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Texas Instruments MSP430F6768IPZR
- Part No.:
- MSP430F6768IPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F6768IPZR.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,609
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Product details
Overview
MSP430F6768IPZR from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring six 24-bit sigma-delta ADCs, 512KB flash, 16KB RAM, and <0.1% energy measurement accuracy over 2000:1 dynamic range. It supports ANSI C12.20 and IEC 62053 standards, operates from 1.8 V to 3.6 V, and delivers ultra-low-power operation (0.18 µA in LPM4.5).
For engineers reviewing the MSP430F6768IPZR datasheet, MSP430F6768IPZR pinout, MSP430F6768IPZR application, or MSP430F6768IPZR equivalent, this page provides verified technical context, package mapping, real-world use scenarios, and validated alternative options for utility metering design.
Technical Context
The MSP430F6768IPZR integrates a 25-MHz MSP430 CPU with 32-bit hardware multiplier for real-time energy calculations, coupled with dedicated sigma-delta modulators for phase current and voltage sensing across up to three phases plus neutral. Its SD24_B subsystem enables simultaneous high-precision AC measurements with digital phase correction and temperature compensation.
It features dual power domains (AVCC/DVCC), auxiliary supply switching (AUXVCC1–AUXVCC3), and a tamper-protected RTC with crystal offset calibration. Communication is handled via six configurable eUSCI modules supporting UART, SPI, and I²C - all independently assignable to physical pins without fixed peripheral binding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 512 KB single-cycle flash enabling full energy library + firmware + tariff tables in one device |
| RAM | 16 KB single-cycle RAM for real-time metering buffers, calibration coefficients, and communication stacks |
| Sigma-Delta ADCs | 6 independent 24-bit SD24_B converters for concurrent phase A/B/C and neutral current/voltage sampling |
| Accuracy | <0.1% error over 2000:1 dynamic range - meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 |
| Low-Power Modes | LPM4.5 draws 0.18 µA at 3 V - sustains RTC and backup RAM during AC mains failure |
| Supply Range | 1.8 V to 3.6 V operation with automatic auxiliary supply switching for seamless battery backup |
| Package | 100-pin LQFP (PZ) with 62 GPIOs, including dedicated pulse output pins for active/reactive energy calibration |
Pinout & Package
Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference voltage input | Provides stable reference for SD24_B ADCs; supports external 2.5 V reference or internal buffered reference |
| SD0P0/SD0N0–SD6P0/SD6N0 | Differential sigma-delta inputs | 6 differential pairs for current transformer, Rogowski coil, or shunt sensor interfaces per phase |
| COM0–COM7 | LCD segment commons | Drives up to 320-segment LCD display directly; supports contrast control and low-power LPM3 operation (3 µA) |
| AUXVCC1–AUXVCC3 | Backup subsystem supplies | Enable autonomous RTC, tamper detection, and SRAM retention during main power loss |
| P1.0/P1.1 | ADC10_A analog inputs | Measure on-chip temperature sensor and supply voltage (VeREF+/VeREF−) for system health monitoring |
| RST/NMI/SBWTDIO | Reset and debug interface | Combined reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O - no external pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Four-quadrant energy measurement | Enables bidirectional power flow tracking (import/export) per phase for net metering and distributed generation |
| Password-protected RTC with crystal calibration | Prevents unauthorized time manipulation; compensates for crystal aging and temperature drift in firmware |
| Integrated AES-128 encryption engine | Hardware-accelerated encryption for secure firmware updates, tariff data, and communication payloads |
| Dedicated pulse outputs (CF1/CF2) | Generates calibrated active/reactive energy pulses compatible with mechanical register interfaces and metrology test equipment |
| Flexible eUSCI port mapping | Allows UART/SPI/I²C peripherals to be assigned to any supported GPIO - simplifies PCB layout and routing |
Applications
| Smart Electricity Meter | Revenue-Grade Energy Monitor |
|---|---|
Use Scenario: Installed in residential/commercial 3-phase 4-wire service entrances for billing-grade consumption tracking. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time active/reactive energy integration, tariff switching, and secure data logging. Use Value: Meets ANSI C12.20 Class 0.2 accuracy with single-chip integration - eliminates external ADCs, op-amps, and calibration components. |
Use Scenario: Embedded in industrial submetering panels to monitor HVAC, lighting, and production line loads. IC Role / Device Role / Timing Role: High-precision energy accumulator with harmonic analysis support and 100-ms reporting intervals. Use Value: Six independent SD24_B channels enable simultaneous multi-circuit measurement without multiplexing delay or crosstalk. |
| AMI Endpoint Node | Tamper-Resistant Utility Meter |
Use Scenario: Integrated into RF-based Advanced Metering Infrastructure nodes communicating via PLC or wireless mesh networks. IC Role / Device Role / Timing Role: Host processor and metrology engine - manages AMI protocol stack while maintaining continuous energy accumulation. Use Value: Six eUSCI ports support concurrent UART (for RF module), SPI (for secure element), and I²C (for sensors) - no external bus arbitration needed. |
