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

Texas Instruments MSP430FR2433IYQWT

Name: MSP430FR2433IYQWT
Brand: Texas Instruments
SKU: MSP430FR2433IYQWT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MSP430FR2433IYQWT

Manufacturer:: Texas Instruments

Category:: Microcontrollers

Package:: 24-UFBGA, DSBGA

Datasheet:: MSP430FR2433IYQWT.pdf

Description:: IC MCU 16BIT 15.5KB FRAM 24DSBGA

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Product details

Overview

MSP430FR2433IYQWT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 15.5 KB nonvolatile FRAM, 4 KB RAM, 10-bit 8-channel ADC (200 ksps), dual eUSCI_A (UART/SPI/IrDA) and one eUSCI_B (SPI/I²C), and four 16-bit timers-including two Timer_A3 with three capture/compare registers-packaged in a 24-ball DSBGA (YQW) for compact battery-powered sensing applications like electronic door locks and energy harvesting nodes.

For engineers reviewing the MSP430FR2433IYQWT datasheet, MSP430FR2433IYQWT pinout, MSP430FR2433IYQWT application, or MSP430FR2433IYQWT equivalent, key selection considerations include its 17 GPIOs in YQW package, LPM3.5 RTC operation at 730 nA, 16 MHz DCO clock with ±1% accuracy, and FRAM endurance of 10¹⁵ write cycles-critical for frequent data logging in constrained industrial sensor designs.

Technical Context

The MSP430FR2433IYQWT implements a 16-bit RISC CPU with integrated FRAM memory architecture enabling byte-level writes without erase cycles, paired with a holistic low-power system including SVS/BOR protection, programmable MCLK/SMCLK prescalers, and dedicated LPM3.5 domain isolating the 32768-Hz RTC counter while powering down all other peripherals.

Its analog subsystem integrates a 10-bit SAR ADC with internal 1.5-V reference and sample-and-hold, supporting up to eight single-ended channels; digital peripherals include two enhanced UART-capable eUSCI_A modules, one I²C/SPI eUSCI_B, CRC16 engine, and MPY32 hardware multiplier-all accessible via 17 configurable GPIOs on the DSBGA-24 footprint with Schmitt-trigger inputs and interrupt capability on P1/P2 pins.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	16-bit RISC CPU with 16 general-purpose registers and 32-bit hardware multiplier (MPY32)
Memory	15.5 KB FRAM (15 KB program + 512 B info), 4 KB SRAM, unified memory map with ECC and write protection
ADC	10-bit SAR with 8 single-ended channels, 200 ksps sampling rate, internal 1.5-V reference, 730 nA LPM3.5 RTC current
Timers	Four 16-bit timers: two Timer_A3 (3 CCR each), two Timer_A2 (2 CCR each), plus 16-bit RTC counter
Communication	Two eUSCI_A (UART/IrDA/SPI), one eUSCI_B (SPI/I²C), JTAG/Spy-Bi-Wire debug interface
Power Modes	Active mode: 126 µA/MHz; LPM3.5: 730 nA (RTC active); LPM4.5 shutdown: 16 nA
Supply Range	1.8 V to 3.6 V; minimum voltage constrained by SVS thresholds, not absolute logic limit

Pinout & Package

Package: 24-ball DSBGA (YQW), 2.29 mm × 2.34 mm, 0.4-mm pitch, no thermal pad. Ball layout follows JEDEC MO-248, with DVCC/DVSS power balls distributed across corners and center for low-impedance supply routing.

