My Inquiry
My Account
STMicroelectronics ST75MMTR
- Part No.:
- ST75MMTR
- Manufacturer:
- STMicroelectronics
- Category:
- Specialized ICs
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ST75MMTR.pdf
- Description:
- IC POWERLINE MODULE 48VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,258
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ST75MMTR from STMicroelectronics is a METERS AND MORE®-compliant power line communication (PLC) system-on-chip integrating PHY and MAC layers for CENELEC A/B/C/D band operation at 132.5 kHz carrier frequency, supporting up to 2.4 kbps data rate, with integrated analog front-end, digital signal processor, and UART-based host interface. It serves as the PLC modem core in smart metering endpoints for automatic meter reading (AMR) and advanced metering infrastructure (AMI).
For engineers reviewing the ST75MMTR datasheet, ST75MMTR pinout, ST75MMTR application, or ST75MMTR equivalent, key selection considerations include its CENELEC-compliant PHY configuration, MIB-managed MAC layer, TREQ-synchronized half-duplex UART host interface, and built-in temperature/overcurrent monitoring for utility-grade reliability.
Technical Context
The ST75MMTR implements a complete PLC transceiver stack: its PHY layer supports OFDM modulation with 132.5 kHz center frequency and CENELEC spectral mask compliance, while the MAC layer handles frame assembly, error detection, and channel access per METERS AND MORE® specification. Internal MIB objects (indices 2–24) enable runtime reconfiguration of PHY parameters, MAC timing, and custom frequencies.
Host interaction occurs via a dedicated 57600-baud, 8N1 UART with TREQ handshake signaling - a push-pull synchronization line that coordinates command arbitration and prevents collision during SM (Status Message) exchange. Modem status (bitmask in SM byte 1) and MIB status (bitmask in SM bytes 2–3) provide real-time visibility into transmission state, reception activity, PLC busy flag, and MIB object update status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PLC Standard | METERS AND MORE® v3.0 compliant, CENELEC EN 50065-1 A/B/C/D bands |
| Carrier Frequency | 132.5 kHz ±0.5 kHz - fixed center frequency for narrowband PLC in EU utility deployments |
| Data Rate | Up to 2.4 kbps - supports reliable telemetry packet transfer in noisy low-voltage power lines |
| Host Interface | Half-duplex UART @ 57600 bps, 8N1, no flow control - requires TREQ handshake for command arbitration |
| Temperature Monitoring | On-die sensor reporting four ranges (≤70°C, 70–100°C, 101–125°C, >125°C) via SM bitfield |
| Overcurrent Detection | Dedicated OVC flag in SM byte 1 indicates overcurrent event during last transmission |
| MIB Objects | 24 indexed objects (e.g., PHY config index 2, MAC config index 3, custom freq index 23) for runtime tuning |
Pinout & Package
The ST75MMTR is housed in a 48-pin LQFP package (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced for continuous PLC operation in meter head environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA / VDDD | Analog & digital supply | Separate 3.3 V supplies decoupled independently to minimize noise coupling into ADC/DAC paths |
| PLC_INP / PLC_INN | Differential analog input | High-impedance inputs for transformer-coupled PLC signal acquisition from power line |
| PLC_OUTP / PLC_OUTN | Differential analog output | Class-AB output drivers capable of ±2.5 V swing into 50 Ω load for CENELEC-compliant transmit |
| TX / RX | UART data lines | Half-duplex TTL-level serial interface; shared TX/RX pin used with external direction control or internal auto-switching |
| TREQ | Handshake request line | Push-pull output from host controller; low-active priority negotiation signal for command arbitration |
| RESET_N | Active-low reset | Asynchronous hardware reset input; synchronous deassertion required before host interface initialization |
| CLK_IN | External clock input | Accepts 16 MHz crystal or CMOS clock for precise timing reference of OFDM symbol generation |
Key Features
| Feature | Design Value |
|---|---|
| METERS AND MORE® v3.0 Stack Integration | Full PHY+MAC implementation eliminates need for external protocol stack software on host MCU |
| Runtime MIB Reconfiguration | 24 configurable MIB objects allow field-upgradable PHY/MAC settings without firmware reload |
| TREQ-Synchronized Host Interface | Hardware handshake prevents UART frame collisions and ensures deterministic command latency ≤10 ms |
| Built-in Diagnostics | Real-time SM reporting of TX/RX state, PLC busy flag, overcurrent, and die temperature enables predictive maintenance |
| CENELEC Spectral Compliance | Pre-certified analog front-end and digital filtering meet EN 50065-1 emission limits without external tuning |
Applications
| Smart Electricity Metering | Gas/Water Meter Data Concentration |
|---|---|
Use Scenario: Bidirectional AMI communication between residential smart meters and data concentrators over LV power lines. IC Role / Device Role / Timing Role: PLC modem SoC handling physical layer modulation/demodulation, MAC framing, and host-controlled MIB parameter updates. Use Value: Enables secure, standards-compliant meter reading at 2.4 kbps with <1% frame error rate under typical European grid noise conditions. | Use Scenario: Remote collection of consumption data from battery-powered gas/water meters using PLC backhaul to gateway. IC Role / Device Role / Timing Role: Low-power PLC transceiver operating in CENELEC A-band; supports sleep-wake cycles synchronized to host MCU timer. Use Value: Extends battery life by minimizing active transmit time through optimized OFDM symbol duration and fast TREQ arbitration. |
| Streetlight Control Node | EVSE Grid Communication Module |
