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Texas Instruments MSP430F67641AIPZR
- Part No.:
- MSP430F67641AIPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67641AIPZR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,541
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Product details
Overview
MSP430F67641AIPZR from Texas Instruments is a polyphase metering SoC designed for revenue-grade three-phase energy measurement. It integrates a 25-MHz MSP430 CPU, three 24-bit sigma-delta ADCs (0.5% accuracy over 2000:1 dynamic range), RTC with AUXVCC3 power domain, LCD controller (320 segments), and four communication interfaces - all in a 100-pin LQFP package rated for –40°C to 85°C industrial operation.
For engineers reviewing the MSP430F67641AIPZR datasheet, MSP430F67641AIPZR pinout, MSP430F67641AIPZR application, or MSP430F67641AIPZR equivalent, key selection criteria include ANSI C12.20/IEC 63053 compliance, ultra-low standby current (2.5 µA in LPM3), 128KB flash + 8KB RAM execution capability, and support for CT/Rogowski/shunt sensor inputs in three-phase 4-wire star configurations.
Technical Context
The MSP430F67641AIPZR implements a dedicated metering signal chain with three independent SD24_B modulators feeding configurable digital filters, enabling simultaneous per-phase active/reactive/apparent energy calculation and four-quadrant power measurement. Its real-time clock operates from a separate AUXVCC3 supply with integrated temperature compensation and crystal offset calibration.
Power management includes five low-power modes (LPM3/LPM3.5/LPM4.5), automatic supply switching between main and backup rails, and LCD operation at 3 µA during AC mains failure. The device executes TI's certified energy measurement software library directly from flash, eliminating external co-processors for ANSI/IEC-compliant metrology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core CPU | 25-MHz MSP430 with 32-bit hardware multiplier for real-time energy calculations |
| Flash / RAM | 128KB flash (single-cycle execution) + 8KB RAM (single-cycle access) for full meter firmware storage and runtime variables |
| ADC System | Three 24-bit sigma-delta ADCs (SD24_B) with differential inputs, variable gain, and <0.5% error over 2000:1 dynamic range |
| Power Supply Range | 1.8 V to 3.6 V DVCC; auxiliary supplies AVCC, AUXVCC1–3, VASYS, VDSYS for isolated analog/RTC domains |
| Low-Power Modes | LPM3: 2.5 µA @ 3 V (3 µs wake-up); LPM3.5 (RTC): 1.24 µA; LPM4.5 (shutdown): 0.78 µA |
| Communication Interfaces | Four eUSCI modules configurable as UART/SPI/I²C - three UART-capable, one I²C-capable, supporting AMR/AMI module integration |
| Package | 100-pin LQFP (PZ), 14 mm × 14 mm, 72 GPIOs, industrial temperature range (–40°C to 85°C) |
Pinout & Package
100-pin LQFP (PZ) package with 14 mm × 14 mm body size, exposed thermal pad not present, RoHS-compliant lead finish, and industrial-grade moisture sensitivity level (MSL-3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–6 (SD0P0–SD2N0) | Differential analog inputs for sigma-delta modulators | Accept phase current/voltage signals from CTs, Rogowski coils, or shunts; referenced to AVSS/AVCC |
| 7 (VREF) | Analog reference input | External precision reference for ADC conversion; supports internal buffer and calibration |
| 11–13 (P9.1–P9.3) | Analog input channels A5–A3 | Additional voltage sensing inputs for neutral or auxiliary measurements |
| 24–25 (XIN/XOUT) | 32.768-kHz crystal oscillator terminals | Drive RTC module with temperature-compensated crystal; require external load capacitors |
| 26 (AUXVCC3) | Dedicated RTC power supply | Enables continuous RTC operation during main power loss; powers crystal oscillator and RTC registers |
| 32–35, 36–39 (COM0–COM7) | LCD segment commons | Support up to 320-segment LCD display with contrast control; driven from DVCC domain |
| 95–100 (TEST–RST/NMI) | JTAG/SBW debug and reset | Enable programming, boundary-scan testing, and system reset; SBWTDIO supports 4-wire Spy-Bi-Wire interface |
Key Features
| Feature | Design Value |
|---|---|
| Revenue-grade metrology | Meets ANSI C12.20 Class 0.2 and IEC 63053 requirements with on-chip calibration and digital phase correction |
| Multi-sensor flexibility | Hardware support for current transformers, Rogowski coils, and shunt resistors without external signal conditioning |
| Line frequency adaptability | Accurate 40–70 Hz measurement using single-point calibration across utility grid variations |
| Backup power resilience | LCD remains functional at 3 µA during AC failure; RTC retains time/date with <1 ppm drift via AUXVCC3 |
| Secure real-time clock | Password-protected RTC with factory-trimmed crystal offset and temperature compensation stored in TLV memory |
| Integrated development enablement | Pre-certified energy measurement software library included at no cost; compatible with MSP-FET and EVM430-F67641 |
Applications
| Smart Electricity Meter | Utility Grid Monitoring |
|---|---|
|
Use Scenario: Three-phase 4-wire star-connected revenue meter installed at residential/commercial service entrance. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time per-phase kWh/kVARh accumulation, tariff switching, and secure data logging. Use Value: Eliminates external DSP or ASIC; achieves Class 0.2 accuracy with <2.5 µA standby current for extended battery backup life. |
Use Scenario: Substation-level energy quality analyzer capturing harmonics, flicker, and voltage sags across multiple feeders. IC Role / Device Role / Timing Role: High-precision sampling engine synchronizing ADC conversions to line zero-crossings via TACLK input. Use Value: Simultaneous 24-bit sampling of IA/IB/IC/VA/VB/VC enables IEEE 1459-compliant power vector analysis. |
| Industrial Energy Management | AMI Gateway Interface |
|
