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Texas Instruments MSP430F6776IPEUR
- Part No.:
- MSP430F6776IPEUR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F6776IPEUR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,752
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Product details
Overview
MSP430F6776IPEUR 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), AES-128 encryption, and RTC with temperature compensation - delivering <0.1% energy measurement accuracy over 2000:1 dynamic range per phase in utility metering applications.
For engineers reviewing the MSP430F6776IPEUR datasheet, MSP430F6776IPEUR pinout, MSP430F6776IPEUR application, or MSP430F6776IPEUR equivalent, key selection criteria include ANSI C12.20 / IEC 62053 compliance, multi-sensor support (CT/Rogowski/shunt), four-quadrant power calculation, pulse output for active/reactive energy calibration, and ultra-low-power LPM3.5 mode (0.34 µA) for backup operation during AC mains failure.
Technical Context
The MSP430F6776IPEUR implements a dedicated metering architecture with seven independent SD24_B sigma-delta modulators - six for phase/neutral current sensing and one for system voltage - each supporting differential inputs and programmable gain. Its energy measurement engine executes TI's certified energy library, enabling simultaneous active/reactive/apparent energy, RMS voltage/current, and phase angle computation without host CPU intervention.
It features dual-domain power management: AVCC/AVSS for analog subsystems (including SD24_B and reference circuitry), DVCC/DVSS for digital core, and AUXVCCx supplies for RTC and backup subsystems. The device supports automatic supply switching between main and backup sources and includes hardware-accelerated AES-128 for secure firmware updates and tamper-resistant data storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 256 KB single-cycle flash - sufficient for full metering firmware, communication stacks (DLMS/IEC 62056), and field-upgradable security patches. |
| RAM | 16 KB single-cycle RAM - supports real-time energy accumulation buffers, tariff schedule tables, and transient event logging. |
| Sigma-Delta ADCs | 7 × 24-bit SD24_B converters - enables concurrent sampling of 3-phase + neutral currents and system voltage with >100 dB SNR and <0.1% error across 2000:1 dynamic range. |
| Line Frequency Range | 40–70 Hz - supports global utility standards (50/60 Hz) with single-point calibration, eliminating need for region-specific firmware variants. |
| LPM3.5 Current | 0.34 µA at 3 V - allows >10-year battery life in RTC+backup RAM retention mode during mains outage. |
| LCD Driver | Up to 320 segments with contrast control - drives high-resolution segmented displays for metrology-grade meter UI without external controllers. |
| Communication Interfaces | 6 eUSCI ports configurable as 4 UART / 6 SPI / 2 I²C - supports concurrent PLC, RF (sub-GHz), optical port, and HAN connectivity in smart meter designs. |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 – SD6P0 / SD6N0 | Differential analog inputs for SD24_B modulators | Accept direct connection from current transformers, Rogowski coils, or shunts; internal PGA supports gain settings up to 32× for low-current detection. |
| VREF | Reference voltage input | Accepts external precision reference (e.g., 2.5 V) or internal bandgap; used by all SD24_B converters for absolute energy accuracy traceability. |
| COM0–COM7 | LCD common outputs | Drive up to 8 multiplexed LCD commons; paired with segment pins (e.g., P1.6/COM2) to enable 320-segment display with software-controlled bias. |
| AUXVCC3 | RTC and backup subsystem supply | Connects to coin-cell or supercapacitor; powers RTC, backup RAM, and tamper-detect circuitry independently during main power loss. |
| RST/NMI/SBWTDIO | Reset, NMI, and Spy-Bi-Wire debug I/O | Single-pin multifunction interface for production programming, in-system debugging, and brownout-triggered NMI events. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase lag in real time using on-chip DSP engine - eliminates external calibration components and improves power factor accuracy. |
| Password-protected RTC | Hardware-enforced access control with crystal offset calibration and temperature compensation - ensures ±2 ppm accuracy over full industrial temperature range. |
