Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Texas Instruments MSP430FR69891IPZR

Name: MSP430FR69891IPZR
Brand: Texas Instruments
SKU: MSP430FR69891IPZR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MSP430FR69891IPZR

Manufacturer:: Texas Instruments

Category:: Microcontrollers

Package:: 100-LQFP

Datasheet:: MSP430FR69891IPZR.pdf

Description:: IC MCU 16BIT 128KB FRAM 100LQFP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,362

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MSP430FR69891IPZR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128KB FRAM, 2KB RAM, integrated LCD driver (up to 320 segments), extended scan interface (ESI) for metering, and AES256 encryption. It operates from 1.8 V to 3.6 V and supports real-time clock (RTC) with calendar mode at 0.35 µA in LPM3.5 - deployed in utility water/heat meters and portable medical data loggers.

For engineers reviewing the MSP430FR69891IPZR datasheet, MSP430FR69891IPZR pinout, MSP430FR69891IPZR application, or MSP430FR69891IPZR equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), ESI peripheral for capacitive fluid/gas sensing, RTC+calendar functionality, and I2C bootloader support - all validated for battery-powered metering systems requiring >10-year operation.

Technical Context

The MSP430FR69891IPZR implements the ULP CPUXV2 core with seven low-power modes, including LPM3.5 (RTC active, 0.35 µA) and LPM4.5 (shutdown, 0.02 µA). Its FRAM memory architecture enables byte-level writes without erase cycles and eliminates write latency penalties typical of flash-based MCUs.

It integrates dual eUSCI modules: eUSCI_A0/A1 support UART (with auto-baud detection), IrDA, and SPI; eUSCI_B0/B1 support I2C (multi-slave addressing) and SPI. The ESI peripheral performs background capacitance-to-digital conversion for up to 16 channels - critical for non-invasive flow measurement in heat/water meters.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	16-bit RISC CPUXV2, up to 16 MHz - enables deterministic real-time control with minimal power overhead
Nonvolatile Memory	128 KB FRAM - supports 10¹⁵ write cycles, unified program/data/storage space, no erase required before write
RAM	2 KB SRAM - retains data in LPM3/LPM4 modes when powered, used for fast context switching and buffering
Supply Voltage Range	1.8 V to 3.6 V - compatible with single-cell Li-ion, 2xAA, or 3xAAA battery configurations
Active Current	~100 µA/MHz - enables high-performance sensor processing while maintaining multi-year battery life
LPM3.5 Current	0.35 µA (typical) - RTC + calendar remains fully functional with wake-on-alarm, ideal for time-triggered metering
ESI Channels	Up to 16 - performs simultaneous background capacitance measurements for fluid level, gas concentration, or heat exchanger fouling detection
LCD Driver	Supports up to 320 segments (8-mux) - drives full-featured display without external controller in utility meters

Pinout & Package

LQFP-100 package (14 mm × 14 mm), thermally enhanced with exposed pad; pin-compatible with MSP430FR6989IPZ but features I2C-based hardware bootloader (BSL) instead of UART BSL.

Pin/Terminal	Circuit Role	Design Meaning
P1.6 / UCB0SIMO / UCB0SDA / TA0.1	I2C Data / Timer_A Input	Primary I2C BSL data line (BSLSDA); also serves as TA0 capture/compare input - enables secure firmware updates and precise timing control
P1.7 / UCB0SOMI / UCB0SCL / TA0.2	I2C Clock / Timer_A Input	Primary I2C BSL clock line (BSLSCL); also TA0 CCR2 input - synchronizes BSL operations and supports event-triggered sampling
PJ.4 / LFXIN	Low-Frequency Crystal Input	Connects to 32.768 kHz crystal for RTC accuracy ±20 ppm - essential for billing-grade timekeeping in heat cost allocators
PJ.5 / LFXOUT	Low-Frequency Crystal Output	Drives 32.768 kHz crystal load; paired with PJ.4 to sustain RTC operation in LPM3.5 at 0.35 µA
P9.x / ESICH0–ESICH3	ESI Channel Inputs	Four dedicated ESI analog inputs for differential capacitance sensing - used in water meter transducer interfaces
P9.4–P9.7 / ESICI0–ESICI3	ESI Reference Inputs	Four ESI current reference inputs - enable ratiometric measurement to reject supply noise in battery-operated meters
RST/NMI/SBWTDIO	Reset / NMI / JTAG Data	Multi-function pin supporting reset assertion, non-maskable interrupt, and Spy-Bi-Wire debug - simplifies board-level test and field firmware recovery

