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Texas Instruments MSP430FR2633IRHBT
- Part No.:
- MSP430FR2633IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2633IRHBT.pdf
- Description:
- IC MCU 16BIT 15.5KB FRAM 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:549
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Product details
Overview
MSP430FR2633IRHBT from Texas Instruments is a capacitive touch-sensing mixed-signal microcontroller featuring CapTIvate™ technology, 16-bit RISC CPU, 15.5 KB FRAM (15 KB program + 512 B info), 4 KB RAM, and support for up to 16 self- or 64 mutual-capacitance electrodes. It operates from 1.8 V to 3.6 V and delivers <5 µA wake-on-touch current with four active sensors in ultra-low-power standby mode - ideal for battery-powered HMI interfaces in smart locks and appliance control panels.
For engineers reviewing the MSP430FR2633IRHBT datasheet, MSP430FR2633IRHBT pinout, MSP430FR2633IRHBT application, or MSP430FR2633IRHBT equivalent, key selection criteria include its integrated CapTIvate hardware accelerator, LPM3.5 RTC operation at 730 nA, 10-bit ADC with 200 ksps sampling, dual eUSCI_A (UART/SPI/IrDA) and eUSCI_B (I²C/SPI), and TSSOP-32 package compatibility with industrial-grade noise immunity per IEC‑61000-4-2/4-4/4-6.
Technical Context
The MSP430FR2633IRHBT integrates a dedicated CapTIvate peripheral with hardware-accelerated electrode scanning, spread-spectrum modulation, automatic tuning, and noise filtering - enabling concurrent self- and mutual-capacitance sensing without CPU intervention. Its clock system combines a 16-MHz DCO with FLL, 32-kHz REFO, VLO, MODOSC, and external LFXT support, with programmable MCLK/SMCLK prescalers for precise timing control across power modes.
It features two Timer_A3 modules (each with three capture/compare registers), two Timer_A2 modules (each with two registers), and a separate 16-bit CapTIvate timer. The device supports full interrupt-driven I/O on P1/P2 (16 pins), real-time CRC16 computation, and 32-byte backup memory retained in LPM4.5 (16 nA shutdown).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers, supporting up to 16 MHz operation |
| Memory Configuration | 15.5 KB FRAM (15 KB program + 512 B info), 4 KB SRAM, unified memory architecture with ECC and write protection |
| Capacitive Sensing | Up to 16 self-capacitance or 64 mutual-capacitance electrodes; hardware-accelerated scanning with built-in debouncing and spread spectrum |
| Power Consumption | Standby: <5 µA (wake-on-touch, 4 sensors); LPM3.5 (RTC + 32.768 kHz crystal): 730 nA; LPM4.5 (shutdown): 16 nA |
| Analog Peripherals | 8-channel 10-bit SAR ADC with internal 1.5-V reference, 200 ksps sample rate, and programmable input multiplexing |
| Digital Interfaces | Two eUSCI_A modules (UART/IrDA/SPI), one eUSCI_B module (I²C/SPI), JTAG/Spy-Bi-Wire debug support |
| Package & Pins | TSSOP-32 (DA package), 19 GPIOs total, 16 interrupt-capable pins on P1/P2, thermal pad not present |
Pinout & Package
VQFN (RHB) and TSSOP (DA) packages are both offered for the MSP430FR2633 family; the suffix "IRHBT" explicitly denotes the TSSOP-32 (DA) variant per TI's device nomenclature. This 32-pin thin shrink small-outline package measures 11 mm × 6.2 mm with 0.65 mm lead pitch and no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire data I/O | Active-low reset input; dual-function pin for NMI and SBW programming/debug interface |
| TEST/SBWTCK | Spy-Bi-Wire test clock | Required for SBW programming and boundary-scan testing; must be pulled high during normal operation |
| P1.4–P1.7 | Multi-function I/O (UCA0TXD/RXD/CLK/STE, TA1.x, TCK/TMS/TDI/TDO, A4–A7) | Configurable for UART, SPI, JTAG, timer capture/compare, or analog inputs - shared functions require careful pinmux configuration |
| P2.0–P2.7 | CapTIvate electrode I/O or GPIO | Supports self-capacitance (CSD) or mutual-capacitance (CSM) sensing; each pin can serve as TX or RX electrode in CSM mode |
| P3.0–P3.2 | General-purpose I/O or ADC inputs | Three additional GPIOs; P3.0–P3.2 map to ADCIN0–ADCIN2 for analog sensing when enabled |
