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Texas Instruments MSP430F6777IPEU
- Part No.:
- MSP430F6777IPEU
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F6777IPEU.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
MSP430F6777IPEU from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electronic watt-hour meters. It integrates a 25-MHz ultra-low-power MCU, seven 24-bit sigma-delta ADCs, LCD controller (320 segments), AES-128 encryption, and real-time clock with temperature compensation - delivering <0.1% energy measurement accuracy over 2000:1 dynamic range and compliance with ANSI C12.20 and IEC 62053 standards.
For engineers reviewing the MSP430F6777IPEU datasheet, MSP430F6777IPEU pinout, MSP430F6777IPEU application, or MSP430F6777IPEU equivalent, this page provides verified technical context, exact package mapping (128-pin LQFP PEU), validated pin functions, key power/performance trade-offs, and two confirmed alternative SoCs for utility meter design.
Technical Context
The MSP430F6777IPEU implements a dedicated metering architecture with seven independent SD24_B sigma-delta modulators supporting differential inputs and programmable gain, enabling simultaneous phase A/B/C + neutral current/voltage sampling. Its on-chip energy measurement software library performs real-time active/reactive power, RMS, and kWh calculations without host CPU intervention.
It features dual power domains (AVCC/DVCC), auxiliary supply switching (AUXVCC1–3), and hardware-accelerated AES-128 for secure firmware updates and tamper-resistant data storage. The RTC operates in LPM3.5 at 0.34 µA while maintaining crystal offset calibration and temperature compensation.
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 modules. |
| RAM | 32 KB single-cycle RAM - supports real-time buffering of multi-channel ADC samples and concurrent communication protocol processing. |
| Sigma-Delta ADCs | 7 × 24-bit SD24_B converters - enables simultaneous 3-phase + neutral metrology with >100 dB SNR and <0.1% error across 2000:1 dynamic range. |
| Operating Voltage | 1.8 V to 3.6 V - allows direct interface with common 3.3 V and 2.5 V metering subsystems and battery-backed backup rails. |
| Low-Power Modes | LPM3: 2.1 µA; LPM3.5 (RTC active): 0.34 µA; LPM4.5 (shutdown): 0.18 µA - ensures >10-year battery life during mains failure with retained metering state. |
| Communication Interfaces | 4 × eUSCI_A (UART/SPI), 2 × eUSCI_B (SPI/I²C) - supports concurrent PLC, RF, optical port, and HAN connectivity in smart meter gateways. |
| LCD Driver | Up to 320 segments with contrast control - drives high-resolution industrial LCD displays without external bias generators. |
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 | Supports 7-channel simultaneous sampling of CT/ Rogowski/shunt-based current and voltage signals with programmable gain and offset calibration. |
| VREF | Reference voltage input | Accepts external precision reference (e.g., REF5025) to stabilize ADC accuracy across temperature and supply variations. |
| COM0–COM7 | LCD segment/common outputs | Drives up to 320-segment LCD directly; COM0–COM7 serve as common lines for multiplexed display control. |
| AUXVCC1–AUXVCC3 | Backup power domain supplies | Enable seamless switchover to battery/supercap during AC mains loss; AUXVCC3 powers RTC and SRAM retention in LPM4.5. |
| XIN / XOUT | 32.768 kHz crystal oscillator terminals | Connects to low-frequency crystal for RTC operation with ±5 ppm stability; internal digital calibration compensates for aging and temperature drift. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated pulse output pins | Hardware-generated active/reactive energy pulses (e.g., CF1/CF2) enable direct connection to mechanical test meters and calibration equipment without CPU overhead. |
| Digital phase correction | Compensates CT-induced phase shift in real time using on-chip DSP engine - eliminates need for external analog correction networks. |
| Password-protected RTC | Prevents unauthorized clock manipulation via hardware-enforced access control and tamper-detect interrupt on RTCCAP pins. |
| Four-quadrant energy measurement | Calculates import/export active/reactive energy per phase independently - essential for bidirectional grid-tie and net-metering applications. |
| Temperature-compensated metrology | On-die temperature sensor feeds real-time correction coefficients into energy calculation engine - maintains <0.1% accuracy from –40°C to +85°C. |
Applications
| 3-Phase Revenue Meter | AMI Gateway Node |
|---|---|
Use Scenario: Installed in utility substations and commercial buildings to measure billed energy consumption across three live phases and neutral conductor. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time energy accumulation, tariff switching, secure data logging, and optical/PLC communication. Use Value: Meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S requirements with single-chip integration - reduces BOM cost by eliminating external ADCs, RTCs, and crypto accelerators. |
Use Scenario: Embedded in smart meter head-end units to aggregate and forward consumption data via cellular, RF mesh, or PLC to utility backend systems. IC Role / Device Role / Timing Role: Secure communications hub with AES-128 encryption, multi-protocol UART/SPI/I²C interfaces, and tamper-evident RTC timestamping. Use Value: Enables DLMS/COSEM-compliant secure firmware updates and encrypted meter reading transmission - satisfies NISTIR 7628 and EN 14908 security mandates. |
| Energy Monitoring Panel | Tamper-Resistant Submeter |
Use Scenario: Deployed in industrial facilities to monitor real-time power quality (harmonics, THD, PF) and load profiling across multiple feeders. IC Role / Device Role / Timing Role: High-precision metrology engine with 24-bit ADCs, 40–70 Hz adaptive line frequency tracking, and RMS/FFT-capable firmware. Use Value: Delivers 0.1% accuracy across 2000:1 dynamic range - captures both standby leakage currents (<1 mA) and peak loads (>100 A) without range switching. |
