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Texas Instruments MSP430FR6979IPNR
- Part No.:
- MSP430FR6979IPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430FR6979IPNR.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,135
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Product details
Overview
MSP430FR6979IPNR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128KB ferroelectric RAM (FRAM), 2KB SRAM, integrated LCD driver supporting up to 320 segments, 12-bit ADC with 16 external inputs, and dual eUSCI modules supporting UART, IrDA, SPI, and I²C. It operates from 1.8 V to 3.6 V and targets battery-powered metering applications requiring long-term data retention and real-time clock functionality.
For engineers reviewing the MSP430FR6979IPNR datasheet, MSP430FR6979IPNR pinout, MSP430FR6979IPNR application, or MSP430FR6979IPNR equivalent, key selection criteria include FRAM endurance (10¹⁵ write cycles), LPM3.5 RTC current (0.35 µA typical), 80-pin LQFP package compatibility, and hardware AES-256 encryption for secure firmware updates in utility metering systems.
Technical Context
The MSP430FR6979IPNR implements the ULP CPUXV2 core with seven low-power modes, including LPM3.5 (RTC active) and LPM4.5 (shutdown at 0.02 µA). Its clock system integrates DCO, LFXT (32 kHz crystal), and HFXT (up to 16 MHz), with dedicated HFXIN/HFXOUT pins enabled-unlike the FR692x series. The device supports capacitive touch on all I/O ports without external components.
Peripherals include three 16-bit Timer_A modules (TA0–TA3), one 16-bit Timer_B (TB0) with seven capture/compare registers, 32-bit hardware multiplier, three-channel DMA, CRC16/CRC32 engines, and dual eUSCI_A (UART/IrDA/SPI) and eUSCI_B (I²C/SPI) interfaces. The integrated LCD_C module drives static or multiplexed displays up to 8×40 segments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2 running up to 16 MHz; enables deterministic real-time control with low gate count and minimal power overhead. |
| Nonvolatile Memory | 128KB FRAM with 10¹⁵ write endurance and 125 ns/word write speed; eliminates flash wear-out concerns in frequent logging applications. |
| Supply Voltage Range | 1.8 V to 3.6 V; supports direct connection to standard coin-cell or two-cell alkaline batteries without external regulators. |
| LPM3.5 Current | 0.35 µA typical with RTC active; enables multi-year operation on CR2032 in water/heat meters with calendar-aware wakeups. |
| ADC Resolution | 12-bit SAR ADC with internal reference and sample-and-hold; delivers ±1 LSB INL for precision sensor signal acquisition (e.g., flow transducers). |
| LCD Drive Capacity | Up to 320 segments with contrast control; supports full-feature digital display in portable medical meters without external glass drivers. |
| Security Engine | Hardware AES-256 coprocessor with true random number seed; accelerates encrypted BSL updates and secure boot verification. |
Pinout & Package
The MSP430FR6979IPNR is housed in an 80-pin LQFP (PN) package measuring 12 mm × 12 mm with exposed thermal pad (not electrically connected). Pin assignments follow TI's standardized MSP430FR697x pinout, supporting full peripheral access including dual eUSCI, LCD, RTC, and capacitive touch across P1–P10 and PJ ports.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O with capacitive touch, ADC, timer, USCI | Supports simultaneous analog sensing (VREF±), UART (UCA0), I²C (UCB0), and touch input-no external RC network required. |
| P6.0–P6.6 | LCD voltage rail outputs (R23, R13, R03) and COM0–COM3 | Direct drive of LCD backplane and bias voltages; eliminates need for external charge pumps or resistor ladders. |
| PJ.4/PJ.5 | LFXIN/LFXOUT | Connects to 32.768 kHz crystal for RTC accuracy; internal load capacitance optimized for 3.7 pF crystal per datasheet. |
| PJ.6/PJ.7 | HFXIN/HFXOUT | Supports high-frequency crystal up to 16 MHz for precise timing in communication or sampling-critical functions. |
| RST/NMI/SBWTDIO | Reset, non-maskable interrupt, Spy-Bi-Wire debug I/O | Single-pin 2-wire debug interface enables in-system programming and real-time trace without JTAG header space. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128KB unified memory enabling atomic writes, instant nonvolatility, and elimination of erase cycles during firmware updates or data logging. |
| Ultra-Low-Power RTC | 0.35 µA operation in LPM3.5 with calendar and alarm-enables time-triggered wakeups every second or hour with sub-second accuracy. |
| Capacitive Touch I/O | All 80 pins support CSD (capacitive sensing) without external components; reduces BOM cost and PCB area in meter front-panel interfaces. |
| Hardware CRC32 Engine | Dedicated ISO-3309 compliant CRC32 accelerator offloads checksum computation from CPU-critical for secure OTA firmware validation. |
| Integrated LCD Driver | Configurable for static, 2–8 mux displays up to 320 segments; includes programmable contrast and internal charge pump for single-supply operation. |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
Use Scenario: Battery-powered ultrasonic or mechanical water meter recording flow pulses and temperature every 15 minutes for 10+ years. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based log storage, and driving LCD display with RTC-synchronized timestamps. Use Value: 128KB FRAM retains 10 years of hourly consumption data without wear degradation; LPM3.5 current ensures CR2032 battery life exceeds 12 years. | Use Scenario: Wall-mounted heat cost allocator measuring radiator surface temperature and flow time in residential heating systems. IC Role / Device Role / Timing Role: Sensor hub aggregating thermistor readings, calculating energy share via EN 834-3, and storing billing data with tamper-proof timestamps. Use Value: Hardware AES-256 encrypts stored consumption records; integrated LCD displays real-time cost allocation without external display controller. |
| Portable Medical Meter | Data Logger |
