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Texas Instruments MSP430FR59891IPMR

Name: MSP430FR59891IPMR
Brand: Texas Instruments
SKU: MSP430FR59891IPMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MSP430FR59891IPMR

Manufacturer:: Texas Instruments

Category:: Microcontrollers

Package:: 64-LQFP

Datasheet:: MSP430FR59891IPMR.pdf

Description:: IC MCU 16BIT 128KB FRAM 64LQFP

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Product details

Overview

MSP430FR59891IPMR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 128KB nonvolatile memory, 2KB RAM, integrated 12-bit ADC, AES256 encryption, and Extended Scan Interface (ESI) for metering applications. It operates from 1.8 V to 3.6 V, delivers 100 µA/MHz active current, and supports real-time clock operation at 0.35 µA in LPM3.5 - enabling battery-powered water/heat meters with >10-year runtime.

For engineers reviewing the MSP430FR59891IPMR datasheet, MSP430FR59891IPMR pinout, MSP430FR59891IPMR application, or MSP430FR59891IPMR equivalent, key selection criteria include ESI peripheral support for capacitive fluid sensing, FRAM endurance (10¹⁵ write cycles), I2C bootloader capability, and 64-pin LQFP (PM) package compatibility with industrial metering PCB layouts.

Technical Context

The MSP430FR59891IPMR implements the MSP430XV2 CPU core with unified FRAM memory space, enabling simultaneous code execution and data logging without erase latency. Its clock system integrates DCO, HFXT (up to 24 MHz), LFXT (32 kHz), and VLO - supporting precise RTC timing and dynamic power mode transitions.

It features dual eUSCI modules: eUSCI_A0/A1 support UART (with auto-baud detection) and SPI; eUSCI_B0/B1 support I2C (multi-slave addressing) and SPI. The ESI peripheral performs background analog signal acquisition across up to 16 channels for impedance-based flow/level measurement - independent of CPU intervention.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	16-bit RISC CPU (MSP430XV2) with 16 general-purpose registers and hardware multiplier
FRAM Capacity	128 KB nonvolatile memory - enables instant-write data logging, firmware updates without erase, and 10¹⁵ write endurance
ADC Resolution	12-bit SAR ADC with internal reference, sample-and-hold, and up to 12 external input channels
Low-Power Modes	LPM3.5 (RTC active): 0.35 µA typical; LPM4.5 (shutdown): 0.02 µA typical - extends battery life in sealed meters
Security Engine	AES256 coprocessor with true random number seed - enables secure firmware authentication and encrypted data transmission
ESI Channels	Extended Scan Interface with up to 16 analog inputs - performs autonomous capacitance/impedance measurements for water/heat metering
Package Type	64-pin LQFP (PM), 10 mm × 10 mm body - compatible with standard industrial PCB assembly and thermal management

Pinout & Package

Package: 64-pin LQFP (PM), 10 mm × 10 mm, exposed pad recommended to be connected to VSS per TI design guidelines.

Pin/Terminal	Circuit Role	Design Meaning
P1.0–P1.7	General-purpose I/O with capacitive touch, timer, USCI, ADC, and LCD functions	Multi-function ports support wake-up from LPM on edge, programmable pullup/pulldown, and ESI test channel routing
P2.0–P2.7	General-purpose I/O with USCI, timer, RTCCLK, DMAE0, and TB0 outputs	Includes BSLTX/BSLRX for UART bootloader (not used on I2C-BSL variant); P2.6/P2.7 route ESI outputs
P3.0–P3.7	General-purpose I/O with USCI_B1, USCI_A1, timer, and TB0 functions	Supports full-duplex SPI/I2C communication; P3.3–P3.7 serve as TB0.0–TB0.3 for LCD COM line driving
P4.0–P4.7	General-purpose I/O with USCI_B1, USCI_A0, and MCLK/ACLK routing	P4.0/P4.1 provide I2C SDA/SCL for secondary interface; P4.2 serves UCA0TXD and UCB1CLK
P5.0–P5.7	General-purpose I/O with TA1, UCA1, and TB0CLK functions	P5.0–P5.2 support TA1 capture/compare and ACLK routing; P5.4–P5.7 host UCA1 full-duplex UART
P9.0–P9.7	ESI channel inputs (ESICH0–ESICH3) and ESI control (ESICI0–ESICI3)	Dedicated ESI analog front-end pins - enable high-precision, low-noise capacitive sensing for fluid volume measurement
PJ.0–PJ.5	JTAG/SBW debug interface and crystal oscillator connections	PJ.4/PJ.5 connect 32-kHz LFXT; PJ.6/PJ.7 connect HFXT - essential for RTC accuracy and high-speed operation
RST/NMI/SBWTDIO	Reset, non-maskable interrupt, and Spy-Bi-Wire bidirectional data I/O	Enables single-wire debugging and programming without JTAG header - reduces board footprint and cost