Use Scenario: Deployed in high-theft-risk regions where physical tampering (magnet, short, cover removal) must be detected and logged. IC Role / Device Role / Timing Role: Security-aware metrology controller with RTC tamper detect, AES-128, and password-protected registers. Use Value: Hardware-enforced tamper response - triggers immediate secure erase of calibration data and logs event timestamp with temperature-compensated RTC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6769IPZ | Same 100-pin PZ package, but includes 7 SD24_B ADCs (vs. 6) and 32KB RAM (vs. 16KB) | Required when neutral current measurement or larger firmware footprint (e.g., DLMS/COSEM stack) is needed | Select MSP430F6769IPZ if additional ADC channel or RAM headroom is critical; otherwise MSP430F6768IPZR offers optimal cost/performance balance. |
| MSP430F6748IPZ | Same package and pinout, but only 4 SD24_B ADCs, 256KB flash, and no AES-128 module | Suitable for cost-sensitive single-phase or simplified 3-phase meters without encryption or advanced tariff features | Choose MSP430F6748IPZ only for non-revenue or auxiliary monitoring roles - lacks metrology accuracy and security features of MSP430F6768IPZR. |
Compared with MSP430F6769IPZ, the MSP430F6768IPZR trades one SD24_B channel and 16KB RAM for lower BOM cost and identical metrology performance; versus MSP430F6748IPZ, it adds two ADCs, AES-128, and certified accuracy - making it the minimum viable SoC for ANSI/IEC-compliant 3-phase revenue meters.
Availability
MSP430F6768IPZR is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade energy monitors, and AMI endpoint nodes requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility deployments.
Supply support for MSP430F6768IPZR 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, embedded processing, and connectivity solutions with focus on energy efficiency, reliability, and system-level integration.
The MSP430F676x family is engineered specifically for polyphase electricity metering - integrating metrology-grade ADCs, secure processing, and low-power operation to replace discrete metering subsystems with a single SoC.
FAQ
What is the maximum number of differential inputs supported by the MSP430F6768IPZR?
The MSP430F6768IPZR supports six independent 24-bit sigma-delta ADC modules (SD24_B), each accepting a differential input pair - totaling 12 dedicated analog input pins (SD0P0/SD0N0 through SD6P0/SD6N0). This enables concurrent measurement of three phase currents, three phase voltages, and neutral current/voltage without multiplexing.
Does the MSP430F6768IPZR include hardware encryption capabilities?
Yes, the MSP430F6768IPZR integrates a dedicated hardware AES-128 encryption module that accelerates cryptographic operations for secure firmware updates, encrypted communication payloads, and protected tariff data storage - offloading computation from the CPU and ensuring deterministic timing.
What low-power modes are available on the MSP430F6768IPZR and their typical current draw?
The MSP430F6768IPZR offers multiple low-power modes: LPM3 (standby) draws 2.1 µA at 3 V with RTC active; LPM3.5 (RTC-only) consumes 0.34 µA; and LPM4.5 (shutdown) uses just 0.18 µA while retaining RTC and backup RAM - enabling >10-year battery life in backup operation.
Is the MSP430F6768IPZR pin-compatible with other devices in the F676x family?
Yes, the MSP430F6768IPZR in the 100-pin LQFP (PZ) package shares identical pinout and electrical characteristics with all other PZ-package F676x variants (e.g., MSP430F6769IPZ, MSP430F6767IPZ), enabling drop-in replacement within the same package footprint and PCB layout.
What metrology standards does the MSP430F6768IPZR support out-of-the-box?
The MSP430F6768IPZR implements TI's certified energy measurement software library, enabling compliance with ANSI C12.20 (Class 0.2) and IEC 62053-22 (Class 0.2) standards. Its <0.1% accuracy over 2000:1 dynamic range and four-quadrant measurement are validated per these specifications.
MSP430F6768IPZR 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, 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:
MSP430F6768IPZR FAQ
1.How can I place an order for MSP430F6768IPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6768IPZR 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 MSP430F6768IPZR reliable?
The price and inventory of MSP430F6768IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6768IPZR is usually 5 days.
3.What payment methods are accepted for MSP430F6768IPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6768IPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6768IPZR?
MSP430F6768IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6768IPZR 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 MSP430F6768IPZR?
For technical support, including MSP430F6768IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6768IPZR requirements.
6.How does Aetrix verify that MSP430F6768IPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F6768IPZR 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 MSP430F6768IPZR meets industry standards.
7.What is the process for return or replacement of MSP430F6768IPZR?
All MSP430F6768IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6768IPZR, 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 MSP430F6768IPZR part is unused and in its original packaging.
Return procedure for MSP430F6768IPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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