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Texas Instruments MSP430FR2672TRHBT
- Part No.:
- MSP430FR2672TRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2672TRHBT.pdf
- Description:
- IC MCU 16BIT 8.5KB FRAM 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,492
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Product details
Overview
MSP430FR2672TRHBT from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller with integrated CapTIvate™ capacitive touch sensing, supporting up to 16 self-capacitive and 24 mutual-capacitive electrodes. It features 8KB program FRAM, 2KB RAM, and operates from 1.8 V to 3.6 V with active-mode current of 135 µA/MHz. Designed for battery-powered HMI applications such as smart locks and appliance control panels, it delivers hardware-accelerated wake-on-touch at <0.9 µA/button.
For engineers reviewing the MSP430FR2672TRHBT datasheet, MSP430FR2672TRHBT pinout, MSP430FR2672TRHBT application, or MSP430FR2672TRHBT equivalent, key selection criteria include its 32-pin VQFN (RHB) package, CapTIvate-specific timer resource, LPM4.5 shutdown current of 37 nA, and support for metal/water-rejecting touch designs under IEC-61000-4-2/4-4/4-6 compliance.
Technical Context
The MSP430FR2672TRHBT implements a dedicated CapTIvate timing module synchronized with Timer_B7 (7-CCR), enabling concurrent self- and mutual-capacitance scanning without CPU intervention. Its FRAM memory architecture supports ECC, configurable write protection, and 1015 write endurance-critical for touch calibration data logging in field-deployed systems.
CapTIvate firmware executes in ROM while sensor measurements are handled by autonomous hardware state machines, allowing the 16-MHz DCO-based CPU to remain in LPM3 during touch monitoring. The device integrates eUSCI_A0/A1 (UART/SPI/IrDA) and eUSCI_B0/B1 (SPI/I²C), with pin remap capability for flexible PCB routing in space-constrained 5 mm × 5 mm layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators for optimized code density |
| Memory | 8KB program FRAM + 512B information FRAM + 2KB RAM; unified nonvolatile storage with ECC |
| Capacitive Sensing | Up to 16 self-cap and 24 mutual-cap electrodes; hardware-accelerated scan with spread spectrum and auto-tuning |
| Power Consumption | 135 µA/MHz active; <5 µA standby (wake-on-touch, 4 sensors); 37 nA LPM4.5 shutdown |
| Supply Voltage | 1.8 V to 3.6 V; SVS-enabled brown-out detection prevents erratic operation during battery sag |
| Package | 32-pin VQFN (RHB), 5 mm × 5 mm, 0.5 mm pitch - suitable for compact consumer HMI modules |
| Clock System | On-chip 16-MHz DCO with FLL ±1% accuracy; 32-kHz REFO (1 µA); external LFXT support |
Pinout & Package
32-pin VQFN (RHB) package, 5 mm × 5 mm body, 0.5 mm pitch, exposed thermal pad. Pin functions validated per TI SLASEO5D Rev. D Figure 7-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire data | Single-pin debug and reset interface; enables in-system programming without dedicated JTAG pins |
| TEST/SBWTCK | Spy-Bi-Wire clock | Two-wire debug clock input; reduces test point count and PCB real estate vs. 4-pin JTAG |
| P1.0–P1.7 | General-purpose I/O with multiple peripheral functions | Configurable as CapTIvate electrodes (CAP0.x/CAP1.x), UART, SPI, or analog inputs; all support wake-from-LPM |
| P2.0/P2.1 | LFXT crystal oscillator terminals | Supports external 32.768 kHz crystal for RTC accuracy; optional internal REFO fallback |
| VREG | CapTIvate regulator decoupling node | Requires 1 µF capacitor (≤200 mΩ ESR) to stabilize internal touch sensing voltage reference |
| DVCC/DVSS | Main digital power pair | Separate from analog supply; requires 4.7–10 µF bulk + 0.1 µF ceramic decoupling per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| CapTIvate™ hardware engine | Enables simultaneous multi-electrode scanning with built-in noise filtering, debouncing, and automatic tuning-eliminates need for external touch controller IC |
| FRAM memory | Provides true nonvolatile storage with 1015 write cycles and radiation tolerance-ideal for field-updatable touch profiles and calibration logs |
| Wake-on-touch state machine | Performs full capacitive measurement and threshold detection autonomously while CPU remains in LPM3/LPM4, reducing average system power by >99% during idle |
| IEC-compliant noise immunity | Validated for 10-V RMS common-mode noise, 4-kV EFT, and 15-kV ESD-meets IEC-61000-4-2/4-4/4-6 without external shielding or filtering components |
| Capacitance range | Supports electrode capacitances from 0 pF to 300 pF-enables robust design through thick glass, plastic, metal, or wet surfaces |
Applications
| Smart Lock Keypads | Appliance Control Panels |
|---|---|
Use Scenario: Touch keypad on battery-powered electronic door lock requiring reliable operation through metal escutcheon and condensation. IC Role / Device Role / Timing Role: Primary MCU executing secure authentication, motor control, and CapTIvate sensing-all within single chip. Use Value: Hardware-accelerated wake-on-touch draws <0.9 µA/button, extending 2×AA battery life beyond 2 years while rejecting false triggers from moisture or ESD. |
Use Scenario: Wash-resistant HMI on front-loading washing machine with slider for cycle selection and proximity wake. IC Role / Device Role / Timing Role: Standalone touch controller and system manager handling UI logic, buzzer feedback, and communication with main MCU via I²C. Use Value: Integrated CapTIvate engine supports high-resolution 1024-point sliders and water rejection algorithms-no firmware tuning required for wet-finger operation. |
| Garden Tool Controls | Wireless Audio Remotes |
