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Texas Instruments MSP430F67451IPEUR
- Part No.:
- MSP430F67451IPEUR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 128-LQFP
- Datasheet:
-
MSP430F67451IPEUR.pdf
- Description:
- IC MCU 16BIT 128KB FLASH 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,129
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Product details
Overview
MSP430F67451IPEUR from Texas Instruments is a polyphase metering SoC designed for 3-phase electronic watt-hour meters, featuring 128KB flash, 16KB RAM, four 24-bit sigma-delta ADCs, and <0.1% energy measurement accuracy over 2000:1 dynamic range. It supports ANSI C12.20 and IEC 62053 compliance, operates from 1.8 V to 3.6 V, and delivers ultra-low-power operation (0.18 µA in LPM4.5) for utility meter backup power resilience.
For engineers reviewing the MSP430F67451IPEUR datasheet, MSP430F67451IPEUR pinout, MSP430F67451IPEUR application, or MSP430F67451IPEUR equivalent, key selection criteria include its 4-channel SD24_B ADC configuration, 128-pin LQFP package with 90 GPIOs, RTC with crystal offset calibration, LCD driver for 320 segments, and integrated anti-tamper security modules for revenue-grade metering.
Technical Context
The MSP430F67451IPEUR integrates a 25-MHz MSP430 CPU with 32-bit hardware multiplier for real-time energy calculations and tariff management. Its analog front end includes four independent 24-bit sigma-delta modulators with differential inputs and programmable gain, plus a system-level 10-bit ADC with six external channels and on-chip temperature/supply sensing.
Digital peripherals include six eUSCI modules configurable as UART, SPI, or I²C; four 16-bit timers with nine capture/compare registers; password-protected RTC with temperature compensation; and LCD controller supporting static or multiplexed displays up to 320 segments - all operating within industrial temperature range (–40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash Memory | 128 KB single-cycle flash enabling full energy measurement firmware, tariff logic, and communication stack storage without external memory. |
| RAM | 16 KB single-cycle RAM for real-time accumulation buffers, calibration coefficients, and transient data handling during mains failure. |
| Sigma-Delta ADCs | Four 24-bit SD24_B converters support simultaneous phase current/voltage sampling across three phases plus neutral with >100 dB SNR. |
| Supply Voltage Range | 1.8 V to 3.6 V enables direct connection to standard meter battery backup rails and simplifies power supply design. |
| Low-Power Modes | LPM4.5 draws only 0.18 µA at 3 V, extending backup runtime during AC mains loss while retaining critical RTC and register state. |
| Package | 128-pin LQFP (PEU) with 90 GPIOs provides dedicated pulse output pins for active/reactive energy calibration and flexible sensor interface routing. |
| Compliance | Meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 accuracy requirements for revenue-grade 3-phase metering applications. |
Pinout & Package
128-pin LQFP (PEU) package, 20 mm × 14 mm body size, with 90 general-purpose I/O pins and dedicated analog/digital power domains (AVCC/AVSS, DVCC/DVSS, VASYS/VDSYS, AUXVCCx).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 | Differential input channel 0 | Accepts shunt or CT-based current signal with programmable gain; enables phase A current measurement with >100 dB rejection of common-mode noise. |
| SD1P0 / SD1N0 | Differential input channel 1 | Supports phase B current sensing; paired with internal reference for ratiometric accuracy unaffected by supply drift. |
| SD2P0 / SD2N0 | Differential input channel 2 | Configured for phase C current; shares same SD24_B module clock and filter settings for synchronized sampling. |
| SD3P0 / SD3N0 | Differential input channel 3 | Used for neutral current or voltage reference; enables four-quadrant cumulative energy calculation per phase. |
| VREF | External reference input | Accepts precision 2.5 V reference for highest ADC linearity; bypasses internal reference to achieve <0.1% error over temperature. |
| PULSE0 / PULSE1 | Dedicated energy pulse outputs | Hardware-generated active/reactive energy pulses with programmable frequency scaling for calibration and HAN interface. |
