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Texas Instruments MSP430FR59891IRGCT
- Part No.:
- MSP430FR59891IRGCT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR59891IRGCT.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
MSP430FR59891IRGCT from Texas Instruments is an ultra-low-power 16-bit FRAM microcontroller designed for battery-operated metering and sensing applications. It integrates 128KB ferroelectric RAM, 2KB SRAM, a 12-bit ADC with up to 12 external inputs, extended scan interface (ESI) for fluid/gas measurement, and AES256 encryption. Its active current is ~100 µA/MHz, standby (LPM3) is 0.4 µA, and RTC mode (LPM3.5) draws 0.35 µA - enabling multi-year operation on coin-cell batteries in water/heat meters.
For engineers reviewing the MSP430FR59891IRGCT datasheet, MSP430FR59891IRGCT pinout, MSP430FR59891IRGCT application, or MSP430FR59891IRGCT equivalent, key selection factors include ESI peripheral support for background analog sensing, FRAM endurance (1015 write cycles), I2C bootloader capability, and VQFN-64 (9 mm × 9 mm) packaging with 48 GPIOs - critical for compact, high-reliability utility meter designs.
Technical Context
The MSP430FR59891IRGCT implements the MSP430 CPUXV2 core with 16 registers and executes instructions at up to 16 MHz. Its clock system includes factory-trimmed DCO, LFXT (32 kHz crystal), and HFXT (up to 24 MHz), supporting dynamic frequency scaling across seven low-power modes including LPM3.5 (RTC-active) and LPM4.5 (shutdown at 0.02 µA).
Peripherals are tightly coupled to power domains: ESI operates autonomously during LPM3, the 3-channel DMA enables zero-CPU data movement, and the 16-channel comparator supports capacitive touch without external components. The device uses Spy-Bi-Wire for debug and features hardware CRC16/CRC32 for firmware integrity verification.
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 low code footprint |
| Nonvolatile Memory | 128KB FRAM with 1015 write endurance - eliminates flash wear-out concerns in frequent-data-logging applications |
| ADC | 12-bit SAR ADC with internal reference and 12 external input channels - supports precision sensor interfacing without external voltage references |
| Low-Power Modes | LPM3 (0.4 µA), LPM3.5 (RTC active, 0.35 µA), LPM4.5 (0.02 µA) - extends battery life to >10 years in intermittent-read metering systems |
| Security | AES256 encryption/decryption coprocessor + true random number seed - meets firmware protection and secure communication requirements for utility-grade devices |
| ESI Peripheral | Extended Scan Interface with autonomous background measurement - enables simultaneous water/heat/gas volume sensing without CPU intervention |
| Package | VQFN-64 (9 mm × 9 mm, 0.5 mm pitch) - provides compact footprint and thermal performance suitable for sealed meter enclosures |
Pinout & Package
VQFN-64 package (9 mm × 9 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, moisture sensitivity level 3. TI recommends connecting the exposed pad to VSS for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O with capacitive touch, ADC, timer, USCI | Multi-function pins supporting sensor interface, communication, and low-power wake-up - reduces BOM count in meter front-ends |
| P2.0–P2.7 | USCI_A0 TX/RX/CLK/STE, TB0 COM outputs, DMAE0 | Primary UART/IrDA/SPI interface plus LCD segment drivers - enables direct connection to display and serial modems |
| P3.0–P3.7 | USCI_B1 CLK/SIMI/SOMI/STE, TA1, UCA1 | Dual USCI support allows concurrent I2C sensor bus and secondary SPI peripheral - simplifies multi-sensor integration |
| P5.0–P5.7 | TA1, UCA1, RTCCLK, MCLK, ACLK | Timer and clock domain routing enables precise time-stamping of sensor events and synchronized sampling |
| P9.0–P9.7 | ESI channel inputs (ESICH0–ESICH3), test signals | Dedicated ESI analog front-end inputs - enable high-accuracy ultrasonic flow measurement without external signal conditioning |
| PJ.4/PJ.5 | LFXIN/LFXOUT | 32-kHz crystal oscillator terminals - provide stable RTC timing with ±20 ppm accuracy over temperature |
| RST/NMI/SBWTDIO | Reset, non-maskable interrupt, Spy-Bi-Wire I/O | Single-pin debug interface reduces PCB routing complexity versus JTAG - ideal for space-constrained meter PCBs |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128KB unified memory with 125 ns write speed and 1015 endurance - enables logging 100+ sensor readings per second for >30 years without degradation |
| Extended Scan Interface (ESI) | Autonomous analog measurement engine with programmable gain, filtering, and background calibration - eliminates need for external ADCs or op-amps in ultrasonic flow meters |
| Ultra-Low-Power RTC | 0.35 µA typical current in LPM3.5 mode with calendar/alarm functions - maintains accurate timekeeping while preserving battery capacity for decade-long deployments |
| Hardware AES256 Engine | Dedicated cryptographic coprocessor with DMA-assisted data transfer - accelerates secure firmware updates and encrypted sensor data transmission without CPU load |
| Capacitive Touch I/O | All P1–P10 and PJ pins support CSD without external components - enables robust, waterproof user interfaces on heat/water meter housings |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
Use Scenario: Ultrasonic time-of-flight measurement in residential water meters with tamper detection and hourly consumption logging. IC Role / Device Role / Timing Role: Primary controller executing ESI-based flow calculation, FRAM-based data storage, and RTC-scheduled transmissions. Use Value: Eliminates mechanical wear and enables 10+ year battery life via LPM3.5 RTC and sub-µA standby - meeting OIML R49 and EN 14154 standards. |
Use Scenario: Thermal energy allocation in multi-dwelling buildings using temperature differential and flow rate measurements. IC Role / Device Role / Timing Role: Dual-sensor fusion processor with simultaneous ADC sampling and ESI-based flow analysis, synchronized by RTC calendar. Use Value: Integrated ESI and 12-bit ADC achieve ±0.5% flow accuracy without external signal chain - reducing billable error and certification cost. |
