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Texas Instruments MSP430FR2633IDA
- Part No.:
- MSP430FR2633IDA
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR2633IDA.pdf
- Description:
- IC MCU 16BIT 15.5KB FRAM 32SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:225
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Product details
Overview
MSP430FR2633IDA from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller with integrated CapTIvate™ capacitive touch sensing, featuring 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, achieves <5 µA wake-on-touch current with four sensors, and targets HMI applications in harsh environments including wet, greasy, or metal-covered surfaces.
For engineers reviewing the MSP430FR2633IDA datasheet, MSP430FR2633IDA pinout, MSP430FR2633IDA application, or MSP430FR2633IDA equivalent, key selection criteria include its TSSOP-32 package, autonomous CapTIvate hardware engine, LPM3.5 RTC operation at 730 nA, 10-bit 200 ksps ADC, and dual eUSCI_A (UART/SPI/IrDA) + eUSCI_B (I²C/SPI) interfaces.
Technical Context
The MSP430FR2633IDA integrates a dedicated CapTIvate peripheral with hardware-accelerated electrode scanning, spread-spectrum modulation, automatic tuning, and noise filtering - enabling reliable touch detection under 10-V RMS common-mode noise and 4-kV EFT per IEC‑61000-4-4. Its 16-bit RISC CPU runs at up to 16 MHz using an on-chip DCO with ±1% accuracy and supports concurrent self- and mutual-capacitance sensing without CPU intervention.
Power management includes five low-power modes: active mode at 126 µA/MHz, standby with wake-on-touch (<5 µA), LPM3.5 (RTC + 32.768-kHz crystal, 730 nA), and shutdown (LPM4.5, 16 nA). The device uses unified FRAM memory with ECC, 10¹⁵ write endurance, and radiation resistance - eliminating flash programming delays while preserving nonvolatility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 32-bit hardware multiplier |
| Max Clock Frequency | 16 MHz via on-chip DCO with FLL; ±1% accuracy at room temperature |
| FRAM Capacity | 15.5 KB total (15 KB program + 512 B information FRAM); unified memory space for code/data/storage |
| RAM Size | 4 KB SRAM for runtime variables and stack; independent of FRAM access timing |
| Capacitive Sensing | Up to 16 self-capacitance or 64 mutual-capacitance electrodes; hardware-accelerated scan engine |
| ADC | 8-channel, 10-bit SAR ADC with 200 ksps sample rate and internal 1.5-V reference |
| Low-Power Modes | LPM3.5 (RTC active, 730 nA typ), LPM4.5 (shutdown, 16 nA typ), wake-on-touch <5 µA with 4 sensors |
Pinout & Package
TSSOP-32 (DA) package: 11 mm × 6.2 mm body size, 0.65 mm pitch, surface-mount, leaded plastic package with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO | Reset / Non-maskable interrupt / Spy-Bi-Wire test data I/O | Active-low reset input; dual-function NMI source and debug interface pin |
| TEST/SBWTCK | Spy-Bi-Wire test clock | Dedicated debug clock input for programming and emulation; not usable as GPIO |
| P1.0–P1.7 | Port 1 bidirectional I/O | 8 pins with interrupt capability; P1.0–P1.3 support CapTIvate CSD channels; all can wake from LPM3.5/LPM4 |
| P2.0–P2.7 | Port 2 bidirectional I/O | 8 pins with interrupt capability; P2.0–P2.7 support CapTIvate CSD channels; all can wake from LPM3.5/LPM4 |
| P3.0–P3.2 | Port 3 bidirectional I/O | 3 pins; P3.0–P3.2 support ADC inputs and eUSCI_B0 functions; no CapTIvate support |
| DVCC / DVSS | Digital power supply / ground | Main digital/analog supply pair; requires 4.7–10 µF bulk + 0.1 µF ceramic decoupling |
| XIN / XOUT | LFXT crystal oscillator terminals | Supports external 32.768-kHz crystal for RTC; optional for LPM3.5 operation |
Key Features
| Feature | Design Value |
|---|---|
| CapTIvate™ Touch Engine | Hardware-accelerated, autonomous scanning with spread spectrum, auto-tuning, and debouncing - enables robust touch under 15-kV ESD (IEC‑61000-4-2) |
| FRAM Memory Architecture | 15.5 KB nonvolatile FRAM with ECC, 10¹⁵ write endurance, and zero-write-delay - eliminates flash erase cycles and wear leveling overhead |
| Ultra-Low-Power Operation | 16 nA shutdown (LPM4.5), 730 nA RTC-only mode (LPM3.5), and <5 µA wake-on-touch - extends battery life in energy-constrained HMIs |
| Integrated Analog Peripherals | 8-channel 10-bit ADC with 200 ksps sampling and internal 1.5-V reference - supports direct sensor signal acquisition without external references |
| Flexible Communication Interfaces | Dual eUSCI_A modules (UART/IrDA/SPI) + eUSCI_B (I²C/SPI) - enables simultaneous host communication and peripheral control in multi-interface systems |
Applications
| Electronic Smart Locks | Motorized Window Blinds |
|---|---|
|
Use Scenario: Capacitive keypad on stainless-steel or glass door panel exposed to moisture, condensation, and frequent cleaning. IC Role / Device Role / Timing Role: Primary HMI controller executing real-time touch decoding, secure credential validation, and motor actuation sequencing. Use Value: CapTIvate hardware immunity to 10-V RMS noise and water rejection allows reliable operation without mechanical buttons or sealed membranes. |
Use Scenario: Wall-mounted touch slider controlling blind position and tilt angle in residential HVAC-integrated smart home systems. IC Role / Device Role / Timing Role: Standalone touch controller interfacing with motor driver ICs via SPI and monitoring ambient light/temperature via ADC. Use Value: High-resolution slider support (up to 1024 points) enables precise positional feedback; LPM3.5 RTC maintains schedule during deep sleep. |
| Garage Door Keypads | Wireless Speaker Controls |
|
