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Texas Instruments MSP430F67761IPZR
- Part No.:
- MSP430F67761IPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67761IPZR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,550
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Product details
Overview
MSP430F67761IPZR from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electronic watt-hour meters. It integrates seven 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 256KB flash/16KB RAM, LCD controller (320 segments), and dedicated pulse outputs for active/reactive energy calibration - enabling <0.1% accuracy over 2000:1 dynamic range in utility metering applications.
For engineers reviewing the MSP430F67761IPZR datasheet, MSP430F67761IPZR pinout, MSP430F67761IPZR application, or MSP430F67761IPZR equivalent, this device is selected for high-accuracy polyphase energy measurement systems requiring ANSI C12.20 and IEC 62053 compliance, ultra-low-power RTC operation (0.34 µA in LPM3.5), and integrated anti-tamper security modules.
Technical Context
The MSP430F67761IPZR implements a dedicated metrology subsystem with seven independent SD24_B sigma-delta modulators supporting differential inputs and programmable gain, each feeding into a shared digital filter engine for per-phase power calculations. Its real-time clock includes crystal offset calibration and temperature compensation, while the backup subsystem (AUXVCC3) sustains LCD and RTC during AC mains failure at 3 µA in LPM3.
Communication is handled via six configurable eUSCI ports - supporting up to four UARTs, six SPIs, or two I²C interfaces - and the device executes TI's energy measurement software library directly from flash to compute kWh, kVARh, RMS voltage/current, and phase angle without external co-processing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash / RAM | 256 KB flash (single-cycle) + 16 KB RAM (single-cycle) - supports full energy library, tariff management, and AMR/AMI protocol stacks in one chip. |
| Sigma-Delta ADCs | Seven 24-bit SD24_B converters - enables simultaneous measurement of three phases + neutral + auxiliary channels with >100 dB SNR. |
| Accuracy | <0.1% error over 2000:1 dynamic range - meets ANSI C12.20 Class 0.1 and IEC 62053-22 Class 0.2 requirements. |
| 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. |
| Line Frequency Range | 40–70 Hz with single calibration - eliminates recalibration across global grid standards (50/60 Hz). |
| LCD Driver | Up to 320 segments with contrast control - drives large-format utility display without external segment drivers. |
| Package | 100-pin LQFP (PZ), 14 mm × 14 mm - provides 62 GPIOs and dedicated metrology analog pins (SDxP/N, VREF, AVSS/AVCC). |
Pinout & Package
Package: 100-pin LQFP (PZ), body size 14 mm × 14 mm, industrial temperature range (–40°C to +85°C). Pin functions validated per TI SLAS815D Rev. September 2018, Table 4-2 (PZ package signal descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 | Differential input channel 0 (+/–) | Primary phase A current measurement path using shunt or CT sensor; supports programmable gain and digital phase correction. |
| VREF | Reference voltage input | External 2.5-V reference for all SD24_B converters; enables stable metrology performance independent of supply variation. |
| AUXVCC3 | Backup power supply | Powers RTC and LCD in LPM3 during AC failure; requires low-leakage supercapacitor or coin cell support. |
| COM0–COM7 | LCD common outputs | Drive up to 8 LCD commons for multiplexed 320-segment display; integrated charge pump eliminates external bias circuitry. |
| P1.0 / P1.1 | Analog inputs (VeREF– / VeREF+) | Provide internal reference sense points for system-level calibration and temperature-compensated energy calculation. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase lag in real time - maintains <1° phase angle error across load currents and temperatures. |
| Password-protected RTC | Prevents unauthorized clock tampering; includes crystal offset calibration register and temperature compensation coefficients stored in TLV memory. |
| Four-quadrant measurement | Computes active/reactive power independently per phase and cumulatively - supports bidirectional energy flow in distributed generation meters. |
| Integrated anti-tamper | Dedicated tamper detect pins with Schmitt-trigger inputs and interrupt capability - triggers secure erase or alert on case opening, magnetic attack, or voltage glitch. |
| Flexible power supply switching | Automatically transitions between main AC-derived supply and AUXVCC3 backup - ensures uninterrupted timekeeping and data retention during outages. |
Applications
| Smart Grid Revenue Meter | Industrial Energy Monitor |
|---|---|
Use Scenario: Installed as the core metrology SoC in ANSI C12-compliant 3-phase 4-wire star-connected utility meters. IC Role / Device Role / Timing Role: Performs real-time energy accumulation, tariff switching, pulse output generation, and secure data logging with RTC timestamping. Use Value: Eliminates need for external metrology ASIC and separate RTC/crystal; achieves Class 0.1 accuracy with single-point calibration across 40–70 Hz. | Use Scenario: Embedded in factory-floor energy monitoring panels tracking motor-driven loads across multiple feeders. IC Role / Device Role / Timing Role: Measures RMS voltage/current, harmonic distortion (via FFT-ready samples), and power factor per phase using integrated SD24_B and 10-bit ADC. Use Value: Delivers sub-0.2% THD measurement accuracy and synchronized sampling across 7 ADC channels - no external synchronization required. |
| AMI Endpoint Node | Renewables Integration Meter |
