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Texas Instruments MSP430F67641IPNR
- Part No.:
- MSP430F67641IPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430F67641IPNR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,510
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Product details
Overview
MSP430F67641IPNR from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electricity meters, featuring three independent 24-bit sigma-delta ADCs with differential inputs and variable gain, 128KB flash/8KB RAM, and real-time clock with dedicated AUXVCC3 supply. It delivers <0.5% accuracy over 2000:1 dynamic range for phase current and meets ANSI C12.20 and IEC 63053 standards in utility metering applications.
For engineers reviewing the MSP430F67641IPNR datasheet, MSP430F67641IPNR pinout, MSP430F67641IPNR application, or MSP430F67641IPNR equivalent, this device supports four communication interfaces (UART/SPI/I²C), ultra-low-power LCD driving (320 segments), and precise four-quadrant energy measurement across three phases - critical for smart meter firmware development, metrology validation, and AMI/AMR system integration.
Technical Context
The MSP430F67641IPNR integrates TI's high-precision 24-bit sigma-delta modulators (SD24_B) with configurable gain and differential input pairs for simultaneous voltage/current sampling per phase, synchronized by internal trigger generator. Its 25-MHz CPU with 32-bit hardware multiplier executes TI's energy measurement software library for active/reactive/apparent power, RMS, and harmonic calculations in real time.
It employs dual-domain power management: analog subsystem powered by AVCC/AUXVCCx with dedicated RTC supply (AUXVCC3), and digital core powered by DVCC/VDSYS, enabling LPM3.5 mode at 1.24 µA while maintaining RTC operation and crystal offset calibration - essential for battery-backed meter data retention during AC mains failure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | Three independent 24-bit sigma-delta ADCs with differential inputs and programmable gain - enables simultaneous high-accuracy current/voltage sampling per phase without external signal conditioning. |
| Energy Accuracy | <0.5% error over 2000:1 dynamic range for phase current - certified for revenue-grade billing in ANSI C12.20 Class 0.5 and IEC 63053 Class 0.5 meters. |
| CPU & Memory | 25-MHz MSP430 CPU with 32-bit hardware multiplier; 128KB flash (single-cycle execution); 8KB RAM (single-cycle access) - supports full tariff management, communications stack, and metrology algorithms in one chip. |
| Power Modes | LPM3: 2.5 µA @ 3 V (RTC active); LPM3.5: 1.24 µA @ 3 V (RTC + crystal cal); LPM4.5: 0.78 µA @ 3 V - minimizes backup battery size and extends data retention during power outage. |
| LCD Support | Integrated LCD controller driving up to 320 segments with contrast control and dedicated LCDCAP pin - eliminates external display driver IC in cost-sensitive meter designs. |
| Communication Interfaces | Four eUSCI modules configurable as UART (3), SPI (3), or I²C (1) - supports dual-port HART, optical port, PLC, or RF module interfacing without external transceivers. |
| Package & I/O | 80-pin LQFP (PN), industrial temperature range (–40°C to +85°C), 52 GPIOs - matches standard meter PCB layouts and supports sensor routing for CT, shunt, or Rogowski coil inputs. |
Pinout & Package
80-pin LQFP (PN) package, 12 mm × 12 mm body size, with 52 general-purpose I/O pins and dedicated analog/digital power domains (AVCC/AVSS, DVCC/DVSS, AUXVCC1–3, VASYS, VDSYS). Pin functions include three SD24_B analog input pairs (SD0P0/SD0N0 through SD2P0/SD2N0), six LCD COM outputs (COM0–COM7), 32 LCD segment outputs (S0–S39), and four eUSCI interface blocks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 SD1P0 / SD1N0 SD2P0 / SD2N0 |
SD24_B converter 0–2 differential analog inputs | Accept isolated current/voltage signals from CTs, Rogowski coils, or shunts; support programmable gain and internal reference for direct connection without op-amp front-end. |
| AUXVCC3 | Dedicated RTC power supply | Enables RTC operation with crystal offset and temperature calibration during main power loss - ensures timekeeping integrity and timestamped event logging. |
| LCDCAP/R33 | LCD charge pump capacitor node | Must be connected to DVSS if unused; otherwise provides stable bias voltage for 320-segment LCD - eliminates need for external charge pump IC. |
