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Texas Instruments MSP430FR68891IPNR
- Part No.:
- MSP430FR68891IPNR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430FR68891IPNR.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,751
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Product details
Overview
MSP430FR68891IPNR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 128KB nonvolatile memory, 2KB RAM, integrated 12-bit ADC (16-channel), LCD driver (up to 320 segments), and real-time clock. It operates from 1.8 V to 3.6 V and supports seven low-power modes-including LPM3.5 (0.35 µA RTC active) and LPM4.5 (0.02 µA shutdown)-targeting battery-powered utility metering and data logging.
For engineers reviewing the MSP430FR68891IPNR datasheet, MSP430FR68891IPNR pinout, MSP430FR68891IPNR application, or MSP430FR68891IPNR equivalent, key selection criteria include FRAM endurance (1015 write cycles), capacitive touch I/O without external components, dual eUSCI modules (UART/IrDA/SPI/I²C), and hardware CRC16/CRC32 for secure firmware integrity in safety-critical metering deployments.
Technical Context
The MSP430FR68891IPNR implements the MSP430 CPUXV2 core with 16 general-purpose registers and executes instructions at up to 16 MHz. Its FRAM architecture enables byte-level writes with no erase cycle, eliminating flash wear-out concerns in frequent data-logging scenarios.
It integrates dual 16-bit Timer_A (TA0/TA1) and dual 16-bit Timer_B (TB0/TB1) peripherals-each with multiple capture/compare registers-and supports simultaneous LCD segment driving and analog sensing via shared I/O pins, enabling compact, single-chip meter designs with minimal external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit MSP430 CPUXV2 with 16 registers; enables deterministic real-time control and low-latency interrupt response in metering firmware. |
| FRAM Size | 128 KB unified memory; allows seamless storage of firmware, calibration data, and time-stamped logs without partitioning or wear leveling. |
| ADC Resolution | 12-bit SAR ADC with internal reference and sample-and-hold; supports up to 16 external inputs for multi-sensor analog acquisition (e.g., flow, temperature, pressure). |
| LCD Driver | Integrated LCD_C module supporting up to 320 segments with contrast control; eliminates external display controller in portable meters and heat cost allocators. |
| Low-Power Modes | LPM3.5 (0.35 µA RTC active) and LPM4.5 (0.02 µA shutdown); extends 10+ year battery life in sealed water/heat meters with periodic wake-up and data transmission. |
| Communication Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0/B1 (I²C/SPI); enables dual-interface connectivity-for example, UART to metrology sensor and I²C to EEPROM or security IC. |
| Capacitive Touch | All P1–P10 and PJ pins support CTSIO without external components; enables tamper-proof keypad and button interfaces in utility meter front panels. |
Pinout & Package
Package: LQFP-80 (12 mm × 12 mm), RoHS-compliant, lead-free, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O / TA0/TA1 / UCB0 / LCD seg | Multi-function pins supporting timer capture, I²C slave interface, and LCD segment drive-enables shared pin usage across analog, timing, and display subsystems. |
| P2.0–P2.7 | General-purpose I/O / UCA0 / TB0 / COMx / LCD seg | Drive LCD backplane (COM0–COM7) and support UART/SPI while providing capacitive touch input-critical for compact meter UI integration. |
| P3.0–P3.7 | General-purpose I/O / UCB1 / UCA1 / TB0 / LCD seg | Support dual SPI masters (UCB1 + UCA1) and Timer_B channels simultaneously-enables concurrent sensor readout and display refresh. |
| P5.0–P5.7 | General-purpose I/O / TA1 / UCB1 / LCD seg | Provide MCLK/SMCLK/ACLK outputs and TA1 capture inputs-facilitates precise timekeeping synchronization with external crystal or RTC calibration signals. |
| P6.0–P6.7 | General-purpose I/O / LCD REF/Vx / COMx / TA0 | Configure LCD bias voltages (V1–V5), drive COM lines, and route TA0 clock-enables full static/2–8-mux LCD control without external charge pumps. |