| Four-quadrant energy measurement | Computes active/reactive energy separately for import/export in each phase - required for bidirectional grid-tie and net-metering compliance. |
| Pulse output pins | Dedicated hardware outputs for active (kWh) and reactive (kVARh) energy pulses - meets ANSI C12.18 optical port timing requirements without CPU overhead. |
| Temperature-compensated metrology | On-die temperature sensor feeds real-time correction coefficients into energy calculation engine - maintains <0.1% accuracy across –40°C to +85°C ambient. |
Applications
| Smart Electricity Meter | Revenue-Grade Energy Monitor |
|---|---|
Use Scenario: Installed in residential/commercial 3-phase 4-wire star-connected utility meters for billing-grade energy measurement. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time active/reactive/apparent energy accumulation, tariff switching, and secure data logging. Use Value: Meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S accuracy requirements with no external calibration components. | Use Scenario: Embedded in industrial submetering panels to track energy consumption per production line or HVAC zone. IC Role / Device Role / Timing Role: Standalone energy analyzer capturing RMS voltage/current, harmonic distortion (THD), and demand intervals every 15 minutes. Use Value: Seven SD24_B ADCs enable simultaneous sampling of all three phases and neutral - eliminating inter-channel skew and enabling true vector-based power analysis. |
| AMI Gateway Node | Tamper-Resistant Prepayment Meter |
Use Scenario: Integrated into cellular/NB-IoT-enabled AMI gateways aggregating data from multiple downstream meters. IC Role / Device Role / Timing Role: Host processor running DLMS/COSEM stack while offloading metrology to dedicated SD24_B hardware engines. Use Value: Hardware AES-128 encryption and tamper-detect pins (RTC_TAMPER) ensure secure firmware updates and detect enclosure opening, magnet attacks, or voltage injection. | Use Scenario: Deployed in prepayment electricity meters requiring secure credit validation and load disconnection control. IC Role / Device Role / Timing Role: Secure metering controller managing token validation, remaining credit calculation, and relay driver interface via GPIO. Use Value: Password-protected RTC prevents clock manipulation; integrated security modules enforce cryptographic authentication before credit top-up execution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6776IPZ | Same silicon, 100-pin LQFP package with 62 I/Os (vs. 90 I/Os in PEU); reduced SD24_B channel count not applicable - identical SD24_B count (7) and metrology performance. | Targeted at space-constrained meter designs where fewer GPIOs suffice and PCB area is premium. | Select when board layout requires smaller footprint and I/O count reduction is acceptable; same firmware compatibility and metrology accuracy. |
| MSP430F6766IPEU | 6 SD24_B converters (vs. 7), 256KB flash/16KB RAM same; lacks dedicated neutral current measurement path - limits 3-phase 4-wire configurations requiring independent neutral monitoring. | Suitable for 3-phase 3-wire delta systems or cost-optimized meters omitting neutral energy accounting. | Choose only if neutral current measurement is not required; verify firmware compatibility with reduced SD24_B instance count. |
Compared with MSP430F6776IPZ, the MSP430F6776IPEUR offers 28 additional GPIOs and full 128-pin routing flexibility for complex meter peripherals; compared with MSP430F6766IPEU, it provides the seventh SD24_B channel essential for independent neutral current sensing in 4-wire star topologies mandated by ANSI C12.20.
Availability
MSP430F6776IPEUR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI gateway node development requiring stable component supply, long-term lifecycle support, and traceable sourcing for utility-certified designs.
Supply support for MSP430F6776IPEUR 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 for industrial, automotive, and consumer applications.
The MSP430F6776IPEUR belongs to TI's polyphase metering SoC product line, engineered specifically for ANSI/IEC-compliant revenue meters - integrating metrology accuracy, ultra-low-power operation, and hardware security into a single chip to reduce BOM cost and certification effort.
FAQ
What is the maximum dynamic range supported by the MSP430F6776IPEUR for phase current measurement?