| P1.4/PM_UCA1RXD/LCDREF/R13 | Multiplexed UART RX / LCD reference input | Configurable as serial receive or external LCD voltage reference - simplifies design by sharing pin between communication and display subsystems. |
| VDSYS / DVSYS | Digital supply selection node | Externally connects DVCC and AUXVCCx supplies to enable automatic switchover during brownout - critical for seamless transition to backup power. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction for CTs | Compensates phase lag in current transformers in real time using on-chip DSP - eliminates external calibration hardware and improves power factor accuracy. |
| Single calibration across 40–70 Hz line frequency | Validates metrology performance across global grid frequencies (50/60 Hz ±10%) without re-calibration - reduces factory test time and field deployment complexity. |
| Password-protected RTC with temperature compensation | Prevents unauthorized clock tampering and maintains ±2 ppm accuracy over –40°C to +85°C - satisfies anti-tamper requirements in ANSI C12.1 and IEC 62055. |
| Flexible power supply options with auto-switching | Supports primary AC-derived supply, supercapacitor, and coin-cell backup with seamless handover - enables >10-year battery life in LPM3.5 mode. |
| System ADC (10-bit, 200 kSPS) | Monitors internal temperature, supply voltage, and auxiliary sensors - provides self-diagnostic capability for meter health reporting and predictive maintenance. |
Applications
| Smart Electricity Meter | Revenue-Grade Energy Monitor |
|---|---|
|
Use Scenario: Installed in residential/commercial 3-phase 4-wire star-connected meters for kWh billing and demand response. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time energy calculation, tariff switching, secure RTC, and optical/PLC communication. Use Value: Eliminates discrete ADC, MCU, RTC, and LCD driver - reduces BOM cost by ≥30% and PCB area by 40% versus multi-chip solutions. |
Use Scenario: Embedded in industrial submetering panels for load profiling, harmonic analysis, and power quality monitoring. IC Role / Device Role / Timing Role: High-precision measurement engine capturing voltage/current waveforms at 8 kSPS per channel with phase angle resolution ≤0.01°. Use Value: Delivers four-quadrant active/reactive power with <0.5% error up to 2000:1 dynamic range - meets IEC 61000-4-30 Class A compliance. |
| AMI Gateway Node | Grid Edge Sensor |
|
Use Scenario: Integrated into cellular/NB-IoT-enabled AMI gateways aggregating data from multiple downstream meters. IC Role / Device Role / Timing Role: Secure data concentrator with AES-128 encryption, time-synchronized event logging, and dual-port UART for legacy meter interfacing. Use Value: On-chip crypto accelerator and 128KB flash support OTA firmware updates and encrypted firmware signing - satisfies DLMS/COSEM security profiles. |
Use Scenario: Deployed in transformer monitoring units for neutral current imbalance detection and thermal derating prediction. IC Role / Device Role / Timing Role: Low-power sensing node sampling all three phases continuously in LPM3.5 mode with wake-on-event interrupt. Use Value: 1.24 µA RTC-active current enables 5+ year operation on CR2032 - avoids costly site visits for battery replacement in remote locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67621IPNR | 64KB flash, 4KB RAM, same SD24_B ADCs and peripherals - lower memory capacity limits advanced tariff logic and larger communication stacks. | Suitable for basic Class 1.0 meters without complex demand response or multi-tariff scheduling. | Select when BOM cost reduction is prioritized over future firmware scalability and extended feature support. |
| ADuCM3029BBCZ | ARM Cortex-M3 core, 256KB flash, integrated 16-bit SAR ADCs - higher processing throughput but lacks dedicated sigma-delta metrology engine and RTC calibration. | Better for general-purpose industrial controllers requiring mixed-signal acquisition and RTOS support, not revenue-grade metering. | Choose only if migrating to ARM ecosystem and accepting trade-offs in metrology certification effort and analog front-end component count. |
Compared with MSP430F67621IPNR, the MSP430F67641IPNR provides double flash/RAM for complex firmware and enhanced security features; versus ADuCM3029BBCZ, it offers native sigma-delta metrology accuracy and lower system-level power consumption in LPM3.5 - making it the optimal choice for certified 3-phase revenue meters.