Key Features

Feature	Design Value
Ferroelectric RAM (FRAM)	128 KB unified memory space eliminates erase latency, supports 125 ns word writes, and withstands 10¹⁵ write cycles - ideal for frequent sensor logging
Extended Scan Interface (ESI)	Hardware-accelerated capacitive/impedance measurement engine with 16-channel analog front-end - enables battery-operated water/heat metering without CPU load
I2C Bootloader (BSL)	Factory-programmed hardware bootloader accessible via P1.6 (BSLSDA) and P1.7 (BSLSCL) - allows field firmware updates over I2C without debugger
Ultra-Low-Power RTC	Real-time clock with calendar and alarm functions operating at 0.35 µA in LPM3.5 - maintains timekeeping during 10+ year battery life in sealed meters
Integrated AES256 Engine	Dedicated security coprocessor with true random number generator - accelerates encryption/decryption for secure data transmission in utility networks

Applications

Water Metering	Heat Cost Allocation
Use Scenario: Ultrasonic or impedance-based flow measurement in residential/commercial water meters with tamper detection and hourly consumption logging. IC Role / Device Role / Timing Role: Primary controller executing ESI-driven fluid sensing, FRAM-based data storage, and RTC-synchronized timestamping. Use Value: Enables >10-year battery life using LPM3.5 RTC and zero-erase FRAM logging - eliminating maintenance cycles in buried installations.	Use Scenario: Thermal energy allocation in multi-tenant buildings using temperature differential and flow rate integration over billing periods. IC Role / Device Role / Timing Role: Real-time accumulator managing dual-sensor inputs (inlet/outlet RTDs), integrating values via hardware CRC32, and storing results in FRAM. Use Value: Hardware CRC32 and AES256 ensure data integrity and secure transmission to central billing systems - meeting EN 1434 compliance requirements.
Portable Medical Meters	Data Logging Systems
Use Scenario: Battery-powered handheld devices measuring glucose, blood pressure, or inhaler usage with local storage and Bluetooth LE upload. IC Role / Device Role / Timing Role: Sensor hub aggregating analog (ADC) and digital (I2C) inputs, performing calibration math via MPY32, and buffering results in FRAM. Use Value: FRAM's instant-write capability prevents data loss during unexpected power removal - critical for medical audit trails.	Use Scenario: Industrial environmental monitors logging temperature, humidity, and gas concentration at 1-minute intervals for 5+ years. IC Role / Device Role / Timing Role: Autonomous logger using LPM3 with RTC alarm wakeup, ADC sampling, and FRAM circular buffer management. Use Value: 10¹⁵-cycle FRAM endurance supports continuous logging over product lifetime - no wear-leveling firmware required.

Water Metering

Heat Cost Allocation

Use Scenario: Ultrasonic or impedance-based flow measurement in residential/commercial water meters with tamper detection and hourly consumption logging.

IC Role / Device Role / Timing Role: Primary controller executing ESI-driven fluid sensing, FRAM-based data storage, and RTC-synchronized timestamping.

Use Value: Enables >10-year battery life using LPM3.5 RTC and zero-erase FRAM logging - eliminating maintenance cycles in buried installations.

Use Scenario: Thermal energy allocation in multi-tenant buildings using temperature differential and flow rate integration over billing periods.

IC Role / Device Role / Timing Role: Real-time accumulator managing dual-sensor inputs (inlet/outlet RTDs), integrating values via hardware CRC32, and storing results in FRAM.

Use Value: Hardware CRC32 and AES256 ensure data integrity and secure transmission to central billing systems - meeting EN 1434 compliance requirements.

Portable Medical Meters

Data Logging Systems

Use Scenario: Battery-powered handheld devices measuring glucose, blood pressure, or inhaler usage with local storage and Bluetooth LE upload.

IC Role / Device Role / Timing Role: Sensor hub aggregating analog (ADC) and digital (I2C) inputs, performing calibration math via MPY32, and buffering results in FRAM.

Use Value: FRAM's instant-write capability prevents data loss during unexpected power removal - critical for medical audit trails.

Use Scenario: Industrial environmental monitors logging temperature, humidity, and gas concentration at 1-minute intervals for 5+ years.

IC Role / Device Role / Timing Role: Autonomous logger using LPM3 with RTC alarm wakeup, ADC sampling, and FRAM circular buffer management.

Use Value: 10¹⁵-cycle FRAM endurance supports continuous logging over product lifetime - no wear-leveling firmware required.