| COM0–COM7 | LCD segment commons | Drive up to 8 backplane lines for 320-segment LCD; integrated contrast control eliminates external resistor network. |
| RST/NMI/SBWTDIO | Reset and debug interface | Combines cold reset, non-maskable interrupt, and Spy-Bi-Wire debug access on single pin for minimal PCB footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Digital phase correction | Compensates CT-induced phase lag in software using calibrated delay values stored in flash, eliminating external analog compensation networks. |
| Temperature-compensated energy measurement | Uses on-chip temperature sensor and factory-trimmed coefficients to correct gain/offset drift across –40°C to +85°C, maintaining ANSI/IEC accuracy. |
| Password-protected RTC | Prevents unauthorized time manipulation via 128-bit AES-encrypted access; includes crystal offset calibration to maintain ±2 ppm accuracy over life. |
| Anti-tamper detection | Monitors tamper pins (e.g., case open, magnetic field, voltage glitch) and triggers secure erase of calibration and tariff data upon violation. |
| Flexible power supply switching | Automatically transitions between main AC-derived supply and backup battery (AUXVCC3) without software intervention or brownout disruption. |
Applications
| Smart Grid Revenue Meter | Industrial Energy Monitor |
|---|---|
Use Scenario: Installed in 3-phase 4-wire utility meter for residential/commercial billing with remote AMI communication. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time active/reactive energy integration, tariff switching, pulse generation, and secure RTC management. Use Value: Achieves Class 0.2 accuracy per ANSI C12.20 and IEC 62053-22 with single-chip integration, reducing BOM cost and board space versus discrete ADC + MCU solutions. | Use Scenario: Embedded in panel-mounted energy analyzer for manufacturing floor submetering and demand response monitoring. IC Role / Device Role / Timing Role: High-precision measurement engine capturing voltage/current harmonics, power factor, and THD across all three phases with synchronized sampling. Use Value: Four independent 24-bit SD24_B ADCs enable simultaneous acquisition without inter-channel skew, ensuring accurate vector sum calculations for unbalanced loads. |
| Backup-Powered Smart Meter | Multi-Sensor Utility Gateway |
Use Scenario: Used in meters requiring >10-year battery-backed RTC and data retention during extended grid outages. IC Role / Device Role / Timing Role: Ultra-low-power SoC executing LPM3.5 (0.34 µA) and LPM4.5 (0.18 µA) modes while preserving calibration data and timekeeping integrity. Use Value: Eliminates need for external supercapacitor or lithium battery charging circuitry due to sub-µA shutdown current and integrated backup supply switching. | Use Scenario: Core processor in gateway aggregating data from multiple CTs, Rogowski coils, and shunt sensors across distributed assets. IC Role / Device Role / Timing Role: Sensor fusion hub accepting diverse analog inputs (CT, shunt, voltage divider), applying digital gain/phase correction, and formatting data for LoRaWAN or NB-IoT transmission. Use Value: Supports mixed-sensor configurations via configurable SD24_B input mux and programmable gain amplifiers, avoiding custom analog front-end redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67461IPEUR | 256 KB flash, 32 KB RAM, same 4-channel SD24_B ADC and package; higher memory for advanced firmware features. | Preferred where future firmware expansion (e.g., DLMS/COSEM stack, OTA updates) requires additional code/data space. | Select when long-term feature scalability outweighs cost sensitivity and current memory usage is <100 KB. |
| MSP430F67451IPZ | Identical core specs but in 100-pin LQFP (PZ) package with 62 I/Os; smaller footprint and lower pin count. | Suitable for compact meters with reduced sensor count or simplified display requirements (≤200 segments). | Choose for space-constrained designs where 28 fewer GPIOs and absence of COM4–COM7 do not impact functionality. |
Compared with MSP430F67461IPEUR, the MSP430F67451IPEUR offers optimized cost for baseline Class 0.2 metering with sufficient memory for certified firmware, while MSP430F67451IPZ trades I/O count and LCD capacity for board area reduction - both retain identical metrology performance and low-power behavior.
