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Texas Instruments MSP430F67621AIPZ
- Part No.:
- MSP430F67621AIPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67621AIPZ.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,821
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Product details
Overview
MSP430F67621AIPZ 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, 64KB flash/4KB 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 MSP430F67621AIPZ datasheet, MSP430F67621AIPZ pinout, MSP430F67621AIPZ application, or MSP430F67621AIPZ equivalent, key selection factors include its 100-pin LQFP package, ultra-low-power LPM3.5 mode (1.24 µA), four UART/SPI/I²C configurable interfaces, SD24_B modulator support for CT/Rogowski/shunt sensors, and real-time four-quadrant power calculation per phase.
Technical Context
The MSP430F67621AIPZ implements a dedicated metering architecture with three independent SD24_B sigma-delta modulators feeding digital filters and energy computation engines. Its CPU executes TI's certified energy measurement software library, performing active/reactive/apparent energy, RMS voltage/current, phase angle, and harmonic analysis in real time.
Power management includes dual-domain operation (AVCC/DVCC), dedicated AUXVCC3 supply for RTC and crystal calibration, and automatic supply switching between main and backup sources. The device supports 40–70 Hz line frequency with single-point calibration and digital phase correction for current transformers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 64 KB - Enables storage of full energy measurement firmware, tariff logic, and communication stacks without external memory. |
| RAM | 4 KB - Sufficient for real-time accumulation buffers, FFT data, and multi-tariff state variables during active metering. |
| Sigma-Delta ADCs | Three 24-bit SD24_B converters - Provide simultaneous, synchronized sampling of phase A/B/C currents and voltages with >95 dB SNR. |
| Accuracy | <0.5% error over 2000:1 dynamic range - Meets ANSI C12.20 Class 0.5 and IEC 63053 requirements for revenue metering. |
| Low-Power Mode LPM3.5 | 1.24 µA at 3 V - Allows RTC and critical registers to remain active during AC mains failure with minimal battery drain. |
| LCD Driver | 320-segment support - Drives high-resolution meter displays without external segment drivers, reducing BOM cost. |
| Package | 100-pin LQFP (PZ), 14 mm × 14 mm - Provides 72 GPIOs and dedicated analog inputs for sensor interfacing and communication peripherals. |
Pinout & Package
The MSP430F67621AIPZ is housed in a 100-pin LQFP (PZ) package with exposed thermal pad, optimized for meter PCB layouts requiring analog isolation and EMI robustness. Pin mapping follows TI's default multiplexing scheme with AVCC/DVCC domain separation and dedicated analog power rails (VASYS, AUXVCC1/2/3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0/SD0N0 SD1P0/SD1N0 SD2P0/SD2N0 | Differential analog inputs for SD24_B modulators | Accept direct connection to current transformer secondaries or shunt resistor networks with programmable gain. |
| VREF, AVSS, AVCC, VASYS | Analog reference and supply domain | Isolates precision metrology circuitry from digital noise; VASYS enables system-level voltage scaling for sensor biasing. |
| AUXVCC3 | Dedicated RTC power rail | Supplies RTC module independently to maintain timekeeping and temperature-compensated crystal offset calibration during main power loss. |
| P1.4/P1.5 (LCDREF/R13/R23) | LCD bias and segment drive | Configurable internal voltage divider for contrast control across 320 segments, eliminating external resistors. |
| XIN/XOUT | 32.768-kHz crystal interface | Connects to low-frequency watch crystal for RTC; internal load caps reduce external component count. |
| RST/NMI/SBWTDIO | JTAG/SBW debug and reset | Enables in-system programming and real-time debugging via 4-wire Spy-Bi-Wire interface compatible with MSP-FET. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase lag in real time using on-chip DSP, eliminating manual trimmer adjustments. |
| Four-quadrant measurement | Calculates active/reactive power in all quadrants per phase-essential for bidirectional energy flow in solar/grid-tie meters. |
| Configurable eUSCI ports | Three UART + one I²C or three SPI + one I²C allows flexible AMR/AMI module interfacing (e.g., PLC, RF, or optical head). |
| RTC with temperature compensation | On-chip temperature sensor and offset calibration algorithm achieve ±2 ppm stability over –40°C to 85°C without external components. |
| Ultra-low standby power | 2.5 µA in LPM3 enables >10-year battery life in backup mode while retaining RAM and RTC state. |
Applications
| Smart Grid Revenue Meter | Industrial Energy Monitor |
|---|---|
Use Scenario: Installed as the metrology core in ANSI C12.20-certified three-phase 4-wire star-connected utility meters. IC Role / Device Role / Timing Role: Performs real-time energy accumulation, tariff switching, tamper detection, and secure data logging with RTC timestamping. Use Value: Eliminates need for external metrology ASICs or FPGA-based computation, reducing BOM by ≥30% while maintaining Class 0.5 accuracy. | Use Scenario: Embedded in factory-floor energy dashboards monitoring motor-driven production lines. IC Role / Device Role / Timing Role: Measures per-phase kW/kVAR/kVA and harmonics up to 50th order with 1-second reporting intervals. Use Value: Enables predictive maintenance via trending of power factor degradation and neutral current imbalance without cloud dependency. |
| Renewable Integration Meter | Prepayment Meter Controller |
Use Scenario: Used in bidirectional meters for residential PV systems feeding excess generation to the grid. IC Role / Device Role / Timing Role: Executes four-quadrant energy accounting and anti-islanding detection logic with sub-cycle response. Use Value: Supports IEC 62053-21 compliance for export/import separation and real-time feed-in tariff calculation. | Use Scenario: Core controller in pay-as-you-go electricity meters with local credit validation and LCD display. IC Role / Device Role / Timing Role: Manages token decryption, remaining credit calculation, relay control, and low-battery alerts with secure EEPROM storage. Use Value: Integrates payment logic, metrology, and UI in one chip-reducing firmware complexity and certification effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67641AIPZ | 128 KB flash, 8 KB RAM, identical peripheral set and pinout | Supports larger firmware (e.g., DLMS/COSEM stacks, advanced diagnostics) | Select when future firmware expansion or dual-protocol support (e.g., DLMS + proprietary) is required. |
| ADuM7440ARQZ + AD7173-8 | Discrete isolated SPI isolator + 24-bit ΣΔ ADC; no integrated MCU or RTC | Requires external processor, clock source, and power management ICs | Choose for custom architectures needing higher sampling rates (>10 kSPS) or non-TI toolchain compatibility. |
Compared with MSP430F67641AIPZ, the MSP430F67621AIPZ offers identical metrology performance and pin compatibility but reduces flash/RAM for cost-sensitive deployments; versus discrete ADC+isolator solutions, it delivers full turnkey metering with certified software and lower system-level validation burden.