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
MSP430FR5989IPM	Identical FRAM/RAM/ESI specs but includes UART BSL (P2.0/P2.1) instead of I2C BSL; same 64-pin LQFP package	Preferred where field firmware updates occur over UART (e.g., RS-485-connected meters); requires UART transceiver circuitry	Select MSP430FR5989IPM if UART-based BSL access is required; otherwise MSP430FR59891IPMR offers simpler I2C update path
MSP430FR5969IPM	64KB FRAM (half capacity), no ESI peripheral, same CPU, AES256, and LPM3.5 current (0.35 µA)	Suitable for basic sensor nodes without fluid/impedance measurement - lacks hardware acceleration for metering-grade analog acquisition	Choose MSP430FR5969IPM only for cost-sensitive, non-metering applications where ESI and 128KB FRAM are unnecessary

Compared with MSP430FR5989IPM, the MSP430FR59891IPMR trades UART BSL for I2C BSL - reducing external component count in I2C-enabled systems. Against MSP430FR5969IPM, it doubles FRAM and adds ESI - directly enabling high-accuracy, low-power utility metering without external analog front-end ICs.

Availability

MSP430FR59891IPMR is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical instrumentation requiring stable component supply, long-term lifecycle assurance, and TI-qualified industrial-grade packaging.

Supply support for MSP430FR59891IPMR 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, reliability, and system-level integration.

The MSP430 ULP FRAM portfolio targets battery-critical applications like utility meters and portable medical devices - combining FRAM endurance, sub-µA low-power modes, and integrated sensing peripherals to eliminate external components.

FAQ

What is the primary differentiator of the MSP430FR59891IPMR versus flash-based MCUs in metering applications?

The MSP430FR59891IPMR uses ferroelectric RAM (FRAM) instead of flash, enabling instant-write nonvolatile storage with 10¹⁵ write cycles and no erase latency. This eliminates wear-leveling overhead and guarantees data integrity during power loss - critical for revenue-grade water/heat meters where every logged reading must be preserved. Unlike flash MCUs, the MSP430FR59891IPMR sustains full FRAM performance across its entire temperature range (-40°C to 85°C).

Does the MSP430FR59891IPMR support hardware-accelerated cryptographic operations?

Yes, the MSP430FR59891IPMR integrates a dedicated AES256 security coprocessor with true random number generation. It offloads encryption/decryption tasks from the main CPU, enabling secure firmware updates and encrypted sensor data transmission without impacting real-time ESI or RTC operation. The hardware engine supports both 128-bit and 256-bit keys and complies with FIPS 140-2 Level 1 requirements when implemented per TI's security guidelines.

How does the Extended Scan Interface (ESI) in the MSP430FR59891IPMR improve metering accuracy?

The ESI in the MSP430FR59891IPMR is a dedicated analog front-end that performs autonomous capacitance and impedance measurements across up to 16 channels - without CPU intervention. It integrates programmable excitation sources, precision current sources, and correlated double sampling to reject noise and drift. This enables sub-0.1% measurement accuracy in water/heat meters under varying temperature and conductivity conditions - surpassing what discrete ADC + op-amp solutions achieve at equivalent power.

What are the bootloading options supported by the MSP430FR59891IPMR?

The MSP430FR59891IPMR features a factory-programmed I2C bootloader (BSL) accessible via P1.6 (BSLSDA) and P1.7 (BSLSCL). This allows in-system firmware updates using only two GPIOs and an I2C master - eliminating the need for UART transceivers or JTAG probes. The BSL supports memory read/write, mass erase, and password-protected access, and operates down to 1.8 V - enabling field updates even with depleted batteries.

Can the MSP430FR59891IPMR operate reliably in extended temperature environments common in outdoor metering?

Yes, the MSP430FR59891IPMR is specified for operation from –40°C to +85°C and qualified per JEDEC JESD22-A104 for temperature cycling. Its FRAM retains full write endurance and data retention across this range, and the integrated SVS (supply voltage supervisor) ensures safe brownout reset behavior down to 1.8 V. TI provides characterization data confirming stable ESI performance and RTC accuracy across the full industrial temperature range - critical for unattended outdoor deployments.

MSP430FR59891IPMR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 64-LQFP

Series:: MSP430™ FRAM

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:

MSP430FR59891IPMR FAQ

1.How can I place an order for MSP430FR59891IPMR through Aetrix?

Please submit a Request for Quotation (RFQ) for MSP430FR59891IPMR 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 MSP430FR59891IPMR reliable?

The price and inventory of MSP430FR59891IPMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR59891IPMR is usually 5 days.

3.What payment methods are accepted for MSP430FR59891IPMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR59891IPMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MSP430FR59891IPMR?

MSP430FR59891IPMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MSP430FR59891IPMR 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 MSP430FR59891IPMR?

For technical support, including MSP430FR59891IPMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR59891IPMR requirements.

6.How does Aetrix verify that MSP430FR59891IPMR is sourced from the original manufacturer or authorized distributors?

All MSP430FR59891IPMR 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 MSP430FR59891IPMR meets industry standards.

7.What is the process for return or replacement of MSP430FR59891IPMR?

All MSP430FR59891IPMR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR59891IPMR, 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 MSP430FR59891IPMR part is unused and in its original packaging.

Return procedure for MSP430FR59891IPMR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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