Pin/Terminal	Circuit Role	Design Meaning
RST/NMI/SBWTDIO (E1)	Reset / Non-maskable interrupt / Spy-Bi-Wire data I/O	Multi-function pin supporting device initialization, critical fault handling, and debug communication over 2-wire interface
TEST/SBWTCK (D2)	Test mode select / Spy-Bi-Wire clock	Enables JTAG-compatible debugging; must be held high during normal operation unless actively debugging
P1.4–P1.7, P2.0–P2.7, P3.0–P3.2	General-purpose I/O with peripheral multiplexing	17 total GPIOs support UART, SPI, I²C, ADC inputs, timer capture/compare, and wake-up from LPM3.5/LPM4
A0–A7	Analog input channels	Eight dedicated ADC input pins mapped to P1.0–P1.7 (A0–A7), with internal VREF+ and VREF− references
XIN/XOUT (E3/E4)	Low-frequency crystal oscillator terminals	Supports external 32.768-kHz crystal for precise RTC timing; requires external load capacitors per datasheet guidelines
DVCC/DVSS (E2, D3, C5)	Digital/analog power supply pair	DVCC (E2) and DVSS (D3, C5) require local 0.1-µF ceramic + 4.7–10-µF bulk decoupling per TI layout recommendations

Key Features

Feature	Design Value
Ferroelectric RAM (FRAM)	15.5 KB nonvolatile memory with 10¹⁵ write endurance, byte-level writes, and built-in ECC-eliminates flash erase latency and wear leveling overhead
Ultra-low-power RTC	LPM3.5 mode sustains real-time clock operation at 730 nA using 32.768-kHz crystal-enables decade-scale battery life in intermittent-sensing applications
Integrated clock system	On-chip 16-MHz DCO with FLL, ±1% accuracy at room temperature; REFO, VLO, MODOSC, and LFXT support flexible clock sourcing without external crystals
Peripheral flexibility	Pin-muxed eUSCI_A/B, ADC, timers, and GPIO allow dynamic reconfiguration-reducing BOM count in space-constrained designs like smart locks
Robust debug interface	Spy-Bi-Wire (SBW) enables full-speed debugging and programming through two pins-preserving GPIO count in production firmware updates

Applications

Electronic Door Locks	Energy Harvesting Sensors
Use Scenario: Battery-powered smart lock with keypad, BLE interface, and tamper detection requiring secure, long-life nonvolatile storage for access logs and firmware updates. IC Role / Device Role / Timing Role: Main controller managing motor drivers, touch/keypad scanning, secure boot, and RTC-based audit timestamps. Use Value: FRAM enables instant logging of 100,000+ access events without flash wear-out; 16 nA LPM4.5 extends CR2450 battery life beyond 5 years.	Use Scenario: Solar- or vibration-powered environmental sensor node measuring temperature/humidity and transmitting data via sub-GHz RF every 5 minutes. IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting PMIC control, ADC sampling, data compression, and low-duty-cycle radio wake-up scheduling. Use Value: 126 µA/MHz active current and 730 nA RTC enable >99% sleep duty cycle; FRAM stores calibration coefficients and burst samples without power-loss corruption.
Portable Medical Monitors	Industrial Wireless Sensor Nodes
Use Scenario: Wearable pulse oximeter with optical sensors, Bluetooth LE, and rechargeable coin cell requiring clinical-grade signal integrity and data retention during charging interruptions. IC Role / Device Role / Timing Role: Signal acquisition hub performing synchronized ADC sampling, digital filtering, and timestamped data buffering before BLE transmission. Use Value: 10-bit ADC with internal reference ensures consistent gain across battery discharge; FRAM retains raw waveform buffers even during sudden power loss.	Use Scenario: DIN-rail mounted condition monitor on motors/pumps collecting vibration spectra via MEMS accelerometers and reporting anomalies via LoRaWAN. IC Role / Device Role / Timing Role: Edge preprocessing unit executing FFT windowing, peak detection, and event-triggered telemetry with deterministic timing. Use Value: 16-bit timers with capture/compare support precise PWM-driven sensor excitation; 4 KB RAM accommodates 2 kB FFT buffers without external memory.

Electronic Door Locks

Energy Harvesting Sensors

Use Scenario: Battery-powered smart lock with keypad, BLE interface, and tamper detection requiring secure, long-life nonvolatile storage for access logs and firmware updates.

IC Role / Device Role / Timing Role: Main controller managing motor drivers, touch/keypad scanning, secure boot, and RTC-based audit timestamps.

