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Texas Instruments MSP430F6749IPEU
- Part No.:
- MSP430F6749IPEU
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F6749IPEU.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,720
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Product details
Overview
MSP430F6749IPEU from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring four 24-bit sigma-delta ADCs, 512KB flash, 32KB RAM, and LCD driver supporting up to 320 segments. It delivers <0.1% energy measurement accuracy over 2000:1 dynamic range and meets ANSI C12.20 and IEC 62053 standards in utility metering applications.
For engineers reviewing the MSP430F6749IPEU datasheet, MSP430F6749IPEU pinout, MSP430F6749IPEU application, or MSP430F6749IPEU equivalent, key selection criteria include its 128-pin LQFP (PEU) package with 90 GPIOs, ultra-low-power LPM3.5 mode (0.34 µA), integrated AES-128 encryption, and support for current transformers, Rogowski coils, and shunt sensors in revenue-grade metering systems.
Technical Context
The MSP430F6749IPEU implements a dedicated analog front-end with four independent SD24_B sigma-delta modulators for phase/neutral current and voltage sensing, each with differential inputs and programmable gain. Its 25-MHz CPU includes a 32-bit hardware multiplier optimized for real-time energy calculations using TI's certified energy measurement software library.
It integrates dual power domains (AVCC/DVCC), auxiliary supplies (AUXVCC1–3) for backup subsystem operation, and a tamper-resistant RTC with crystal offset calibration. Communication is handled via six eUSCI modules configurable as UART, SPI, or I²C - enabling AMR/AMI connectivity without external transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 512 KB single-cycle access - enables full firmware, calibration tables, and tariff logic storage without external memory. |
| RAM | 32 KB single-cycle access - supports real-time accumulation of active/reactive energy, demand registers, and communication buffers. |
| Sigma-Delta ADCs | 4 × 24-bit SD24_B converters - provides simultaneous high-resolution sampling of phase A/B/C and neutral currents/voltages. |
| Dynamic Range Accuracy | <0.1% over 2000:1 - ensures metrological compliance across load conditions from light-load standby to full-scale current. |
| Low-Power Mode LPM3.5 | 0.34 µA at 3 V - sustains RTC and critical registers during AC mains failure with minimal backup battery drain. |
| LCD Driver | Up to 320 segments with contrast control - drives multi-digit, multi-language utility meter displays directly. |
| CPU Speed | 25 MHz with 32-bit hardware multiplier - executes TI energy library calculations (kWh, kVARh, THD, harmonics) in deterministic time. |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | Low-frequency crystal oscillator input/output | Supports 32.768-kHz crystal for RTC with temperature-compensated calibration; required for metrological timekeeping. |
| SD0P0–SD3N0 | Differential sigma-delta ADC inputs | Four dedicated analog input pairs for phase/neutral current and voltage sensing with internal PGA and reference routing. |
| VREF | External reference voltage input | Accepts precision 2.5-V reference for SD24_B modulators; enables stable metrology-grade conversion independent of supply rails. |
| COM0–COM7 | LCD segment commons | Eight common outputs drive multiplexed LCD glass; used with P1.6/P1.7 and P5.x pins to support 320-segment display. |
| AUXVCC1–AUXVCC3 | Backup subsystem power supplies | Isolated auxiliary rails powering RTC, BSL, and tamper detection circuitry during main power loss. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase shift in real time, preserving power factor accuracy without external analog components. |
| Password-protected RTC | Prevents unauthorized clock manipulation; includes crystal aging compensation and temperature-based offset adjustment. |
| Hardware AES-128 module | Accelerates secure firmware updates and data encryption for AMI deployments compliant with DLMS/COSEM. |
| Four-quadrant energy measurement | Calculates active/reactive energy in all quadrants per phase - essential for bidirectional grid-tied metering and net metering. |
| Pulse output pins | Dedicated active/reactive energy pulse outputs enable direct connection to LED indicators or external calibration equipment. |
Applications
| Smart Electricity Meter | Revenue-Grade Energy Monitor |
|---|---|
Use Scenario: Installed in residential/commercial 3-phase 4-wire service entrances to measure kWh/kVARh for billing and demand response. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time energy calculation, tariff switching, secure data logging, and optical/RF communication interface management. Use Value: Meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S accuracy requirements with single calibration across 40–70 Hz line frequency. | Use Scenario: Embedded in industrial submetering panels to track energy consumption by department, machine, or process line. IC Role / Device Role / Timing Role: High-precision energy accumulator with harmonic analysis, THD reporting, and time-of-use data storage. Use Value: Four independent SD24_B ADCs enable concurrent measurement of three phases plus neutral, eliminating time-multiplexing errors in unbalanced loads. |
| Anti-Tamper Utility Meter | AMI Gateway Node |
