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Texas Instruments MSP430F67621IPZ
- Part No.:
- MSP430F67621IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F67621IPZ.pdf
- Description:
- IC MCU 16BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,387
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Product details
Overview
MSP430F67621IPZ from Texas Instruments is a polyphase metering SoC designed for revenue-grade 3-phase electricity meters, featuring three independent 24-bit sigma-delta ADCs (±0.5% accuracy over 2000:1 dynamic range), 64KB flash/4KB RAM, 100-pin LQFP package with 72 GPIOs, and real-time clock with dedicated AUXVCC3 supply for backup operation during AC mains failure.
For engineers reviewing the MSP430F67621IPZ datasheet, MSP430F67621IPZ pinout, MSP430F67621IPZ application, or MSP430F67621IPZ equivalent, this page delivers verified technical context, validated pin functions, confirmed metrology-grade specifications, and field-proven alternative options for ANSI C12.20/IEC 63053-compliant smart meter designs.
Technical Context
The MSP430F67621IPZ integrates TI's 24-bit SD24_B sigma-delta modulators with differential inputs and programmable gain for simultaneous phase current/voltage sampling across three phases, coupled with a 25-MHz MSP430 CPU and 32-bit hardware multiplier to execute TI's energy measurement software library in real time. Its analog subsystem supports CT, Rogowski, and shunt sensors with digital phase correction and four-quadrant power calculation per phase.
It implements four eUSCI modules configurable as UART/SPI/I²C interfaces for AMR/AMI communication, an LCD controller driving up to 320 segments at ultra-low power (3 µA in LPM3), and dual power domains (AVCC/DVCC + AUXVCC1/2/3) enabling RTC operation and display retention during main supply loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Flash / RAM | 64 KB flash (single-cycle execution), 4 KB RAM (single-cycle access) - enables full ANSI/IEC metrology firmware plus tariff management and communication stacks without external memory. |
| ADC Resolution | Three independent 24-bit sigma-delta ADCs - provides <0.5% error over 2000:1 dynamic range for revenue-grade active/reactive energy measurement per phase. |
| Power Supply Range | 1.8 V to 3.6 V - supports flexible system-level power architecture including battery-backed auxiliary rails (AUXVCC3 for RTC). |
| Low-Power Modes | LPM3: 2.5 µA @ 3 V; LPM3.5 (RTC): 1.24 µA @ 3 V; LPM4.5 (shutdown): 0.78 µA @ 3 V - ensures >10-year battery life in backup operation. |
| Communication Interfaces | Four eUSCI ports: configurable as 3× UART, 3× SPI, 1× I²C - meets AMI module integration requirements with hardware-level protocol flexibility. |
| LCD Support | Up to 320 segments with contrast control - eliminates need for external LCD driver IC in utility meter front-panel displays. |
| Package & I/O | 100-pin LQFP (PZ), 14 mm × 14 mm, 72 GPIOs - provides sufficient routing for multi-sensor analog inputs, isolation interfaces, and display signals in compact meter PCBs. |
Pinout & Package
100-pin LQFP (PZ) package, 14 mm × 14 mm body size, industrial temperature range (–40°C to +85°C). Pin functions validated per TI SLAS998A datasheet Section 4.2 (PZ package signal descriptions).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SD0P0 / SD0N0 SD1P0 / SD1N0 SD2P0 / SD2N0 |
24-bit sigma-delta ADC channel inputs (3 channels) | Differential analog inputs for phase A/B/C current sensing - support CT, Rogowski, or shunt configurations with programmable gain and digital phase correction. |
| VREF / AVCC / AVSS | Analog reference and supply rails | External reference voltage input (VREF), analog power (AVCC), and analog ground (AVSS) - enable high-precision metrology with low-noise analog domain separation. |
| AUXVCC3 | Dedicated RTC/LCD backup supply | Independent auxiliary rail powering RTC and LCD in LPM3.5 mode - retains timekeeping and display during AC mains failure with 1.24 µA quiescent current. |
| P1.4 / P1.5 / LCDCAP | LCD reference and capacitor interface | External LCD voltage reference (LCDREF), segment drive outputs, and LCDCAP connection - configure regulated LCD bias for up to 320 segments without external charge pump. |
| eUSCI_A0/A1/A2, eUSCI_B0 | Configurable serial interfaces | Four hardware UART/SPI/I²C ports - support simultaneous PLC, RF, and optical communication modules in AMI deployments. |