Use Value: FRAM enables instant logging of 100,000+ access events without flash wear-out; 16 nA LPM4.5 extends CR2450 battery life beyond 5 years.

Use Scenario: Solar- or vibration-powered environmental sensor node measuring temperature/humidity and transmitting data via sub-GHz RF every 5 minutes.

IC Role / Device Role / Timing Role: System-on-chip managing energy harvesting PMIC control, ADC sampling, data compression, and low-duty-cycle radio wake-up scheduling.

Use Value: 126 µA/MHz active current and 730 nA RTC enable >99% sleep duty cycle; FRAM stores calibration coefficients and burst samples without power-loss corruption.

Portable Medical Monitors

Industrial Wireless Sensor Nodes

Use Scenario: Wearable pulse oximeter with optical sensors, Bluetooth LE, and rechargeable coin cell requiring clinical-grade signal integrity and data retention during charging interruptions.

IC Role / Device Role / Timing Role: Signal acquisition hub performing synchronized ADC sampling, digital filtering, and timestamped data buffering before BLE transmission.

Use Value: 10-bit ADC with internal reference ensures consistent gain across battery discharge; FRAM retains raw waveform buffers even during sudden power loss.

Use Scenario: DIN-rail mounted condition monitor on motors/pumps collecting vibration spectra via MEMS accelerometers and reporting anomalies via LoRaWAN.

IC Role / Device Role / Timing Role: Edge preprocessing unit executing FFT windowing, peak detection, and event-triggered telemetry with deterministic timing.

Use Value: 16-bit timers with capture/compare support precise PWM-driven sensor excitation; 4 KB RAM accommodates 2 kB FFT buffers without external memory.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MSP430FR2476IRGER	32 KB FRAM, 6 KB RAM, 16 GPIOs in VQFN-32; adds DAC and comparator; no YQW option	Better suited for analog-intensive designs needing DAC output or comparator hysteresis; larger footprint limits use in <4 mm² layouts	Select when higher memory or analog integration justifies VQFN-32 package and increased board area
STM32L011K4T6	32-bit ARM Cortex-M0+, 16 KB Flash, 2 KB RAM, 12 GPIOs in TSSOP-20; no FRAM; 12-bit ADC at 1 Msps	Higher compute throughput but lacks FRAM endurance; Flash write latency impacts frequent logging; smaller TSSOP-20 vs YQW-24	Prefer for cost-sensitive, moderate-duty-cycle applications where Flash endurance suffices and ARM ecosystem compatibility is required

Compared with MSP430FR2476IRGER and STM32L011K4T6, the MSP430FR2433IYQWT delivers optimal balance of FRAM reliability, ultra-low standby current, and minimal 2.3 mm × 2.3 mm footprint-making it uniquely suitable for space- and energy-constrained sensing nodes where data integrity under intermittent power is non-negotiable.

Availability

MSP430FR2433IYQWT is available at Aetrix Electronics and suitable for electronic door locks, portable medical monitors, and industrial wireless sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for MSP430FR2433IYQWT 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 specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in low-power design.

The MSP430FR2433IYQWT belongs to TI's Value Line sensing portfolio-the lowest-cost FRAM MCU family engineered specifically for battery-operated measurement applications demanding extreme energy efficiency and nonvolatile data resilience.

FAQ

What is the maximum operating frequency of the MSP430FR2433IYQWT?

The MSP430FR2433IYQWT supports a maximum CPU clock frequency of 16 MHz using its on-chip digitally controlled oscillator (DCO) with frequency-locked loop (FLL). This 16-MHz operation is achievable across the full 1.8-V to 3.6-V supply range and maintains ±1% accuracy at room temperature when calibrated against the internal reference oscillator. The MSP430FR2433IYQWT does not require external crystals for high-speed operation, though LFXT can be used for precision RTC timing.

How many GPIO pins does the MSP430FR2433IYQWT provide in its YQW package?