Use Scenario: Deployed in theft-prone regions where physical tampering (magnet, short, reverse polarity) must be detected and logged. IC Role / Device Role / Timing Role: Integrated tamper detection engine monitoring RTC clock integrity, supply voltage anomalies, case opening, and magnetic field via dedicated pins. Use Value: Hardware-enforced password protection and encrypted event logs prevent post-event data alteration or clock rollback attacks. | Use Scenario: Used in neighborhood-level concentrators aggregating data from multiple meters before forwarding to utility head-end systems. IC Role / Device Role / Timing Role: Protocol gateway handling DLMS/COSEM parsing, security layer (AES-128), and dual-interface bridging (M-Bus to RF mesh or PLC). Use Value: Six configurable eUSCI ports allow simultaneous M-Bus slave, RF transceiver control, and local debug UART - reducing BOM count and PCB complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6769IPEU | 6 SD24_B ADCs (vs. 4), identical flash/RAM/package; lacks SD4P0/SD4N0/SD5P0/SD5N0 pins. | Supports additional voltage/current channels for advanced diagnostics or 4-wire delta configurations. | Select when needing >4 analog measurement paths while retaining same software stack and footprint. |
| MSP430F6748IPEU | Same 4 SD24_B ADCs and 512KB flash, but only 16KB RAM (vs. 32KB); identical pinout and peripherals. | Suitable for cost-optimized meters with reduced data logging depth or simplified tariff schemes. | Choose for lower-cost variants where full 32KB RAM is not required for firmware or buffer allocation. |
Compared with MSP430F6749IPEU, the MSP430F6769IPEU adds two sigma-delta channels for enhanced channel scalability, while the MSP430F6748IPEU reduces RAM to lower system cost - both maintain pin compatibility and share the same energy library and certification path.
Availability
MSP430F6749IPEU is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade energy monitors, anti-tamper utility meters, and AMI gateway nodes requiring stable component supply, long-term lifecycle support, and metrological traceability.
Supply support for MSP430F6749IPEU 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
Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and digital signal processing technologies with leadership in low-power microcontrollers.
The MSP430F674x product line is engineered specifically for revenue-grade polyphase metering, integrating metrology-grade analog front-ends, secure firmware execution, and ultra-low-power operation to minimize backup power requirements in utility infrastructure.
FAQ
What metrology standards does the MSP430F6749IPEU comply with?
The MSP430F6749IPEU meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S accuracy requirements for active and reactive energy measurement. Its <0.1% error over 2000:1 dynamic range is validated across 40–70 Hz line frequencies using a single calibration point - a key enabler for global utility certification.
How many analog input channels does the MSP430F6749IPEU support for energy measurement?
The MSP430F6749IPEU integrates four independent 24-bit sigma-delta ADCs (SD24_B) with differential inputs and programmable gain. These support up to four simultaneous analog measurement paths - typically configured for phase A/B/C current and neutral current, or combined with voltage sensing via internal muxing and reference routing.
Does the MSP430F6749IPEU include hardware encryption capabilities?
Yes, the MSP430F6749IPEU includes a dedicated hardware AES-128 encryption module that accelerates cryptographic operations for secure firmware updates, data payload encryption, and DLMS/COSEM protocol compliance - offloading computation from the CPU and ensuring deterministic timing for real-time metering tasks.
What is the lowest power consumption mode supported by the MSP430F6749IPEU?
The MSP430F6749IPEU achieves 0.34 µA in RTC mode (LPM3.5) at 3 V, retaining real-time clock operation, backup RAM, and tamper-detection circuitry during AC mains failure. This ultra-low standby current extends battery life in backup power systems and enables >10-year operation on coin-cell batteries.
Is the MSP430F6749IPEU pin-compatible with other devices in the MSP430F67xx family?
Yes, the MSP430F6749IPEU shares the identical 128-pin LQFP (PEU) package and pinout with all MSP430F67xxIPEU variants, including MSP430F6769IPEU and MSP430F6779IPEU. Signal mapping, power domains, and peripheral assignments are consistent - enabling hardware reuse across performance tiers within the same form factor.
MSP430F6749IPEU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 4x24b Sigma Delta Converter
- Number of I/O:
- 90
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F6749IPEU FAQ
1.How can I place an order for MSP430F6749IPEU through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6749IPEU 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 MSP430F6749IPEU reliable?
The price and inventory of MSP430F6749IPEU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6749IPEU is usually 5 days.
3.What payment methods are accepted for MSP430F6749IPEU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6749IPEU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6749IPEU?
MSP430F6749IPEU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6749IPEU 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 MSP430F6749IPEU?
For technical support, including MSP430F6749IPEU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6749IPEU requirements.
6.How does Aetrix verify that MSP430F6749IPEU is sourced from the original manufacturer or authorized distributors?
All MSP430F6749IPEU 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 MSP430F6749IPEU meets industry standards.
7.What is the process for return or replacement of MSP430F6749IPEU?
All MSP430F6749IPEU units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6749IPEU, 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 MSP430F6749IPEU part is unused and in its original packaging.
Return procedure for MSP430F6749IPEU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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