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Texas Instruments MSP430F67641AIPNR
- Part No.:
- MSP430F67641AIPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430F67641AIPNR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,227
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Product details
Overview
MSP430F67641AIPNR from Texas Instruments is a polyphase metering SoC designed for revenue-grade three-phase energy measurement. It integrates three 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 128KB flash/8KB RAM, LCD controller (320 segments), and RTC with AUXVCC3-powered calibration-enabling <0.5% accuracy over 2000:1 dynamic range in ANSI C12.20/IEC 63053-compliant watt-hour meters.
For engineers reviewing the MSP430F67641AIPNR datasheet, MSP430F67641AIPNR pinout, MSP430F67641AIPNR application, or MSP430F67641AIPNR equivalent, this page delivers verified package mapping (80-pin LQFP-PN), confirmed low-power modes (LPM3.5: 1.24 µA), real-time clock operation under auxiliary supply, sigma-delta modulator input configurations, and functional alternatives for smart meter design.
Technical Context
The MSP430F67641AIPNR implements a dedicated metering architecture with three independent SD24_B sigma-delta converters for phase current/voltage sampling, each supporting differential inputs and programmable gain. Its system-level timing relies on a 32768-Hz crystal oscillator feeding a calibrated RTC module powered separately via AUXVCC3, ensuring timekeeping integrity during AC mains failure.
Energy computation is performed entirely in firmware using TI's certified energy measurement library, leveraging the 25-MHz CPU and hardware 32-bit multiplier. Communication is handled through three eUSCI_A (UART/SPI) and one eUSCI_B (SPI/I²C) modules, with all four ports configurable across UART, SPI, and I²C protocols without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash / RAM | 128 KB flash (single-cycle execution) + 8 KB RAM (single-cycle access) supports full energy library, tariff management, and AMI protocol stacks in standalone operation. |
| Sigma-Delta ADCs | Three independent 24-bit SD24_B converters with differential inputs, variable gain, and dedicated modulator pins (SD0P0/SD0N0 etc.) for simultaneous three-phase current/voltage sensing. |
| Accuracy | <0.5% error over 2000:1 dynamic range at 40–70 Hz line frequency, meeting ANSI C12.20 Class 0.5 and IEC 63053 requirements without external calibration per phase. |
| Low-Power Modes | LPM3.5 (RTC active): 1.24 µA typical at 3 V; LPM4.5 (shutdown): 0.78 µA - enables >10-year battery backup for time-critical metering functions. |
| Package / I/O | 80-pin LQFP (PN), 52 GPIOs, including 7 COM lines and 32 segment drivers for direct LCD interface up to 320 segments. |
| Supply Range | 1.8 V to 3.6 V DVCC; separate AVCC (analog), AUXVCC1/2/3 (RTC, LCD bias, sigma-delta reference) enable clean power domain isolation. |
| CPU Performance | 25-MHz MSP430 CPU with integrated 32-bit hardware multiplier accelerates real-time energy calculations (kWh, kVARh, demand) within sub-second intervals. |
Pinout & Package
80-pin LQFP (PN) package, 12 mm × 12 mm body size, with exposed thermal pad (not electrically connected). Pin functions include three SD24_B analog input pairs (SD0P0/SD0N0, SD1P0/SD1N0, SD2P0/SD2N0), seven LCD COM outputs (COM0–COM7), AUXVCC3 for RTC power, and multiplexed eUSCI interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 | Sigma-delta modulator input pair A | Differential analog input for Phase A current sensing; requires external shunt or CT interface with level-shifted voltage divider. |
| AUXVCC3 | Dedicated RTC power supply | Enables continuous RTC operation with temperature/offset calibration during main supply failure; must be decoupled with 1 µF ceramic capacitor. |
| COM0–COM7 | LCD common outputs | Drive up to 8 backplane lines for static or multiplexed LCD displays; support contrast control and charge-pump-free operation. |
| P1.4 / P1.5 | eUSCI_A1 RX/TX (default) | Configurable UART interface for HAN communication (e.g., PLC or RF module); supports automatic baud-rate detection and LIN-compatible framing. |
| RST/NMI/SBWTDIO | Reset / NMI / Spy-Bi-Wire debug | Single-pin 4-wire JTAG alternative; enables in-system programming and real-time debugging without dedicated TMS/TCK pins. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase lag in software using synchronized voltage/current sampling - eliminates need for external phase-adjust resistors. |
| Four-quadrant power measurement | Calculates active/reactive/apparent power and energy in all quadrants per phase (import/export, inductive/capacitive load) for bidirectional grid applications. |
| Crystal offset & temp calibration | RTC module performs autonomous 32768-Hz crystal calibration using internal temperature sensor and stored trim values - no host MCU intervention required. |
| Flexible power supply switching | Automatically transitions between AC-derived supply, supercapacitor, and coin-cell backup based on voltage thresholds - ensures uninterrupted metering and timekeeping. |
| Password-protected RTC registers | Prevents unauthorized tampering of time/date/tariff schedule via hardware-enforced write protection - meets ANSI C12.22 security requirements. |
Applications
| Smart Grid Revenue Meter | Industrial Energy Monitor |
|---|---|
Use Scenario: Installed as the primary metrology engine in ANSI C12.20-certified three-phase 4-wire star-connected utility meters. IC Role / Device Role / Timing Role: Performs simultaneous sampling, harmonic analysis, tariff-based kWh/kVARh accumulation, and secure time-stamped data logging. Use Value: Achieves Class 0.5 accuracy across 2000:1 current range while maintaining <1.24 µA RTC-only current draw - extends battery life beyond 10 years. | Use Scenario: Embedded in factory-floor energy dashboards monitoring motor-driven production lines with variable loads. IC Role / Device Role / Timing Role: Measures real-time active/reactive power per phase, detects imbalance, and logs demand peaks with 15-minute intervals. Use Value: Four-quadrant calculation and exact phase-angle measurement enable precise identification of capacitive/inductive load shifts affecting power factor penalties. |