| DVCC / DVSS | Main digital/analog power pair | Single 1.8–3.6 V supply rail; requires 4.7–10 µF bulk + 0.1 µF ceramic decoupling per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| CapTIvate™ hardware engine | Enables autonomous electrode scanning, spread-spectrum modulation, and real-time noise rejection - eliminates need for external touch controller or firmware-based filtering |
| FRAM memory architecture | 15.5 KB nonvolatile memory with 10¹⁵ write endurance, ECC protection, and unified code/data storage - reduces EEPROM/flash wear-out concerns in frequent-update HMI applications |
| LPM3.5 RTC mode | Real-time clock operation at 730 nA using external 32.768 kHz crystal - enables calendar/timekeeping with minimal battery drain in always-on touch interfaces |
| IEC-compliant noise immunity | Validated to withstand 10 V RMS common-mode noise, 4 kV EFT (IEC‑61000-4-4), and 15 kV ESD (IEC‑61000-4-2) - simplifies EMC design for consumer and industrial enclosures |
| Capacitance range flexibility | Supports electrode capacitances from 0 pF to 300 pF - accommodates thick glass, metal-over-glass, and wet-surface designs without hardware redesign |
Applications
| Smart Lock Keypads | Garage Door Control Panels |
|---|---|
Use Scenario: Touch keypad on outdoor-rated smart lock housing, operating under rain, dust, and temperature extremes. IC Role / Device Role / Timing Role: Primary MCU executing CapTIvate sensing, secure authentication logic, and low-power wireless communication handshaking. Use Value: Hardware-accelerated proximity detection and water rejection enable reliable activation before physical contact; <5 µA wake-on-touch extends coin-cell life beyond 2 years. |
Use Scenario: Wall-mounted HMI panel for garage door openers with backlight, status LEDs, and multi-button layout. IC Role / Device Role / Timing Role: Standalone touch controller managing button press detection, LED feedback timing, and serial command transmission to motor driver. Use Value: Concurrent self/mutual-capacitance support allows slider + discrete buttons on same PCB; 16 nA LPM4.5 shutdown minimizes standby leakage in unattended installations. |
| Motorized Window Blind Controllers | Wireless Speaker Touch Surfaces |
Use Scenario: Compact, battery-powered blind controller with slider for position adjustment and tap-to-stop functionality. IC Role / Device Role / Timing Role: Real-time CapTIvate slider processing with 1024-point resolution, coupled with PWM motor control and BLE subsystem wake coordination. Use Value: High-resolution slider operation at 730 nA LPM3.5 RTC mode enables precise positioning while preserving battery charge between user interactions. |
Use Scenario: Premium Bluetooth speaker with glass-top capacitive controls for volume, play/pause, and source selection. IC Role / Device Role / Timing Role: Dedicated touch sensor MCU interfacing via I²C to main audio SoC, handling gesture recognition and haptic feedback timing. Use Value: Metal-touch capability allows integration behind brushed aluminum bezels; built-in spread spectrum reduces RF emissions that could interfere with 2.4 GHz audio streaming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2533IRHBT | Same 32-pin TSSOP package and CapTIvate engine, but only 2 KB RAM and supports max 24 mutual-capacitance electrodes | Lower electrode count and RAM limit suitability to simpler UIs (e.g., 4-button remotes vs. full sliders) | Select when cost-sensitive designs require fewer sensors and no background RTC logging |
| MSP430FR2632IRHBT | Same package and CapTIvate IP, but reduced 8 KB FRAM, 2 KB RAM, and support for only 8 self- or 16 mutual-capacitance electrodes | Targeted at entry-level touch applications where memory footprint and sensor count are constrained | Choose for space-constrained, low-feature HMI where full MSP430FR2633IRHBT capability is unnecessary |
Compared with MSP430FR2633IRHBT, the MSP430FR2533IRHBT offers identical package and toolchain compatibility but trades RAM and mutual-capacitance channel count for lower BOM cost, while MSP430FR2632IRHBT further reduces FRAM and electrode capacity - making both viable alternatives only when application scope aligns precisely with their reduced specifications.
