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Texas Instruments MSP430F67751IPZ
- Part No.:
- MSP430F67751IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67751IPZ.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,392
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Product details
Overview
MSP430F67751IPZ from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electronic watt-hour meters. It integrates a 25-MHz MSP430 CPU with 32-bit multiplier, seven 24-bit sigma-delta ADCs (≤0.1% accuracy over 2000:1 dynamic range), 128KB flash, 16KB RAM, LCD controller (320 segments), and dual power supply management - enabling precise energy measurement in utility metering applications compliant with ANSI C12.20 and IEC 62053.
For engineers reviewing the MSP430F67751IPZ datasheet, MSP430F67751IPZ pinout, MSP430F67751IPZ application, or MSP430F67751IPZ equivalent, key selection considerations include its 100-pin LQFP (PZ) package with 62 GPIOs, ultra-low-power operation (0.18 µA in LPM4.5), dedicated pulse output pins for active/reactive energy calibration, and integrated security modules for anti-tamper protection in smart meter deployments.
Technical Context
The MSP430F67751IPZ implements a multi-channel sigma-delta analog front end with differential inputs, programmable gain, and digital phase correction for current transformers - supporting simultaneous three-phase plus neutral power measurement. Its AFE includes dedicated SD24_B converters per phase and an auxiliary 10-bit ADC for system monitoring (supply voltage, temperature).
It executes TI's certified energy measurement software library in firmware, delivering calibrated kWh, kVARh, RMS voltage/current, power factor, and harmonic analysis. The device uses dual-domain power management (DVCC/AVCC/VASYS/VCORE) and automatic supply switching to sustain RTC and backup RAM during AC mains failure while consuming only 3 µA in LPM3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 128 KB single-cycle flash - sufficient for full energy measurement firmware + communication stack + tariff logic. |
| RAM | 16 KB single-cycle RAM - supports real-time accumulation buffers, FFT computation, and secure credential storage. |
| Sigma-Delta ADCs | 7 × 24-bit SD24_B converters - enables concurrent measurement of 3-phase voltages, 3-phase currents, and neutral current with <0.1% error. |
| Line Frequency Range | 40–70 Hz with single calibration - eliminates need for field recalibration across global utility grids. |
| Low-Power Modes | LPM3.5 (RTC mode): 0.34 µA @ 3 V; LPM4.5 (shutdown): 0.18 µA @ 3 V - extends battery life during mains outage. |
| LCD Driver | Supports up to 320 segments with contrast control - drives high-resolution meter displays without external controllers. |
| Communication Interfaces | 6 eUSCI ports configurable as UART/I²C/SPI - supports PLC, RF, optical, and wired AMR/AMI modules simultaneously. |
Pinout & Package
Package: 100-pin LQFP (PZ), 14 mm × 14 mm, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | Low-frequency crystal oscillator input/output | Drives 32.768-kHz RTC crystal; enables temperature-compensated timekeeping with crystal offset calibration. |
| SD0P0–SD6N0 | Differential sigma-delta analog inputs | Seven independent SD24_B channel pairs - configured for phase A/B/C voltage/current + neutral current sensing. |
| PULSE0 / PULSE1 | Dedicated energy pulse outputs | Open-drain outputs for active/reactive energy calibration pulses - meet ANSI C12.20 pulse width/timing requirements. |
| COM0–COM7 | LCD common segment drivers | Eight common outputs supporting multiplexed 320-segment LCD - reduces display component count and BOM cost. |
| AUXVCC1–AUXVCC3 | Backup subsystem supplies | Independent auxiliary rails powering RTC, backup RAM, and tamper detection - maintain functionality during main supply loss. |
Key Features
| Feature | Design Value |
|---|---|
| Four-quadrant energy measurement | Enables bidirectional power flow accounting (import/export) per phase - required for net-metering and distributed generation support. |
| Password-protected RTC with crystal offset calibration | Prevents unauthorized clock manipulation and maintains ±1 ppm accuracy over temperature - critical for revenue-grade time-of-use billing. |
| Integrated anti-tamper modules | Detects case opening, magnetic interference, and voltage anomalies - triggers secure event logging and data erasure per IEC 62053-31. |
| Digital phase correction for CTs | Compensates for current transformer phase lag in software - eliminates need for external phase-shift networks and improves PF accuracy at low loads. |
| Flexible power supply with auto-switching | Seamlessly transitions between mains, supercapacitor, and battery sources - ensures uninterrupted meter operation during grid outages. |
Applications
| Smart 3-Phase Revenue Meter | Industrial Energy Monitor |
|---|---|
Use Scenario: Installed in commercial/industrial substations for billing-grade energy consumption tracking across three phases and neutral. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time kWh/kVARh calculation, tariff switching, secure data logging, and HAN communication. Use Value: Meets ANSI C12.20 Class 0.2 accuracy with single-point calibration across 40–70 Hz - reduces factory test time and field commissioning cost. | Use Scenario: Embedded in panel-mounted energy dashboards for real-time load profiling and demand response in manufacturing plants. IC Role / Device Role / Timing Role: High-precision measurement engine feeding data to local HMI and cloud gateway via UART/I²C; RTC enables time-stamped event capture. Use Value: Ultra-low standby current (0.34 µA in LPM3.5) allows >5-year battery life on coin cell - eliminates maintenance visits for display-powered monitors. |
| AMI Endpoint Node | Tamper-Resistant Utility Meter |