| PJ.0–PJ.7 | JTAG/Spy-Bi-Wire / HFXIN/HFXOUT / LFXIN/LFXOUT | Dedicated high-frequency (HFXT) and low-frequency (LFXT) crystal connections plus debug interface-ensures accurate 32.768 kHz RTC and stable 4–24 MHz system clock. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128 KB nonvolatile memory with 1015 write endurance and 125 ns word write speed-eliminates flash erase delays and wear-out in daily log updates. |
| Hardware CRC Engine | CRC16 (CCITT) and CRC32 (ISO-3309) accelerators-offloads checksum computation from CPU during firmware OTA updates and data packet validation. |
| Integrated LCD Controller | Drives up to 320 segments with programmable contrast and internal voltage generation-reduces BOM count by removing external LCD bias ICs and resistors. |
| Ultra-Low-Power RTC | Real-time clock with calendar, alarm, and LPM3.5 operation at 0.35 µA-maintains accurate timekeeping during 10-year battery life in sealed meters. |
| Capacitive Touch I/O | All GPIO pins (P1–P10, PJ) support CTSIO with no external components-enables robust, low-cost user interface on meter housings without overlay sensors. |
| 32-Bit Hardware Multiplier | MPY32 unit performs signed/unsigned multiply in one cycle-accelerates metrology calculations (e.g., energy integration, tariff switching) without software overhead. |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
|
Use Scenario: Ultrasonic or mechanical flow measurement with hourly consumption logging and RF transmission every 24 hours. IC Role / Device Role / Timing Role: Primary MCU managing sensor interface, FRAM-based data storage, RTC-triggered wake-up, and sub-GHz transceiver control. Use Value: 0.02 µA LPM4.5 shutdown current and 1015-cycle FRAM enable >10-year maintenance-free operation with daily log writes. |
Use Scenario: Apartment-level thermal energy distribution monitoring using temperature differentials and flow rate sampling over 30-minute intervals. IC Role / Device Role / Timing Role: Integrated metrology engine performing ADC sampling, energy calculation, LCD display update, and IR pulse output for billing interface. Use Value: Unified FRAM stores firmware, calibration tables, and 365-day consumption history-no external EEPROM required. |
| Portable Medical Logging | Smart Utility Data Logger |
|
Use Scenario: Battery-powered blood glucose or ECG device recording timestamped measurements and transmitting via BLE when docked. IC Role / Device Role / Timing Role: Sensor hub with analog front-end, RTC timestamping, secure FRAM storage, and USB/UART bootloader interface. Use Value: Capacitive touch I/O enables intuitive buttonless UI; FRAM write speed ensures no data loss during rapid sampling bursts. |
Use Scenario: Industrial site data logger capturing environmental sensor readings (temp/humidity/pressure) and uploading via cellular modem every 15 minutes. IC Role / Device Role / Timing Role: Central controller coordinating multi-sensor polling, CRC-protected data packaging, and modem handshaking via eUSCI_A1 UART. Use Value: Dual eUSCI modules allow concurrent sensor communication (I²C) and modem control (UART), maximizing uptime and reducing firmware complexity. |
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 |
|---|---|---|---|
| MSP430FR6879IPN | Same FRAM size (128 KB), identical peripherals, but UART-based BSL instead of I²C BSL; shares same 80-pin LQFP package. | Preferred where UART programming interface is standardized across production lines or field service tools. | Select MSP430FR6879IPN if UART-based bootloader access is required; otherwise, MSP430FR68891IPNR offers I²C BSL for space-constrained boards with existing I²C infrastructure. |
| MSP430FR6889IPZ | Identical feature set and FRAM/RAM specs, but in 100-pin LQFP (14 mm × 14 mm) package with 17 additional I/O pins and extended LCD segment count. | Suitable for larger displays (>320 segments) or designs requiring extra GPIO for expansion interfaces (e.g., SD card, additional sensors). | Choose MSP430FR6889IPZ only if the design requires more than 63 GPIO or >320-segment LCD support; MSP430FR68891IPNR optimizes board area and cost for standard metering layouts. |
Compared with MSP430FR6879IPN and MSP430FR6889IPZ, the MSP430FR68891IPNR uniquely combines I²C bootloader capability, 80-pin footprint efficiency, and full 320-segment LCD support-making it the optimal choice for compact, production-ready utility meters requiring secure, field-upgradable firmware and minimal external components.