Key Features

Feature	Design Value
Ferroelectric RAM (FRAM)	128 KB unified memory with 10¹⁵ write endurance - eliminates flash wear-out concerns in daily meter read/write cycles
Extended Scan Interface (ESI)	Hardware-accelerated capacitance-to-digital conversion on up to 16 channels - enables sub-100ms fluid volume measurement without CPU intervention
Real-Time Clock + Calendar	Integrated RTC with alarm, calendar, and temperature-compensated 32-kHz oscillator - meets MID Class B accuracy requirements for heat meters
AES256 Security Engine	Dedicated coprocessor for encryption/decryption - secures firmware updates and protects metering data against tampering per EN 13757-4
eUSCI Modules	Dual eUSCI_A (UART/IrDA/SPI) and dual eUSCI_B (I2C/SPI) - supports simultaneous AMR communication (M-Bus over UART) and sensor interfacing (I2C temp/humidity)
Capacitive Touch I/O	All P1–P10 and PJ pins support touch sensing without external components - enables sealed front-panel user interface in IP65-rated meters

Applications

Water Metering	Heat Cost Allocation
Use Scenario: Ultrasonic or electromagnetic water meter measuring flow rate and totalized volume in residential/commercial installations. IC Role / Device Role / Timing Role: Primary MCU executing ESI-based transit-time calculation, RTC-stamped data logging, and M-Bus communication via eUSCI_A0. Use Value: FRAM enables 10,000+ daily reads/writes over 15 years; ESI provides <1% flow measurement error at 0.01 m/s; RTC ensures accurate billing intervals.	Use Scenario: Heat cost allocator mounted on radiators to measure relative energy consumption per unit in multi-dwelling buildings. IC Role / Device Role / Timing Role: Sensor hub collecting radiator surface temperature (via ADC12_B), ambient temperature, and valve position; RTC timestamps hourly consumption snapshots. Use Value: LPM3.5 current (0.35 µA) extends coin-cell battery life beyond 10 years; LCD_C drives 128-segment display for local readout without backlight.
Portable Medical Data Logger	Industrial Gas Detection
Use Scenario: Battery-powered device recording glucose levels, ECG waveforms, or environmental parameters during patient monitoring. IC Role / Device Role / Timing Role: Central controller managing analog sensor acquisition (ADC12_B), secure data storage (FRAM), encrypted BLE transmission (eUSCI_A1), and low-power sleep scheduling. Use Value: AES256 encrypts PHI-compliant data before storage; FRAM allows immediate logging of transient events (e.g., arrhythmia spikes) without write latency.	Use Scenario: Fixed or portable gas detector analyzing methane, CO, or VOC concentration using MEMS capacitive or electrochemical sensors. IC Role / Device Role / Timing Role: ESI-peripheral-driven capacitance measurement of gas-sensitive polymer layers; CRC32 validates sensor integrity; watchdog ensures fail-safe shutdown. Use Value: ESI achieves 16-bit resolution at 100 Hz sampling - detects <50 ppm CH₄ drift; CRC32 prevents false alarms from corrupted calibration data.

Water Metering

Heat Cost Allocation

Use Scenario: Ultrasonic or electromagnetic water meter measuring flow rate and totalized volume in residential/commercial installations.

IC Role / Device Role / Timing Role: Primary MCU executing ESI-based transit-time calculation, RTC-stamped data logging, and M-Bus communication via eUSCI_A0.

Use Value: FRAM enables 10,000+ daily reads/writes over 15 years; ESI provides <1% flow measurement error at 0.01 m/s; RTC ensures accurate billing intervals.

Use Scenario: Heat cost allocator mounted on radiators to measure relative energy consumption per unit in multi-dwelling buildings.

IC Role / Device Role / Timing Role: Sensor hub collecting radiator surface temperature (via ADC12_B), ambient temperature, and valve position; RTC timestamps hourly consumption snapshots.

Use Value: LPM3.5 current (0.35 µA) extends coin-cell battery life beyond 10 years; LCD_C drives 128-segment display for local readout without backlight.

Portable Medical Data Logger

Industrial Gas Detection

Use Scenario: Battery-powered device recording glucose levels, ECG waveforms, or environmental parameters during patient monitoring.

IC Role / Device Role / Timing Role: Central controller managing analog sensor acquisition (ADC12_B), secure data storage (FRAM), encrypted BLE transmission (eUSCI_A1), and low-power sleep scheduling.

Use Value: AES256 encrypts PHI-compliant data before storage; FRAM allows immediate logging of transient events (e.g., arrhythmia spikes) without write latency.

Use Scenario: Fixed or portable gas detector analyzing methane, CO, or VOC concentration using MEMS capacitive or electrochemical sensors.

IC Role / Device Role / Timing Role: ESI-peripheral-driven capacitance measurement of gas-sensitive polymer layers; CRC32 validates sensor integrity; watchdog ensures fail-safe shutdown.

