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Texas Instruments MSP430F67661AIPZR
- Part No.:
- MSP430F67661AIPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67661AIPZR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,175
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Product details
Overview
MSP430F67661AIPZR from Texas Instruments is a polyphase metering SoC designed for high-accuracy 3-phase energy measurement in utility smart meters. It integrates six 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 256KB flash/16KB RAM, LCD controller (320 segments), and dual eUSCI modules supporting UART/I²C/SPI. It meets ANSI C12.20 and IEC 62053 standards with <0.1% error over 2000:1 dynamic range.
For engineers reviewing the MSP430F67661AIPZR datasheet, MSP430F67661AIPZR pinout, MSP430F67661AIPZR application, or MSP430F67661AIPZR equivalent, key selection criteria include metrology ADC channel count, RTC tamper detection, low-power LPM3.5 mode (0.34 µA), and 128-pin LQFP package compatibility with EVM430-F6779 evaluation hardware.
Technical Context
The MSP430F67661AIPZR implements a dedicated metrology subsystem with six independent SD24_B sigma-delta modulators-each with differential inputs, programmable gain, and digital phase correction-enabling simultaneous voltage/current sampling across three phases plus neutral. Its real-time calculation engine executes TI's Energy Measurement Library to derive active/reactive power, energy, and RMS values without host CPU intervention.
Power management includes automatic supply switching between AC mains and backup battery, ultra-low-power RTC operation (LPM3.5), and LCD driver support down to 3 µA. Communication is handled by four eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (SPI/I²C) modules, with pin-multiplexed interfaces enabling flexible interface routing for HES, PLC, or RF modem integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 24-bit sigma-delta (6 channels), enabling <0.1% energy accuracy over 2000:1 dynamic range per phase |
| CPU Speed | 25 MHz with 32-bit hardware multiplier, sufficient for real-time metrology calculations and firmware-based tariff processing |
| Memory | 256 KB flash / 16 KB RAM - supports full Energy Measurement Library, calibration tables, and secure firmware updates |
| Low-Power Mode | LPM3.5 (RTC active): 0.34 µA at 3 V - enables >10-year battery-backed timekeeping during mains failure |
| LCD Support | 320-segment driver with contrast control - drives large-format utility meter displays without external bias circuitry |
| Standby Current | 2.1 µA in LPM3 - minimizes auxiliary supply sizing and extends backup runtime |
| Communication | 4× eUSCI_A (UART/SPI), 2× eUSCI_B (I²C/SPI) - supports dual-interface metering (e.g., optical port + PLC) |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch, 90 GPIOs including 32 LCD segment pins and 8 common lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | Low-frequency crystal oscillator input/output | Drives 32.768 kHz RTC crystal; supports crystal offset calibration and temperature compensation |
| VREF | Reference voltage input for SD24_B ADCs | Accepts external 2.5 V reference for highest metrology accuracy; internal reference also available |
| SDxP0 / SDxN0 (x=0–3) | Differential analog inputs for sigma-delta ADCs | Direct connection points for current transformer or shunt sensor outputs; support ±2.5 V input range |
| COM0–COM7 | LCD common outputs | Drive up to 8 multiplexed LCD commons; enable 320-segment display with static or 1:4 bias |
| P1.0 / P1.1 | VeREF− / VeREF+ inputs | Provide dedicated reference inputs for ADC10_A SAR ADC; support internal/external reference selection |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase lag in real time, preserving 4-quadrant power measurement integrity |
| Password-protected RTC | Includes tamper detection on RTC pins, crystal offset calibration, and temperature compensation for ±1 ppm accuracy |
| Energy pulse outputs | Dedicated hardware pins generate calibrated active/reactive energy pulses (e.g., 1000 imp/kWh) without CPU overhead |
| Anti-tamper security | Integrated modules monitor case opening, magnetic fields, and voltage anomalies; trigger secure data wipe on violation |
| Flexible power supply | Automatic switchover between AC-derived supply and backup battery; supports direct DC input or capacitive dropper topologies |
Applications
| Smart Electricity Meter | Revenue-Grade Submeter |
|---|---|
Use Scenario: Installed as primary billing meter in residential or commercial 3-phase 4-wire service entrance. IC Role / Device Role / Timing Role: Metrology SoC performing real-time energy accumulation, tariff switching, and secure data logging. Use Value: Meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S requirements with single-point calibration across 40–70 Hz line frequency. | Use Scenario: Embedded in panel-mounted submeters for tenant-level energy allocation in multi-tenant buildings. IC Role / Device Role / Timing Role: Standalone metering node with local LCD display, pulse output, and RS-485 communication. Use Value: 256KB flash stores multi-tariff profiles and 30+ days of 15-minute interval data; LPM3.5 ensures accurate timekeeping during outages. |
| AMI Endpoint Node | Industrial Power Monitor |
Use Scenario: Integrated into RF or PLC-based AMI endpoints communicating consumption data to head-end systems. IC Role / Device Role / Timing Role: Metrology engine interfacing with external modem via UART or SPI; RTC provides time-stamped event logs. Use Value: Four eUSCI_A modules allow concurrent optical port (UART), PLC modem (SPI), and debug interface - no external bus arbitration required. | Use Scenario: Mounted inside motor control panels or switchgear to monitor feeder-level power quality and demand. IC Role / Device Role / Timing Role: Real-time power analyzer computing THD, harmonics, voltage sags/swells, and unbalance metrics. Use Value: Six independent 24-bit ADCs capture synchronized voltage/current waveforms across all phases and neutral for IEEE 519-compliant analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67671AIPZR | 256KB flash / 32KB RAM vs. 256KB / 16KB; identical ADC count, package, and peripheral set | Supports larger firmware images (e.g., dual-bank OTA, extended security libraries) without memory constraint | Select when additional RAM is needed for complex tariff logic or extended data buffering |
| MSP430F67661IPZ | 100-pin LQFP (PZ) package, 62 GPIOs, same core specs but reduced LCD and ADC channel routing flexibility | Suitable for cost-sensitive, space-constrained designs where 320-segment LCD or full 6-ADC sensor count is not required | Select when board area or BOM cost reduction outweighs need for maximum metrology I/O scalability |
Compared with MSP430F67661AIPZR, the MSP430F67671AIPZR offers more RAM for advanced firmware features, while the MSP430F67661IPZ trades pin count and LCD capability for smaller footprint and lower unit cost - both retain identical metrology performance and compliance certification paths.
