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Texas Instruments MSP430F6720IPN
- Part No.:
- MSP430F6720IPN
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430F6720IPN.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,158
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Product details
Overview
MSP430F6720IPN from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller designed for single-phase electronic watt-hour metering. It integrates two 24-bit sigma-delta ADCs, a 10-bit 200-ksps ADC with temperature sensor, LCD driver for up to 320 segments, and three eUSCI_A modules supporting UART/IrDA/SPI plus one eUSCI_B module for I²C/SPI - all in an 80-pin LQFP package.
For engineers reviewing the MSP430F6720IPN datasheet, MSP430F6720IPN pinout, MSP430F6720IPN application, or MSP430F6720IPN equivalent, key selection criteria include its dual SD24_B ADC channel count, 16 KB Flash/1 KB RAM memory configuration, RTC with crystal offset calibration, auxiliary supply subsystem for backup operation, and support for tamper-resistant metering architectures requiring low-power real-time measurement and display.
Technical Context
The MSP430F6720IPN implements a 16-bit RISC CPU with 25-MHz system clock capability, digitally controlled oscillator (DCO), and flexible power management including integrated LDO, supply voltage supervision, and multiple low-power modes (LPM3/LPM3.5/LPM4/LPM4.5). Its unified clock system supports FLL stabilization, VLO/REFO internal sources, and 32-kHz XT1 crystal input.
It features four 16-bit Timer_A modules (one with three capture/compare registers, three with two each), hardware multiplier for 32-bit operations, 3-channel DMA, and dedicated auxiliary supplies (AUXVCC1–AUXVCC3) enabling independent RTC and backup memory operation during main supply interruption - critical for revenue-grade metering compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 25-MHz max system clock and constant generators for optimized code efficiency |
| Flash / RAM | 16 KB Flash (for firmware and calibration data) and 1 KB RAM (for real-time metering variables and stack) |
| ADC System | Two 24-bit sigma-delta ADCs (SD24_B) + one 10-bit 200-ksps ADC with internal reference and temperature sensor |
| Low-Power Modes | LPM3: 1.7 µA @ 2.2 V (RTC active); LPM3.5: 1.24 µA @ 3.0 V (RTC-only); LPM4.5: 0.78 µA @ 3.0 V (full shutdown) |
| Communication | Three eUSCI_A modules (UART/IrDA/SPI) + one eUSCI_B module (I²C/SPI) for metrology interface and host communication |
| LCD Driver | Integrated LCD_C controller supporting up to 320 segments in 8-mux mode with programmable contrast control |
| Package | 80-pin LQFP (PN), 12 mm × 12 mm body size, 52 GPIO pins, compatible with industrial meter PCB layouts |
Pinout & Package
Package: 80-pin LQFP (PN), 12 mm × 12 mm, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 6–7, 11–15, 17–20, 22–25, 27–30, 32–39, 41–44, 46–52, 54–64, 66–80 | GPIO / Secondary Function Multiplexed Pins | Configurable digital I/O or peripheral signals (e.g., TA0.0, UCA0RXD, UCB0SCL, COM0–COM7, S0–S39) |
| 5, 8–10, 16, 21, 26, 31, 45, 47–48, 53, 65, 75–79 | Analog / Power / Clock / Debug | SD0P0/SD0N0 (sigma-delta input pair), AVCC/AVSS (analog supply), XIN/XOUT (32-kHz crystal), RST/NMI/SBWTDIO (JTAG/SBW debug reset) |
| AUXVCC1–AUXVCC3 | Auxiliary Supply Terminals | Independent power rails for RTC, backup memory, and LCD bias - enable operation during main supply failure |
| VDSYS / DVSYS | System Voltage Distribution | Must be externally connected on PCB to ensure proper core and I/O voltage regulation and sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Password-protected RTC with crystal offset calibration | Enables ±1 ppm accuracy over temperature and aging without external trimming components |
| Dual SD24_B sigma-delta ADCs | Supports simultaneous voltage/current measurement in 2-wire single-phase meters with >99.9% accuracy class compliance |
| Integrated LCD driver (8-mux, 320 seg) | Eliminates external display controller; reduces BOM cost and board space in compact meter designs |
| Ultra-low standby current (1.7 µA @ 2.2 V) | Extends battery life in backup-powered meters to >10 years under typical utility conditions |
| Three eUSCI_A + one eUSCI_B interfaces | Enables concurrent IrDA pulse reading, RS-485 communication, and I²C sensor interfacing without external bridges |
| Hardware multiplier & 3-channel DMA | Accelerates real-time energy calculation (e.g., RMS, active/reactive power) while minimizing CPU load and power consumption |
Applications
| 2-Wire Single-Phase Metering | 3-Wire Single-Phase Metering |
|---|---|
Use Scenario: Residential electricity meter measuring active energy consumption via single CT and shunt-based current sensing. IC Role / Device Role / Timing Role: Primary metrology MCU performing simultaneous voltage/current sampling, harmonic analysis, tariff calculation, and LCD display update. Use Value: Dual SD24_B ADCs enable synchronized 24-bit sampling of both channels at 8 kSPS, meeting IEC 62053-21 Class 0.5S requirements without external signal conditioning. | Use Scenario: Commercial single-phase meter with neutral current monitoring for imbalance detection and theft prevention. IC Role / Device Role / Timing Role: Metrology processor managing three independent analog inputs (phase A, phase B, neutral) with precise phase alignment and temperature-compensated gain. Use Value: Integrated temperature sensor and REFO reference allow real-time ADC offset/gain correction, maintaining accuracy across –25°C to +70°C operating range. |
| Tamper-Resistant Meters | Smart Grid Endpoint Node |
Use Scenario: Utility meter detecting magnetic, reverse-current, and cover-removal tampering events in field-deployed units. IC Role / Device Role / Timing Role: Secure metrology controller executing tamper algorithms, logging events to protected flash, and triggering optical pulse or RF alert. Use Value: Password-protected RTC and backup RAM retain tamper timestamps and counters even during main power loss - critical for forensic audit trails. | Use Scenario: Edge node aggregating meter data and communicating via PLC or wireless HAN to concentrator. IC Role / Device Role / Timing Role: Low-power communications hub handling DLMS/COSEM protocol stack, secure boot, and encrypted data transmission. Use Value: eUSCI_B I²C interface connects to secure element; eUSCI_A UART supports PLC modem AT-command control - all within <200 µA active-mode current at 1 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar metrology microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F6721IPN | 32 KB Flash / 2 KB RAM; identical peripherals and pinout | Supports larger firmware (e.g., multi-tariff, advanced diagnostics) without layout change | Select when future firmware expansion or enhanced data logging is required |
| MSP430F6723IPN | 64 KB Flash / 4 KB RAM; same ADC count and package | Enables full DLMS/COSEM stack + OTA updates in resource-constrained designs | Choose for smart meter certification paths requiring embedded security and remote management |
Compared with MSP430F6720IPN, the MSP430F6721IPN and MSP430F6723IPN offer scalable Flash/RAM while retaining identical metrology ADC performance, RTC functionality, and 80-pin LQFP compatibility - allowing incremental design upgrades without PCB revision.