Availability
MSP430F67641IPNR is available at Aetrix Electronics and suitable for smart electricity metering, revenue-grade energy monitoring, and AMI gateway applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for utility-certified designs.
Supply support for MSP430F67641IPNR 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 high-reliability microcontrollers for industrial, automotive, and energy infrastructure markets.
The MSP430F676x1 product line was engineered specifically for polyphase electricity metering, integrating metrology-grade ADCs, low-power RTC, LCD drivers, and communication peripherals into a single SoC to reduce system cost and accelerate ANSI/IEC certification.
FAQ
What metrology standards does the MSP430F67641IPNR meet?
The MSP430F67641IPNR meets or exceeds ANSI C12.20 Class 0.5 and IEC 63053 Class 0.5 accuracy requirements for active energy measurement. Its <0.5% error over 2000:1 dynamic range, four-quadrant computation, and digital phase correction for current transformers are validated per these standards. The device also supports IEC 62053-21 and EN 50470-3 compliance when implemented with TI's certified energy measurement software library - a key enabler for global utility approvals of meters built with MSP430F67641IPNR.
Does the MSP430F67641IPNR support RTC operation during main power failure?
Yes, the MSP430F67641IPNR supports continuous RTC operation during AC mains failure via its dedicated AUXVCC3 power supply rail. In LPM3.5 mode, the device draws only 1.24 µA at 3 V while maintaining crystal-based timekeeping with integrated offset and temperature calibration. This ensures accurate timestamping of events, secure log retention, and seamless resumption of metering functions upon power restoration - a critical requirement for ANSI C12.1 and IEC 62055 anti-tamper compliance in revenue meters using MSP430F67641IPNR.
How many analog inputs does the MSP430F67641IPNR support for polyphase measurement?
The MSP430F67641IPNR supports six dedicated analog inputs for polyphase measurement: three differential pairs (SD0P0/SD0N0, SD1P0/SD1N0, SD2P0/SD2N0) for current/voltage sampling across three phases. Each pair connects directly to TI's 24-bit sigma-delta modulators (SD24_B) with programmable gain and internal reference. Additionally, the 10-bit system ADC provides six external channels (A0–A5) for auxiliary sensing - enabling comprehensive metrology and diagnostics in a single MSP430F67641IPNR device.
What LCD configuration does the MSP430F67641IPNR support?
The MSP430F67641IPNR integrates a full-featured LCD controller supporting up to 320 segments with static, 2-, 3-, or 4-mux operation. It provides eight common outputs (COM0–COM7) and 40 segment outputs (S0–S39), plus dedicated pins for LCD charge pump (LCDCAP/R33) and reference voltage (LCDREF). Contrast is adjustable via software-controlled bias generation - eliminating external LCD bias ICs and reducing component count in smart meter displays driven by MSP430F67641IPNR.
Can the MSP430F67641IPNR operate across global line frequencies?
Yes, the MSP430F67641IPNR supports 40 Hz to 70 Hz line frequency range using a single calibration point - covering 50 Hz (Europe, Asia) and 60 Hz (Americas) grids, plus tolerance for frequency deviations during instability. Its adaptive sampling engine and digital phase correction maintain <0.5% energy accuracy across this full range without recalibration, satisfying global utility requirements for interoperable metering systems based on MSP430F67641IPNR.
MSP430F67641IPNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 3x24b Sigma Delta Converter
- Number of I/O:
- 52
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
MSP430F67641IPNR FAQ
1.How can I place an order for MSP430F67641IPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67641IPNR 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 MSP430F67641IPNR reliable?
The price and inventory of MSP430F67641IPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67641IPNR is usually 5 days.
3.What payment methods are accepted for MSP430F67641IPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67641IPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67641IPNR?
MSP430F67641IPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67641IPNR 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 MSP430F67641IPNR?
For technical support, including MSP430F67641IPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67641IPNR requirements.
6.How does Aetrix verify that MSP430F67641IPNR is sourced from the original manufacturer or authorized distributors?
All MSP430F67641IPNR 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 MSP430F67641IPNR meets industry standards.
7.What is the process for return or replacement of MSP430F67641IPNR?
All MSP430F67641IPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67641IPNR, 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 MSP430F67641IPNR part is unused and in its original packaging.
Return procedure for MSP430F67641IPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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