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Texas Instruments MSP430FR69891IPN
- Part No.:
- MSP430FR69891IPN
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430FR69891IPN.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,497
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Product details
Overview
MSP430FR69891IPN from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 128KB ferroelectric RAM (FRAM), 2KB SRAM, integrated LCD driver (up to 320 segments), extended scan interface (ESI) for metering, and hardware AES-256 encryption. It operates from 1.8 V to 3.6 V and delivers 100 µA/MHz active current, enabling multi-year battery life in water/heat meters and portable medical loggers.
For engineers reviewing the MSP430FR69891IPN datasheet, MSP430FR69891IPN pinout, MSP430FR69891IPN application, or MSP430FR69891IPN equivalent, key selection considerations include FRAM endurance (1015 writes), RTC with calendar mode (0.35 µA LPM3.5), ESI-based background sensing, and I2C bootloader support - all in an 80-pin LQFP package.
Technical Context
The MSP430FR69891IPN 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 automatic calibration and multiple source selection per module.
Peripherals are memory-mapped and power-gated: three eUSCI modules (two UART/IrDA/SPI + two I2C/SPI), dual 16-bit Timer_A (3+5 CC registers) and Timer_B (2+5 CC registers), 12-bit ADC12_B with 16 external inputs, and ESI supporting capacitive sensing without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16-MHz operation - enables deterministic real-time control with minimal code footprint. |
| Nonvolatile Memory | 128KB FRAM with 1015 write cycles - eliminates flash wear-out concerns in frequent-data-logging applications. |
| Power Consumption | 0.35 µA in RTC-active LPM3.5 mode - supports decade-scale battery life in utility metering with calendar-aware wakeups. |
| ADC Resolution | 12-bit ADC12_B with internal reference and sample-and-hold - delivers ±1 LSB INL for precision sensor digitization. |
| ESI Channels | Extended Scan Interface with 16-channel analog front-end - enables simultaneous background capacitance measurement for fluid/gas volume sensing. |
| LCD Drive Capability | Integrated LCD_C controller driving up to 320 segments at static/2–8 mux - reduces BOM by eliminating external display drivers. |
| Crypto Engine | Hardware AES-256 coprocessor with true random number seed - accelerates secure firmware updates and data encryption without CPU overhead. |
Pinout & Package
Package: 80-pin LQFP (PN), 12 mm × 12 mm body size, 0.5 mm pitch, thermally enhanced with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O with capacitive touch, ADC, timer, USCI | Supports simultaneous touch sensing, analog input (A0–A3), and SPI/I2C slave functions - simplifies front-panel HMI integration. |
| P2.0–P2.7 | USCI_A0 TX/RX/CLK/STE, TB0 COM outputs, DMAE0 | UART/IrDA/SPI primary interface + LCD common driver outputs (COM0–COM7) - enables direct connection to segmented displays. |
| P3.0–P3.7 | USCI_B1 CLK/SIMI/SOMI/STE, TA1, TB0 | Dual-role I2C/SPI peripheral bus with timer capture capability - supports sensor hub communication and pulse-width timing. |
| P5.0–P5.7 | TA1, UCA1, RTCCLK, MCLK, ACLK | Secondary timer and serial interface domain with independent clock routing - isolates time-critical functions from main I/O domain. |
| P9.0–P9.7 | ESI channel inputs (ESICH0–ESICH3), ESI control (ESICI/ESICOM) | Dedicated ESI analog front-end pins with programmable gain and filtering - enables high-accuracy, low-noise capacitance-to-digital conversion. |
| PJ.0–PJ.5 | JTAG/SBW debug, HFXIN/HFXOUT, LFXIN/LFXOUT | Full SWD-compatible debug interface + dual crystal oscillator support (HFXT/LFXT) - ensures robust clocking and field-programmable diagnostics. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128KB unified memory space with 125 ns word write speed - enables atomic logging, zero-wear firmware updates, and instant nonvolatile state save on power loss. |
| Extended Scan Interface (ESI) | Background-capable 16-channel capacitance measurement engine - performs continuous fluid level, heat flow, or gas concentration sensing without CPU intervention. |
| Ultra-Low-Power RTC | Calendar-mode RTC consuming 0.35 µA in LPM3.5 - provides accurate timestamping and alarm-triggered wakeups for periodic metering tasks. |
| Hardware AES-256 | Dedicated crypto coprocessor with DMA-assisted throughput - secures sensor data and OTA updates while preserving CPU bandwidth for real-time control. |
| Integrated LCD Driver | 320-segment drive with contrast control and charge pump - eliminates external bias generators and reduces display subsystem component count by ≥4. |
| Capacitive Touch I/O | All P1–P10 and PJ pins support CSD without external components - enables cost-effective, robust touch buttons and sliders on meter housings. |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
|
Use Scenario: Ultrasonic or mechanical flow measurement with hourly consumption logging and tamper detection. IC Role / Device Role / Timing Role: Primary MCU managing ESI-based flow transducer excitation, FRAM-based data storage, and RTC-scheduled transmission. Use Value: 1015-cycle FRAM ensures >20 years of daily log writes; LPM3.5 RTC enables precise interval wakeups without external timers. |
Use Scenario: Apartment-level thermal energy allocation using temperature differential and flow rate sampling. IC Role / Device Role / Timing Role: Sensor fusion node aggregating RTD/thermistor readings and pulse-counted flow data with encrypted local storage. Use Value: Integrated 12-bit ADC12_B with internal reference eliminates external precision references; AES-256 protects billing data integrity. |
| Portable Medical Logging | Industrial Data Logger |
|
