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Texas Instruments MSP430F67661IPZ
- Part No.:
- MSP430F67661IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67661IPZ.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:179
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Product details
Overview
MSP430F67661IPZ from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring six 24-bit sigma-delta ADCs, 256KB flash, 16KB RAM, and support for ANSI C12.20/IEC 62053 compliance with <0.1% accuracy over 2000:1 dynamic range.
For engineers reviewing the MSP430F67661IPZ datasheet, MSP430F67661IPZ pinout, MSP430F67661IPZ application, or MSP430F67661IPZ equivalent, key selection considerations include its 100-pin LQFP (PZ) package, six SD24_B converters, RTC with crystal offset calibration, LCD driver for up to 320 segments, and ultra-low-power operation in LPM3 (2.1 µA) and LPM4.5 (0.18 µA).
Technical Context
The MSP430F67661IPZ integrates a 25-MHz MSP430 CPU with 32-bit hardware multiplier for real-time energy calculations, and employs TI's dedicated 24-bit sigma-delta modulator architecture with differential inputs and programmable gain for high-precision current/voltage sampling across three phases plus neutral.
It supports flexible power supply management-including automatic switching between main and backup supplies-and includes a password-protected RTC with temperature compensation, anti-tamper security modules, and six enhanced eUSCI ports configurable as UART, SPI, or I²C for AMR/AMI communication in smart meter deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 256 KB single-cycle flash enabling full firmware storage for tariff management, metrology algorithms, and communication stacks. |
| RAM | 16 KB single-cycle RAM supporting real-time data buffering, calibration tables, and multi-rate energy accumulation. |
| Sigma-Delta ADCs | Six independent 24-bit SD24_B converters with differential inputs-optimized for simultaneous phase A/B/C and neutral current sensing using shunts or CTs. |
| Power Supply Range | 1.8 V to 3.6 V operation enables direct interface with common meter auxiliary supplies and battery-backed operation during mains failure. |
| Low-Power Modes | LPM3: 2.1 µA at 3 V (RTC active); LPM3.5: 0.34 µA; LPM4.5: 0.18 µA-enabling >10-year battery life in standby metering. |
| LCD Driver | Supports up to 320 segments with contrast control-eliminates external display controller in cost-sensitive utility meter designs. |
| Communication Interfaces | Six eUSCI modules configurable as four UARTs, six SPIs, or two I²C interfaces-supports dual-port HPLC + optical port or RF+PLC coexistence. |
Pinout & Package
The MSP430F67661IPZ is housed in a 100-pin LQFP (PZ) package measuring 14 mm × 14 mm, with 62 general-purpose I/O pins, dedicated sigma-delta analog inputs (SDxP/N), RTC capacitor pins (RTCCAP0/1), and multiple power domains (AVCC, DVCC, AUXVCC1–3, VASYS/VDYSYS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XIN / XOUT | Low-frequency crystal oscillator input/output | Connects to 32.768-kHz tuning-fork crystal for precision RTC timing with ±5 ppm stability over –40°C to 85°C. |
| RTCCAP0 / RTCCAP1 | RTC oscillator load capacitors | External 12.5-pF capacitors required for crystal biasing; enables temperature-compensated RTC calibration per TI SLAS815D. |
| SD0P0 / SD0N0 through SD6P0 / SD6N0 | Differential sigma-delta analog inputs | Six fully differential SD24_B channel pairs-SD0–SD5 used for phase A/B/C current/voltage; SD6 reserved or unused in F67661 variant. |
| VREF | Reference voltage input | Accepts external 2.5-V reference for highest ADC accuracy; internal reference also available at 1.5 V or 2.0 V. |
| P1.0 / P1.1 | Analog inputs (VeREF− / VeREF+) | Configurable as external reference inputs or ADC channels-used for system-level voltage monitoring and reference validation. |
| COM0–COM7 | LCD segment commons | Eight common outputs driving multiplexed LCD glass; paired with S0–S39 segment pins to support up to 320-segment displays. |
Key Features
| Feature | Design Value |
|---|---|
| Four-quadrant energy measurement | Enables bidirectional power flow tracking (import/export) per phase-required for net-metering and distributed generation compliance. |
| Digital phase correction | Compensates CT-induced phase shift in real time-maintains <0.1° phase angle error across 40–70 Hz line frequencies without hardware calibration. |
| Password-protected RTC | Prevents unauthorized clock manipulation or time-based tampering-meets ANSI C12.22 and IEC 62056-21 security requirements. |
| Pulse output pins | Dedicated active/reactive energy pulse outputs (e.g., PULSE_A, PULSE_R) enable direct connection to mechanical test meters or LED indicators for field verification. |
| Temperature-compensated metrology | On-chip temperature sensor feeds real-time corrections to energy registers-reduces drift to <±0.02%/°C over industrial temperature range. |
Applications
| Smart 3-Phase Revenue Meter | Industrial Energy Monitor |
|---|---|
Use Scenario: Installed in utility substations or commercial building main panels to measure kWh/kVARh for billing and demand response. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time RMS, fundamental, and harmonic power calculations with timestamped data logging. Use Value: Meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.5S accuracy without external calibration components-reducing BOM cost by ≥30%. | Use Scenario: Embedded in factory-floor power quality analyzers monitoring motor-driven loads across three phases. IC Role / Device Role / Timing Role: Simultaneous sampling of six current/voltage channels at 8 kSPS with synchronized 24-bit resolution per channel. Use Value: Enables detection of sub-cycle harmonics (up to 50th) and unbalance events with <100-µs timestamp resolution-critical for predictive maintenance. |
| AMI Gateway Node | Backup-Powered Smart Meter |
