver up to 1 A rms output current.
- Is the ST75MMTR compliant with any specific standards?
Yes, it is compliant with CENELEC EN50065, ARIB, and FCC part 15 standards.
- Does the ST75MMTR support dual channel operation?
Yes, it supports optional dual channel operation mode.
- What is the purpose of the embedded zero-crossing detection?
The embedded zero-crossing detection is for line phase recognition.
- How does the ST75MMTR manage communication robustness?
The device features smart retransmission management for communication robustness and bandwidth maximization.