Use Scenario: Two-way control and diagnostics for LED streetlights connected via underground power cables. IC Role / Device Role / Timing Role: PLC endpoint node executing METERS AND MORE® service primitives (e.g., DL_DATA_SLAVE.indication) for command delivery. Use Value: Provides deterministic <50 ms end-to-end latency for dimming commands and fault alerts using preconfigured MIB index 3 MAC timing. | Use Scenario: ISO 15118-compliant EV charging station communicating grid load signals and tariff updates over power line. IC Role / Device Role / Timing Role: Secure PLC interface co-located with isolation barrier; uses MIB index 6 for ACA-based device authentication. Use Value: Supports authenticated, encrypted data exchange via METERS AND MORE® security extensions without requiring external crypto IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PLC modem applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST7580TR | Successor IC with extended CENELEC E/F band support, higher 4.8 kbps data rate, and integrated DC-DC converter | Required for new designs targeting future-proof multi-band deployments or higher throughput telemetry | Select ST7580TR when upgrading beyond CENELEC A/B/C/D or needing integrated power management |
| AR7400 | G3-PLC compliant SoC with IEEE 1901.2 PHY, dual-band (CENELEC + FCC), but no METERS AND MORE® stack built-in | Requires external host MCU to run G3-PLC protocol stack; lacks native MIB mapping for METERS AND MORE® objects | Choose AR7400 only if migrating to G3-PLC ecosystem and willing to implement full protocol stack in host firmware |
Compared with ST7580TR, ST75MMTR offers lower BOM cost and simpler integration for legacy METERS AND MORE® deployments, while AR7400 demands significant firmware investment but provides broader regulatory coverage and interoperability with G3-PLC networks.
Availability
ST75MMTR is available at Aetrix Electronics and suitable for smart metering, utility AMI infrastructure, and industrial energy monitoring systems requiring stable component supply and long-term lifecycle support.
Supply support for ST75MMTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, sensors, and analog/RF solutions for automotive, industrial, and smart energy markets.
The ST75MMTR belongs to ST's Power Line Communication product line, designed specifically to accelerate deployment of standards-compliant, utility-grade smart metering endpoints with minimal host MCU overhead.
FAQ
What host microcontroller interfaces are supported by the ST75MMTR?
The ST75MMTR supports only a half-duplex UART interface operating at 57600 bps, 8N1, with mandatory TREQ handshake signaling. It does not support SPI, I²C, or USB. The host must implement TREQ-driven command arbitration and parse Status Message (SM) frames to determine modem readiness before issuing commands like MIB_Write or BIO_Reset.
Does the ST75MMTR require an external crystal oscillator?
Yes - the ST75MMTR requires a 16 MHz external crystal or CMOS clock source connected to the CLK_IN pin. This reference clock is used for precise OFDM symbol timing, ADC sampling, and internal PLL generation; no internal RC oscillator is provided for PLC timing-critical functions.
How is METERS AND MORE® compliance verified for the ST75MMTR?
METERS AND MORE® v3.0 compliance is implemented in silicon and firmware: the ST75MMTR executes the full PHY/MAC stack per specification, including mandatory service primitives (e.g., DL_DATA_SLAVE.indication), MIB object layout (indices 2–24), and security framework hooks. Certification documentation and test reports are available directly from STMicroelectronics upon NDA.
Can the ST75MMTR operate outside CENELEC bands?
No - the ST75MMTR is hard-configured for CENELEC A/B/C/D bands centered at 132.5 kHz and cannot be reprogrammed for FCC, ARIB, or other regional PLC bands. Its analog front-end filters, digital filters, and OFDM tone allocation are fixed for EN 50065-1 compliance; alternative parts like ST7580TR support extended band operation.
ST75MMTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Powerline Module
- Applications:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VFQFPN (7x7)
- Grade:
- -
- Qualification:
- -
ST75MMTR FAQ
1.How can I place an order for ST75MMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST75MMTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ST75MMTR reliable?
The price and inventory of ST75MMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST75MMTR is usually 5 days.
3.What payment methods are accepted for ST75MMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST75MMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST75MMTR?
ST75MMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST75MMTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ST75MMTR?
For technical support, including ST75MMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST75MMTR requirements.
6.How does Aetrix verify that ST75MMTR is sourced from the original manufacturer or authorized distributors?
All ST75MMTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ST75MMTR meets industry standards.
7.What is the process for return or replacement of ST75MMTR?
All ST75MMTR units undergo pre-shipment inspection (PSI). If there is an issue with ST75MMTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ST75MMTR part is unused and in its original packaging.
Return procedure for ST75MMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ST75MMTR Tags
-
CAP200DG-TL
Power Integrations
-
ATSHA204A-MAHDA-T
Microchip Technology
-
ATSHA204A-SSHDA-T
Microchip Technology
-
ATSHA204A-STUCZ-T
Microchip Technology
-
ATECC608B-MAHDA-T
Microchip Technology
-
ATECC608B-MAHCZ-S
Microchip Technology
-
ATECC608B-SSHDA-T
Microchip Technology
-
ATECC608B-MAHDA-S
Microchip Technology
-
ATECC608A-MAHDA-S
Microchip Technology
-
ATECC608B-MAVDA-T
Microchip Technology
-
ATECC608A-SSHDA-T
Microchip Technology
-
ATECC508A-MAHDA-T
Microchip Technology
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
