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Texas Instruments MSP430FR2676TRHAR
- Part No.:
- MSP430FR2676TRHAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2676TRHAR.pdf
- Description:
- IC MCU 16BIT 64.5KB FRAM 40VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430FR2676TRHAR from Texas Instruments is a capacitive-touch-optimized 16-bit RISC microcontroller featuring CapTIvate™ technology, 64KB FRAM, 8KB RAM, and support for up to 16 self-capacitive and 64 mutual-capacitive electrodes. It operates from 1.8 V to 3.6 V, achieves <0.9 µA/button in wake-on-touch mode, and delivers IEC‑61000-4-2/4-4/6 compliance for touch interfaces in harsh environments.
For engineers reviewing the MSP430FR2676TRHAR datasheet, MSP430FR2676TRHAR pinout, MSP430FR2676TRHAR application, or MSP430FR2676TRHAR equivalent, this page provides verified technical context, package-specific pin mapping (40-pin VQFN-RHA), low-power timing architecture, and validated alternative options for touch-sensing MCU selection.
Technical Context
The MSP430FR2676TRHAR integrates a dedicated hardware-accelerated CapTIvate module with four simultaneous electrode scans, spread-spectrum modulation, automatic tuning, and built-in debouncing-enabling reliable proximity and slider operation under 10-V RMS common-mode noise. Its clock system combines a 16-MHz DCO with FLL, 32-kHz REFO, and external LFXT support, all managed via programmable prescalers.
It features dual eUSCI_A (UART/IrDA/SPI) and dual eUSCI_B (SPI/I²C) peripherals with pin remap capability, a 12-bit ADC with 10 input channels, an enhanced comparator with integrated 6-bit DAC reference, and Timer_B7 with seven capture/compare registers-all operating within ultra-low-power LPM3.5 while CapTIvate remains active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables high code efficiency for real-time touch processing. |
| Memory | 64KB + 512B FRAM (nonvolatile, 10¹⁵ write cycles, ECC-protected) and 8KB RAM; unified memory simplifies firmware updates and data logging. |
| Capacitive Sensing | Supports 16 self-cap and 64 mutual-cap electrodes; enables mixed-mode sliders, wheels, and proximity sensing on single PCB layout. |
| Power Consumption | <0.9 µA/button in wake-on-touch mode; hardware state machine performs scanning while CPU sleeps, minimizing active time. |
| ADC | 12-bit SAR ADC with 10 input channels, 200 ksps sample-and-hold, and internal 1.5/2.0/2.5 V references; suitable for analog sensor integration alongside touch. |
| Package | 40-pin VQFN (RHA), 6 mm × 6 mm, 0.5 mm pitch; optimized for compact HMI designs with thermal pad for dissipation. |
| Operating Voltage | 1.8 V to 3.6 V; supports direct battery operation (e.g., two AA/AAA) without external regulators in many applications. |
| ESD/EMI Robustness | IEC‑61000-4-2 (±15 kV contact), -4-4 (4 kV EFT), -4-6 (10 V RMS RF immunity); enables certified front-panel designs without shielding layers. |
Pinout & Package
40-pin VQFN (RHA) package with exposed thermal pad; 35 GPIOs, all interrupt-capable for wake-from-LPM; dedicated CapTIvate pins (CAP0.x–CAP3.x) mapped across P2–P4 and P6; VREG pin supplies internal touch regulator (1 µF decoupling required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire data | Primary debug and programming interface; dual-function pin enables in-system programming without dedicated JTAG header. |
| TEST/SBWTCK | Spy-Bi-Wire clock | Enables low-pin-count debugging and firmware updates using TI's standard 2-wire protocol. |
| VREG | CapTIvate regulator output | Supplies regulated voltage to CapTIvate sensing circuitry; requires 1 µF decoupling capacitor with ≤200 mΩ ESR. |
| P3.7–P4.2 | CAP2.0–CAP2.3 | Dedicated mutual-capacitance electrode channels for second sensor group; supports high-resolution sliders up to 1024 points. |
| P2.7, P3.5–P3.6 | CAP3.0–CAP3.3 | Four-channel mutual-capacitance bank for third sensor zone; enables multi-zone panel layouts with independent calibration. |
