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Texas Instruments MSP430F67771AIPZR
- Part No.:
- MSP430F67771AIPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67771AIPZR.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430F67771AIPZR from Texas Instruments is a polyphase metering SoC designed for high-accuracy 3-phase energy measurement in utility smart meters. It integrates seven 24-bit sigma-delta ADCs (0.1% accuracy over 2000:1 dynamic range), a 25-MHz CPU with 32-bit multiplier, 256KB flash/32KB RAM, LCD controller (320 segments), and dual eUSCI_A/B interfaces. It supports ANSI C12.20 and IEC 62053 compliance in 3-phase 4-wire star configurations.
For engineers reviewing the MSP430F67771AIPZR datasheet, MSP430F67771AIPZR pinout, MSP430F67771AIPZR application, or MSP430F67771AIPZR equivalent, key selection criteria include metrology-grade ADC channel count, RTC tamper detection, pulse output capability for active/reactive energy calibration, and LQFP-128 package compatibility with EVM430-F6779 evaluation hardware.
Technical Context
The MSP430F67771AIPZR implements a dedicated metrology subsystem with independent SD24_B modulators per phase, enabling simultaneous 3-phase + neutral current/voltage sampling. Its analog front-end includes digital phase correction for CTs, temperature-compensated energy calculation, and 40–70 Hz line frequency support using single-point calibration.
Digital architecture features three-channel DMA for zero-CPU-load ADC data transfer, 16-bit CRC for firmware integrity, four 16-bit timers with nine capture/compare registers, and six eUSCI modules-four supporting UART/IrDA/SPI (eUSCI_A0–A3) and two supporting SPI/I²C (eUSCI_B0–B1)-all configurable for secure smart meter communication stacks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 256 KB single-cycle access - sufficient for full Energy Measurement Library + custom tariff logic and secure boot code |
| RAM | 32 KB single-cycle access - enables real-time accumulation of multiple energy registers (active, reactive, apparent) across 3 phases |
| Sigma-Delta ADCs | 7 × 24-bit SD24_B channels - supports simultaneous 3-phase voltage, 3-phase current, and neutral current measurement with <0.1% error |
| Supply Current (LPM3) | 2.1 µA at 3 V - ensures >10-year battery backup for RTC and critical registers during AC mains failure |
| LCD Driver | Up to 320 segments with contrast control - drives large-format utility meter displays without external bias circuitry |
| RTC Tamper Detection | Password-protected with crystal offset calibration and temperature compensation - meets ANSI C12.22 security requirements for revenue-grade meters |
| eUSCI Interfaces | 4 × eUSCI_A (UART/IrDA/SPI) + 2 × eUSCI_B (SPI/I²C) - supports concurrent HAN (Home Area Network), PLC, and optical port communication |
Pinout & Package
Package: 128-pin LQFP (PEU), 20 mm × 14 mm body size, 0.5 mm pitch, 90 GPIOs including dedicated metrology analog inputs and pulse outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 – SD6P0 / SD6N0 | Differential analog inputs for SD24_B modulators | Supports up to 7 independent 24-bit metrology channels (e.g., VA, VB, VC, VN, IA, IB, IC) with programmable gain |
| VREF | Reference voltage input for sigma-delta ADCs | Accepts external 2.5 V reference for highest metrology accuracy; internal reference also available |
| P1.0 / P1.1 | VeREF− / VeREF+ inputs | Enable differential reference sensing to reject common-mode noise in high-noise meter environments |
| P2.0–P2.3 | COM0–COM7 (LCD common outputs) | Drive up to 8 LCD commons for multiplexed 320-segment display; integrated charge pump eliminates external capacitors |
| P3.0 / P3.1 | eUSCI_A0 RX/TX | Dedicated UART interface for optical probe or RS-232 debug port with IrDA support for field firmware updates |
| P4.1 / P4.2 | eUSCI_A3 RX/TX | Secondary UART channel for HAN communication (e.g., Zigbee or Wi-SUN modem interface) |