Key Features
| Feature | Design Value |
|---|---|
| ANSI C12.20 & IEC 63053 compliance | Fully validated metrology engine meeting Class 0.5 accuracy requirements - eliminates need for external calibration hardware or post-processing compensation. |
| Digital phase correction | Real-time software-adjustable phase angle compensation for current transformers - corrects inherent CT phase lag without analog circuitry or manual trim. |
| Single calibration across 40–70 Hz | Line frequency agnostic energy calculation - supports global grid standards (50/60 Hz) with one factory calibration, reducing test time and cost. |
| Ultra-low-power RTC + LCD | 1.24 µA RTC operation (LPM3.5) + 3 µA LCD refresh (LPM3) - extends backup battery life beyond 10 years while maintaining time/date and display visibility. |
| Integrated energy measurement library | TI-provided, royalty-free firmware library executing on-device - computes kWh, kVARh, kVAh, demand, harmonics, and power quality metrics without host processor dependency. |
Applications
| 3-Phase Electronic Watt-Hour Meter | Revenue Meter for Utility Grid Monitoring |
|---|---|
Use Scenario: Installed in residential/commercial 3-phase 4-wire star-connected service entrances to measure active/reactive energy consumption for billing. IC Role / Device Role / Timing Role: Primary metrology SoC performing real-time sampling, energy accumulation, tariff switching, and secure data logging. Use Value: Delivers Class 0.5 accuracy per ANSI C12.20 using only internal 24-bit ADCs and TI's certified energy library - reduces BOM count by eliminating external metrology ICs and calibration components. |
Use Scenario: Embedded in utility-owned distribution-level meters monitoring feeder load, voltage sag/swell, and harmonic distortion across substations. IC Role / Device Role / Timing Role: System-on-chip handling precision measurement, time-synchronized event logging (via RTC), and secure DLMS/COSEM-compliant data transmission. Use Value: Enables 10+ year field deployment with battery-backed RTC and LCD - maintains time-stamped fault records and power quality data during extended outages. |
| Smart Grid AMI Endpoint | Energy Monitoring for Industrial Submeters |
Use Scenario: Integrated into RF/PLC-based AMI endpoints communicating hourly consumption data to head-end systems via mesh networks. IC Role / Device Role / Timing Role: Dual-role device: metrology engine + communication controller managing UART/SPI links to RF transceivers and encryption co-processors. Use Value: Four configurable eUSCI ports allow concurrent PLC PHY interface, secure element communication, and optical port diagnostics - simplifies multi-interface gateway design. |
Use Scenario: Deployed in factory-floor submeters tracking energy use per production line, HVAC zone, or machinery group for demand-side management. IC Role / Device Role / Timing Role: High-accuracy energy accumulator with four-quadrant measurement supporting net import/export calculations for solar-integrated loads. Use Value: Simultaneous three-phase measurement with exact phase angle resolution enables precise reactive power control - improves facility power factor without external instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar polyphase metering SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F67641IPZ | 128 KB flash, 8 KB RAM, identical peripheral set and metrology engine - higher memory capacity for advanced firmware features (e.g., waveform capture, enhanced security). | Suitable for next-generation meters requiring OTA updates, extended data logging, or multi-tariff cryptographic signing. | Select when future-proofing firmware scalability is required; shares same pinout and software compatibility. |
| AD7403-8BSTZ | Isolated 16-bit sigma-delta modulator (not SoC) - requires external MCU, lacks RTC, LCD, and communication peripherals. | Used in hybrid meter architectures where isolation is prioritized over integration; needs companion processor for energy calculation. | Choose only when galvanic isolation of current sensing is mandatory and system-level integration is handled externally. |
Compared with MSP430F67641IPZ, the MSP430F67621IPZ trades flash/RAM capacity for lower cost and power in fixed-function meters, while AD7403-8BSTZ shifts complexity to external processing - making MSP430F67621IPZ optimal for integrated, certification-ready, single-chip meter designs.
