Texas Instruments MSP430FR69271IPM

Overview

MSP430FR69271IPM from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 64KB nonvolatile memory, 2KB RAM, integrated LCD driver for up to 116 segments (4-mux), 12-bit ADC with 8 external inputs, 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 MSP430FR69271IPM datasheet, MSP430FR69271IPM pinout, MSP430FR69271IPM application, or MSP430FR69271IPM equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 RTC current (0.35 µA typical), I²C bootloader support, capacitive touch I/O on all ports P1–P10/PJ, and absence of HFXT oscillator (LFXT-only clock system).

Technical Context

The MSP430FR69271IPM implements the MSP430 CPUXV2 core with 16 general-purpose registers and executes instructions at up to 16 MHz. Its clock system relies exclusively on DCO and LFXT (32-kHz crystal); HFXT is not implemented per device-specific functional block diagram.

It integrates three eUSCI modules: eUSCI_A0/A1 support UART, IrDA, and SPI; eUSCI_B0/B1 support I²C (with multi-slave addressing) and SPI. The hardware AES256 coprocessor enables secure encryption/decryption, and the 3-channel DMA controller offloads data movement from the CPU.

Key Specifications

Pinout & Package

The MSP430FR69271IPM is housed in a 64-pin LQFP (PM) package measuring 10 mm × 10 mm with exposed thermal pad (recommended connection to VSS). Pin functions are multiplexed across digital I/O, analog peripherals, timers, USCI interfaces, and LCD segment/common outputs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430FR6927IPM, the MSP430FR69271IPM provides I²C-based field-upgradable firmware without UART routing; versus MSP430FR6928IPM, it offers optimized cost and power for applications needing only 8 ADC inputs and 116-segment LCD.

Availability

MSP430FR69271IPM is available at Aetrix Electronics and suitable for water meters, heat cost allocators, and portable medical meters requiring stable component supply, long-term FRAM reliability, and certified low-power operation.

Supply support for MSP430FR69271IPM 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 company delivering analog and embedded processing solutions for industrial, automotive, and consumer applications.

The MSP430FR69xx family is designed for ultra-low-power metering and sensing applications where FRAM endurance, RTC accuracy, and integrated LCD/ADC reduce bill-of-materials and extend battery life.

FAQ

What is the maximum operating frequency of the MSP430FR69271IPM?

The MSP430FR69271IPM supports a maximum CPU clock frequency of 16 MHz using its factory-trimmed DCO oscillator. It does not implement the HFXT high-frequency crystal oscillator; clocking is limited to DCO and LFXT (32 kHz) sources per the device-specific functional block diagram. This 16-MHz capability enables real-time signal processing while maintaining ultra-low-power operation in active mode (≈100 µA/MHz).

Does the MSP430FR69271IPM support hardware encryption?

Yes, the MSP430FR69271IPM includes a dedicated hardware AES256 coprocessor that performs encryption and decryption operations independently of the CPU. It also integrates a true random number seed generator to support cryptographically secure key derivation. This enables secure firmware updates, protected data logging, and compliance with standards like FIPS 140-2 Level 1 in applications such as portable medical meters and utility meters.

What LCD configuration does the MSP430FR69271IPM support?

The MSP430FR69271IPM integrates the LCD_C peripheral supporting up to 116 segments in a 4-mux configuration. It provides dedicated segment and common output pins (e.g., P6.3–P6.6, P2.4–P2.7) and internal voltage generation for bias control. Unlike higher variants (e.g., MSP430FR6928IPM), it does not support 240-segment or static LCD modes - its design targets compact, low-power displays in heat cost allocators and portable meters.

Is the MSP430FR69271IPM pin-compatible with other MSP430FR69xx devices in the 64-pin LQFP package?

Yes, the MSP430FR69271IPM shares identical pinout and package dimensions (10 mm × 10 mm LQFP-64) with MSP430FR6927IPM and MSP430FR6928IPM. All three devices use the same PM package variant and maintain consistent signal mapping for power, ground, reset, debug, and primary peripherals. However, functional differences (e.g., I²C vs. UART BSL, ADC channel count, LCD segment limit) require firmware validation despite mechanical compatibility.

What is the standby current consumption of the MSP430FR69271IPM in LPM3 mode?

In LPM3 mode (VLO active, CPU and main peripherals disabled), the MSP430FR69271IPM draws 0.4 µA typical supply current. This mode retains RAM contents and enables wake-up via port interrupts or RTC alarms. When combined with the optional LPM3.5 mode (RTC active with VLO), current drops further to 0.35 µA typical - a critical specification for decade-long battery operation in water and heat meters where periodic wake-up and timestamped logging are required.