Use Scenario: Used in tenant submetering systems where physical tampering (magnet, short-circuit, clock manipulation) must be detected and logged. IC Role / Device Role / Timing Role: Anti-tamper SoC with RTC tamper detect pins, password-locked registers, hardware AES, and non-volatile event logging in backup RAM. Use Value: Detects and records tamper events (e.g., case opening, magnetic field, clock glitch) with microsecond timestamp - meets ANSI C12.1 and IEC 62053-31 requirements. |
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 | 512 KB flash, 32 KB RAM, 7 SD24_B ADCs - identical peripheral set but double flash capacity for larger firmware or dual-application support. | Preferred when field-upgradable advanced features (e.g., waveform capture, harmonic analysis) require >256 KB code space. | Select MSP430F6779IPEU if future-proofing for firmware expansion or dual-role metering+gateway functionality is required. |
| MSP430F6767IPEU | 256 KB flash, 32 KB RAM, 6 SD24_B ADCs - same memory and package, but one fewer sigma-delta channel and no SD6P0/SD6N0 pins. | Suitable for 2-phase or simplified 3-phase meters where neutral current measurement is omitted or handled externally. | Choose MSP430F6767IPEU for cost-sensitive 2-phase meters or designs omitting neutral current sensing to reduce external component count. |
Compared with MSP430F6777IPEU, the MSP430F6779IPEU offers scalable firmware headroom without altering metrology performance, while the MSP430F6767IPEU reduces channel count and system complexity at the expense of neutral-phase measurement capability - enabling tiered product positioning within the same LQFP-128 footprint.
Availability
MSP430F6777IPEU is available at Aetrix Electronics and suitable for 3-phase revenue metering, AMI gateway development, and industrial energy monitoring requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MSP430F6777IPEU 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 specializing in analog, embedded processing, and energy-efficient technologies for industrial, automotive, and infrastructure markets.
The MSP430F677x family was engineered specifically for revenue-grade polyphase electricity meters - integrating metrology-grade ADCs, secure firmware execution, and ultra-low-power RTC operation to minimize bill-of-materials and meet global utility certification requirements.
FAQ
What is the maximum dynamic range supported by the MSP430F6777IPEU for phase current measurement?
The MSP430F6777IPEU achieves <0.1% measurement accuracy over a 2000:1 dynamic range for phase current, validated per ANSI C12.20 and IEC 62053-22 standards. This performance is enabled by its seven 24-bit sigma-delta ADCs with programmable gain and digital phase correction - allowing precise capture of both milliamp-level standby loads and hundred-amp peak currents without range switching.
Does the MSP430F6777IPEU include hardware acceleration for cryptographic operations?
Yes, the MSP430F6777IPEU integrates a dedicated hardware AES-128 module that performs encryption/decryption in parallel with CPU operation. This enables secure firmware updates, encrypted meter data transmission, and tamper-resistant key storage - all without consuming CPU cycles or increasing latency in time-critical metrology tasks.
What package type and pin count does the MSP430F6777IPEU use?
The MSP430F6777IPEU uses a 128-pin LQFP package designated "PEU", with 20 mm × 14 mm body dimensions and 0.4 mm lead pitch. It provides 90 general-purpose I/O pins, including dedicated SD24_B analog inputs, LCD segment/common drivers, and auxiliary supply rails - all mapped in TI's SLAS768E datasheet Section 4.1.
How does the MSP430F6777IPEU handle power loss during metering operation?
The MSP430F6777IPEU supports seamless transition to battery backup via three auxiliary supply rails (AUXVCC1–3). In LPM4.5 shutdown mode, it draws only 0.18 µA while retaining RTC time, SRAM contents, and critical metrology state - enabling >10 years of data retention on a single CR2032 cell during extended mains failure.
Which communication interfaces are available on the MSP430F6777IPEU for smart meter connectivity?
The MSP430F6777IPEU provides six enhanced universal serial communication interfaces: four eUSCI_A modules configurable as UART or SPI, and two eUSCI_B modules configurable as SPI or I²C. These support concurrent optical port (UART), PLC modem (SPI), RF transceiver (SPI), and HAN interface (I²C) - meeting DLMS/COSEM and ANSI C12.22 stack requirements.
MSP430F6777IPEU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tube
- 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:
- 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:
MSP430F6777IPEU FAQ
1.How can I place an order for MSP430F6777IPEU through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6777IPEU 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 MSP430F6777IPEU reliable?
The price and inventory of MSP430F6777IPEU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6777IPEU is usually 5 days.
3.What payment methods are accepted for MSP430F6777IPEU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6777IPEU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6777IPEU?
MSP430F6777IPEU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6777IPEU 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 MSP430F6777IPEU?
For technical support, including MSP430F6777IPEU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6777IPEU requirements.
6.How does Aetrix verify that MSP430F6777IPEU is sourced from the original manufacturer or authorized distributors?
All MSP430F6777IPEU 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 MSP430F6777IPEU meets industry standards.
7.What is the process for return or replacement of MSP430F6777IPEU?
All MSP430F6777IPEU units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6777IPEU, 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 MSP430F6777IPEU part is unused and in its original packaging.
Return procedure for MSP430F6777IPEU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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