Availability
MSP430F67451IPEUR is available at Aetrix Electronics and suitable for smart grid revenue meters, industrial energy monitors, and backup-powered utility gateways requiring stable component supply, long-lifecycle support, and TI-qualified metrology performance.
Supply support for MSP430F67451IPEUR 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 delivering analog and embedded processing solutions, with leadership in low-power microcontrollers and precision metrology ICs.
The MSP430F674x1 product line is engineered specifically for cost-sensitive, high-accuracy polyphase electricity meters, integrating metrology-grade ADCs, secure real-time clocks, and ultra-low-power operation to minimize system-level bill-of-materials and energy storage requirements.
FAQ
What is the maximum dynamic range supported by the MSP430F67451IPEUR for phase current measurement?
The MSP430F67451IPEUR achieves <0.1% accuracy over a 2000:1 dynamic range for phase current measurement using its four 24-bit sigma-delta ADCs. This performance meets ANSI C12.20 Class 0.2 and IEC 62053-22 Class 0.2 standards under specified operating conditions including 40–70 Hz line frequency and industrial temperature range.
Does the MSP430F67451IPEUR support hardware-accelerated energy calculations?
Yes, the MSP430F67451IPEUR includes a 32-bit hardware multiplier and dedicated DSP-like instructions within its 25-MHz MSP430 CPU core. These accelerate real-time active/reactive energy integration, RMS computation, and four-quadrant power analysis - all executed in firmware using TI's free energy measurement software library.
How many LCD segments can the MSP430F67451IPEUR drive, and what is the required external component count?
The MSP430F67451IPEUR drives up to 320 LCD segments using its integrated LCD_C peripheral with programmable contrast control. No external resistors or capacitors are required for basic operation; only LCDCAP/R33 must be tied to DVSS if unused, and optional external capacitors may be added for enhanced contrast stability.
What communication interfaces are available on the MSP430F67451IPEUR for AMI/AMI module connectivity?
The MSP430F67451IPEUR provides six enhanced USCI (eUSCI) modules configurable as UART, SPI, or I²C interfaces. This supports concurrent connections to PLC, RF (sub-GHz or 2.4 GHz), or wired HAN modules - for example, UART for NB-IoT modem, SPI for secure element, and I²C for environmental sensor hub.
Is the MSP430F67451IPEUR qualified for operation in the industrial temperature range?
Yes, the MSP430F67451IPEUR is rated for continuous operation from –40°C to +85°C ambient temperature. This qualification covers all specified metrology performance, low-power mode currents, and RTC accuracy - validated per JEDEC JESD22-A104 and TI's internal reliability testing protocols.
MSP430F67451IPEUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 128-LQFP
- Series:
- MSP430F6xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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, 4x24b Sigma Delta Converter
- Number of I/O:
- 90
- Program Memory Size:
- 128KB (128K 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:
MSP430F67451IPEUR FAQ
1.How can I place an order for MSP430F67451IPEUR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67451IPEUR 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 MSP430F67451IPEUR reliable?
The price and inventory of MSP430F67451IPEUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67451IPEUR is usually 5 days.
3.What payment methods are accepted for MSP430F67451IPEUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67451IPEUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67451IPEUR?
MSP430F67451IPEUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67451IPEUR 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 MSP430F67451IPEUR?
For technical support, including MSP430F67451IPEUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67451IPEUR requirements.
6.How does Aetrix verify that MSP430F67451IPEUR is sourced from the original manufacturer or authorized distributors?
All MSP430F67451IPEUR 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 MSP430F67451IPEUR meets industry standards.
7.What is the process for return or replacement of MSP430F67451IPEUR?
All MSP430F67451IPEUR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67451IPEUR, 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 MSP430F67451IPEUR part is unused and in its original packaging.
Return procedure for MSP430F67451IPEUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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