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Texas Instruments MSP430F67751AIPEU
- Part No.:
- MSP430F67751AIPEU
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F67751AIPEU.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,679
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Product details
Overview
MSP430F67751AIPEU from Texas Instruments is a polyphase metering SoC designed for high-accuracy 3-phase energy measurement in utility-grade smart meters. It integrates seven 24-bit sigma-delta ADCs (0.1% accuracy over 2000:1 dynamic range), a 25-MHz CPU with 32-bit multiplier, 128KB flash/16KB RAM, and LCD controller supporting up to 320 segments - all in a 128-pin LQFP package.
For engineers reviewing the MSP430F67751AIPEU datasheet, MSP430F67751AIPEU pinout, MSP430F67751AIPEU application, or MSP430F67751AIPEU equivalent, key selection criteria include ANSI C12.20/IEC 62053 compliance, 4-quadrant per-phase power calculation, RTC with tamper detection, and support for CT/Rogowski/shunt sensors in 3-phase 4-wire star topologies.
Technical Context
The MSP430F67751AIPEU implements a dedicated metrology subsystem with independent SD24_B modulators per phase input, enabling simultaneous sampling and digital phase correction for current transformers. Its analog front-end includes programmable gain and differential inputs optimized for ±2.5 V or ±1.25 V full-scale ranges.
Digital processing leverages three-channel DMA, 16-bit CRC, and four Timer_A modules (with nine capture/compare registers) to offload real-time energy accumulation and pulse generation. Communication is handled by four eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (SPI/I²C) interfaces, supporting HART, DLMS, and PLC backhaul protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 128 KB - sufficient for full Energy Measurement Library + custom tariff logic + secure boot code |
| RAM | 16 KB - supports concurrent real-time metrology calculations, RTC logging, and communication buffers |
| Sigma-Delta ADCs | 7 × 24-bit - enables simultaneous measurement of 3-phase voltage/current + neutral + reference channels |
| ADC Accuracy | < 0.1% error over 2000:1 dynamic range - meets Class 0.2 metering requirements per IEC 62053-22 |
| RTC Power Consumption | 0.34 µA in LPM3.5 - maintains timekeeping during AC mains failure with minimal backup battery drain |
| Low-Power Standby | 2.1 µA in LPM3 - enables long-term data retention and wake-up in < 5 µs for event-triggered measurements |
| Package | 128-pin LQFP (PEU), 20 mm × 14 mm - provides 90 GPIOs including 8 COM lines for 320-segment LCD drive |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch. Requires external connection between VDSYS1/VDSYS2 and VASYS1/VASYS2 pairs for proper analog/digital domain isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | 32.768 kHz crystal oscillator terminals | Drive RTC and low-frequency timing; require external 12.5 pF load capacitors (RTCCAP0/RTCCAP1) |
| VREF | Reference voltage input | Accepts external 2.5 V reference for SD24_B modulators; enables ratiometric measurement stability |
| SD0P0–SD3N0 | Delta-sigma ADC input pairs | Four differential analog inputs for phase A/B/C and neutral current sensing (CT/shunt) |
| SD4P0–SD6N0 | Delta-sigma ADC input pairs | Three differential inputs for phase A/B/C voltage sensing (resistive divider) |
| COM0–COM7 | LCD common outputs | Drive up to 8 commons for multiplexed 320-segment LCD display with contrast control |
| eUSCI_A0–A3 | Universal serial interfaces | Support UART (modem/HART), IrDA (infrared port), and SPI (sensor/EEPROM) simultaneously |
Key Features
| Feature | Design Value |
|---|---|
| 4-Quadrant energy calculation | Enables bidirectional active/reactive power measurement per phase for net metering and grid export compliance |
| Password-protected RTC with tamper detection | Prevents unauthorized clock manipulation; triggers non-volatile event log on cover removal or voltage glitch |
| Dedicated pulse output pins | Hardware-generated kWh/kVArh pulses simplify calibration and enable direct LED or optocoupler interfacing |
| Digital phase correction | Compensates CT phase lag in firmware without external analog components, reducing BOM cost |
| Temperature-compensated energy measurement | On-chip temperature sensor feeds correction algorithm to maintain accuracy across –40°C to +85°C operating range |
Applications
| Smart Electricity Meter | Revenue-Grade Submeter |
|---|---|
|
Use Scenario: Installed in residential/commercial 3-phase 4-wire service entrance for utility billing. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time active/reactive energy accumulation, tariff switching, and secure data logging. Use Value: Meets ANSI C12.20 Class 0.2 accuracy with single calibration across 40–70 Hz line frequency - eliminates field recalibration. |
Use Scenario: Embedded in HVAC or lighting panels to monitor tenant-level energy consumption. IC Role / Device Role / Timing Role: Standalone energy calculator with LCD display and RS-485 (via eUSCI_A2) for BACnet MS/TP integration. Use Value: 0.34 µA RTC mode extends coin-cell battery life beyond 10 years while retaining time/date during outages. |
| Grid Edge Monitoring Node | Tamper-Resistant Prepayment Meter |
|
Use Scenario: Deployed at distribution transformer secondary to track voltage sag/swell and harmonic distortion. IC Role / Device Role / Timing Role: High-resolution waveform capture engine using SD24_B oversampling and DMA to SRAM buffer. Use Value: Seven independent 24-bit ADCs allow synchronized sampling of all six phase-to-neutral voltages and currents. |
Use Scenario: Integrated into pay-as-you-go meters requiring cryptographic security and physical tamper response. IC Role / Device Role / Timing Role: Secure runtime environment with password-protected registers, RTC tamper flags, and encrypted EEPROM access. Use Value: Integrated security modules prevent firmware extraction and enable AES-128 encryption of stored credit balances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67761AIPEU | 256 KB flash / 16 KB RAM - doubles program space for advanced tariffing or DLMS stack | Same metrology accuracy and pinout; suitable when firmware complexity exceeds 128 KB capacity | Select when implementing multi-tariff, prepaid, or DLMS/COSEM protocol stacks requiring >128 KB code space |
| MSP430F67651AIPEU | 6 SD24_B converters (vs. 7); no SD4/SD5/SD6 inputs - lacks dedicated voltage channel inputs | Requires external signal conditioning for phase voltage measurement; not suitable for direct 3-phase voltage sensing | Choose only if design uses external voltage dividers feeding shared ADC inputs, accepting reduced channel independence |
Compared with MSP430F67761AIPEU, the MSP430F67751AIPEU trades flash capacity for lower BOM cost while retaining identical metrology performance; versus MSP430F67651AIPEU, it adds one dedicated voltage ADC channel enabling fully integrated 3-phase voltage monitoring without external muxing.