Use Scenario: Handheld blood glucose or oxygen saturation meter with Bluetooth LE interface and rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Signal acquisition front-end (12-bit ADC), secure data storage (FRAM), and BLE co-processor interface via eUSCI_A0 UART. Use Value: Fast FRAM writes capture rapid sensor sequences without latency; 2KB SRAM buffers ADC samples during BLE transmission bursts. | Use Scenario: Industrial environmental logger recording temperature, humidity, and pressure every minute using external sensors over I²C. IC Role / Device Role / Timing Role: Autonomous data aggregator with RTC-triggered sampling, error-checked FRAM storage, and USB/UART upload capability. Use Value: CRC32 engine validates each log entry before FRAM write; dual eUSCI_B modules enable concurrent sensor polling and host communication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power FRAM microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR6977IPNR | 64KB FRAM (vs. 128KB), identical peripherals, same 80-pin LQFP package and pinout. | Suitable for simpler metering designs with lower data logging depth or smaller firmware footprint. | Select when application requires ≤64KB nonvolatile storage and cost optimization is prioritized over future firmware scalability. |
| MSP430FR6928IPM | 96KB FRAM, no HFXIN/HFXOUT pins, 64-pin LQFP, reduced I/O count (52 vs. 63), no LCD segment drive beyond 116 seg. | Targeted at compact, cost-sensitive utility meters without high-resolution display or high-speed crystal timing needs. | Choose for space-constrained designs where HF crystal support and full 320-segment LCD are unnecessary. |
Compared with MSP430FR6977IPNR and MSP430FR6928IPM, the MSP430FR6979IPNR provides maximum FRAM capacity and full HFXT support in the same 80-pin footprint-making it optimal for next-generation meters requiring secure OTA updates, extended logging history, and high-accuracy timekeeping.
Availability
MSP430FR6979IPNR is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical metering applications requiring stable component supply, long-term lifecycle assurance, and TI-authorized traceability.
Supply support for MSP430FR6979IPNR 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 consumer markets since 1930.
The MSP430FR69xx product line was designed specifically for ultra-low-power metering and sensing applications-integrating FRAM, RTC, LCD, and security features into a single chip to eliminate external memory, display controllers, and crypto accelerators.
FAQ
What is the maximum operating frequency of the MSP430FR6979IPNR?
The MSP430FR6979IPNR supports a maximum system clock frequency of 16 MHz via its factory-trimmed DCO or external HFXT oscillator. This allows real-time execution of metrology algorithms and high-speed FRAM writes (125 ns/word) while maintaining ultra-low-power operation in active mode (≈100 µA/MHz).
Does the MSP430FR6979IPNR support hardware encryption?
Yes, the MSP430FR6979IPNR includes a dedicated hardware AES-256 encryption and decryption coprocessor with true random number seed generation. This enables secure firmware updates, encrypted data storage in FRAM, and authentication protocols without burdening the CPU-critical for utility-grade meter security compliance.
How many LCD segments can the MSP430FR6979IPNR drive?
The MSP430FR6979IPNR integrates the LCD_C module capable of driving up to 320 segments in static, 2-, 3-, 4-, 6-, or 8-mux configurations. It includes internal charge pump, programmable contrast control, and software-configurable bias generation-eliminating external LCD bias ICs in designs like heat cost allocators.
What is the RTC current consumption of the MSP430FR6979IPNR in LPM3.5 mode?
In LPM3.5 mode with RTC active and calendar function enabled, the MSP430FR6979IPNR consumes 0.35 µA typical (as specified in SLAS797C Rev. August 2018). This ultra-low current enables decade-long operation on a single CR2032 coin cell in water or gas meter applications with daily timestamped logging.
Is the MSP430FR6979IPNR pin-compatible with other MSP430FR69xx devices?
Yes-the MSP430FR6979IPNR shares identical pinout and package (80-pin LQFP, PN) with MSP430FR6977IPNR and MSP430FR69791IPNR. This enables drop-in replacement for design reuse, firmware portability, and simplified BOM consolidation across metering platforms with varying FRAM size or bootloader interface requirements.
MSP430FR6979IPNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 63
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR6979IPNR FAQ
1.How can I place an order for MSP430FR6979IPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR6979IPNR 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 MSP430FR6979IPNR reliable?
The price and inventory of MSP430FR6979IPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR6979IPNR is usually 5 days.
3.What payment methods are accepted for MSP430FR6979IPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR6979IPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR6979IPNR?
MSP430FR6979IPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR6979IPNR 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 MSP430FR6979IPNR?
For technical support, including MSP430FR6979IPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR6979IPNR requirements.
6.How does Aetrix verify that MSP430FR6979IPNR is sourced from the original manufacturer or authorized distributors?
All MSP430FR6979IPNR 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 MSP430FR6979IPNR meets industry standards.
7.What is the process for return or replacement of MSP430FR6979IPNR?
All MSP430FR6979IPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR6979IPNR, 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 MSP430FR6979IPNR part is unused and in its original packaging.
Return procedure for MSP430FR6979IPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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