Texas Instruments MSP430FR69221IG56

Overview

MSP430FR69221IG56 from Texas Instruments is an ultra-low-power 16-bit FRAM microcontroller featuring 64KB nonvolatile FRAM, 2KB RAM, integrated 12-bit ADC with 8 external inputs, 116-segment LCD driver, and dual eUSCI modules supporting UART, IrDA, SPI, and I²C. It operates from 1.8 V to 3.6 V and targets battery-powered metering and sensing applications requiring RTC, capacitive touch, and cryptographic security.

For engineers reviewing the MSP430FR69221IG56 datasheet, MSP430FR69221IG56 pinout, MSP430FR69221IG56 application, or MSP430FR69221IG56 equivalent, key selection criteria include LPM3.5 RTC current (0.35 µA), FRAM endurance (10¹⁵ write cycles), AES256 coprocessor support, TSSOP-56 package compatibility, and absence of HFXT oscillator-critical for low-cost, crystal-only timing designs.

Technical Context

The MSP430FR69221IG56 implements the MSP430 CPUXV2 core with 16 registers and executes instructions at up to 16 MHz using a factory-trimmed DCO or external 32-kHz LFXT crystal. Its low-power architecture includes seven operating modes, with LPM3.5 enabling RTC operation at 0.35 µA while retaining full FRAM and register state.

Peripherals are tightly coupled via three-channel DMA and a unified memory map: FRAM serves as program, data, and storage space. The device integrates a 32-bit hardware multiplier, CRC16/CRC32 engines, five 16-bit timers (including Timer_A with 3+3 capture/compare channels and Timer_B with 2+5), and dual eUSCI_A/B modules-each supporting SPI up to 10 Mbps and independent protocol stacks (UART/IrDA vs. I²C).

Key Specifications

Pinout & Package

The MSP430FR69221IG56 is housed in a 56-pin Thin Shrink Small Outline Package (TSSOP) with 0.5-mm pitch, optimized for compact industrial and metering PCB layouts. Thermal pad connection is not applicable (no exposed pad).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR6922IG56, the MSP430FR69221IG56 adds hardware AES256 for secure firmware/data-critical for certified utility meters-while maintaining identical power, FRAM, and peripheral capabilities. Against MSP430FR69221IPMR, it trades package size and HFXT support for compact TSSOP-56 integration in space-constrained metering modules.

Availability

MSP430FR69221IG56 is available at Aetrix Electronics and suitable for heat cost allocators, utility meters, and portable medical equipment requiring stable component supply, long-lifecycle assurance, and TI-qualified production traceability.

Supply support for MSP430FR69221IG56 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 innovation.

The MSP430FR69xx product line delivers ultra-low-power mixed-signal MCUs built around ferroelectric RAM for battery-operated sensing, metering, and IoT edge nodes where write endurance, instant nonvolatility, and sub-µA RTC operation are mandatory.

FAQ

What is the maximum operating frequency of the MSP430FR69221IG56?

The MSP430FR69221IG56 supports a maximum CPU clock frequency of 16 MHz, achieved using its factory-trimmed digital controlled oscillator (DCO). External clock sources are limited to the 32-kHz LFXT crystal; HFXT is not implemented in this variant per TI documentation. This 16-MHz capability enables responsive real-time control in metering and sensor applications while maintaining ultra-low active-mode current (~100 µA/MHz).

Does the MSP430FR69221IG56 support hardware AES encryption?

Yes, the MSP430FR69221IG56 includes a dedicated 128/256-bit AES security coprocessor, confirmed in the device family datasheet (SLASE23E, Section 1.1). This hardware accelerator enables fast, low-power encryption and decryption operations without burdening the CPU-essential for secure firmware updates and encrypted data logging in utility metering applications compliant with DLMS/COSEM or ANSI C12 standards.

What package type and dimensions does the MSP430FR69221IG56 use?

The MSP430FR69221IG56 uses a 56-pin Thin Shrink Small Outline Package (TSSOP) with 0.5-mm pitch and body dimensions of 6.1 mm × 14 mm. This compact, surface-mount package is RoHS-compliant and optimized for high-density industrial PCB layouts. Pinout information is fully documented in Figure 4-3 of the SLASE23E datasheet, confirming compatibility with standard TSSOP-56 footprints and reflow profiles.

How much FRAM and RAM memory does the MSP430FR69221IG56 provide?

The MSP430FR69221IG56 integrates 64KB of ferroelectric RAM (FRAM) and 2KB of SRAM. The FRAM serves as unified memory for code, data, and nonvolatile storage-with 125 ns per word write speed and 10¹⁵ write-cycle endurance. Additionally, it includes 26 bytes of Tiny RAM retained during LPM3.5 and LPM4.5 modes. This memory architecture eliminates flash erase delays and enables robust, wear-free data logging in battery-powered applications.

Is the MSP430FR69221IG56 compatible with the MSP430FR6922IG56 in terms of pinout and software?

Yes, the MSP430FR69221IG56 is pin-compatible and software-compatible with the MSP430FR6922IG56, sharing identical TSSOP-56 packaging, peripheral register maps, and instruction set. The only functional difference is the inclusion of the AES256 coprocessor in the '221 variant. Firmware developed for MSP430FR6922IG56 runs unchanged on MSP430FR69221IG56; AES-enabled code simply remains inactive on the base part-enabling scalable design across secure and non-secure product tiers.