The MSP430FR2433IYQWT in the 24-ball DSBGA (YQW) package provides 17 general-purpose I/O pins: P1.0–P1.7 (8 pins), P2.0–P2.7 (8 pins), and P3.0–P3.2 (3 pins). All 17 pins support peripheral multiplexing (e.g., UART, SPI, ADC), interrupt generation, and wake-up from low-power modes. Note that P1 and P2 pins support edge-triggered interrupts usable in LPM3.5 and deeper sleep states-critical for event-driven sensing applications.

Does the MSP430FR2433IYQWT support real-time clock functionality with battery backup?

Yes, the MSP430FR2433IYQWT includes a dedicated 16-bit real-time clock (RTC) counter capable of operating in LPM3.5 mode at 730 nA typical current draw when powered by a 32.768-kHz external crystal. While the device does not integrate a separate VBAT rail, the RTC remains functional during main supply brownout if the system uses an external supercapacitor or coin cell tied to DVCC. The MSP430FR2433IYQWT RTC supports calendar mode, alarm interrupts, and automatic leap-year correction per the MSP430FR4xx/FR2xx Family User's Guide.

What is the FRAM endurance specification for the MSP430FR2433IYQWT?

The MSP430FR2433IYQWT features ferroelectric RAM with 10¹⁵ write cycle endurance-orders of magnitude higher than flash or EEPROM. This means the FRAM can sustain daily writes to the same memory location for over 2.7 million years before reaching end-of-life. The MSP430FR2433IYQWT FRAM also includes built-in error correction code (ECC) and configurable write protection, ensuring data integrity during power loss and preventing accidental overwrites in safety-critical logging applications.

Can the MSP430FR2433IYQWT operate from a 1.8-V supply while maintaining full peripheral functionality?

Yes, the MSP430FR2433IYQWT is fully specified to operate from 1.8 V to 3.6 V, and all peripherals-including the 10-bit ADC, eUSCI_A/B modules, timers, and FRAM-are functional across this entire range. However, the minimum usable supply voltage is constrained by the supply voltage supervisor (SVS) thresholds, which vary with temperature and configuration. At 1.8 V, the device achieves 126 µA/MHz active current and supports 16-MHz DCO operation, making it ideal for single-cell Li-ion or alkaline battery systems where voltage drops below 2.0 V during discharge.

MSP430FR2433IYQWT Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 24-UFBGA, DSBGA

Series:: MSP430™ FRAM

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Core Processor:: MSP430 CPU16

Core Size:: 16-Bit

Speed:: 16MHz

Connectivity:: I2C, IrDA, SCI, SPI, UART/USART

Peripherals:: Brown-out Detect/Reset, POR, PWM, WDT

Number of I/O:: 17

Program Memory Size:: 15.5KB (15.5K x 8)

Program Memory Type:: FRAM

EEPROM Size:: -

RAM Size:: 4K x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 3.6V

Data Converters:: A/D 8x10b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

MSP430FR2433IYQWT FAQ

1.How can I place an order for MSP430FR2433IYQWT through Aetrix?

Please submit a Request for Quotation (RFQ) for MSP430FR2433IYQWT 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 MSP430FR2433IYQWT reliable?

The price and inventory of MSP430FR2433IYQWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2433IYQWT is usually 5 days.

3.What payment methods are accepted for MSP430FR2433IYQWT?

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4.How is shipping managed for MSP430FR2433IYQWT?

MSP430FR2433IYQWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MSP430FR2433IYQWT 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 MSP430FR2433IYQWT?

For technical support, including MSP430FR2433IYQWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2433IYQWT requirements.

6.How does Aetrix verify that MSP430FR2433IYQWT is sourced from the original manufacturer or authorized distributors?

All MSP430FR2433IYQWT 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 MSP430FR2433IYQWT meets industry standards.

7.What is the process for return or replacement of MSP430FR2433IYQWT?

All MSP430FR2433IYQWT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2433IYQWT, 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 MSP430FR2433IYQWT part is unused and in its original packaging.

Return procedure for MSP430FR2433IYQWT:

1.Submit a request within 90 days.

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

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