Use Value: ESI achieves 16-bit resolution at 100 Hz sampling - detects <50 ppm CH₄ drift; CRC32 prevents false alarms from corrupted calibration data.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MSP430FR6989IPZ	Identical FRAM/RAM/peripherals, but UART-based BSL (P2.0/P2.1) instead of I2C BSL; same LQFP-100 package	Preferred where UART-based field programming is standardized; requires UART transceiver for isolated M-Bus communication	Select MSP430FR6989IPZ if existing toolchain uses UART BSL; choose MSP430FR69891IPZR for I2C-only debug infrastructure or reduced pin count in sensor nodes
MSP430FR59891IPM	64-pin LQFP, no LCD_C or ESI; 128KB FRAM/2KB RAM; same I2C BSL; lacks COM outputs and segment drivers	Suitable for compact sensor nodes without display or fluid metering - e.g., temperature/humidity transmitters with LoRaWAN backhaul	MSP430FR59891IPM reduces PCB area and BOM cost where LCD and ESI are unnecessary; not drop-in replaceable due to missing peripherals and pinout mismatch

Compared with MSP430FR6989IPZ, the MSP430FR69891IPZR offers identical performance and memory but replaces UART BSL with I2C BSL - simplifying isolation design in smart meters. Against MSP430FR59891IPM, it adds ESI and LCD_C at the cost of larger footprint and higher pin count - justified only when capacitive sensing or local display is required.

Availability

MSP430FR69891IPZR is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical data logging requiring stable component supply across 10+ year product lifecycles.

Supply support for MSP430FR69891IPZR 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 for industrial, automotive, and consumer markets.

The MSP430 ULP FRAM portfolio targets energy-constrained applications such as utility metering and portable instrumentation, combining FRAM endurance with ultra-low-power operation and integrated metrology peripherals like ESI and RTC+calendar.

FAQ

What distinguishes MSP430FR69891IPZR from MSP430FR6989IPZ?

The MSP430FR69891IPZR features an I2C-based hardware bootloader (BSL) using P1.6 (BSLSDA) and P1.7 (BSLSCL), whereas the MSP430FR6989IPZ uses UART BSL on P2.0/P2.1. Both share identical FRAM, RAM, ESI, LCD_C, and LQFP-100 packaging - making them functionally equivalent except for BSL interface selection.

Does MSP430FR69891IPZR support real-time clock with calendar functionality?

Yes, the MSP430FR69891IPZR integrates RTC_C module with calendar mode (year/month/day/hour/minute/second), alarm capability, and 32-kHz crystal support (PJ.4/PJ.5). It operates in LPM3.5 at 0.35 µA typical, enabling decade-long battery life in time-critical metering applications.

Can MSP430FR69891IPZR drive a 320-segment LCD without external components?

Yes, the MSP430FR69891IPZR includes LCD_C peripheral supporting up to 320 segments in static or 2–8 multiplex configurations. It provides internal charge pump, contrast control, and bias generation - eliminating need for external LCD drivers in utility meter displays.

What is the role of the Extended Scan Interface (ESI) in MSP430FR69891IPZR?

The ESI in MSP430FR69891IPZR performs autonomous, low-power capacitance-to-digital conversion on up to 16 channels. It is used in water/heat meters to measure transducer capacitance shifts caused by fluid flow or thermal expansion - enabling high-accuracy, maintenance-free metrology without CPU polling.

Is MSP430FR69891IPZR qualified for industrial temperature range operation?

Yes, the MSP430FR69891IPZR is rated for –40°C to 85°C ambient operation per its datasheet specifications. This qualifies it for deployment in outdoor water meters, district heating substations, and industrial environments where thermal stability and long-term reliability are mandatory.

MSP430FR69891IPZR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 100-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, SPI, UART/USART

Peripherals:: Brown-out Detect/Reset, DMA, LCD, 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:

MSP430FR69891IPZR FAQ

1.How can I place an order for MSP430FR69891IPZR through Aetrix?

Please submit a Request for Quotation (RFQ) for MSP430FR69891IPZR 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 MSP430FR69891IPZR reliable?

The price and inventory of MSP430FR69891IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR69891IPZR is usually 5 days.

3.What payment methods are accepted for MSP430FR69891IPZR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR69891IPZR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MSP430FR69891IPZR?

MSP430FR69891IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MSP430FR69891IPZR 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 MSP430FR69891IPZR?

For technical support, including MSP430FR69891IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR69891IPZR requirements.

6.How does Aetrix verify that MSP430FR69891IPZR is sourced from the original manufacturer or authorized distributors?

All MSP430FR69891IPZR 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 MSP430FR69891IPZR meets industry standards.

7.What is the process for return or replacement of MSP430FR69891IPZR?

All MSP430FR69891IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR69891IPZR, 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 MSP430FR69891IPZR part is unused and in its original packaging.

Return procedure for MSP430FR69891IPZR:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…