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Texas Instruments MSP430FR68891IPZ
- Part No.:
- MSP430FR68891IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430FR68891IPZ.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,221
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Product details
Overview
MSP430FR68891IPZ from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 128KB nonvolatile FRAM, 2KB RAM, 12-bit ADC with 16 external channels, integrated LCD driver for up to 320 segments, and real-time clock with calendar. It operates from 1.8 V to 3.6 V and targets battery-powered metering applications requiring long-term data retention and low active/standby current.
For engineers reviewing the MSP430FR68891IPZ datasheet, MSP430FR68891IPZ pinout, MSP430FR68891IPZ application, or MSP430FR68891IPZ equivalent, key selection criteria include FRAM endurance (1015 write cycles), LPM3.5 RTC current (0.35 µA typical), 100-pin LQFP package compatibility, and dual eUSCI_A/eUSCI_B peripherals supporting UART/IrDA/SPI/I²C.
Technical Context
The MSP430FR68891IPZ implements the MSP430 CPUXV2 core with 16 registers and integrates a flexible clock system including DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT support. Its power architecture delivers seven low-power modes optimized for energy-constrained deployments.
Peripherals include three 16-bit Timer_A modules (TA0–TA3), two Timer_B modules (TB0–TB1), 32-bit hardware multiplier, three-channel DMA, CRC16/CRC32 engines, and capacitive touch I/O on all ports P1–P10 and PJ without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit MSP430 CPUXV2 with 16 general-purpose registers; enables deterministic real-time control and low-code-footprint firmware. |
| Nonvolatile Memory | 128KB FRAM with 1015 write endurance and 125 ns/word write speed; eliminates flash wear-out concerns in frequent logging scenarios. |
| ADC | 12-bit SAR ADC with internal reference, sample-and-hold, and up to 16 external input channels; supports precision sensor interfacing in metering. |
| Low-Power Modes | LPM3.5 (RTC active): 0.35 µA typical; LPM4.5 (shutdown): 0.02 µA typical - extends battery life to >10 years in water/heat meters. |
| LCD Driver | Integrated LCD_C module supporting static and 2–8 multiplex configurations up to 320 segments; reduces BOM by eliminating external display controllers. |
| Communication | Dual eUSCI_A (UART/IrDA/SPI) and dual eUSCI_B (I²C/SPI); enables simultaneous host communication and sensor bus management. |
| Package | 100-pin LQFP (14 mm × 14 mm); provides full I/O access including 83 GPIOs, dedicated LCD COM/SEG pins, and crystal oscillator connections. |
Pinout & Package
Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, standard JEDEC footprint with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O / TA0/TA1 / UCB0 / LCD segment | Multi-function port supporting timer capture/compare, SPI/I²C, and LCD drive; enables compact meter front-panel integration. |
| P6.0–P6.6 | LCD common outputs (COM0–COM3) / TB0 / analog voltage references | Dedicated LCD backplane drivers with programmable bias voltages; simplifies high-contrast segment display design. |
| PJ.4/PJ.5 | LFXIN / LFXOUT | 32-kHz crystal oscillator interface for RTC accuracy ±20 ppm; critical for time-of-use billing in utility meters. |
| PJ.6/PJ.7 | HFXIN / HFXOUT | High-frequency crystal interface (up to 24 MHz); supports precise timing for ADC sampling and communication baud rates. |
| RST/NMI/SBWTDIO | Reset / NMI input / Spy-Bi-Wire debug I/O | Single-pin JTAG-compatible debug interface; allows in-system programming and low-pin-count field firmware updates. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128KB unified memory space with SRAM-like write speed (125 ns/word) and flash-like nonvolatility - enables robust data logging without wear leveling. |
| Ultra-Low-Power Operation | 0.35 µA in LPM3.5 (RTC + RAM retention) and 0.02 µA in LPM4.5 - supports 10+ year battery life in sealed utility meter enclosures. |
| Integrated LCD Controller | Drives up to 320 segments with contrast control and static/2–8 mux support - eliminates external LCD driver IC and reduces PCB area. |
| Capacitive Touch I/O | All P1–P10 and PJ pins support CSD without external components - enables cost-effective, tamper-resistant keypad interfaces. |
| Dual eUSCI Peripherals | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0/B1 (I²C/SPI) - permits concurrent AMR communication (e.g., RF + optical) and sensor bus management. |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
Use Scenario: Ultrasonic or mechanical flow measurement with hourly consumption logging and pulse output for remote reading. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based log storage, driving LCD display, and handling optical/RF communication via eUSCI. Use Value: 128KB FRAM retains 10+ years of hourly logs at 1 kB/day; LPM3.5 RTC ensures accurate time-stamping without external oscillator. |
Use Scenario: Thermal energy distribution monitoring in multi-dwelling buildings using temperature differential and flow rate inputs. IC Role / Device Role / Timing Role: Sensor fusion hub aggregating PT100/NTC readings, computing kWh-equivalent units, and updating LCD with real-time cost allocation. Use Value: Integrated 12-bit ADC with internal reference achieves <±0.5% measurement accuracy; capacitive touch enables sealed front-panel UI. |
| Portable Medical Meters | Data Logging Systems |
Use Scenario: Battery-powered blood glucose or oxygen saturation analyzers requiring clinical-grade accuracy and audit-trail storage. IC Role / Device Role / Timing Role: Secure data acquisition node with CRC32 integrity checking, encrypted FRAM storage, and USB/Bluetooth interface via UART/I²C bridge. Use Value: 1015 FRAM write cycles ensure lifetime reliability for patient record logging; SVS brownout protection prevents corrupted measurements. |