Availability
MSP430FR2633IRHBT is available at Aetrix Electronics and suitable for smart lock keypads, garage door control panels, and motorized window blind controllers requiring stable component supply, long-lifecycle assurance, and TI-qualified production traceability.
Supply support for MSP430FR2633IRHBT 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 integration.
The MSP430FR2633IRHBT belongs to TI's ultra-low-power FRAM microcontroller product line, engineered specifically for robust, battery-efficient capacitive touch human-machine interfaces in consumer, industrial, and building automation systems.
FAQ
What is the maximum number of capacitive touch electrodes supported by the MSP430FR2633IRHBT?
The MSP430FR2633IRHBT supports up to 16 self-capacitance electrodes or 64 mutual-capacitance electrodes. This capability is enabled by its integrated CapTIvate™ peripheral with hardware-accelerated scanning logic. Electrode count is configurable in firmware via the CapTIvate Design Center GUI, and the MSP430FR2633IRHBT's 19 GPIOs allow flexible allocation between sensing and general-purpose use - all without requiring external components or additional ICs.
Does the MSP430FR2633IRHBT support operation with a 32.768 kHz external crystal?
Yes, the MSP430FR2633IRHBT supports an external 32.768 kHz crystal oscillator (LFXT) for precision real-time clock operation. When configured in LPM3.5 mode, the device achieves 730 nA typical current consumption while maintaining accurate timekeeping - critical for battery-powered applications like smart locks and remote controls. The LFXT circuit requires two external load capacitors (typically 12.5 pF) and is validated per TI's SLAS942E specification.
What package type does the 'IRHBT' suffix indicate for the MSP430FR2633IRHBT?
The 'IRHBT' suffix identifies the MSP430FR2633IRHBT as the 32-pin TSSOP (Thin Shrink Small Outline Package) variant, also designated 'DA' in TI documentation. It measures 11 mm × 6.2 mm with 0.65 mm lead pitch and contains no exposed thermal pad. This package is pin-compatible with other MSP430FR263x/FR253x devices in the same footprint, enabling scalable design reuse across performance tiers.
How does the MSP430FR2633IRHBT achieve IEC‑61000-4-2 compliance?
The MSP430FR2633IRHBT achieves IEC‑61000-4-2 compliance (15 kV air/8 kV contact discharge) through on-die CapTIvate-specific circuitry including built-in spread spectrum, automatic tuning, and hardware noise filtering. These features are validated in TI's characterization labs and documented in SLAS942E - enabling robust touch operation in harsh environments without requiring external TVS diodes or shielding layers in most standard enclosure designs.
Can the MSP430FR2633IRHBT operate from a single 1.8 V supply?
Yes, the MSP430FR2633IRHBT operates across a supply voltage range of 1.8 V to 3.6 V. At 1.8 V, it maintains full functionality including CapTIvate sensing, 10-bit ADC operation, and FRAM read/write - though maximum CPU frequency is limited to 8 MHz per the SVS level constraints specified in SLAS942E. This wide voltage range supports direct connection to lithium coin cells or regulated low-voltage rails in portable HMI designs.
MSP430FR2633IRHBT 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:
- 19
- 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:
MSP430FR2633IRHBT FAQ
1.How can I place an order for MSP430FR2633IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2633IRHBT 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 MSP430FR2633IRHBT reliable?
The price and inventory of MSP430FR2633IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2633IRHBT is usually 5 days.
3.What payment methods are accepted for MSP430FR2633IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2633IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2633IRHBT?
MSP430FR2633IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2633IRHBT 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 MSP430FR2633IRHBT?
For technical support, including MSP430FR2633IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2633IRHBT requirements.
6.How does Aetrix verify that MSP430FR2633IRHBT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2633IRHBT 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 MSP430FR2633IRHBT meets industry standards.
7.What is the process for return or replacement of MSP430FR2633IRHBT?
All MSP430FR2633IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2633IRHBT, 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 MSP430FR2633IRHBT part is unused and in its original packaging.
Return procedure for MSP430FR2633IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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