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Texas Instruments MSP430F6779IPZ
- Part No.:
- MSP430F6779IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F6779IPZ.pdf
- Description:
- IC MCU 16BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,518
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Product details
Overview
MSP430F6779IPZ from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electronic watt-hour meters, featuring seven 24-bit sigma-delta ADCs, 512KB flash, 32KB RAM, LCD controller (320 segments), and hardware AES-128 encryption - all in a 100-pin LQFP package operating from 1.8 V to 3.6 V.
For engineers reviewing the MSP430F6779IPZ datasheet, MSP430F6779IPZ pinout, MSP430F6779IPZ application, or MSP430F6779IPZ equivalent, this device is selected for high-accuracy energy measurement systems requiring ANSI C12.20/IEC 62053 compliance, ultra-low-power standby (0.34 µA in LPM3.5), and integrated metrology peripherals including digital phase correction and four-quadrant power calculation.
Technical Context
The MSP430F6779IPZ integrates TI's 24-bit SD24_B sigma-delta modulators with differential inputs and programmable gain, supporting simultaneous sampling across up to three phases plus neutral. Its dedicated metrology engine performs real-time active/reactive energy computation, pulse output generation, and temperature-compensated measurements within 40–70 Hz line frequency range using single calibration.
It combines a 25-MHz MSP430 CPU with 32-bit hardware multiplier, six eUSCI_A (UART/SPI) and two eUSCI_B (SPI/I²C) interfaces, four 16-bit timers, and an RTC with crystal offset calibration - enabling full tariff management, AMR/AMI communication, and tamper detection without external co-processors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 512 KB - supports full energy measurement library, tariff tables, firmware updates, and secure boot without external storage. |
| RAM | 32 KB - enables real-time accumulation of multiple energy registers (active, reactive, apparent), waveform capture, and communication buffers. |
| Sigma-Delta ADCs | 7 × 24-bit - provides independent channel acquisition for phase A/B/C currents, voltages, neutral, and reference, enabling <0.1% accuracy over 2000:1 dynamic range. |
| Supply Voltage Range | 1.8 V to 3.6 V - allows direct operation from regulated 3.3 V or battery-backed 2.0 V rails, with automatic supply switching during mains failure. |
| Low-Power Mode (LPM3.5) | 0.34 µA at 3 V - sustains RTC, backup RAM, and tamper monitoring during AC loss while retaining critical meter data for >10 days on typical supercapacitor. |
| LCD Driver | Up to 320 segments - drives multi-line utility display with contrast control, eliminating need for external segment drivers in meter front-ends. |
| Security | Hardware AES-128 + password-protected RTC + tamper detect pins - meets anti-tamper requirements per IEC 62053-31 and ANSI C12.22. |
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 |
|---|---|---|
| 1–8, 10–17, 19–21, 24–25, 32–45, 47–61, 63–100 | General-purpose I/O / Peripheral multiplexed | 62 configurable GPIOs support LCD COM/SEG, UART/SPI/I²C, timer capture, ADC input routing, and tamper sensing. |
| 9, 18, 22–23, 26–31, 46, 62, 64–99 | Analog power, reference, and metrology inputs | Dedicated AVCC/AVSS, VREF, SDxP0/SDxN0 (7 sigma-delta differential pairs), VASYS/VDYSYS, AUXVCCx for isolated metrology subsystem biasing. |
| XIN/XOUT (pins 27–28) | Low-frequency crystal oscillator interface | Supports 32.768 kHz crystal for RTC with built-in offset calibration and temperature compensation - no external trim required. |
| RST/NMI/SBWTDIO (pin 102) | Reset, NMI, and Spy-Bi-Wire debug | Enables in-system programming, boundary-scan testing, and secure bootloader access via 2-wire interface. |
| LCDCAP/R33 (pin 30) | LCD charge pump capacitor connection | Must be connected to DVSS if unused; otherwise anchors internal charge pump for segment voltage generation in low-power LCD mode. |
Key Features
| Feature | Design Value |
|---|---|
| ANSI C12.20 & IEC 62053 compliance | Validated metrology accuracy <0.1% over 2000:1 current dynamic range - eliminates need for external calibration hardware in Class 0.2 meters. |
| Digital phase correction | Compensates CT-induced phase errors in real time - removes manual analog trimming and improves power factor accuracy at light loads. |
| Pulse output pins | Dedicated active/reactive energy pulse outputs (e.g., PULSE_A, PULSE_R) - enable direct LED calibration and third-party verification without software intervention. |
| Four-quadrant measurement | Per-phase and cumulative active/reactive energy calculation - supports bidirectional grid-tie applications and net metering with import/export separation. |
| Temperature-compensated energy | On-chip temperature sensor feeds real-time correction to SD24_B and RTC - maintains accuracy across –40°C to +85°C without external thermistor network. |
| Backup subsystem (AUXVCC3) | Independent 3.3 V auxiliary rail powers RTC, tamper logic, and backup RAM during main supply failure - ensures zero data loss during brownouts. |
Applications
| Smart Electricity Meter | Revenue-Grade Energy Monitor |
|---|---|
Use Scenario: Installed in residential/commercial 3-phase 4-wire utility meters for billing-grade kWh/kVARh measurement. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time energy computation, pulse generation, tariff switching, and secure data logging. Use Value: Meets ANSI C12.20 Class 0.2 accuracy with single calibration across 40–70 Hz, reducing factory test time and field recalibration cycles. |
Use Scenario: Embedded in industrial submetering panels for load profiling, demand response, and power quality analysis. IC Role / Device Role / Timing Role: High-resolution waveform capture and harmonic analysis engine using 24-bit SD24_B ADCs synchronized to line frequency. Use Value: Simultaneous 7-channel sampling enables phase-resolved voltage/current phasor calculation and THD estimation without external FPGA. |
| AMI Endpoint Node | Tamper-Resistant Grid Sensor |