| XIN / XOUT | 32.768 kHz crystal oscillator terminals | Connects to low-power RTC crystal; internal load caps eliminate need for external tuning capacitors |
| RST/NMI/SBWTDIO | Reset, NMI, and JTAG/SBW debug I/O | Single-pin 4-wire Spy-Bi-Wire interface enables in-system programming and real-time metrology waveform debugging |
Key Features
| Feature | Design Value |
|---|---|
| 4-quadrant energy measurement | Enables bidirectional power flow monitoring required for solar feed-in and EV charging applications |
| Dedicated pulse output pins | Hardware-generated active/reactive energy pulses simplify calibration traceability and eliminate software timing jitter |
| Temperature-compensated metrology | On-chip temperature sensor and compensation algorithm maintain <0.1% accuracy across –40°C to +85°C operating range |
| Low-power RTC mode (LPM3.5) | 0.34 µA operation preserves timekeeping and tamper logs for >5 years on a single CR2032 coin cell |
| Integrated security modules | Hardware AES accelerator and memory protection unit enable firmware signing and anti-tamper memory locking per IEC 62053-31 |
Applications
| Smart Electricity Meter | Revenue-Grade Submeter |
|---|---|
Use Scenario: Installed as the primary metrology engine in ANSI C12.20-compliant 3-phase 4-wire utility meters for residential/commercial billing. IC Role / Device Role / Timing Role: Performs real-time 3-phase voltage/current sampling, calculates kWh/kVArh, drives LCD display, and communicates via optical port and PLC. Use Value: Delivers certified 0.1% energy accuracy over 2000:1 dynamic range without external calibration components. |
Use Scenario: Embedded in panel-mounted submeters for tenant-level energy allocation in multi-tenant buildings. IC Role / Device Role / Timing Role: Measures active/reactive energy per circuit, stores 30-day history in flash, and reports via Modbus RTU over RS-485. Use Value: Integrates LCD, RTC, and dual UARTs to reduce BOM cost by eliminating discrete display drivers and communication transceivers. |
| Grid Edge Monitoring Node | EVSE Energy Management Unit |
Use Scenario: Deployed in distribution transformer monitoring units to track voltage sags, harmonics, and unbalance. IC Role / Device Role / Timing Role: Samples all 3-phase voltages and currents at 8 kSPS, computes RMS, THD, and sequence components in real time. Use Value: Seven independent SD24_B ADCs allow simultaneous acquisition without multiplexer-induced phase errors. |
Use Scenario: Used in Level 2 EV chargers to measure grid import/export and vehicle battery charge energy for billing compliance. IC Role / Device Role / Timing Role: Measures AC input and DC output energy, enforces ISO 15118-compliant metering, and logs tamper events. Use Value: Password-protected RTC with tamper detection satisfies UL 2594 and EN 62955 safety certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67791AIPZR | 512 KB flash, 32 KB RAM, identical peripheral set - adds 256 KB more program storage for advanced tariff engines and DLMS/COSEM stacks | Required for meters implementing complex multi-rate billing, remote firmware updates, and encrypted DLMS communication | Select when future-proofing for regulatory updates or adding cybersecurity features beyond base ANSI/IEC compliance |
| MSP430F67671AIPZR | 256 KB flash, 32 KB RAM, 6 × SD24_B ADCs - lacks one sigma-delta channel and removes SD6P0/SD6N0 pins | Suitable for 3-phase 3-wire meters without neutral current monitoring or simplified industrial submeters | Choose for cost-sensitive designs where neutral current measurement is not mandated by local utility specifications |
Compared with MSP430F67791AIPZR, the MSP430F67771AIPZR trades flash capacity for identical metrology precision and RTC security; versus MSP430F67671AIPZR, it retains full 7-channel SD24_B support essential for neutral-inclusive ANSI C12.20 Class 0.2 metering.