Use Scenario: Serves as the metering engine in cellular/NB-IoT-enabled smart meters transmitting consumption data hourly. IC Role / Device Role / Timing Role: Executes TI energy library, manages secure OTA updates via UART/SPI, and buffers data in RAM during RF transmission gaps. Use Value: 256KB flash stores full DLMS/COSEM stack and firmware; low-power modes extend battery life for battery-backed endpoints. | Use Scenario: Deployed in solar + storage hybrid meters measuring bidirectional energy flow at point-of-interconnection. IC Role / Device Role / Timing Role: Computes net import/export kWh/kVARh, detects islanding via frequency/voltage deviation, and logs event records with microsecond timestamps. Use Value: Four-quadrant math engine and 100-ms wake-up from LPM3 enable rapid grid anomaly response - compliant with IEEE 1547-2018. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67761IPEU | 128-pin LQFP (PEU) package with 90 GPIOs; identical flash/RAM/ADC specs; larger footprint and higher pin count. | Preferred where additional I/O is needed for multi-sensor expansion or parallel communication interfaces. | Select when board layout accommodates 20 mm × 14 mm package and requires >62 GPIOs for extended peripheral connectivity. |
| MSP430F67661IPZ | Same 100-pin LQFP package but with six SD24_B ADCs (vs. seven); 256KB flash/16KB RAM; lacks dedicated neutral-channel ADC. | Suitable for 2-phase or simplified 3-phase meters without neutral current monitoring requirement. | Choose when neutral current measurement is not required and cost reduction via reduced ADC count is prioritized. |
Compared with MSP430F67761IPEU, the MSP430F67761IPZR offers identical metrology performance in a smaller 14 mm × 14 mm footprint but trades 28 GPIOs for space savings; versus MSP430F67661IPZ, it adds a seventh SD24_B channel enabling full 3-phase + neutral measurement without external multiplexing.
Availability
MSP430F67761IPZR is available at Aetrix Electronics and suitable for smart grid revenue meters, industrial energy monitors, and AMI endpoint nodes requiring stable component supply, long-term lifecycle support, and TI-qualified metrology performance.
Supply support for MSP430F67761IPZR 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 ADCs, secure RTC, LCD driver, and communications peripherals into a single ultra-low-power SoC to reduce BOM cost and accelerate certification.
FAQ
What is the maximum dynamic range accuracy guaranteed for MSP430F67761IPZR in polyphase metering?
The MSP430F67761IPZR guarantees <0.1% energy measurement accuracy over a 2000:1 dynamic range, verified per ANSI C12.20 and IEC 62053-22 standards. This specification applies to phase current measurements using its seven 24-bit sigma-delta ADCs with digital filtering and temperature compensation enabled in the TI energy measurement software library running on the device.
Does MSP430F67761IPZR support neutral current measurement?
Yes, the MSP430F67761IPZR supports neutral current measurement via its seventh SD24_B sigma-delta ADC channel (SD6P0/SD6N0). This enables true 3-phase 4-wire metering with independent per-phase and neutral current sampling - critical for detecting imbalance, leakage, and tamper conditions in revenue meters.
What low-power modes are available on MSP430F67761IPZR and their typical current draw?
The MSP430F67761IPZR offers LPM3 (standby, 2.1 µA @ 3 V), LPM3.5 (RTC-only, 0.34 µA @ 3 V), and LPM4.5 (shutdown, 0.18 µA @ 3 V). All modes retain RAM content and support fast wake-up (<5 µs from LPM3), enabling extended battery life during AC mains failure while preserving critical metering state and timekeeping.
How many communication interfaces can be simultaneously active on MSP430F67761IPZR?
Six enhanced USCI (eUSCI) modules are available on MSP430F67761IPZR - configurable as up to four UARTs, six SPIs, or two I²C interfaces. While all six are physically present, simultaneous active use depends on pin mapping and resource allocation; typical deployments use two UARTs (for AMR/AMI and debug) plus one SPI (for secure element) concurrently.
Is MSP430F67761IPZR pin-compatible with other devices in the F677x1 family?
Yes, the MSP430F67761IPZR shares identical pinout and electrical characteristics with all other 100-pin LQFP (PZ) variants in the F677x1 family (e.g., MSP430F67791IPZ, MSP430F67751IPZ). Firmware and PCB design are interchangeable across these parts - only flash size, RAM size, and SD24_B count differ, all implemented via mask-programmed configuration bits.
MSP430F67761IPZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 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:
MSP430F67761IPZR FAQ
1.How can I place an order for MSP430F67761IPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67761IPZR 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 MSP430F67761IPZR reliable?
The price and inventory of MSP430F67761IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67761IPZR is usually 5 days.
3.What payment methods are accepted for MSP430F67761IPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67761IPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67761IPZR?
MSP430F67761IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67761IPZR 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 MSP430F67761IPZR?
For technical support, including MSP430F67761IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67761IPZR requirements.
6.How does Aetrix verify that MSP430F67761IPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F67761IPZR 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 MSP430F67761IPZR meets industry standards.
7.What is the process for return or replacement of MSP430F67761IPZR?
All MSP430F67761IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67761IPZR, 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 MSP430F67761IPZR part is unused and in its original packaging.
Return procedure for MSP430F67761IPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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