| P3.0–P3.4, P2.3–P2.6 | CAP0.0–CAP0.3, CAP1.0–CAP1.3 | Eight self-capacitance inputs across two banks; supports button arrays and proximity wake-up with metal-over-glass capability. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-accelerated CapTIvate engine | Performs electrode scanning, noise filtering, and threshold detection autonomously-reducing CPU load and enabling sub-µA wake-on-touch operation. |
| Unified FRAM memory architecture | Eliminates separate program/data/EEPROM memory spaces; allows atomic firmware updates and robust event logging without wear leveling overhead. |
| Programmable pin remap for eUSCI | Enables flexible PCB routing by assigning UART/I²C/SPI functions to alternate GPIOs-critical for dense touch-control board layouts. |
| Integrated 6-bit DAC for eCOMP reference | Provides precise, software-tunable voltage reference for analog comparators-supporting adaptive thresholding in variable environmental conditions. |
| LPM3.5 domain isolation | Allows CapTIvate module to remain fully operational while CPU, flash, and most peripherals are powered down-extending battery life in always-on HMIs. |
Applications
| Appliance Control Panel | Smart Lock Keypad |
|---|---|
Use Scenario: Glass-front oven or washer control with sealed, waterproof touch interface requiring operation under moisture and grease. IC Role / Device Role / Timing Role: Primary MCU executing CapTIvate scan, managing display backlight, and communicating via I²C to system controller. Use Value: Achieves IEC‑61000-4-2 (15 kV ESD) and water rejection without overlay sensors-reducing BOM cost and mechanical complexity. | Use Scenario: Battery-powered electronic door lock with wake-on-proximity and secure keypad entry. IC Role / Device Role / Timing Role: Standalone touch processor handling authentication logic, low-power wake detection, and encrypted BLE communication handoff. Use Value: Delivers <0.9 µA/button standby current and metal-touch capability-enabling 2+ year battery life with AAA cells. |
| Garage Door Controller | Wireless Speaker Touchpad |
Use Scenario: Outdoor-rated wall-mounted controller exposed to temperature extremes, dust, and EMI from motor drive circuits. IC Role / Device Role / Timing Role: Dedicated touch interface MCU interfacing with main controller via UART; handles debounce, noise rejection, and LED feedback. Use Value: Meets IEC‑61000-4-4 (4 kV EFT) and -4-6 (10 V RMS RF immunity)-ensuring reliable operation near switching power electronics. | Use Scenario: Compact portable speaker with gesture-enabled top-panel controls operating under audio-frequency vibration and RF interference. IC Role / Device Role / Timing Role: Real-time touch coordinator managing slider volume, play/pause, and multi-touch gestures while coexisting with Bluetooth stack. Use Value: Supports concurrent self- and mutual-capacitance electrodes-enabling smooth slider response and accidental-touch rejection in dynamic acoustic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch sensing microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2675TRHAR | 32KB + 512B FRAM, 6KB RAM, identical CapTIvate peripheral and pinout; lower memory reduces firmware footprint. | Same 40-pin VQFN package and sensor count; suited for cost-sensitive designs with simpler UI logic or smaller code base. | Select when application firmware fits within 32KB FRAM and no runtime data logging beyond 6KB RAM is required. |
| MSP430FR2633IRHAR | 16KB + 512B FRAM, 2KB RAM, same CapTIvate engine but only 16 mutual-cap electrodes; 40-pin VQFN pin-compatible. | Targeted at basic button-only interfaces; lacks support for high-resolution sliders or multi-zone proximity sensing. | Choose for entry-level touch panels where electrode count and memory requirements are significantly lower. |
Compared with MSP430FR2675TRHAR and MSP430FR2633IRHAR, the MSP430FR2676TRHAR provides highest memory headroom and full 64-mutual-capacitance channel support-making it optimal for complex, field-upgradable touch HMIs requiring local data buffering and advanced gesture algorithms.
