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Texas Instruments MSP430FR2633IYQWT
- Part No.:
- MSP430FR2633IYQWT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 24-UFBGA, DSBGA
- Datasheet:
-
MSP430FR2633IYQWT.pdf
- Description:
- IC MCU 16BIT 15.5KB FRAM 24DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:156
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Product details
Overview
MSP430FR2633IYQWT from Texas Instruments is an ultra-low-power mixed-signal microcontroller with integrated CapTIvate™ capacitive touch sensing, 16-bit RISC CPU, 15.5 KB FRAM, 4 KB RAM, and support for up to 16 self- or 64 mutual-capacitance electrodes - designed for battery-powered HMI applications including smart locks and appliance control panels.
For engineers reviewing the MSP430FR2633IYQWT datasheet, MSP430FR2633IYQWT pinout, MSP430FR2633IYQWT application, or MSP430FR2633IYQWT equivalent, key selection considerations include its DSBGA-24 package, <5 µA wake-on-touch current, LPM3.5 RTC operation at 730 nA, 10-bit ADC with 200 ksps sampling, and hardware-accelerated CapTIvate engine enabling metal/water-tolerant touch interfaces.
Technical Context
The MSP430FR2633IYQWT integrates a dedicated CapTIvate peripheral with spread spectrum modulation, automatic tuning, and noise filtering algorithms - enabling reliable electrode scanning under 10-V RMS common-mode noise and 4-kV EFT per IEC‑61000-4-4. Its clock system combines a 16-MHz DCO with FLL, 32-kHz REFO, and external LFXT support for precise timing in low-power modes.
It features two eUSCI_A modules (UART/IrDA/SPI) and one eUSCI_B (SPI/I²C), four 16-bit timers (including Timer_A3 with three capture/compare registers), and a CRC16 engine. The device operates across 1.8–3.6 V and supports concurrent self- and mutual-capacitance sensing on shared GPIOs without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers, enabling deterministic real-time execution of touch firmware and sensor processing. |
| FRAM Capacity | 15.5 KB (15360 + 512 B) unified nonvolatile memory with 1015 write endurance - eliminates flash wear-out concerns in frequent configuration updates. |
| Capacitive Sensing | Up to 16 self-capacitance or 64 mutual-capacitance electrodes, supporting sliders with up to 1024 resolution points and proximity detection. |
| Low-Power Performance | Standby wake-on-touch: <5 µA (4 sensors); LPM3.5 RTC mode: 730 nA (32.768 kHz crystal); LPM4.5 shutdown: 16 nA - extends coin-cell battery life to years. |
| Analog Peripherals | 8-channel 10-bit SAR ADC with internal 1.5-V reference and 200 ksps sample rate - suitable for auxiliary analog sensing alongside touch. |
| Digital Interfaces | Two eUSCI_A (UART/IrDA/SPI) and one eUSCI_B (SPI/I²C) - enables dual communication paths for host MCU interfacing and debug telemetry. |
| GPIO Count | 17 programmable I/O pins in DSBGA-24 package, with 16 interrupt-capable pins (P1/P2) for fast wake-from-sleep response. |
Pinout & Package
Package: DSBGA-24 (YQW), 2.29 mm × 2.34 mm, 0.4-mm pitch, bottom-side thermal pad (no electrical connection). Designed for space-constrained consumer and industrial HMI modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire data I/O | Single-pin debug and reset interface; enables in-system programming and low-pin-count development. |
| TEST/SBWTCK | Spy-Bi-Wire clock | Provides synchronous clock for SBW debugging; shares pin with TEST function for production test access. |
| P1.4/UCA0TXD/TA1.2/TCK/A4/VREF+ | Multi-function GPIO | Configurable as UART TX, timer capture/compare, JTAG TCK, or ADC reference voltage - supports flexible HMI signal routing. |
| P1.5/UCA0RXD/TA1.1/TMS/A5 | Multi-function GPIO | Supports UART RX, timer input, JTAG TMS, or ADC input - enables simultaneous touch sensing and serial communication. |
| P1.6/UCA0CLK/TA1CLK/TDI/TCLK/A6 | Multi-function GPIO | Provides UART clock, timer clock source, JTAG TDI, or ADC input - critical for synchronized CapTIvate scanning and host sync. |
| P1.7/UCA0STE/SMCLK/TDO/A7 | Multi-function GPIO | Enables SPI slave select, system clock output, JTAG TDO, or ADC input - simplifies integration with external peripherals. |
| P2.0–P2.7 | Capacitive touch I/O | Eight dedicated CapTIvate channels with built-in charge-transfer circuitry - no external RC networks required for baseline operation. |
| P3.0–P3.2 | General-purpose I/O | Three additional GPIOs with interrupt capability - used for status LEDs, mechanical switches, or auxiliary sensors. |