Availability
MSP430F6720IPN is available at Aetrix Electronics and suitable for 2-wire metering, tamper-resistant utility endpoints, and smart grid edge nodes requiring stable component supply, long-term lifecycle assurance, and TI-qualified metrology-grade silicon.
Supply support for MSP430F6720IPN 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 for industrial, automotive, and consumer applications.
The MSP430F672x product line is engineered specifically for revenue-grade electricity metering, integrating metrology-optimized ADCs, RTC, LCD, and ultra-low-power operation to meet IEC 62053 and ANSI C12 standards.
FAQ
What is the maximum system clock frequency supported by the MSP430F6720IPN?
The MSP430F6720IPN supports a maximum system clock frequency of 25 MHz, enabled by its digitally controlled oscillator (DCO) and FLL-based clock stabilization. This allows high-speed execution of metrology algorithms such as RMS calculation and harmonic analysis while maintaining sub-1 µs timer resolution for precise sampling synchronization - essential for accurate energy measurement in the MSP430F6720IPN.
Does the MSP430F6720IPN include hardware support for real-time energy computation?
Yes, the MSP430F6720IPN includes a hardware multiplier capable of 32-bit operations and a 3-channel DMA controller, enabling efficient execution of energy computation routines (e.g., active/reactive power, RMS, fundamental frequency) without CPU intervention. This offloads intensive math from the 16-bit CPU, reducing active-mode current and improving real-time responsiveness in the MSP430F6720IPN.
How many analog input channels does the MSP430F6720IPN support for metrology measurements?
The MSP430F6720IPN supports six external analog input channels via its 10-bit ADC and up to six differential pairs across its two 24-bit SD24_B sigma-delta converters. Specifically, it provides three external SD24_B input pairs (SD0P0/SD0N0, SD1P0/SD1N0, SD2P0/SD2N0 - though SD2P0/SD2N0 are NC on this variant) plus two internal channels (temperature sensor and VREF), totaling five usable metrology inputs in the MSP430F6720IPN.
Is the MSP430F6720IPN pin-compatible with other devices in the MSP430F672x family?
Yes, the MSP430F6720IPN is fully pin-compatible with all other 80-pin LQFP variants in the MSP430F672x family (e.g., MSP430F6721IPN, MSP430F6723IPN), sharing identical pin numbering, electrical characteristics, and peripheral mapping. This enables drop-in firmware and layout reuse across memory- and feature-scaled versions of the MSP430F6720IPN.
What auxiliary supply features does the MSP430F6720IPN provide for backup operation?
The MSP430F6720IPN provides three dedicated auxiliary supply terminals (AUXVCC1, AUXVCC2, AUXVCC3) to independently power the RTC, backup RAM (4 × 16 bits), and LCD bias circuitry. This architecture ensures continuous timekeeping, tamper-event logging, and display retention during main supply interruption - a mandatory requirement for revenue-grade meters certified to IEC 62053-21, and fully implemented in the MSP430F6720IPN.
MSP430F6720IPN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-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, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 5x10b, 2x24b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F6720IPN FAQ
1.How can I place an order for MSP430F6720IPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F6720IPN 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 MSP430F6720IPN reliable?
The price and inventory of MSP430F6720IPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F6720IPN is usually 5 days.
3.What payment methods are accepted for MSP430F6720IPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F6720IPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F6720IPN?
MSP430F6720IPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F6720IPN 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 MSP430F6720IPN?
For technical support, including MSP430F6720IPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F6720IPN requirements.
6.How does Aetrix verify that MSP430F6720IPN is sourced from the original manufacturer or authorized distributors?
All MSP430F6720IPN 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 MSP430F6720IPN meets industry standards.
7.What is the process for return or replacement of MSP430F6720IPN?
All MSP430F6720IPN units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F6720IPN, 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 MSP430F6720IPN part is unused and in its original packaging.
Return procedure for MSP430F6720IPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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