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Texas Instruments MSP430F67471AIPZ
- Part No.:
- MSP430F67471AIPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67471AIPZ.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430F67471AIPZ from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, integrating a 25-MHz CPU with 32-bit multiplier, 256KB flash, 32KB RAM, four 24-bit sigma-delta ADCs, and a 10-bit SAR ADC - delivering <0.1% energy measurement accuracy over 2000:1 dynamic range while meeting ANSI C12.20 and IEC 62053 standards.
For engineers reviewing the MSP430F67471AIPZ datasheet, MSP430F67471AIPZ pinout, MSP430F67471AIPZ application, or MSP430F67471AIPZ equivalent, this device supports three-phase + neutral power measurement, digital phase correction for CTs, RTC with tamper detection, LCD driver (320 segments), and six eUSCI interfaces (UART/I²C/SPI) - critical for smart utility meter design, calibration, and secure firmware deployment.
Technical Context
The MSP430F67471AIPZ implements a dedicated metrology subsystem with four independent SD24_B sigma-delta modulators supporting differential inputs and programmable gain, enabling simultaneous voltage/current sampling across up to three phases plus neutral. Its 10-bit ADC provides auxiliary measurements including supply voltage and on-chip temperature sensing.
It features an ultra-low-power architecture with LPM3 standby current of 2.1 µA at 3 V, RTC mode (LPM3.5) at 0.34 µA, and shutdown mode (LPM4.5) at 0.18 µA - optimized for battery-backed operation during AC mains failure. The device uses a 100-pin LQFP (PZ) package with 62 GPIOs and dual-domain power management (AVCC/DVCC/VCORE).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 256 KB single-cycle access - sufficient for full metrology library, communication stacks, and secure boot code. |
| RAM | 32 KB single-cycle access - supports real-time accumulation of multiple energy registers and waveform buffers. |
| Sigma-Delta ADCs | 4 × 24-bit SD24_B converters - enables concurrent high-accuracy current/voltage sampling per phase with >95 dB SNR. |
| SAR ADC | 10-bit, 200-ksps with 6 external + 2 internal channels - used for supply monitoring, temperature sensing, and auxiliary diagnostics. |
| Low-Power Modes | LPM3: 2.1 µA; LPM3.5 (RTC): 0.34 µA; LPM4.5 (shutdown): 0.18 µA - ensures >10-year battery life in backup operation. |
| Communication Interfaces | 4 × eUSCI_A (UART/IrDA/SPI) + 2 × eUSCI_B (SPI/I²C) - supports HAN, PLC, optical port, and secure bootloader updates. |
| LCD Driver | Up to 320 segments with contrast control - drives multi-line alphanumeric displays without external bias circuitry. |
Pinout & Package
Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, 0.5 mm pitch, 62 usable I/O pins. Dual analog/digital supply domains (AVCC/AVSS, DVCC/DVSS, VCORE) require separate decoupling and board-level routing isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | Low-frequency crystal oscillator input/output | Drives 32.768-kHz RTC crystal; supports automatic crystal offset calibration and temperature compensation. |
| VREF | Reference voltage input | Accepts external precision reference (e.g., 2.5 V) for SD24_B modulators; enables stable metrology under varying supply conditions. |
| SD0P0 / SD0N0 – SD3P0 / SD3N0 | Differential sigma-delta ADC inputs | Four fully differential pairs for direct connection to current shunts or CT secondary windings (±2.5 V range). |
| COM0–COM7 | LCD common outputs | Eight COM lines supporting static or multiplexed LCD drive up to 320 segments; integrated charge pump eliminates external capacitors. |
| eUSCI_A0–A3 / eUSCI_B0–B1 | Universal serial communication interfaces | Configurable UART (optical port), SPI (PLC modem), or I²C (secure element, EEPROM) - all support DMA-triggered transfers. |
Key Features
| Feature | Design Value |
|---|---|
| 4-Quadrant energy measurement | Enables bidirectional active/reactive energy calculation per phase - required for net metering and distributed generation compliance. |
| Password-protected RTC with tamper detection | Prevents clock manipulation via physical intrusion; logs tamper events to secure memory and triggers zeroization of sensitive data. |
| Digital phase correction | Compensates CT phase lag in software using measured angle error - eliminates need for hardware phase-shift networks. |
| Temperature-compensated energy measurement | Uses on-chip temperature sensor and calibration coefficients to maintain <0.1% accuracy across –40°C to +85°C ambient. |
| Pulse output pins for calibration | Dedicated active/reactive energy pulse outputs (e.g., PULSE_A, PULSE_R) meet ANSI C12.20 pulse rate requirements for field calibration. |
Applications
| Smart Electricity Meter | Revenue-Grade Submetering |
|---|---|
|
Use Scenario: Installed in residential/commercial 3-phase 4-wire service entrance to measure total kWh consumption and demand. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time RMS, fundamental, harmonic, and energy calculations; RTC provides time-stamped billing intervals. Use Value: Meets ANSI C12.20 Class 0.2 accuracy with single calibration across 40–70 Hz line frequency - reduces factory test time and calibration cost. |
Use Scenario: Embedded in panel-level submeters tracking HVAC, lighting, and tenant-specific loads in multi-tenant buildings. IC Role / Device Role / Timing Role: High-resolution energy accumulator with 2000:1 dynamic range; eUSCI interfaces enable Modbus RTU over RS-485 for BMS integration. Use Value: Four SD24_B ADCs allow simultaneous sampling of three phase voltages and neutral current - enables true vector-based load profiling. |
| Anti-Tamper Utility Meter | Energy Monitoring Gateway |
|
Use Scenario: Deployed in regions with high meter-tampering risk, requiring cryptographic integrity and physical intrusion response. IC Role / Device Role / Timing Role: Secure execution environment with password-protected RTC, tamper-detect pins, and integrated security modules for firmware validation. Use Value: Tamper detection triggers immediate RTC freeze and secure memory wipe - satisfies IEC 62053-31 tamper-resistance requirements. |
Use Scenario: Edge node aggregating data from multiple sensors (CTs, voltage taps, temperature) for cloud-based analytics and demand response. IC Role / Device Role / Timing Role: Low-power host processor running lightweight protocol stack (DLMS/COSEM over UART/SPI); LCD displays local KPIs. Use Value: LPM3.5 current of 0.34 µA extends supercapacitor hold-up time to >72 hours during mains outage - ensures uninterrupted data logging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67461AIPZ | 128 KB flash, 16 KB RAM, same 4-SD24_B ADC count and package | Reduced firmware capacity limits advanced communication stacks or extended calibration tables | Select when BOM cost sensitivity outweighs need for future firmware expansion or dual-protocol support. |
| MSP430F67671AIPZ | 256 KB flash, 32 KB RAM, 6 × 24-bit SD24_B ADCs, same package | Two additional sigma-delta channels support 4-wire delta configurations or redundant sensing | Choose when measuring fourth conductor (e.g., DC link in hybrid systems) or requiring higher channel redundancy. |
Compared with MSP430F67461AIPZ, the MSP430F67471AIPZ offers double the RAM for waveform capture and larger flash for DLMS/COSEM stack; versus MSP430F67671AIPZ, it trades two SD24_B channels for lower system cost while retaining full 3-phase+neutral metrology capability.