Use Scenario: Core processing unit in cellular/NB-IoT-enabled smart meters transmitting consumption data hourly to utility head-end systems. IC Role / Device Role / Timing Role: Host processor managing metrology, secure boot, OTA firmware updates, and encrypted communication stacks (DLMS/COSEM). Use Value: Six configurable eUSCI ports support concurrent PLC (UART), RF module (SPI), and optical port (I²C) - simplifies hardware design for multi-interface AMI nodes. | Use Scenario: Deployed in unattended outdoor locations where physical and electromagnetic tampering attempts are common. IC Role / Device Role / Timing Role: Security-enforced metrology controller with tamper detect pins, password-protected registers, and secure erase on breach. Use Value: Integrated tamper modules reduce bill-of-materials by eliminating discrete sensors and microcontrollers - lowers total meter cost while meeting IEC 62053-31 Level 2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67761IPZ | 256 KB flash, 16 KB RAM - 128 KB more flash for extended firmware features or larger communication stacks. | Same pinout and peripheral set - suitable when additional code space is needed for DLMS/COSEM or advanced diagnostics. | Select MSP430F67761IPZ if firmware complexity exceeds 128 KB or future feature expansion is planned. |
| MSP430F67651IPZ | 128 KB flash, 16 KB RAM, but only six SD24_B converters - lacks one sigma-delta channel versus MSP430F67751IPZ. | Not suitable for neutral-current measurement or four-wire star configurations requiring full 7-channel AFE. | Choose MSP430F67651IPZ only for simplified 3-phase delta meters without neutral monitoring. |
Compared with MSP430F67761IPZ, the MSP430F67751IPZ trades flash capacity for cost-sensitive meter designs, while retaining identical AFE capability and security features; versus MSP430F67651IPZ, it adds a seventh SD24_B channel essential for neutral current compliance in ANSI/IEC 4-wire installations.
Availability
MSP430F67751IPZ is available at Aetrix Electronics and suitable for smart metering, utility infrastructure modernization, and industrial energy analytics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430F67751IPZ 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 and embedded processing technologies, with leadership in low-power microcontrollers and precision metrology solutions.
The MSP430F677x1 product line was engineered specifically for revenue-grade polyphase electricity meters - integrating metrology-grade AFE, secure real-time processing, and ultra-low-power operation to replace multi-chip meter designs with a single SoC.
FAQ
What is the maximum dynamic range and accuracy of the MSP430F67751IPZ's sigma-delta ADCs?
The MSP430F67751IPZ features seven 24-bit SD24_B sigma-delta converters achieving <0.1% error over a 2000:1 dynamic range for phase current measurements. This performance meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S requirements. Accuracy is maintained across the full 40–70 Hz line frequency range using a single calibration point - verified in TI's production test flow for every MSP430F67751IPZ unit.
Does the MSP430F67751IPZ support neutral current measurement?
Yes, the MSP430F67751IPZ supports neutral current measurement via its seventh SD24_B sigma-delta converter channel (SD6P0/SD6N0). This enables full four-wire star topology metering per ANSI C12.20 and IEC 62053-21 standards. The device performs four-quadrant measurement on all channels, including neutral, allowing accurate import/export energy accounting even under unbalanced load conditions.
What low-power modes are available on the MSP430F67751IPZ and their typical current draw?
The MSP430F67751IPZ offers multiple low-power modes: LPM3 (standby) draws 2.1 µA @ 3 V with fast wake-up (<5 µs); LPM3.5 (RTC-only) consumes 0.34 µA @ 3 V; and LPM4.5 (shutdown) draws just 0.18 µA @ 3 V. These modes are enabled by separate power domains (DVCC, AVCC, AUXVCC) and retain RTC time, backup RAM, and tamper status - critical for maintaining meter functionality during AC mains failure.
How many communication interfaces does the MSP430F67751IPZ support, and are they configurable?
The MSP430F67751IPZ integrates six enhanced Universal Serial Communication Interfaces (eUSCI), each configurable as UART, SPI, or I²C. Four eUSCI_A modules support UART/IrDA/SPI, and two eUSCI_B modules support SPI/I²C. This flexibility allows concurrent use of PLC (UART), RF module (SPI), and optical port (I²C) - all supported natively without external level shifters or protocol bridges in the MSP430F67751IPZ design.
Is the MSP430F67751IPZ pin-compatible with other devices in the F677x1 family?
Yes, the MSP430F67751IPZ is pin-compatible with all 100-pin LQFP (PZ) variants in the MSP430F677x1 family, including MSP430F67761IPZ, MSP430F67771IPZ, and MSP430F67781IPZ. They share identical pinouts, power domains, and peripheral mappings - enabling hardware reuse across meter tiers (e.g., basic vs. premium models) while varying only flash/RAM size and SD24_B channel count in firmware configuration.
MSP430F67751IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tray
- 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:
- 62
- 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:
MSP430F67751IPZ FAQ
1.How can I place an order for MSP430F67751IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67751IPZ 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 MSP430F67751IPZ reliable?
The price and inventory of MSP430F67751IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67751IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F67751IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67751IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67751IPZ?
MSP430F67751IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67751IPZ 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 MSP430F67751IPZ?
For technical support, including MSP430F67751IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67751IPZ requirements.
6.How does Aetrix verify that MSP430F67751IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F67751IPZ 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 MSP430F67751IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F67751IPZ?
All MSP430F67751IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67751IPZ, 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 MSP430F67751IPZ part is unused and in its original packaging.
Return procedure for MSP430F67751IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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