Availability
MSP430F67771AIPZR is available at Aetrix Electronics and suitable for smart electricity meters, revenue-grade submeters, grid edge monitoring nodes, and EVSE energy management units requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F67771AIPZR 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 and embedded processing technologies, with leadership in ultra-low-power microcontrollers and precision metrology solutions.
The MSP430F67771AIPZR belongs to TI's Metrology and Monitoring MCU portfolio, engineered specifically for revenue-grade energy measurement in smart grid infrastructure where accuracy, security, and ultra-low-power operation are non-negotiable.
FAQ
What metrology standards does the MSP430F67771AIPZR meet?
The MSP430F67771AIPZR meets or exceeds ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 accuracy requirements for active energy measurement. Its 24-bit sigma-delta ADCs achieve <0.1% error over a 2000:1 dynamic range, validated across 40–70 Hz line frequencies using single-point calibration - a key requirement for global utility certification. The device also supports 4-quadrant measurement needed for bidirectional solar feed-in compliance.
Does the MSP430F67771AIPZR support neutral current measurement?
Yes, the MSP430F67771AIPZR supports neutral current measurement via its seventh SD24_B sigma-delta ADC channel (SD6P0/SD6N0). This enables full 3-phase 4-wire star topology monitoring required by ANSI C12.20 for revenue-grade meters. The device's digital phase correction and temperature compensation ensure neutral current accuracy remains within ±0.1% across temperature and line frequency variations.
How many communication interfaces does the MSP430F67771AIPZR provide?
The MSP430F67771AIPZR provides six enhanced universal serial communication interfaces: four eUSCI_A modules (supporting UART, IrDA, and SPI) and two eUSCI_B modules (supporting SPI and I²C). This allows concurrent implementation of optical probe (UART), PLC modem (SPI), and HAN radio (I²C), all while maintaining deterministic metrology sampling - critical for time-synchronized grid monitoring applications.
What is the lowest power mode available for RTC operation on the MSP430F67771AIPZR?
The MSP430F67771AIPZR supports RTC Mode (LPM3.5) with a typical supply current of 0.34 µA at 3 V. In this mode, the real-time clock continues running with full tamper detection, crystal offset calibration, and password protection enabled - preserving timekeeping and security logs for over five years on a standard CR2032 coin cell, meeting ANSI C12.22 battery backup requirements.
Is the MSP430F67771AIPZR pin-compatible with other devices in the F677x1A family?
Yes, the MSP430F67771AIPZR in the 128-pin LQFP (PEU) package shares identical pinout and footprint with all other F677x1A variants (e.g., MSP430F67791AIPZR, MSP430F67761AIPZR). This enables hardware reuse across meter tiers - for example, designing a single PCB that supports entry-level (128KB flash) to premium (512KB flash) models via flash configuration, reducing NRE and qualification effort.
MSP430F67771AIPZR 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, 7x24b Sigma Delta Converter
- Number of I/O:
- 62
- 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:
MSP430F67771AIPZR FAQ
1.How can I place an order for MSP430F67771AIPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67771AIPZR 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 MSP430F67771AIPZR reliable?
The price and inventory of MSP430F67771AIPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67771AIPZR is usually 5 days.
3.What payment methods are accepted for MSP430F67771AIPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67771AIPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67771AIPZR?
MSP430F67771AIPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67771AIPZR 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 MSP430F67771AIPZR?
For technical support, including MSP430F67771AIPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67771AIPZR requirements.
6.How does Aetrix verify that MSP430F67771AIPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F67771AIPZR 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 MSP430F67771AIPZR meets industry standards.
7.What is the process for return or replacement of MSP430F67771AIPZR?
All MSP430F67771AIPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67771AIPZR, 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 MSP430F67771AIPZR part is unused and in its original packaging.
Return procedure for MSP430F67771AIPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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