Use Scenario: Environmental monitoring (temperature/humidity/pressure) in industrial facilities with periodic wireless upload and local display. IC Role / Device Role / Timing Role: Autonomous sensor concentrator performing scheduled ADC reads, timestamping with RTC, storing in FRAM, and waking radios on interval. Use Value: Unified FRAM eliminates separate program/data/storage partitions - simplifies firmware development and reduces code size by ~30% vs flash-based MCUs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR6879IPZ | Same FRAM size (128KB), identical 100-pin LQFP package, but UART-based BSL instead of I²C BSL; lacks P1.6/P1.7 BSL pins. | Preferred where UART-based firmware updates dominate; no change required for existing UART bootloader infrastructure. | Select when legacy UART BSL compatibility is mandatory and I²C BSL is unused. |
| MSP430FR6889IPZ | Identical feature set and pinout; differs only in device marking and ordering code - functionally interchangeable per TI documentation. | No functional difference; used interchangeably in production for same design revisions. | Choose based on inventory availability; no design or layout impact. |
Compared with MSP430FR6879IPZ, the MSP430FR68891IPZ offers I²C BSL capability enabling secure in-field updates over two-wire interfaces, while MSP430FR6889IPZ provides identical functionality with simplified part-number tracking for volume manufacturing.
Availability
MSP430FR68891IPZ is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical metering requiring stable component supply, long-term FRAM data retention, and certified low-power operation.
Supply support for MSP430FR68891IPZ 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 and embedded processing solutions with emphasis on energy efficiency, reliability, and system-level integration.
The MSP430 ULP FRAM portfolio targets ultra-low-power metering and sensing applications, combining ferroelectric memory with holistic power architecture to extend battery life while maintaining computational capability.
FAQ
What is the FRAM endurance specification for MSP430FR68891IPZ?
The MSP430FR68891IPZ features 128KB of ferroelectric RAM rated for 1015 write cycles - orders of magnitude higher than flash memory. This enables continuous data logging in utility meters without wear-out concerns, supporting >10 years of daily 100-write operations. The FRAM also retains data without power and writes at 125 ns per word.
Does MSP430FR68891IPZ support real-time clock operation in ultra-low-power mode?
Yes, MSP430FR68891IPZ supports RTC operation in LPM3.5 mode with typical current consumption of 0.35 µA while retaining RAM and maintaining calendar functions. It uses an external 32-kHz crystal (LFXIN/LFXOUT pins) for ±20 ppm accuracy, essential for time-of-use billing in water and heat meters.
How many I/O pins does MSP430FR68891IPZ provide in its 100-pin LQFP package?
The MSP430FR68891IPZ in 100-pin LQFP (PZ) package provides 83 GPIOs across ports P1–P10 and PJ. All pins support capacitive touch sensing without external components, and multiple pins are multiplexed with LCD segment/common outputs, timers, and communication peripherals.
What communication interfaces are integrated into MSP430FR68891IPZ?
MSP430FR68891IPZ integrates four enhanced USCI modules: eUSCI_A0 and eUSCI_A1 support UART (with auto-baud detection), IrDA, and SPI; eUSCI_B0 and eUSCI_B1 support I²C (with multi-slave addressing) and SPI. This enables concurrent sensor bus management and host communication in metering systems.
Is MSP430FR68891IPZ pin-compatible with other devices in the MSP430FR68xx family?
Yes, MSP430FR68891IPZ shares identical 100-pin LQFP (PZ) package and pinout with MSP430FR6879IPZ and MSP430FR6889IPZ. Functional differences exist in BSL type (I²C vs UART) and minor peripheral enablement, but PCB layout and routing remain fully compatible across these variants.
MSP430FR68891IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-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, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 83
- 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 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR68891IPZ FAQ
1.How can I place an order for MSP430FR68891IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR68891IPZ 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 MSP430FR68891IPZ reliable?
The price and inventory of MSP430FR68891IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR68891IPZ is usually 5 days.
3.What payment methods are accepted for MSP430FR68891IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR68891IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR68891IPZ?
MSP430FR68891IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR68891IPZ 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 MSP430FR68891IPZ?
For technical support, including MSP430FR68891IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR68891IPZ requirements.
6.How does Aetrix verify that MSP430FR68891IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430FR68891IPZ 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 MSP430FR68891IPZ meets industry standards.
7.What is the process for return or replacement of MSP430FR68891IPZ?
All MSP430FR68891IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR68891IPZ, 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 MSP430FR68891IPZ part is unused and in its original packaging.
Return procedure for MSP430FR68891IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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