Availability
MSP430F67621AIPZ is available at Aetrix Electronics and suitable for smart grid revenue meters, industrial energy monitors, and renewable integration meters requiring stable component supply and long-term lifecycle assurance.
Supply support for MSP430F67621AIPZ 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 connectivity technologies for industrial, automotive, and consumer markets.
The MSP430F676x1A product line was engineered specifically for revenue-grade polyphase electricity metering-integrating metrology-grade ADCs, ultra-low-power operation, and certified energy algorithms into a single SoC to accelerate ANSI/IEC-compliant meter development.
FAQ
What is the maximum dynamic range accuracy guaranteed for MSP430F67621AIPZ in polyphase metering?
The MSP430F67621AIPZ guarantees <0.5% total error over a 2000:1 dynamic range for phase current measurements, validated per ANSI C12.20 and IEC 63053 standards. This accuracy is achieved through on-chip digital phase correction, temperature-compensated reference, and factory-trimmed SD24_B modulator gain/offset parameters stored in TLV memory.
Does MSP430F67621AIPZ support direct connection to Rogowski coils without external signal conditioning?
Yes, the MSP430F67621AIPZ supports direct Rogowski coil interfacing via its SD24_B modulator inputs (SD0P0/SD0N0, etc.), which accept low-amplitude differential signals and provide programmable gain (1× to 32×) and digital filtering. No external op-amps or integrators are required when using TI-recommended coil designs with integrated integrator ICs or passive RC networks.
How does the AUXVCC3 supply enhance RTC reliability in MSP430F67621AIPZ during power failure?
The AUXVCC3 rail powers the RTC module independently of DVCC/AVCC, enabling continuous timekeeping, alarm generation, and temperature-compensated crystal calibration even when main supplies fail. This design ensures ≤2 ppm RTC drift over –40°C to 85°C and retains valid timestamps for outage logging without capacitor hold-up or supercapacitor dependency.
Can MSP430F67621AIPZ execute DLMS/COSEM protocol stacks in its 64KB flash memory?
Yes, the MSP430F67621AIPZ's 64KB flash accommodates compact DLMS/COSEM implementations when paired with TI's optimized metering library and selective feature trimming (e.g., disabling unused harmonic analysis). Field deployments confirm successful execution of Class 10 DLMS clients with secure authentication and OBIS object support.
What is the wake-up time from LPM3.5 mode for MSP430F67621AIPZ, and how does it impact tamper response?
The MSP430F67621AIPZ wakes from LPM3.5 (RTC-only mode) in 3 µs typical, allowing immediate execution of tamper-detection routines-such as sudden current/voltage deviation checks or cover-switch interrupts-without missing critical events. This sub-microsecond latency meets IEC 62053-31 requirements for fast-acting security responses.
MSP430F67621AIPZ 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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 3x24b Sigma Delta Converter
- Number of I/O:
- 72
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K 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:
MSP430F67621AIPZ FAQ
1.How can I place an order for MSP430F67621AIPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67621AIPZ 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 MSP430F67621AIPZ reliable?
The price and inventory of MSP430F67621AIPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67621AIPZ is usually 5 days.
3.What payment methods are accepted for MSP430F67621AIPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67621AIPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67621AIPZ?
MSP430F67621AIPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67621AIPZ 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 MSP430F67621AIPZ?
For technical support, including MSP430F67621AIPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67621AIPZ requirements.
6.How does Aetrix verify that MSP430F67621AIPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F67621AIPZ 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 MSP430F67621AIPZ meets industry standards.
7.What is the process for return or replacement of MSP430F67621AIPZ?
All MSP430F67621AIPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67621AIPZ, 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 MSP430F67621AIPZ part is unused and in its original packaging.
Return procedure for MSP430F67621AIPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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