Use Scenario: Cordless power tool with sealed touch buttons for mode selection and speed control exposed to dust, grease, and vibration. IC Role / Device Role / Timing Role: Dedicated HMI processor managing tactile feedback, LED indicators, and low-power sleep/wake transitions. Use Value: 37 nA LPM4.5 shutdown current ensures multi-year shelf life; metal-touch capability allows direct integration behind brushed aluminum housing. |
Use Scenario: Compact Bluetooth speaker remote with multi-touch gesture support and battery indicator. IC Role / Device Role / Timing Role: Self-contained touch interface with UART to host audio SoC and integrated 12-bit ADC for battery voltage monitoring. Use Value: 12-channel ADC enables simultaneous battery sensing and auxiliary analog inputs (e.g., temperature); FRAM stores user gesture preferences nonvolatily across power cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2673TRHB | 16KB FRAM, 4KB RAM, supports 16 self- + 64 mutual-cap electrodes | Higher electrode count and memory for complex sliders or multi-zone proximity detection | Select when design requires >24 mutual-cap electrodes or larger firmware footprint |
| MSP430FR2675TRHA | 32KB FRAM, 6KB RAM, 40-pin VQFN, supports 16 self- + 64 mutual-cap electrodes | Larger package with more GPIOs and ADC channels; higher memory for OTA updates | Choose for designs needing additional serial interfaces or future-proofing with upgradeable firmware |
Compared with MSP430FR2672TRHBT, the MSP430FR2673TRHB offers double the FRAM and RAM while retaining identical 32-pin RHB packaging and CapTIvate feature set-making it a drop-in upgrade for memory-constrained touch applications. The MSP430FR2675TRHA provides greater I/O and memory headroom but requires PCB redesign due to its 40-pin footprint.
Availability
MSP430FR2672TRHBT is available at Aetrix Electronics and suitable for smart lock keypads, white goods control panels, garden tool HMIs, and wireless audio remotes requiring stable component supply throughout production lifecycles.
Supply support for MSP430FR2672TRHBT 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, with leadership in precision analog integration and ultra-low-power design.
The MSP430FR267x product line was engineered specifically for cost-sensitive, battery-operated capacitive touch interfaces-integrating CapTIvate sensing, FRAM, and mixed-signal peripherals into a single die to eliminate external touch controllers and reduce BOM count.
FAQ
What is the maximum number of capacitive touch electrodes supported by the MSP430FR2672TRHBT?
The MSP430FR2672TRHBT supports up to 16 self-capacitive and 24 mutual-capacitive electrodes. This configuration is fixed per the device's CapTIvate hardware allocation and differs from higher-memory variants like the MSP430FR2673TRHB (16 self + 64 mutual). Electrode count is not software-configurable beyond these hardware limits.
Does the MSP430FR2672TRHBT include an integrated hardware CRC module?
Yes, the MSP430FR2672TRHBT includes a dedicated 16-bit cyclic redundancy check (CRC) module. It operates independently of the CPU and can compute CRC over memory ranges-including FRAM segments used for touch profile storage-to ensure data integrity during power-loss events or field updates.
What is the minimum supply voltage for reliable operation of the MSP430FR2672TRHBT?
The MSP430FR2672TRHBT operates reliably from 1.8 V to 3.6 V. The lower limit is constrained by the Supply Voltage Supervisor (SVS) thresholds-not by core logic. At 1.8 V, the device maintains full functionality including CapTIvate sensing, FRAM access, and real-time clock operation, as verified in TI's SLASEO5D characterization data.
Can the MSP430FR2672TRHBT drive a segment LCD directly?
No, the MSP430FR2672TRHBT does not include an integrated LCD controller or bias voltage generator. Unlike some other MSP430FR2xx variants (e.g., MSP430FR2476), this device lacks LCD_COM and LCD_SEG pins. Display interfacing requires external driver ICs or transition to an LCD-capable variant.
Is the CapTIvate Design Center software compatible with the MSP430FR2672TRHBT?
Yes, the CapTIvate Design Center PC GUI fully supports the MSP430FR2672TRHBT. It enables real-time tuning of touch parameters-including electrode sensitivity, baseline update rate, and noise filter settings-without modifying firmware. The tool communicates via Spy-Bi-Wire using the onboard ROM bootloader.
MSP430FR2672TRHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- 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:
- 27
- Program Memory Size:
- 8.5KB (8.5K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2672TRHBT FAQ
1.How can I place an order for MSP430FR2672TRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2672TRHBT 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 MSP430FR2672TRHBT reliable?
The price and inventory of MSP430FR2672TRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2672TRHBT is usually 5 days.
3.What payment methods are accepted for MSP430FR2672TRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2672TRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2672TRHBT?
MSP430FR2672TRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2672TRHBT 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 MSP430FR2672TRHBT?
For technical support, including MSP430FR2672TRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2672TRHBT requirements.
6.How does Aetrix verify that MSP430FR2672TRHBT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2672TRHBT 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 MSP430FR2672TRHBT meets industry standards.
7.What is the process for return or replacement of MSP430FR2672TRHBT?
All MSP430FR2672TRHBT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2672TRHBT, 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 MSP430FR2672TRHBT part is unused and in its original packaging.
Return procedure for MSP430FR2672TRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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