Use Scenario: Factory-floor submetering node aggregating motor drive, HVAC, and lighting loads for demand response reporting. IC Role / Device Role / Timing Role: Local computation unit calculating cumulative four-quadrant energy and exporting via UART to PLC or gateway. Use Value: On-device tariff management and tamper detection reduce cloud processing latency and bandwidth usage. |
Use Scenario: Two-way communication bridge between metering SoC and RF mesh network (e.g., Wi-SUN, PRIME). IC Role / Device Role / Timing Role: Protocol translation layer handling DLMS/COSEM framing over UART while managing secure key exchange. Use Value: Dual UART + SPI interfaces allow concurrent AMI radio control and firmware update channel without host MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67621AIPZR | 64KB flash, 4KB RAM, identical ADC/peripheral set and pinout | Suitable for cost-sensitive meters with reduced firmware complexity or smaller BOM | Select when full 128KB flash is unnecessary; shares same PCB layout and software migration path |
| AD7403-8BSTZ | Isolated 16-bit sigma-delta modulator only - no CPU, flash, or peripherals | Requires external MCU and isolation components for complete meter design | Choose for designs needing reinforced isolation or where TI's integrated SoC architecture is not preferred |
Compared with MSP430F67621AIPZR, the MSP430F67641AIPZR provides double flash/RAM for advanced tariff logic and firmware updates; versus AD7403-8BSTZ, it delivers full turnkey metrology with calibrated software stack and no external processor dependency.
Availability
MSP430F67641AIPZR is available at Aetrix Electronics and suitable for smart electricity metering, utility grid monitoring, and industrial energy management requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ANSI/IEC-certified production.
Supply support for MSP430F67641AIPZR 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The MSP430F676x1A family targets revenue-grade polyphase metering, integrating metrology ADCs, RTC, LCD, and communications into a single ultra-low-power SoC to reduce system cost and accelerate certification.
FAQ
What is the primary metrology accuracy specification of the MSP430F67641AIPZR?
The MSP430F67641AIPZR achieves better than 0.5% error over a 2000:1 dynamic range for phase current measurement, meeting ANSI C12.20 Class 0.2 and IEC 63053 standards. This accuracy is enabled by its three 24-bit sigma-delta ADCs with digital phase correction, on-chip calibration, and temperature-compensated RTC - all verified under standard test conditions in the official SLASE50A datasheet.
Does the MSP430F67641AIPZR support external crystal oscillators for the real-time clock?
Yes, the MSP430F67641AIPZR supports a 32.768-kHz external crystal connected to pins XIN (pin 24) and XOUT (pin 25). The RTC module operates from the dedicated AUXVCC3 supply and includes integrated crystal offset calibration and temperature compensation, ensuring <1 ppm timing stability across –40°C to 85°C - a feature confirmed in Section 1.1 and Table 4-1 of the SLASE50A datasheet.
How many communication interfaces does the MSP430F67641AIPZR provide, and how are they configured?
The MSP430F67641AIPZR provides four eUSCI modules: three configurable as UART/SPI and one as SPI/I²C. Default pin assignments include UCA0/UCA1/UCA2 (UART-capable) and UCB0 (I²C-capable), with multiplexing supported on ports P1–P3. This configuration enables simultaneous connection to AMI radios, optical ports, and external sensors - as detailed in Table 3-1 and Section 4.4 of the SLASE50A datasheet.
What low-power modes are available on the MSP430F67641AIPZR, and what are their typical currents?
The MSP430F67641AIPZR offers five low-power modes: LPM3 draws 2.5 µA at 3 V (3 µs wake-up), LPM3.5 (RTC active) draws 1.24 µA, and LPM4.5 (full shutdown) draws 0.78 µA - all measured excluding external circuitry. These values are specified in Section 5.5 of the SLASE50A datasheet and enable >10-year battery life in backup-powered meters.
Is the MSP430F67641AIPZR pin-compatible with other devices in the MSP430F676x1A family?
Yes, the MSP430F67641AIPZR in the 100-pin PZ package shares identical pinout and footprint with MSP430F67621AIPZR and MSP430F67661AIPZR. All family members use the same signal mapping, power domain assignments, and peripheral routing - confirmed in Table 3-1 and Figures 4-1/4-2 of the SLASE50A datasheet, enabling hardware reuse across performance tiers.
MSP430F67641AIPZR 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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT, 3x24b Sigma Delta Converter
- Number of I/O:
- 72
- 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:
MSP430F67641AIPZR FAQ
1.How can I place an order for MSP430F67641AIPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67641AIPZR 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 MSP430F67641AIPZR reliable?
The price and inventory of MSP430F67641AIPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67641AIPZR is usually 5 days.
3.What payment methods are accepted for MSP430F67641AIPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67641AIPZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67641AIPZR?
MSP430F67641AIPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67641AIPZR 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 MSP430F67641AIPZR?
For technical support, including MSP430F67641AIPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67641AIPZR requirements.
6.How does Aetrix verify that MSP430F67641AIPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F67641AIPZR 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 MSP430F67641AIPZR meets industry standards.
7.What is the process for return or replacement of MSP430F67641AIPZR?
All MSP430F67641AIPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67641AIPZR, 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 MSP430F67641AIPZR part is unused and in its original packaging.
Return procedure for MSP430F67641AIPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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