Use Scenario: Battery-powered glucose monitor or spirometer capturing analog waveforms and timestamps. IC Role / Device Role / Timing Role: Signal acquisition controller with ESI for capacitive breath detection, FRAM for waveform buffering, and LCD for real-time display. Use Value: ESI performs background capacitance sensing during sleep; 320-segment LCD_C drives custom graphical UI without external controllers. |
Use Scenario: Remote environmental sensor node logging temperature, humidity, and vibration over months on coin cell. IC Role / Device Role / Timing Role: Low-power host managing multiple I2C sensors, performing CRC32 integrity checks, and storing data in FRAM before wireless upload. Use Value: 0.02 µA LPM4.5 shutdown current extends shelf life; hardware CRC32 offloads checksum computation from CPU. |
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 |
|---|---|---|---|
| MSP430FR6989IPN | Same FRAM size (128KB), identical peripherals, but UART BSL instead of I2C BSL; shares same 80-pin LQFP package. | Preferred where UART-based field firmware updates or legacy toolchain compatibility is required. | Select when UART bootloader access is mandatory and I2C BSL is not needed. |
| MSP430FR59891IPM | 64-pin LQFP, no LCD_C or ESI; retains 128KB FRAM, AES-256, and RTC, but only 48 I/O pins and no display support. | Suitable for compact sensor nodes without display or advanced metrology requirements. | Choose for space-constrained designs omitting LCD and ESI, prioritizing minimal footprint over metrology features. |
Compared with MSP430FR69891IPN, the MSP430FR6989IPN offers identical metrology capabilities but requires UART-based programming infrastructure, while the MSP430FR59891IPM sacrifices ESI and LCD to reduce size and cost - making MSP430FR69891IPN optimal for full-featured utility meters requiring I2C BSL security and display integration.
Availability
MSP430FR69891IPN is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical logging requiring stable component supply across long-lifecycle industrial programs.
Supply support for MSP430FR69891IPN 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and system integration.
The MSP430 ULP FRAM portfolio targets battery-operated sensing and measurement applications, combining FRAM endurance, sub-µA low-power modes, and metrology-optimized peripherals like ESI and LCD_C.
FAQ
What distinguishes MSP430FR69891IPN from MSP430FR6989IPN?
The MSP430FR69891IPN features an I2C-based hardware bootloader (BSL), whereas the MSP430FR6989IPN uses a UART-based BSL. Both share identical FRAM (128KB), ESI, LCD_C, and 80-pin LQFP packaging. The I2C BSL in MSP430FR69891IPN enables secure, two-wire firmware updates compatible with existing I2C infrastructure and reduces pin count requirements versus UART.
Does MSP430FR69891IPN support real-time clock functionality with calendar mode?
Yes, the MSP430FR69891IPN integrates RTC_C with full calendar mode (year/month/day/hour/minute/second), alarm interrupts, and battery-backed operation. In LPM3.5 mode, it consumes only 0.35 µA typical, enabling decade-scale timestamping in battery-powered meters without external RTC ICs.
Can MSP430FR69891IPN drive a 320-segment LCD directly?
Yes, the MSP430FR69891IPN includes the LCD_C peripheral capable of driving up to 320 segments in static, 2-, 3-, or 4-mux configurations. It provides integrated charge pump, contrast control, and software-configurable bias - eliminating external LCD bias generators and reducing bill-of-materials cost.
What is the role of the Extended Scan Interface (ESI) in MSP430FR69891IPN?
The ESI in MSP430FR69891IPN is a dedicated analog front-end for capacitive sensing, supporting up to 16 input channels with programmable gain, filtering, and background scanning. It enables continuous, CPU-free measurement of fluid levels, heat flow, or gas concentration - critical for ultrasonic water meters and thermal allocators.
How does the FRAM memory in MSP430FR69891IPN improve reliability over flash-based MCUs?
MSP430FR69891IPN's 128KB FRAM offers 1015 write cycles and 125 ns write speed - 1010× more durable and 1000× faster than typical flash. This eliminates wear leveling, enables atomic writes for data logging, and guarantees nonvolatile state retention during brownouts - essential for utility meter data integrity.
MSP430FR69891IPN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- MSP430™ FRAM
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, 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:
MSP430FR69891IPN FAQ
1.How can I place an order for MSP430FR69891IPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR69891IPN 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 MSP430FR69891IPN reliable?
The price and inventory of MSP430FR69891IPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR69891IPN is usually 5 days.
3.What payment methods are accepted for MSP430FR69891IPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR69891IPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR69891IPN?
MSP430FR69891IPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR69891IPN 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 MSP430FR69891IPN?
For technical support, including MSP430FR69891IPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR69891IPN requirements.
6.How does Aetrix verify that MSP430FR69891IPN is sourced from the original manufacturer or authorized distributors?
All MSP430FR69891IPN 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 MSP430FR69891IPN meets industry standards.
7.What is the process for return or replacement of MSP430FR69891IPN?
All MSP430FR69891IPN units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR69891IPN, 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 MSP430FR69891IPN part is unused and in its original packaging.
Return procedure for MSP430FR69891IPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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