| Portable Medical Gas Monitoring | Data Logging for Industrial Sensors |
Use Scenario: Battery-powered oxygen concentrator with real-time gas concentration monitoring and event-triggered alarms. IC Role / Device Role / Timing Role: Sensor hub managing analog front-end, alarm logic, and secure BLE data upload via eUSCI_A0 UART. Use Value: FRAM enables instant write-on-event logging (e.g., pressure spike) with no write latency - ensuring critical fault records are never lost. |
Use Scenario: Remote environmental sensor node collecting temperature, humidity, and CO₂ every 15 minutes for 5+ years. IC Role / Device Role / Timing Role: Autonomous logger using LPM3.5 RTC wake-up, FRAM circular buffer, and AES256-encrypted data packets. Use Value: 0.35 µA RTC current and 1015 FRAM writes guarantee reliable 10-year field deployment without maintenance or memory replacement. |
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 |
|---|---|---|---|
| MSP430FR5989IRGC | UART bootloader (BSL) instead of I2C BSL; identical FRAM, ESI, and pinout | Requires UART-based programming infrastructure; same metering functionality | Select when legacy UART toolchains or field-programmable modems are already deployed |
| MSP430FR5969IRGCT | 64KB FRAM (vs. 128KB), no ESI peripheral, same VQFN-64 package and core | Not suitable for ultrasonic flow measurement; limited to basic sensor logging | Select only for cost-sensitive, non-ESI applications where 64KB FRAM suffices |
Compared with MSP430FR5989IRGC and MSP430FR5969IRGCT, the MSP430FR59891IRGCT uniquely combines I2C BSL for simplified secure provisioning, full ESI capability for fluid measurement, and 128KB FRAM for extended data retention - making it the only option qualified for EN 1434-compliant heat meters requiring autonomous analog sensing.
Availability
MSP430FR59891IRGCT is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical gas monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for MSP430FR59891IRGCT 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-level innovation.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as utility meters and portable instrumentation, combining FRAM memory, ultra-low-power architecture, and integrated sensing peripherals to eliminate flash limitations and extend battery life.
FAQ
What is the primary differentiator of MSP430FR59891IRGCT versus other MSP430FR59xx devices?
The MSP430FR59891IRGCT features an I2C bootloader (BSL), distinguishing it from UART-BSL variants like MSP430FR5989IRGC. This enables secure, two-wire firmware updates in systems where UART resources are constrained or where I2C infrastructure is already present. All other core specifications - 128KB FRAM, ESI, 12-bit ADC, and VQFN-64 package - remain identical to the MSP430FR59891IRGCT family.
Does MSP430FR59891IRGCT support real-time clock operation in ultra-low-power mode?
Yes, the MSP430FR59891IRGCT supports RTC operation in LPM3.5 mode with typical current consumption of 0.35 µA. It includes calendar and alarm functions, runs from the 32-kHz LFXT crystal (PJ.4/PJ.5), and retains full functionality while the CPU and most peripherals are powered down - enabling decade-long timekeeping in battery-powered meters.
Can MSP430FR59891IRGCT directly drive an LCD display?
No, the MSP430FR59891IRGCT does not integrate an LCD driver. Unlike the MSP430FR69891 series, the FR598x1 family omits the LCD_C peripheral. Its pinout and documentation confirm no COM/SEG output capability - requiring external LCD controllers or segment drivers when display functionality is needed.
What is the role of the Extended Scan Interface (ESI) in MSP430FR59891IRGCT?
The ESI in MSP430FR59891IRGCT is a dedicated analog measurement engine that performs autonomous, low-power background scanning of up to 16 inputs. It supports ultrasonic flow measurement, capacitance-to-digital conversion, and impedance spectroscopy - all without CPU intervention. This enables continuous fluid/gas sensing in water and heat meters while maintaining sub-µA system sleep current.
Is MSP430FR59891IRGCT pin-compatible with MSP430FR5989IRGC?
Yes, MSP430FR59891IRGCT and MSP430FR5989IRGC share identical VQFN-64 (RGC) packaging, pinout, and electrical characteristics. The only functional difference is the bootloader interface: MSP430FR59891IRGCT uses I2C BSL (P1.6/P1.7), while MSP430FR5989IRGC uses UART BSL (P2.0/P2.1). PCB layouts are interchangeable, but firmware tools must match the BSL type.
MSP430FR59891IRGCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- 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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 48
- 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:
MSP430FR59891IRGCT FAQ
1.How can I place an order for MSP430FR59891IRGCT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR59891IRGCT 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 MSP430FR59891IRGCT reliable?
The price and inventory of MSP430FR59891IRGCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR59891IRGCT is usually 5 days.
3.What payment methods are accepted for MSP430FR59891IRGCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR59891IRGCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR59891IRGCT?
MSP430FR59891IRGCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR59891IRGCT 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 MSP430FR59891IRGCT?
For technical support, including MSP430FR59891IRGCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR59891IRGCT requirements.
6.How does Aetrix verify that MSP430FR59891IRGCT is sourced from the original manufacturer or authorized distributors?
All MSP430FR59891IRGCT 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 MSP430FR59891IRGCT meets industry standards.
7.What is the process for return or replacement of MSP430FR59891IRGCT?
All MSP430FR59891IRGCT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR59891IRGCT, 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 MSP430FR59891IRGCT part is unused and in its original packaging.
Return procedure for MSP430FR59891IRGCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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