Use Scenario: Integrated into cellular/NB-IoT smart meter modules communicating consumption data to utility head-end systems. IC Role / Device Role / Timing Role: Host processor managing DLMS/COSEM stack, secure OTA updates, and encrypted payload transmission via UART/SPI-connected modem. Use Value: Hardware AES-128 acceleration and password-protected RTC prevent unauthorized firmware modification and timestamp spoofing. |
Use Scenario: Deployed in outdoor distribution transformers to detect magnetic, thermal, and physical tampering events. IC Role / Device Role / Timing Role: Tamper monitor with dedicated RTC alarm, GPIO-based switch detection, and secure event logging in backup RAM. Use Value: LPM3.5 current of 0.34 µA enables >1-year battery life on coin cell while maintaining continuous tamper vigilance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6779IPEU | 128-pin LQFP, 90 GPIOs, identical core specs but larger package and higher I/O count. | Suitable for meters requiring more LCD segments, additional UART/SPI channels, or expanded sensor interfacing. | Select when board layout accommodates 20×14 mm footprint and design needs >62 I/Os or enhanced LCD drive capability. |
| MSP430F6769IPZ | Same 100-pin LQFP package but only six 24-bit SD24_B ADCs and 256 KB flash. | Targeted at cost-sensitive Class 0.5 meters or 2-phase implementations where neutral current measurement is omitted. | Choose for reduced BOM cost where full 7-ADC capability and 512 KB flash are not required for firmware or data retention. |
Compared with MSP430F6779IPEU, the MSP430F6779IPZ offers identical metrology performance in a smaller footprint but trades 28 GPIOs for space-constrained designs; versus MSP430F6769IPZ, it adds one sigma-delta ADC channel and doubles flash to support advanced tariff logic and future firmware extensions.
Availability
MSP430F6779IPZ is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI endpoint node development requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MSP430F6779IPZ 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 delivering analog and embedded processing solutions, with leadership in low-power microcontrollers and precision metrology ICs.
The MSP430F6779IPZ belongs to TI's polyphase metering SoC product line, engineered specifically for ANSI/IEC-compliant utility meters that demand metrology-grade accuracy, ultra-low-power operation, and integrated security - minimizing external component count and system-level validation effort.
FAQ
What is the maximum number of independent 24-bit sigma-delta ADC channels supported by the MSP430F6779IPZ?
The MSP430F6779IPZ supports up to seven independent 24-bit sigma-delta ADC channels (SD24_B). These are configured as differential input pairs (e.g., SD0P0/SD0N0 through SD6P0/SD6N0) and are used for simultaneous sampling of phase A/B/C currents, voltages, neutral, and reference signals - enabling full 3-phase+neutral energy computation in the MSP430F6779IPZ.
Does the MSP430F6779IPZ include hardware acceleration for cryptographic operations?
Yes, the MSP430F6779IPZ integrates a dedicated hardware AES-128 encryption module. This accelerator offloads cipher operations from the CPU, enabling fast, deterministic, and side-channel-resistant encryption of meter data, firmware updates, and DLMS/COSEM payloads - a key requirement for secure AMI deployments using the MSP430F6779IPZ.
What is the lowest power consumption mode available on the MSP430F6779IPZ, and what functions remain active?
The MSP430F6779IPZ achieves 0.34 µA in RTC mode (LPM3.5) at 3 V. In this state, the real-time clock, backup RAM, tamper detection circuitry, and AUXVCC3-powered subsystem remain fully operational - allowing continuous timekeeping, secure event logging, and mains-failure response without data loss, making it ideal for battery-backed meter applications using the MSP430F6779IPZ.
How does the MSP430F6779IPZ support compliance with ANSI C12.20 and IEC 62053 standards?
The MSP430F6779IPZ meets ANSI C12.20 and IEC 62053 standards through its <0.1% energy measurement accuracy over 2000:1 dynamic range, digital phase correction for CT errors, temperature-compensated metrology, and four-quadrant power calculation. These capabilities are validated in TI's energy measurement software library - pre-integrated and tested for use with the MSP430F6779IPZ.
What package type and pin count does the MSP430F6779IPZ use, and how does it differ from the IPEU variant?
The MSP430F6779IPZ uses a 100-pin LQFP (PZ) package measuring 14 mm × 14 mm, with 62 GPIOs. It differs from the MSP430F6779IPEU (128-pin LQFP, 20 mm × 14 mm, 90 GPIOs) solely in package size and I/O count - all core metrology, memory, and peripheral specifications are identical between the two variants of the MSP430F6779IPZ.
MSP430F6779IPZ 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, 7x24b Sigma Delta Converter
- Number of I/O:
- 62
- Program Memory Size:
- 512KB (512K 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:
MSP430F6779IPZ FAQ
1.How can I place an order for MSP430F6779IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6779IPZ 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 MSP430F6779IPZ reliable?
The price and inventory of MSP430F6779IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6779IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F6779IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6779IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6779IPZ?
MSP430F6779IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6779IPZ 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 MSP430F6779IPZ?
For technical support, including MSP430F6779IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6779IPZ requirements.
6.How does Aetrix verify that MSP430F6779IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F6779IPZ 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 MSP430F6779IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F6779IPZ?
All MSP430F6779IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6779IPZ, 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 MSP430F6779IPZ part is unused and in its original packaging.
Return procedure for MSP430F6779IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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