Availability
MSP430FR2676TRHAR is available at Aetrix Electronics and suitable for appliance control panels, smart lock keypads, and garage door systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial OEM programs.
Supply support for MSP430FR2676TRHAR 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 reliability, energy efficiency, and system-level integration.
The MSP430FR267x product line was designed specifically for ultra-low-power capacitive touch human-machine interfaces-integrating autonomous sensing, FRAM nonvolatility, and robust noise immunity into a single-chip solution for consumer and industrial HMIs.
FAQ
What is the maximum number of capacitive touch electrodes supported by the MSP430FR2676TRHAR?
The MSP430FR2676TRHAR supports up to 16 self-capacitive and 64 mutual-capacitive electrodes simultaneously. This capability is enabled by its dedicated CapTIvate hardware engine and is confirmed in the device comparison table for the RHA package variant. The electrode count is independent of package size and applies specifically to the MSP430FR2676TRHAR, not lower-memory variants like the MSP430FR2675TRHAR.
Does the MSP430FR2676TRHAR include hardware-based wake-on-touch functionality?
Yes, the MSP430FR2676TRHAR includes a dedicated hardware state machine for wake-on-touch that operates independently of the CPU. In standby mode (LPM3), it achieves <0.9 µA per button while performing electrode scanning, noise filtering, and threshold detection-allowing the main CPU to remain fully asleep until a valid touch event occurs.
What package type and pin count does the MSP430FR2676TRHAR use?
The MSP430FR2676TRHAR uses a 40-pin VQFN package (RHA), measuring 6 mm × 6 mm with 0.5 mm pitch and an exposed thermal pad. This package provides 35 GPIOs, all interrupt-capable, and maps CapTIvate channels across P2–P4 and P6 pins-matching the pinout shown in Figure 7-2 of the official datasheet SLASEO5D.
Can the MSP430FR2676TRHAR operate with a 32-kHz external crystal?
Yes, the MSP430FR2676TRHAR supports an external 32-kHz crystal oscillator (LFXT) connected to XIN/XOUT pins (P2.0/P2.1). This configuration provides high-accuracy real-time clock operation and is explicitly listed in the clock system section of the datasheet, alongside internal REFO and DCO options.
What development tools are officially supported for the MSP430FR2676TRHAR?
Texas Instruments officially supports the MSP-CAPT-FR2633 CapTIvate Technology Development Kit and the CAPTIVATE‑FR2676 evaluation board for the MSP430FR2676TRHAR. These platforms integrate with the CapTIvate Design Center GUI and MSP430Ware™ software libraries-including ROM-resident CapTIvate drivers-to enable real-time tuning and rapid prototyping without custom firmware development.
MSP430FR2676TRHAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 40-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:
- 35
- Program Memory Size:
- 64.5KB (64.5K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 10x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2676TRHAR FAQ
1.How can I place an order for MSP430FR2676TRHAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2676TRHAR 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 MSP430FR2676TRHAR reliable?
The price and inventory of MSP430FR2676TRHAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2676TRHAR is usually 5 days.
3.What payment methods are accepted for MSP430FR2676TRHAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2676TRHAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2676TRHAR?
MSP430FR2676TRHAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2676TRHAR 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 MSP430FR2676TRHAR?
For technical support, including MSP430FR2676TRHAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2676TRHAR requirements.
6.How does Aetrix verify that MSP430FR2676TRHAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR2676TRHAR 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 MSP430FR2676TRHAR meets industry standards.
7.What is the process for return or replacement of MSP430FR2676TRHAR?
All MSP430FR2676TRHAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2676TRHAR, 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 MSP430FR2676TRHAR part is unused and in its original packaging.
Return procedure for MSP430FR2676TRHAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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