Texas Instruments MSP430FR5969IRGZR

Overview

MSP430FR5969IRGZR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller in a 48-pin VQFN package, featuring 64KB nonvolatile FRAM, 2KB RAM, 12-bit ADC with 16 external channels, RTC with calendar/alarm, and dual eUSCI modules supporting UART/IrDA/SPI/I²C. It targets battery-constrained sensor nodes and metering systems requiring sub-µA standby current.

For engineers reviewing the MSP430FR5969IRGZR datasheet, MSP430FR5969IRGZR pinout, MSP430FR5969IRGZR application, or MSP430FR5969IRGZR equivalent, key selection criteria include LPM3.5 current (0.25 µA), FRAM endurance (10¹⁵ writes), RTC clock source compatibility (LFXT), AES-256 encryption coprocessor, and 48-pin RGZ package thermal performance.

Technical Context

The MSP430FR5969IRGZR implements the CPUXV2 16-bit RISC core with hardware multiplier and 3-channel DMA, operating across seven low-power modes. Its clock system integrates DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT (high-frequency crystal) oscillators - with RTC_B enabled only when LFXT is active.

Analog subsystem includes ADC12_B with internal reference and sample-and-hold, 16-channel comparator (Comp_E), and voltage reference generator (REF_A). Digital peripherals include five 16-bit timers (TA0–TA3, TB0), CRC16, and capacitive touch I/O on all pins without external components.

Key Specifications

Pinout & Package

VQFN-48 (RGZ) package with 7 mm × 7 mm body size and exposed thermal pad recommended to be connected to DVSS. Pin count and signal mapping are validated per TI SLAS704G datasheet Section 4.1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR59691IRGZR and MSP430FR5968IRGZR, the MSP430FR5969IRGZR offers maximum FRAM capacity and UART-based BSL - making it optimal for complex, long-duration data logging with serial update flexibility.

Availability

MSP430FR5969IRGZR is available at Aetrix Electronics and suitable for smart metering, energy-harvested sensor nodes, and wearable electronics requiring stable component supply and long-term industrial availability.

Supply support for MSP430FR5969IRGZR 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 for industrial, automotive, and personal electronics markets.

The MSP430 ULP FRAM portfolio targets energy-constrained applications such as metering and sensor nodes, combining ferroelectric memory with ultra-low-power architecture to extend battery life while enabling robust data retention.

FAQ

What is the maximum operating frequency of the MSP430FR5969IRGZR?

The MSP430FR5969IRGZR supports a maximum system clock frequency of 16 MHz via its digitally controlled oscillator (DCO) or external HFXT crystal. This allows real-time execution of complex algorithms while maintaining ultra-low-power efficiency across all active and low-power modes. The CPUXV2 core delivers deterministic timing at this rate, and peripheral clocks (e.g., ADC, timers) scale accordingly without requiring additional configuration overhead.

Does the MSP430FR5969IRGZR support hardware-accelerated cryptography?

Yes, the MSP430FR5969IRGZR integrates a dedicated AES-256 security coprocessor that performs encryption and decryption independently of the CPU. This offloads cryptographic operations from the main core, preserving low-power operation during secure firmware updates or encrypted sensor data transmission. The coprocessor supports both 128-bit and 256-bit keys and operates without exposing key material to software-accessible memory.

How many analog input channels does the ADC12_B module support on the MSP430FR5969IRGZR?

The ADC12_B module on the MSP430FR5969IRGZR supports up to 16 external analog input channels (A0–A15) plus 2 internal sources (temperature sensor and reference voltage). Channel selection is fully programmable, and conversions can be triggered by timer, software, or external signals. The module includes integrated sample-and-hold and internal voltage reference, eliminating need for external components in most precision sensing applications.

What crystal oscillator configurations are supported by the MSP430FR5969IRGZR?

The MSP430FR5969IRGZR supports three clock sources: internal DCO (10 factory-trimmed frequencies), low-frequency 32-kHz crystal (LFXT) on PJ.4/PJ.5, and high-frequency crystal (HFXT) on PJ.6/PJ.7. LFXT is mandatory for RTC_B operation and LPM3.5 mode; HFXT enables full-speed CPU operation up to 24 MHz. Both crystals require external load capacitors per TI design guidelines.

Is the MSP430FR5969IRGZR pin-compatible with other devices in the MSP430FR59xx family?

Yes, the MSP430FR5969IRGZR in the RGZ-48 package shares identical pinout with MSP430FR59691IRGZR, MSP430FR5968IRGZR, and MSP430FR5967IRGZR. This enables direct substitution in existing PCB layouts when migrating between variants - for example, upgrading from 48KB to 64KB FRAM or selecting UART vs. I²C BSL functionality without hardware changes.