Key Features
| Feature | Design Value |
|---|---|
| CapTIvate™ Touch Engine | Hardware-accelerated capacitive sensing with automatic calibration, spread-spectrum excitation, and noise rejection - achieves IEC‑61000-4-2 (15-kV ESD), -4-4 (4-kV EFT), and -4-6 (10-V RMS RF immunity). |
| FRAM Memory Architecture | Unified 15.5 KB nonvolatile memory with ECC, configurable write protection, and 1015 write cycles - enables robust firmware updates and parameter storage without flash erase delays. |
| Ultra-Low-Power Modes | LPM3.5 RTC operation at 730 nA and LPM4.5 shutdown at 16 nA - supports always-on touch wake-up with multi-year battery life in coin-cell designs. |
| Integrated Clock System | On-chip 16-MHz DCO with FLL, ±1% accuracy at room temperature, plus 32-kHz REFO and external LFXT support - eliminates need for multiple crystals in compact HMI systems. |
| Capacitance Range Support | 0–300 pF electrode capacitance range with automatic gain adjustment - accommodates diverse overlay materials (glass, plastic, metal) and environmental conditions (wet, greasy). |
Applications
| Smart Lock Keypads | Appliance Control Panels |
|---|---|
Use Scenario: Touch-based entry system on residential/commercial door locks with metal or glass overlays and exposure to moisture and temperature extremes. IC Role / Device Role / Timing Role: Primary capacitive touch controller executing real-time electrode scanning, proximity wake-up, and secure button validation before unlocking. Use Value: Enables reliable operation through 3-mm thick stainless steel or tempered glass with water rejection - meeting UL 2017 and EN 1303 requirements without mechanical buttons. |
Use Scenario: User interface for refrigerators, dishwashers, and washing machines requiring wash-resistant, glove-friendly controls in humid kitchen environments. IC Role / Device Role / Timing Role: Standalone HMI processor handling slider-based temperature adjustment, multi-button mode selection, and LED feedback via integrated GPIOs. Use Value: Delivers <5 µA wake-on-touch current and metal-touch capability - allowing continuous sensing while maintaining >5-year battery backup during power outages. |
| Garage Door Controllers | Wireless Audio Remotes |
Use Scenario: Compact, battery-powered remote with proximity wake-up and multi-button command transmission over sub-GHz RF link. IC Role / Device Role / Timing Role: Low-power touch coordinator managing button press detection, debouncing, and wake-up signaling to RF SoC via GPIO or UART. Use Value: Achieves 16 nA LPM4.5 shutdown and hardware-accelerated CapTIvate scanning - extending CR2032 battery life beyond 36 months with daily use. |
Use Scenario: Premium Bluetooth speaker remote with gesture-enabled sliders and tactile-free volume control under wet/finger-grease conditions. IC Role / Device Role / Timing Role: Dedicated capacitive interface IC performing high-resolution slider interpolation and proximity-triggered backlight activation. Use Value: Supports 1024-point slider resolution and water rejection algorithms - enabling smooth audio control even with damp fingers or condensation on surface. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2633IRHB | VQFN-32 package (5 mm × 5 mm), 19 GPIOs, includes P3.x and additional CapTIvate channels - larger footprint but higher I/O count and thermal dissipation. | Better suited for designs requiring >17 I/Os or board-level thermal management; not pin-compatible with YQW due to different pin count and layout. | Select IRHB when PCB space allows and additional GPIOs or enhanced thermal performance are needed for complex HMI layouts. |
| MSP430FR2533IYQW | Same DSBGA-24 package and pinout, but limited to 24 mutual-capacitance electrodes and 2 KB RAM - reduced CapTIvate channel count and memory headroom. | Targeted at cost-sensitive, lower-complexity touch interfaces (e.g., 4-button remotes) where full 64-electrode capability is unnecessary. | Choose IYQW variant only if design uses ≤24 mutual-capacitance sensors and does not require advanced slider/proximity features enabled by FR2633's full engine. |
Compared with MSP430FR2633IRHB, the MSP430FR2633IYQWT offers identical core functionality in a 40% smaller footprint but trades 2 GPIOs and thermal margin for miniaturization; versus MSP430FR2533IYQW, it delivers double the mutual-capacitance channel count and 2× RAM - enabling richer UIs with multitouch sliders and local firmware logic.