Availability
MSP430F67661AIPZR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade submetering, and industrial power monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.
Supply support for MSP430F67661AIPZR 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 delivering analog and embedded processing solutions, with deep expertise in precision metrology, low-power design, and industrial-grade reliability.
The MSP430F67661AIPZR belongs to the MSP430™ Metrology and Monitoring MCU portfolio, engineered specifically for ANSI/IEC-compliant energy measurement in utility, commercial, and industrial metering applications.
FAQ
What metrology standards does the MSP430F67661AIPZR comply with?
The MSP430F67661AIPZR is designed to meet or exceed ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S accuracy requirements for active energy measurement. Its six 24-bit sigma-delta ADCs, digital phase correction, and temperature-compensated RTC enable certified compliance across 40–70 Hz line frequencies with single-point calibration - verified in TI's Energy Measurement Design Center using the EVM430-F6779 platform.
Does the MSP430F67661AIPZR support anti-tampering features required for utility deployment?
Yes, the MSP430F67661AIPZR integrates hardware-level anti-tamper functions including RTC tamper detection on dedicated pins, magnetic field sensing via auxiliary ADC inputs, voltage anomaly monitoring, and secure password-protected memory access. These features align with ANSI C12.1 and IEC 62056-53 requirements, and TI provides reference firmware for tamper event logging and secure data erasure - all implemented within the MSP430F67661AIPZR's on-chip security modules.
How many independent analog inputs does the MSP430F67661AIPZR support for 3-phase metering?
The MSP430F67661AIPZR supports six independent differential analog inputs via its SD24_B sigma-delta ADC subsystem - sufficient for simultaneous sampling of three phase voltages (VA, VB, VC) and three phase currents (IA, IB, IC) in a 3-phase 4-wire configuration. Each channel includes programmable gain, digital filtering, and phase correction, enabling true 4-quadrant measurement per phase without external signal conditioning.
What is the lowest power consumption mode available on the MSP430F67661AIPZR with RTC active?
The MSP430F67661AIPZR achieves 0.34 µA in LPM3.5 mode (RTC active) at 3 V, with the real-time clock running from the 32.768 kHz crystal and all other peripherals disabled. This mode retains RTC timekeeping and calendar functions while minimizing battery drain - enabling >10 years of operation on a single CR2032 coin cell, critical for maintaining billing accuracy during extended AC mains failures.
Can the MSP430F67661AIPZR drive a 320-segment LCD directly without external components?
Yes, the MSP430F67661AIPZR integrates a fully featured LCD_C controller supporting up to 320 segments with software-configurable bias (static, 1/2, 1/3, or 1/4), internal charge pump, and contrast control. It requires only external capacitors on LCDCAP and COM pins - no external bias generator, op-amps, or resistor networks - simplifying BOM and layout for utility meter displays compliant with IEC 62056-21 optical port specifications.
MSP430F67661AIPZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-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, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 6x24b Sigma Delta Converter
- Number of I/O:
- 62
- Program Memory Size:
- 256KB (256K 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:
MSP430F67661AIPZR FAQ
1.How can I place an order for MSP430F67661AIPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67661AIPZR 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 MSP430F67661AIPZR reliable?
The price and inventory of MSP430F67661AIPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67661AIPZR is usually 5 days.
3.What payment methods are accepted for MSP430F67661AIPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67661AIPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67661AIPZR?
MSP430F67661AIPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67661AIPZR 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 MSP430F67661AIPZR?
For technical support, including MSP430F67661AIPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67661AIPZR requirements.
6.How does Aetrix verify that MSP430F67661AIPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F67661AIPZR 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 MSP430F67661AIPZR meets industry standards.
7.What is the process for return or replacement of MSP430F67661AIPZR?
All MSP430F67661AIPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67661AIPZR, 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 MSP430F67661AIPZR part is unused and in its original packaging.
Return procedure for MSP430F67661AIPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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