Use Scenario: Integrated into cellular or RF mesh gateway devices aggregating consumption data from multiple endpoints. IC Role / Device Role / Timing Role: Host processor managing secure TLS/DTLS stack while offloading metrology to dedicated SD24_B subsystem. Use Value: Six eUSCI ports allow concurrent HPLC (via UART), NB-IoT modem (SPI), and optical port (UART)-eliminating external bridge ICs. | Use Scenario: Used in meters requiring >10-year battery life during AC mains outage for critical data retention and tamper logging. IC Role / Device Role / Timing Role: Ultra-low-power SoC operating in LPM4.5 (0.18 µA) while maintaining RTC, backup RAM, and tamper-detect circuitry. Use Value: Retains 72 hours of interval data and cryptographic keys on supercapacitor backup-exceeds DLMS/COSEM Class 1000 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67661IPZT | Tape-and-reel packaging variant; identical electrical specs, timing, and pinout. | No functional difference-intended for automated SMT assembly vs. tray-packaged IPZ. | Select IPZT for high-volume production lines requiring reel-fed placement. |
| MSP430F67671IPZ | 256KB flash + 32KB RAM (vs. 16KB); same SD24_B count, peripherals, and package. | Enables larger firmware images for dual-protocol stacks (e.g., DLMS + OSGP) or extended waveform capture buffers. | Choose F67671IPZ when additional RAM is needed for advanced analytics or future firmware expansion. |
Compared with MSP430F67661IPZ, the IPZT offers identical metrology performance in tape format for volume manufacturing, while the F67671IPZ adds 16KB RAM for complex communication stacks-neither provides extra SD24_B channels or higher flash density than the base F67661IPZ.
Availability
MSP430F67661IPZ is available at Aetrix Electronics and suitable for smart meter design, utility-grade energy monitoring, and industrial power quality analyzers requiring stable component supply and long-term lifecycle support.
Supply support for MSP430F67661IPZ 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 delivering analog, embedded processing, and connectivity solutions with emphasis on low-power innovation and industrial reliability.
The MSP430F67661IPZ belongs to TI's polyphase metering SoC product line, engineered specifically for revenue-grade electricity measurement in 3-phase 4-wire star-connected meters compliant with ANSI and IEC standards.
FAQ
What is the maximum number of independent 24-bit sigma-delta ADC channels supported by the MSP430F67661IPZ?
The MSP430F67661IPZ supports six independent 24-bit sigma-delta ADCs (SD24_B modules), each with differential inputs and programmable gain. These are designated SD0 through SD5 in the device documentation and are used for simultaneous sampling of phase A/B/C currents and voltages plus neutral current-fully meeting three-phase four-wire metering requirements without external ADCs.
Does the MSP430F67661IPZ include an integrated LCD controller, and what is its segment capacity?
Yes, the MSP430F67661IPZ includes an integrated LCD_C peripheral supporting up to 320 segments. It provides programmable contrast control, static/multiplexed drive modes (up to 1/8 duty), and direct interface to glass LCDs-eliminating the need for external display drivers in utility meter designs where visual indication is required.
What low-power modes are available on the MSP430F67661IPZ, and what is the current draw in RTC-active standby mode?
The MSP430F67661IPZ offers multiple low-power modes including LPM3 (RTC active), LPM3.5 (RTC + backup RAM only), and LPM4.5 (shut-down with tamper detect). In LPM3 at 3 V, it draws 2.1 µA-enabling >10-year battery life in backup-powered meters while retaining accurate timekeeping and wake-up capability in under 5 µs.
Which communication interfaces are configurable on the MSP430F67661IPZ, and how many can operate simultaneously?
The MSP430F67661IPZ features six enhanced USCI (eUSCI) modules-four eUSCI_A and two eUSCI_B-that can be independently configured as UART, SPI, or I²C. All six can operate concurrently, enabling simultaneous HPLC, optical port, RF modem, and PLC communication-critical for AMI gateways and multi-interface smart meters.
Is the MSP430F67661IPZ qualified for industrial temperature operation, and what is its specified range?
Yes, the MSP430F67661IPZ is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all key metrology parameters-including sigma-delta ADC accuracy, RTC stability, and flash retention-ensuring reliable performance in outdoor meter enclosures and harsh industrial environments.
MSP430F67661IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tray
- 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, 6x24b Sigma Delta Converter
- Number of I/O:
- 62
- 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:
MSP430F67661IPZ FAQ
1.How can I place an order for MSP430F67661IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67661IPZ 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 MSP430F67661IPZ reliable?
The price and inventory of MSP430F67661IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67661IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F67661IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67661IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67661IPZ?
MSP430F67661IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67661IPZ 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 MSP430F67661IPZ?
For technical support, including MSP430F67661IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67661IPZ requirements.
6.How does Aetrix verify that MSP430F67661IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F67661IPZ 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 MSP430F67661IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F67661IPZ?
All MSP430F67661IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67661IPZ, 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 MSP430F67661IPZ part is unused and in its original packaging.
Return procedure for MSP430F67661IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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