Texas Instruments MSP430FR5988IRGCT

Overview

MSP430FR5988IRGCT from Texas Instruments is an ultra-low-power 16-bit FRAM microcontroller designed for battery-operated metering and sensing applications. It integrates 96KB of nonvolatile FRAM, 2KB RAM, a 12-bit ADC with up to 12 external inputs, RTC with calendar/alarm, and an Extended Scan Interface (ESI) for capacitive fluid/gas measurement. Its active current is ~100 µA/MHz, standby (LPM3) is 0.4 µA, and RTC mode (LPM3.5) draws 0.35 µA - enabling multi-year operation on coin-cell batteries in water/heat meters.

For engineers reviewing the MSP430FR5988IRGCT datasheet, MSP430FR5988IRGCT pinout, MSP430FR5988IRGCT application, or MSP430FR5988IRGCT equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), ESI peripheral support for background analog sensing, AES256 security coprocessor, and VQFN-64 package compatibility with space-constrained meter designs.

Technical Context

The MSP430FR5988IRGCT implements the MSP430XV2 CPU core with 16 registers and executes instructions at up to 16 MHz. Its clock system includes factory-trimmed DCO (10 frequencies), LFXT (32-kHz crystal), HFXT (up to 24 MHz), and VLO - enabling precise timing control across ultra-low-power modes including LPM3.5 (RTC active) and LPM4.5 (shutdown at 0.02 µA).

Peripherals are tightly coupled to low-power operation: the ESI performs autonomous capacitive sensing without CPU intervention; three-channel DMA offloads data movement; and the 32-bit hardware multiplier accelerates signal processing. All I/O ports P1–P10 and PJ support capacitive touch sensing without external components.

Key Specifications

Pinout & Package

VQFN-64 package (9 mm × 9 mm, 0.5 mm pitch) with exposed thermal pad (TI recommends connecting pad to VSS). Pin count and function mapping match the MSP430FR598x family's 64-pin RGC variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FR5989IRGCT, the MSP430FR5988IRGCT offers 33% less FRAM but identical ESI, AES256, and ultra-low-power performance - making it optimal for metering applications with constrained memory needs. Against MSP430FR5969IPM, it delivers 50% more FRAM in a smaller VQFN package, prioritizing density and endurance over package familiarity.

Availability

MSP430FR5988IRGCT is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical device designs requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for MSP430FR5988IRGCT 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 MSP430 ULP FRAM portfolio targets energy-constrained applications like utility meters and portable sensors, combining ferroelectric memory with a holistic ultra-low-power architecture to extend battery life while maintaining computational capability.

FAQ

What is the maximum operating frequency of the MSP430FR5988IRGCT?

The MSP430FR5988IRGCT operates at up to 16 MHz using its factory-trimmed DCO or external HFXT crystal. This frequency is fully supported across all active and low-power modes, enabling real-time processing of ESI sensor data and AES256 encryption without compromising power efficiency. The device maintains timing accuracy through integrated clock supervision and SVS circuitry.

Does the MSP430FR5988IRGCT support hardware debugging?

Yes, the MSP430FR5988IRGCT supports hardware debugging via Spy-Bi-Wire using the TEST/SBWTCK and RST/NMI/SBWTDIO pins. This two-wire interface enables full JTAG-like functionality - including breakpoints, register inspection, and flash/FRAM programming - with minimal PCB footprint. No external debug probe is required beyond standard TI tools like MSP-FET or LaunchPad development kits.

How does the Extended Scan Interface (ESI) function in the MSP430FR5988IRGCT?

The ESI in the MSP430FR5988IRGCT is a dedicated peripheral that performs autonomous capacitive sensing without CPU involvement. It supports up to four independent channels (ESICH0–ESICH3) and integrated current sources (ESICI0–ESICI3), enabling direct measurement of fluid level, gas concentration, or heat exchanger fouling. Results are stored in dedicated RAM buffers and trigger interrupts only upon completion or threshold violation.

What are the key differences between MSP430FR5988IRGCT and MSP430FR5989IRGCT?

The MSP430FR5988IRGCT and MSP430FR5989IRGCT share identical packaging (VQFN-64), clock system, ESI, AES256, and low-power characteristics. The primary difference is FRAM capacity: 96 KB in MSP430FR5988IRGCT versus 128 KB in MSP430FR5989IRGCT. Additionally, the MSP430FR5989IRGCT supports 16 external ADC inputs, while the MSP430FR5988IRGCT supports 12 - a distinction relevant for multi-sensor applications.

Is the MSP430FR5988IRGCT qualified for industrial temperature range operation?

Yes, the MSP430FR5988IRGCT is specified for operation across –40°C to +85°C ambient temperature, meeting industrial-grade reliability requirements. Its SVS (Supply Voltage Supervisor) circuitry provides brownout protection down to 1.8 V, and the FRAM retains data integrity across the full temperature range without refresh cycles or wear degradation - critical for outdoor metering deployments.