The MSP430F6776IPEUR achieves <0.1% measurement error over a 2000:1 dynamic range for phase current, verified per ANSI C12.20 and IEC 62053-22 standards. This is enabled by its seven 24-bit sigma-delta ADCs with programmable gain amplifiers and on-chip digital filtering - allowing accurate resolution from milliamp-level standby loads to hundreds-of-amps peak currents without range switching. The MSP430F6776IPEUR maintains this specification across –40°C to +85°C using integrated temperature compensation.
Does the MSP430F6776IPEUR support hardware-accelerated encryption for secure firmware updates?
Yes, the MSP430F6776IPEUR includes a dedicated hardware AES-128 module compliant with FIPS PUB 197. It supports ECB/CBC modes with zero CPU overhead, enabling authenticated firmware image decryption and secure boot verification. This capability is integral to anti-tamper design in utility meters and is used alongside password-protected RTC and tamper-detect pins. The MSP430F6776IPEUR leverages this module to meet DLMS/COSEM security requirements for remote firmware upgrades.
How many independent sigma-delta ADC channels does the MSP430F6776IPEUR provide, and what are their primary metrology roles?
The MSP430F6776IPEUR integrates seven independent 24-bit SD24_B sigma-delta ADCs. Six are allocated to differential current sensing (Phase A/B/C and Neutral, each with dedicated +/− inputs), and one measures system voltage (VASYS1/VASYS2). All channels operate simultaneously with synchronized sampling, enabling true vector-based power calculations and eliminating inter-channel timing skew. This architecture is fundamental to the MSP430F6776IPEUR's four-quadrant energy measurement capability.
What low-power modes are available on the MSP430F6776IPEUR, and which is used for RTC operation during AC mains failure?
The MSP430F6776IPEUR supports LPM3 (2.1 µA), LPM3.5 (0.34 µA), and LPM4.5 (0.18 µA) modes. For RTC operation during AC mains failure, LPM3.5 is used - it retains RTC, backup RAM, and tamper-detect functionality while powering down the CPU, flash, and most peripherals. The MSP430F6776IPEUR achieves 0.34 µA at 3 V in this mode, enabling >10-year coin-cell battery life for timekeeping and critical data retention.
Is the MSP430F6776IPEUR pin-compatible with other devices in the MSP430F677x family?
Yes, the MSP430F6776IPEUR is pin-compatible with all 128-pin LQFP (PEU) variants in the MSP430F677x family - including MSP430F6779IPEU, MSP430F6778IPEU, MSP430F6777IPEU, and MSP430F6775IPEU - sharing identical pinout, power domains, and peripheral mappings. Firmware is binary-compatible across these parts within the same flash/RAM configuration, enabling scalable meter designs where higher-flash variants can be upgraded without PCB revision. The MSP430F6776IPEUR serves as the mid-tier option balancing metrology capability and memory resources.
MSP430F6776IPEUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-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, 7x24b Sigma Delta Converter
- Number of I/O:
- 90
- 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:
MSP430F6776IPEUR FAQ
1.How can I place an order for MSP430F6776IPEUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6776IPEUR 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 MSP430F6776IPEUR reliable?
The price and inventory of MSP430F6776IPEUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6776IPEUR is usually 5 days.
3.What payment methods are accepted for MSP430F6776IPEUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6776IPEUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6776IPEUR?
MSP430F6776IPEUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6776IPEUR 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 MSP430F6776IPEUR?
For technical support, including MSP430F6776IPEUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6776IPEUR requirements.
6.How does Aetrix verify that MSP430F6776IPEUR is sourced from the original manufacturer or authorized distributors?
All MSP430F6776IPEUR 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 MSP430F6776IPEUR meets industry standards.
7.What is the process for return or replacement of MSP430F6776IPEUR?
All MSP430F6776IPEUR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6776IPEUR, 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 MSP430F6776IPEUR part is unused and in its original packaging.
Return procedure for MSP430F6776IPEUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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