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Texas Instruments MSP430F6768AIPZR
- Part No.:
- MSP430F6768AIPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F6768AIPZR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,410
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Product details
Overview
MSP430F6768AIPZR from Texas Instruments is a polyphase metering SoC designed for high-accuracy energy measurement in 3-phase utility meters. It integrates six independent 24-bit sigma-delta ADCs, a 25-MHz CPU with 32-bit multiplier, 512KB flash/16KB RAM, LCD controller (320 segments), and hardware AES-128 encryption - enabling ANSI C12.20 and IEC 62053-compliant metering with <0.1% error over 2000:1 dynamic range.
For engineers reviewing the MSP430F6768AIPZR datasheet, MSP430F6768AIPZR pinout, MSP430F6768AIPZR application, or MSP430F6768AIPZR equivalent, key selection criteria include its 128-pin LQFP package, dedicated pulse output pins for active/reactive energy calibration, ultra-low-power RTC mode (0.34 µA), and support for current transformers, Rogowski coils, and shunt sensors in 3-phase 4-wire star configurations.
Technical Context
The MSP430F6768AIPZR implements a metrology-optimized architecture with seven analog front-end channels (six used in this variant), each supporting differential inputs and programmable gain for simultaneous voltage/current sampling across three phases plus neutral. Its SD24_B modulators feed into dedicated metrology processing units that perform real-time 4-quadrant power calculation, digital phase correction, and temperature-compensated energy integration.
Digital subsystems include three-channel DMA for zero-CPU-load data movement, four 16-bit timers with nine capture/compare registers, six eUSCI modules (four UART/IrDA/SPI + two SPI/I²C), and an integrated RTC with tamper detection, crystal offset calibration, and password protection - all operating under multiple low-power modes including LPM3.5 (0.34 µA) and LPM4.5 (0.18 µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 24-bit sigma-delta (6 independent channels) for metrology-grade current/voltage sampling |
| Accuracy | <0.1% error over 2000:1 dynamic range per phase current, meeting ANSI C12.20 Class 0.1 & IEC 62053-22 Class 0.5S |
| CPU Core | 25-MHz 16-bit RISC CPU with 32-bit hardware multiplier for real-time metrology calculations |
| Memory | 512KB single-cycle flash + 16KB RAM enables full energy library execution and firmware updates without external storage |
| Power Modes | LPM3.5 (RTC active): 0.34 µA at 3 V; LPM4.5 (shutdown): 0.18 µA - supports >1-year battery backup during mains failure |
| Communication | Six eUSCI modules: four UART/IrDA/SPI (eUSCI_A0–A3) + two SPI/I²C (eUSCI_B0–B1) for HAN, PLC, and optical port interfaces |
| LCD Driver | Supports up to 320 segments with contrast control - eliminates need for external display controller in meter front panels |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch, 90 GPIOs. Thermal pad not present; standard reflow profile applies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Analog reference input | Provides stable 1.2-V internal reference for SD24_B ADCs; must be decoupled per layout guidelines |
| SD0P0/SD0N0–SD6P0/SD6N0 | Sigma-delta ADC inputs | Differential analog inputs for up to six current/voltage sensing channels (6 used on MSP430F6768A) |
| COM0–COM7 | LCD segment commons | Drive up to 8 LCD commons for 320-segment display; supports static and multiplexed operation |
| eUSCI_A0–A3, B0–B1 | Serial interface I/O | Configurable UART/IrDA/SPI or SPI/I²C; enables dual communication paths (e.g., optical + RF/HAN) |
| RST/NMI/SBWTDIO | Reset/debug interface | Combined reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - supports in-system programming and calibration |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated pulse outputs | Separate active/reactive energy pulse pins enable direct connection to calibration LEDs or external counters without CPU intervention |
| Digital phase correction | Compensates CT-induced phase shift in real time - maintains accuracy across temperature and load variations |
| Password-protected RTC | Hardware-enforced access control prevents unauthorized clock manipulation or tamper log clearing in revenue-grade meters |
| Hardware AES-128 | Offloads encryption from CPU - secures firmware updates, tariff data, and consumption logs without latency or software vulnerability |
| 4-quadrant measurement | Measures import/export active/reactive energy per phase independently - required for bidirectional grid-tie and net-metering applications |
Applications
| Smart Electricity Meter | Revenue-Grade Submetering |
|---|---|
Use Scenario: Installed as the primary metrology engine in ANSI/IEC-compliant 3-phase 4-wire electricity meters for utility deployment. IC Role / Device Role / Timing Role: Performs real-time voltage/current sampling, harmonic analysis, energy accumulation, and secure data logging. Use Value: Delivers <0.1% accuracy over 2000:1 dynamic range and meets ANSI C12.20 Class 0.1 requirements without external calibration components. | Use Scenario: Embedded in commercial building submeters to monitor tenant-level energy consumption across HVAC, lighting, and plug loads. IC Role / Device Role / Timing Role: Executes 4-quadrant power calculation, time-of-use (TOU) tariff application, and tamper-resistant data storage. Use Value: Enables revenue-grade billing with integrated RTC, password-protected registers, and hardware AES encryption for data integrity. |
| Grid Edge Monitoring Node | Energy Audit System |