Availability
MSP430F67751AIPEU is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade submetering, and grid edge monitoring requiring stable component supply, long-term lifecycle support, and TI-qualified metrology performance.
Supply support for MSP430F67751AIPEU 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 connectivity technologies with leadership in low-power microcontrollers and precision metrology solutions.
The MSP430F67751AIPEU belongs to the MSP430™ Metrology and Monitoring MCU portfolio, engineered specifically for ANSI/IEC-compliant energy measurement in utility smart meters and industrial power monitoring systems.
FAQ
What metrology standards does the MSP430F67751AIPEU meet?
The MSP430F67751AIPEU meets or exceeds ANSI C12.20 and IEC 62053-21/-22 Class 0.2 accuracy requirements for active and reactive energy measurement. Its 24-bit sigma-delta ADC architecture achieves < 0.1% error over 2000:1 dynamic range, validated across 40–70 Hz line frequencies with single calibration - a core requirement for revenue-grade meter certification.
Does the MSP430F67751AIPEU support direct 3-phase voltage sensing?
Yes, the MSP430F67751AIPEU supports direct 3-phase voltage sensing via three dedicated differential inputs: SD4P0/SD4N0 (Phase A), SD5P0/SD5N0 (Phase B), and SD6P0/SD6N0 (Phase C). These are independent from current-sensing channels, enabling true simultaneous voltage and current sampling required for accurate power factor and harmonic analysis in the MSP430F67751AIPEU.
How does the MSP430F67751AIPEU handle tamper detection and secure timekeeping?
The MSP430F67751AIPEU integrates a password-protected RTC with dedicated tamper detect pins (e.g., RTCCLK, TACLK) that trigger non-volatile event logging on cover removal, voltage glitch, or clock manipulation. Its RTC operates at 0.34 µA in LPM3.5 mode, preserving time/date during AC mains failure - a critical feature for audit trails in the MSP430F67751AIPEU.
What LCD capabilities does the MSP430F67751AIPEU provide?
The MSP430F67751AIPEU includes an integrated LCD controller supporting up to 320 segments using 8 commons (COM0–COM7) and 40 segment lines. It features programmable contrast control, internal charge pump, and low-power operation (3 µA in LPM3 during mains failure), enabling direct drive of segmented displays without external bias circuitry in the MSP430F67751AIPEU.
Can the MSP430F67751AIPEU generate hardware-calibrated energy pulses?
Yes, the MSP430F67751AIPEU provides dedicated pulse output pins (e.g., P1.6/COM2, P1.7/COM3) configured for active and reactive energy pulses. These are generated in hardware by the metrology engine with programmable pulse width and ratio (e.g., 1000 imp/kWh), eliminating CPU overhead and ensuring deterministic timing - essential for field calibration of the MSP430F67751AIPEU.
MSP430F67751AIPEU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tube
- 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, 7x24b Sigma Delta Converter
- Number of I/O:
- 90
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K 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:
MSP430F67751AIPEU FAQ
1.How can I place an order for MSP430F67751AIPEU through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67751AIPEU 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 MSP430F67751AIPEU reliable?
The price and inventory of MSP430F67751AIPEU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67751AIPEU is usually 5 days.
3.What payment methods are accepted for MSP430F67751AIPEU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67751AIPEU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67751AIPEU?
MSP430F67751AIPEU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67751AIPEU 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 MSP430F67751AIPEU?
For technical support, including MSP430F67751AIPEU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67751AIPEU requirements.
6.How does Aetrix verify that MSP430F67751AIPEU is sourced from the original manufacturer or authorized distributors?
All MSP430F67751AIPEU 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 MSP430F67751AIPEU meets industry standards.
7.What is the process for return or replacement of MSP430F67751AIPEU?
All MSP430F67751AIPEU units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67751AIPEU, 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 MSP430F67751AIPEU part is unused and in its original packaging.
Return procedure for MSP430F67751AIPEU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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