Availability
MSP430FR68891IPNR is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical logging requiring stable component supply, long-term lifecycle assurance, and TI-qualified industrial-grade reliability.
Supply support for MSP430FR68891IPNR 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 digital signal technologies with over 50 years of innovation in low-power microcontrollers.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as utility metering and portable instrumentation, combining ferroelectric memory with holistic ultra-low-power architecture to extend battery life without sacrificing performance or data integrity.
FAQ
What is the maximum operating frequency of the MSP430FR68891IPNR?
The MSP430FR68891IPNR supports a maximum system clock frequency of 16 MHz using the factory-trimmed DCO or external HFXT crystal. This enables real-time execution of metrology algorithms and fast FRAM writes while maintaining ultra-low power consumption in active mode (≈100 µA/MHz).
Does the MSP430FR68891IPNR support hardware encryption?
No, the MSP430FR68891IPNR does not include dedicated AES or SHA hardware accelerators. It relies on software-based cryptographic libraries for secure boot or data encryption. For hardware encryption, consider TI's MSP430FR5994 or later secure MCUs with integrated AES-128 modules.
What LCD multiplexing configurations does the MSP430FR68891IPNR support?
The MSP430FR68891IPNR's LCD_C module supports static, 2-mux, 3-mux, 4-mux, and 8-mux configurations, enabling drive of up to 320 segments. The 80-pin LQFP package supports up to 240 segments in 8-mux mode or 320 segments in static mode-ideal for high-resolution utility meter displays.
Is the MSP430FR68891IPNR pin-compatible with other MSP430FR68xx devices?
Yes, the MSP430FR68891IPNR is pin-compatible with MSP430FR6879IPN and MSP430FR6889IPN in the 80-pin LQFP package. All share identical pin mapping, power domains, and peripheral signal routing-allowing drop-in replacement for UART vs. I²C BSL variants without PCB changes.
What is the minimum supply voltage for RTC operation in LPM3.5 mode?
The MSP430FR68891IPNR maintains RTC functionality in LPM3.5 mode down to 1.8 V, provided the SVS threshold is configured accordingly. At 1.8 V, typical RTC current is 0.35 µA-enabling reliable timekeeping throughout the full battery discharge curve in lithium-thionyl chloride cells.
MSP430FR68891IPNR 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, 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:
MSP430FR68891IPNR FAQ
1.How can I place an order for MSP430FR68891IPNR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR68891IPNR 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 MSP430FR68891IPNR reliable?
The price and inventory of MSP430FR68891IPNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR68891IPNR is usually 5 days.
3.What payment methods are accepted for MSP430FR68891IPNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR68891IPNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR68891IPNR?
MSP430FR68891IPNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR68891IPNR 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 MSP430FR68891IPNR?
For technical support, including MSP430FR68891IPNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR68891IPNR requirements.
6.How does Aetrix verify that MSP430FR68891IPNR is sourced from the original manufacturer or authorized distributors?
All MSP430FR68891IPNR 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 MSP430FR68891IPNR meets industry standards.
7.What is the process for return or replacement of MSP430FR68891IPNR?
All MSP430FR68891IPNR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR68891IPNR, 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 MSP430FR68891IPNR part is unused and in its original packaging.
Return procedure for MSP430FR68891IPNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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