Use Scenario: Deployed in distributed grid-edge sensors to monitor voltage sag/swell, frequency deviation, and harmonic distortion. IC Role / Device Role / Timing Role: Captures synchronized waveform samples via six SD24_B ADCs and performs real-time FFT-based harmonic analysis. Use Value: Provides IEC 61000-4-30 Class A compliance for PQ monitoring using on-chip 24-bit converters and 25-MHz processing bandwidth. | Use Scenario: Integrated into portable energy audit tools for industrial facility assessments requiring precision load profiling and loss analysis. IC Role / Device Role / Timing Role: Interfaces with shunt/CT sensors, computes real/apparent/reactive power, and logs time-stamped data to flash memory. Use Value: Achieves ±0.1% basic accuracy with temperature-compensated measurements and single-point 40–70 Hz line frequency calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6769AIPZR | 7 SD24_B ADCs (vs. 6), 32KB RAM (vs. 16KB), same 512KB flash and peripherals | Required for 4-sensor configurations (e.g., 3-phase + neutral + auxiliary) or extended firmware feature sets | Select when additional ADC channel or RAM headroom is needed for advanced diagnostics or multi-tariff logic |
| MSP430F6767AIPZR | 256KB flash (vs. 512KB), 32KB RAM, 6 SD24_B ADCs - otherwise identical peripheral set | Suitable for cost-optimized meters with smaller firmware footprint or reduced feature scope | Select when flash capacity exceeds application needs and BOM cost reduction is prioritized over future firmware scalability |
Compared with MSP430F6769AIPZR, the MSP430F6768AIPZR trades one ADC channel and half the RAM for identical metrology accuracy and low-power performance - making it optimal for standard 3-phase meters with fixed feature sets. Against MSP430F6767AIPZR, it doubles flash capacity for field-upgradable firmware while maintaining identical analog performance and pin compatibility.
Availability
MSP430F6768AIPZR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade submetering, and grid-edge power quality monitoring requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.
Supply support for MSP430F6768AIPZR 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, embedded processing, and connectivity technologies with leadership in low-power microcontrollers and metrology solutions.
The MSP430F6768AIPZR belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for high-accuracy, low-power energy measurement in utility-grade smart meters and industrial power monitoring systems.
FAQ
What is the maximum number of independent current/voltage sensing channels supported by the MSP430F6768AIPZR?
The MSP430F6768AIPZR integrates six independent 24-bit sigma-delta ADC channels (SD24_B), each configurable for differential voltage or current measurement. This supports full 3-phase + neutral metering with dedicated channels per phase and neutral, plus optional auxiliary sensing - confirmed in Table 3-1 and Section 1.1 of the SLAS982A datasheet.
Does the MSP430F6768AIPZR support hardware-accelerated encryption for secure firmware updates?
Yes, the MSP430F6768AIPZR includes a dedicated hardware AES-128 module that offloads encryption/decryption operations from the CPU. This enables secure boot, authenticated firmware updates, and encrypted data logging without compromising real-time metrology performance - as specified in Section 1.1 "Highly Integrated Digital" features.
What low-power modes are available on the MSP430F6768AIPZR, and what is the lowest active-current consumption?
The MSP430F6768AIPZR supports LPM3 (2.1 µA), LPM3.5 (RTC active, 0.34 µA), and LPM4.5 (shutdown, 0.18 µA) at 3 V. The 0.34 µA LPM3.5 mode retains RTC functionality with crystal oscillator and calendar operation - critical for time-stamped energy logging during AC mains failure, per Section 1.1 "Ultra-Low Power Consumption".
Is the MSP430F6768AIPZR pin-compatible with other devices in the MSP430F676xA family?
Yes, the MSP430F6768AIPZR uses the 128-pin LQFP (PEU) package shared across the F676xA family, including MSP430F6769AIPZR and MSP430F6767AIPZR. Pin functions and physical layout are identical per Figure 4-1 and Table 4-1 - enabling PCB reuse across variants with only firmware and BOM adjustments.
What communication interfaces does the MSP430F6768AIPZR provide for smart meter connectivity?
The MSP430F6768AIPZR provides six eUSCI modules: four eUSCI_A (UART/IrDA/SPI) and two eUSCI_B (SPI/I²C). This supports concurrent interfaces such as optical port (IrDA), PLC modem (SPI), and HAN radio (UART), as documented in Section 1.1 "Six Enhanced Universal Serial Communication Interfaces" and Table 3-1.
MSP430F6768AIPZR 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:
- 512KB (512K 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:
MSP430F6768AIPZR FAQ
1.How can I place an order for MSP430F6768AIPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6768AIPZR 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 MSP430F6768AIPZR reliable?
The price and inventory of MSP430F6768AIPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6768AIPZR is usually 5 days.
3.What payment methods are accepted for MSP430F6768AIPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6768AIPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6768AIPZR?
MSP430F6768AIPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6768AIPZR 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 MSP430F6768AIPZR?
For technical support, including MSP430F6768AIPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6768AIPZR requirements.
6.How does Aetrix verify that MSP430F6768AIPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F6768AIPZR 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 MSP430F6768AIPZR meets industry standards.
7.What is the process for return or replacement of MSP430F6768AIPZR?
All MSP430F6768AIPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6768AIPZR, 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 MSP430F6768AIPZR part is unused and in its original packaging.
Return procedure for MSP430F6768AIPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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