Availability
MSP430F67471AIPZ is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade submeters, anti-tamper utility meters, and energy monitoring gateways requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430F67471AIPZ 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 MSP430F67471AIPZ belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for ANSI/IEC-compliant energy measurement in utility-grade smart meters and industrial power monitors.
FAQ
What is the maximum number of independent 24-bit sigma-delta ADC channels supported by the MSP430F67471AIPZ?
The MSP430F67471AIPZ integrates four independent 24-bit sigma-delta ADC channels (SD24_B) - sufficient for simultaneous sampling of three phase voltages and neutral current, or three phase currents and one reference voltage. This configuration directly supports 3-phase 4-wire star topologies without external multiplexing, preserving signal integrity and timing coherence across all channels in the MSP430F67471AIPZ.
Does the MSP430F67471AIPZ support ANSI C12.20 and IEC 62053 certification out of the box?
Yes, the MSP430F67471AIPZ is designed to meet or exceed ANSI C12.20 Class 0.2 and IEC 62053-21/22/23 accuracy requirements. Its <0.1% error over 2000:1 dynamic range, 4-quadrant measurement, digital phase correction, and temperature-compensated energy calculation are validated features - but final certification requires system-level testing with calibrated sensors and reference meters per the MSP430F67471AIPZ hardware design guidelines.
What low-power modes are available on the MSP430F67471AIPZ, and what is the RTC current draw in LPM3.5?
The MSP430F67471AIPZ supports six low-power modes, including LPM3 (standby, 2.1 µA), LPM3.5 (RTC active, 0.34 µA at 3 V), and LPM4.5 (shutdown, 0.18 µA). In LPM3.5, the real-time clock remains fully operational with calendar functions, alarm interrupts, and tamper detection enabled - allowing the MSP430F67471AIPZ to maintain accurate timekeeping for billing intervals during AC mains failure while minimizing battery drain.
How many eUSCI modules does the MSP430F67471AIPZ include, and what protocols do they support?
The MSP430F67471AIPZ includes six enhanced universal serial communication interfaces: four eUSCI_A modules (supporting UART, IrDA, and SPI) and two eUSCI_B modules (supporting SPI and I²C). These enable concurrent use of optical port (UART), PLC modem (SPI), secure element (I²C), and debug interface (UART) - all with DMA support to offload CPU during high-throughput metrology data transfer in the MSP430F67471AIPZ.
What is the function of the VREF pin on the MSP430F67471AIPZ, and is an external reference required?
The VREF pin on the MSP430F67471AIPZ serves as the precision reference input for all four 24-bit sigma-delta ADCs. While the device includes an internal reference, using an external 2.5-V or 3.0-V reference (e.g., REF5025) is recommended for metrology-grade accuracy - as it improves stability, reduces drift, and maintains <0.1% error across temperature and time. The MSP430F67471AIPZ datasheet specifies VREF must be externally decoupled with ≥1 µF ceramic capacitance for optimal performance.
MSP430F67471AIPZ 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, 4x24b Sigma Delta Converter
- Number of I/O:
- 62
- Program Memory Size:
- 256KB (256K 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:
MSP430F67471AIPZ FAQ
1.How can I place an order for MSP430F67471AIPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67471AIPZ 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 MSP430F67471AIPZ reliable?
The price and inventory of MSP430F67471AIPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67471AIPZ is usually 5 days.
3.What payment methods are accepted for MSP430F67471AIPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67471AIPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67471AIPZ?
MSP430F67471AIPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67471AIPZ 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 MSP430F67471AIPZ?
For technical support, including MSP430F67471AIPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67471AIPZ requirements.
6.How does Aetrix verify that MSP430F67471AIPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F67471AIPZ 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 MSP430F67471AIPZ meets industry standards.
7.What is the process for return or replacement of MSP430F67471AIPZ?
All MSP430F67471AIPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67471AIPZ, 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 MSP430F67471AIPZ part is unused and in its original packaging.
Return procedure for MSP430F67471AIPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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