| AMI Endpoint Node | Backup Power Management System |
Use Scenario: Core processor in cellular or RF-based Advanced Metering Infrastructure endpoints transmitting consumption data hourly. IC Role / Device Role / Timing Role: Hosts DLMS/COSEM stack, manages secure OTA updates, and schedules radio wake-up using RTC alarm interrupts. Use Value: Integrated eUSCI peripherals eliminate external transceivers for UART-to-RF bridge; low-power sleep modes reduce average current to <5 µA between transmissions. | Use Scenario: Standalone backup controller in critical infrastructure meters where mains failure must trigger immediate data save and clock holdover. IC Role / Device Role / Timing Role: Monitors VDSYS/DVCC rails, initiates LPM3.5 entry, retains RAM contents, and maintains RTC via AUXVCC3 during brownout. Use Value: 3 µA LPM3 current and dedicated AUXVCC3 supply allow retention of critical billing data and time for >72 hours on 100 mAh backup cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67621AIPNR | 64 KB flash / 4 KB RAM; identical peripheral set and metrology accuracy; same 80-pin LQFP package. | Targeted at cost-sensitive single-tariff meters without advanced AMI or multi-rate billing requirements. | Select when firmware footprint is ≤48 KB and no future feature expansion is planned. |
| AD7403-8BSTZ | Isolated 16-bit sigma-delta modulator only - no CPU, flash, RTC, or communication interfaces. | Requires external MCU for energy calculation and communication; used in modular meter designs separating metrology and processing. | Choose for high-isolation (>5 kV) industrial meter front-ends where TI SoC integration is unnecessary. |
Compared with MSP430F67621AIPNR, the MSP430F67641AIPNR provides double flash/RAM for complex tariff engines and DLMS stacks; versus AD7403-8BSTZ, it delivers full turnkey metrology with calibrated RTC and LCD driver - eliminating BOM components and layout complexity.
Availability
MSP430F67641AIPNR is available at Aetrix Electronics and suitable for three-phase electronic watt-hour meters, utility AMI deployments, and industrial energy monitoring systems requiring stable component supply, long-term lifecycle support, and certified metrology performance.
Supply support for MSP430F67641AIPNR 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 leader specializing in analog, embedded processing, and digital signal technologies for industrial, automotive, and communications markets.
The MSP430F676x1A product line targets revenue-grade polyphase electricity meters, integrating metrology-grade ADCs, ultra-low-power processing, and certified energy algorithms to reduce system cost and accelerate compliance certification.
FAQ
What metrology standards does the MSP430F67641AIPNR meet?
The MSP430F67641AIPNR meets or exceeds ANSI C12.20 Class 0.5 and IEC 63053 requirements for active energy measurement accuracy (<0.5% error over 2000:1 dynamic range at 40–70 Hz). Its sigma-delta architecture, digital phase correction, and factory-calibrated RTC ensure compliance without external trimming components.
How does the MSP430F67641AIPNR handle power supply failure during metering?
During AC mains failure, the MSP430F67641AIPNR automatically switches to backup power, enters LPM3.5 mode drawing just 1.24 µA, and continues RTC operation via AUXVCC3. Critical energy and time data are retained in protected RAM, enabling seamless resumption upon power restoration without data loss.
Can the MSP430F67641AIPNR drive a large LCD display directly?
Yes - the MSP430F67641AIPNR integrates an LCD controller supporting up to 320 segments using 7 COM lines and 44 SEG lines (via port mapping). Contrast is adjustable in software, and the LCDCAP pin enables charge-pump-free operation, eliminating external capacitors for most 4-mux displays.
What communication interfaces are available on the MSP430F67641AIPNR?
The MSP430F67641AIPNR provides four eUSCI modules: three eUSCI_A (configurable as UART or SPI) and one eUSCI_B (configurable as SPI or I²C). These support simultaneous HAN (e.g., RF/PLC), firmware updates (UART), and sensor interfacing (I²C) without external level shifters or protocol translators.
Is the MSP430F67641AIPNR pin-compatible with other devices in the F676x1A family?
Yes - the MSP430F67641AIPNR in the 80-pin PN package shares identical pinout, power domains, and peripheral mapping with MSP430F67621AIPNR. Firmware and PCB layouts are interchangeable; only flash/RAM capacity differs, allowing scalable design reuse across meter tiers.
MSP430F67641AIPNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 3x24b Sigma Delta Converter
- Number of I/O:
- 52
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
MSP430F67641AIPNR FAQ
1.How can I place an order for MSP430F67641AIPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67641AIPNR 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 MSP430F67641AIPNR reliable?
The price and inventory of MSP430F67641AIPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67641AIPNR is usually 5 days.
3.What payment methods are accepted for MSP430F67641AIPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67641AIPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67641AIPNR?
MSP430F67641AIPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67641AIPNR 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 MSP430F67641AIPNR?
For technical support, including MSP430F67641AIPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67641AIPNR requirements.
6.How does Aetrix verify that MSP430F67641AIPNR is sourced from the original manufacturer or authorized distributors?
All MSP430F67641AIPNR 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 MSP430F67641AIPNR meets industry standards.
7.What is the process for return or replacement of MSP430F67641AIPNR?
All MSP430F67641AIPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67641AIPNR, 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 MSP430F67641AIPNR part is unused and in its original packaging.
Return procedure for MSP430F67641AIPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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