Availability
MSP430F67621IPZ is available at Aetrix Electronics and suitable for 3-phase electronic watt-hour meters, utility grid monitoring systems, and smart grid AMI endpoints requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for global certification programs.
Supply support for MSP430F67621IPZ 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 connectivity technologies, with decades of leadership in precision metrology and low-power microcontrollers.
The MSP430F676x1 product line was engineered specifically for revenue-grade polyphase electricity meters, integrating metrology-grade ADCs, real-time computation, and communication peripherals into a single ultra-low-power SoC to reduce system cost and accelerate ANSI/IEC certification.
FAQ
What metrology standards does the MSP430F67621IPZ meet?
The MSP430F67621IPZ meets or exceeds ANSI C12.20 and IEC 63053 Class 0.5 accuracy requirements for active and reactive energy measurement. Its 24-bit sigma-delta ADCs achieve <0.5% error over a 2000:1 dynamic range, validated across temperature and line frequency (40–70 Hz), and supports digital phase correction for current transformers - all essential for revenue-grade meter certification.
Does the MSP430F67621IPZ support battery-backed real-time clock operation?
Yes, the MSP430F67621IPZ includes a dedicated RTC module powered by AUXVCC3, enabling continuous timekeeping in LPM3.5 mode at 1.24 µA typical current draw. This allows the device to retain accurate time/date and support time-stamped event logging during AC mains failure - critical for outage reporting and demand measurement in utility applications.
How many analog inputs does the MSP430F67621IPZ support for 3-phase metering?
The MSP430F67621IPZ supports six dedicated differential analog inputs via its three 24-bit sigma-delta ADC channels (SD0P0/SD0N0, SD1P0/SD1N0, SD2P0/SD2N0), enabling simultaneous sampling of phase A/B/C voltage and current. It also includes a 10-bit ADC with six external channels plus internal temperature/supply monitoring - providing full sensor coverage for 3-phase 4-wire meter topologies.
What communication interfaces are available on the MSP430F67621IPZ?
The MSP430F67621IPZ integrates four eUSCI modules: three configurable as UART or SPI (eUSCI_A0/A1/A2), and one configurable as SPI or I²C (eUSCI_B0). This enables concurrent connections to RF/PLC communication modules, secure elements, optical ports, and diagnostic interfaces - supporting full DLMS/COSEM stack implementation without external bridge ICs.
Is the MSP430F67621IPZ pin-compatible with other devices in the F676x1 family?
Yes, the MSP430F67621IPZ in the 100-pin LQFP (PZ) package is pin-compatible with the MSP430F67641IPZ, sharing identical pinout, peripheral mapping, and power domain assignments. Firmware and hardware designs can be reused across both variants, with differentiation limited to flash (64 KB vs. 128 KB) and RAM (4 KB vs. 8 KB) capacity - enabling scalable meter development.
MSP430F67621IPZ 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, 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K 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:
MSP430F67621IPZ FAQ
1.How can I place an order for MSP430F67621IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F67621IPZ 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 MSP430F67621IPZ reliable?
The price and inventory of MSP430F67621IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F67621IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F67621IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F67621IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F67621IPZ?
MSP430F67621IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F67621IPZ 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 MSP430F67621IPZ?
For technical support, including MSP430F67621IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F67621IPZ requirements.
6.How does Aetrix verify that MSP430F67621IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F67621IPZ 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 MSP430F67621IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F67621IPZ?
All MSP430F67621IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F67621IPZ, 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 MSP430F67621IPZ part is unused and in its original packaging.
Return procedure for MSP430F67621IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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