Availability
MSP430FR2633IYQWT is available at Aetrix Electronics and suitable for smart lock keypads, appliance control panels, garage door controllers, and wireless audio remotes requiring stable component supply and long-term manufacturability.
Supply support for MSP430FR2633IYQWT 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 microcontrollers and precision analog solutions.
The MSP430FR2633IYQWT belongs to TI's CapTIvate™-enabled FRAM MCU family, engineered specifically for ultra-low-power, noise-immune capacitive touch interfaces in consumer, industrial, and security applications where reliability and battery longevity are critical.
FAQ
What is the primary function of the MSP430FR2633IYQWT in an HMI system?
The MSP430FR2633IYQWT serves as a dedicated capacitive touch controller and system manager in human-machine interface applications. It executes real-time electrode scanning, proximity detection, noise filtering, and wake-on-touch state machine operations - all while consuming <5 µA in standby. Its integrated CapTIvate™ engine offloads touch processing from the main application MCU, making the MSP430FR2633IYQWT ideal for battery-powered smart locks, appliance panels, and remotes where responsiveness and power efficiency are essential.
Does the MSP430FR2633IYQWT support operation through metal overlays?
Yes, the MSP430FR2633IYQWT supports metal touch sensing using mutual-capacitance measurement and proprietary spread-spectrum excitation techniques. Its CapTIvate™ technology enables reliable detection through stainless steel up to 1 mm thick and aluminum up to 0.5 mm - validated per IEC‑61000-4-2 (15-kV ESD) and IEC‑61000-4-4 (4-kV EFT) standards. This capability is confirmed in TI's CapTIvate Technology Guide and demonstrated in reference designs like CAPTIVATE-FR2633.
What are the key power consumption figures for the MSP430FR2633IYQWT in low-power modes?
The MSP430FR2633IYQWT achieves 730 nA typical current in LPM3.5 (RTC active with 32.768-kHz crystal), 16 nA in LPM4.5 (full shutdown), and <5 µA in wake-on-touch standby mode with four sensors active. These values are measured under recommended operating conditions (1.8–3.6 V, 25°C) and published in the SLAS942E datasheet Section 5.8. The ultra-low quiescent current enables multi-year operation on CR2032 batteries in always-on touch applications.
Can the MSP430FR2633IYQWT be programmed and debugged using standard tools?
Yes, the MSP430FR2633IYQWT supports programming and debugging via Spy-Bi-Wire (SBW) using TI's MSP-FET or compatible tools like the CAPTIVATE-PGMR programmer. Its RST/NMI/SBWTDIO and TEST/SBWTCK pins provide a 2-pin debug interface compatible with Code Composer Studio v10+ and IAR Embedded Workbench. No JTAG header is required - simplifying PCB layout and reducing BOM cost for space-constrained designs.
How does the FRAM memory in the MSP430FR2633IYQWT differ from traditional flash in practical use?
The 15.5 KB FRAM in the MSP430FR2633IYQWT provides instant writes (no erase cycle), 1015 write endurance, and unified memory architecture - allowing code, constants, and runtime variables to reside in the same address space. Unlike flash, FRAM supports byte-level writes at full CPU speed and retains data without power. This eliminates wear-leveling overhead and enables robust logging, parameter storage, and over-the-air updates in field-deployed devices - directly improving firmware update reliability and system longevity.
MSP430FR2633IYQWT 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:
MSP430FR2633IYQWT FAQ
1.How can I place an order for MSP430FR2633IYQWT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2633IYQWT 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 MSP430FR2633IYQWT reliable?
The price and inventory of MSP430FR2633IYQWT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2633IYQWT is usually 5 days.
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MSP430FR2633IYQWT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2633IYQWT 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 MSP430FR2633IYQWT?
For technical support, including MSP430FR2633IYQWT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2633IYQWT requirements.
6.How does Aetrix verify that MSP430FR2633IYQWT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2633IYQWT 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 MSP430FR2633IYQWT meets industry standards.
7.What is the process for return or replacement of MSP430FR2633IYQWT?
All MSP430FR2633IYQWT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2633IYQWT, 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 MSP430FR2633IYQWT part is unused and in its original packaging.
Return procedure for MSP430FR2633IYQWT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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