Use Scenario: Outdoor keypad mounted on aluminum housing subject to wide temperature swings (-40°C to +85°C) and ESD events. IC Role / Device Role / Timing Role: Dedicated touch processor handling proximity wake-up, button press validation, and encrypted RF transmission trigger. Use Value: Built-in EFT/ESD resilience (4-kV EFT, 15-kV ESD) meets IEC‑61000-4-4/-2 requirements without external protection components. |
Use Scenario: Compact Bluetooth speaker with hidden capacitive controls beneath curved acrylic surface, requiring low-profile TSSOP packaging. IC Role / Device Role / Timing Role: Touch interface co-processor managing gesture recognition and volume/mute commands sent to main audio SoC via I²C. Use Value: TSSOP-32 footprint fits tight PCB layouts; <5 µA wake-on-touch extends battery runtime between user interactions. |
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 (5 mm × 5 mm) vs. TSSOP-32 (11 mm × 6.2 mm); identical FRAM/RAM/CapTIvate specs | Better thermal performance and higher board density; unsuitable for through-hole prototyping or manual rework | Select IRHB for space-constrained PCBs requiring improved thermal dissipation; select IDA for cost-sensitive, hand-solderable designs |
| MSP430FR2533IDA | Same TSSOP-32 package but only 2 KB RAM and supports max 24 mutual-capacitance electrodes (vs. 64) | Limited multitouch complexity and reduced buffer capacity for large touch firmware stacks | Select FR2533IDA for simpler keypads with ≤24 electrodes and lower memory requirements; retain FR2633IDA for sliders, wheels, or proximity-rich UIs |
Compared with MSP430FR2633IRHB, the MSP430FR2633IDA trades compactness for assembly flexibility and thermal margin; compared with MSP430FR2533IDA, it delivers 2× RAM and 2.7× more mutual-capacitance channel count - directly enabling richer touch interfaces without external controllers.
Availability
MSP430FR2633IDA is available at Aetrix Electronics and suitable for electronic smart locks, motorized window blinds, and garage door keypads requiring stable component supply across industrial design cycles and production ramp phases.
Supply support for MSP430FR2633IDA 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 and embedded processing solutions, with over 90 years of innovation in low-power design and mixed-signal integration.
The MSP430FR2633IDA belongs to TI's ultra-low-power FRAM MCU family, engineered specifically for autonomous, battery-operated capacitive touch HMI applications where reliability, noise immunity, and energy efficiency are critical.
FAQ
What is the maximum number of mutual-capacitance electrodes supported by the MSP430FR2633IDA?
The MSP430FR2633IDA supports up to 64 mutual-capacitance electrodes, enabled by its dedicated CapTIvate hardware engine and flexible pin mapping across P1 and P2 ports. This capability is confirmed in the device comparison table and CapTIvate feature description of the SLAS942E datasheet. The MSP430FR2633IDA achieves this without CPU intervention during scanning, preserving low-power operation and deterministic response time.
Does the MSP430FR2633IDA include an integrated RTC, and what is its lowest-power operating mode?
Yes, the MSP430FR2633IDA includes a 16-bit real-time counter (RTC) that operates in LPM3.5 mode with a 32.768-kHz crystal, drawing just 730 nA typical current. This mode retains RTC functionality while powering down the CPU, FRAM, and most peripherals - making it ideal for calendar-based wake-up in battery-powered HMIs. The MSP430FR2633IDA's RTC is fully autonomous and does not require CPU polling or software intervention to maintain timekeeping.
What are the key differences between the MSP430FR2633IDA and MSP430FR2533IDA?
The MSP430FR2633IDA provides 4 KB of RAM versus 2 KB in the MSP430FR2533IDA, and supports up to 64 mutual-capacitance electrodes compared to 24. Both share identical 15.5 KB FRAM, TSSOP-32 packaging, and CapTIvate feature set. These differences make the MSP430FR2633IDA suitable for complex sliders, wheels, or multitouch interfaces, while the MSP430FR2533IDA targets simpler keypads where memory and channel count are less demanding.
Can the MSP430FR2633IDA operate reliably in wet or conductive environments?
Yes, the MSP430FR2633IDA's CapTIvate technology includes hardware-level water rejection algorithms, spread-spectrum modulation, and built-in noise filtering - enabling operation through thick glass, plastic, metal, and wood, even in wet, greasy, or dirty conditions. It meets IEC‑61000-4-2 (15-kV ESD), IEC‑61000-4-4 (4-kV EFT), and IEC‑61000-4-6 compliance thresholds without external shielding, as verified in TI's CapTIvate system-level testing referenced in SLAS942E.
What development tools are officially supported for the MSP430FR2633IDA?
Texas Instruments officially supports the CAPTIVATE‑FR2633 development kit, which includes the MSP430FR2633IDA-based capacitive touch evaluation board and the CAPTIVATE-PGMR programmer. The CapTIvate Design Center PC GUI enables real-time tuning of touch parameters without code changes, and MSP430Ware™ provides ROM-resident CapTIvate libraries. The MSP430FR2633IDA is also compatible with the MSP‑TS430RGE24A target board for broader peripheral validation.
MSP430FR2633IDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Bulk
- 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:
MSP430FR2633IDA FAQ
1.How can I place an order for MSP430FR2633IDA through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2633IDA 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 MSP430FR2633IDA reliable?
The price and inventory of MSP430FR2633IDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2633IDA is usually 5 days.
3.What payment methods are accepted for MSP430FR2633IDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2633IDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2633IDA?
MSP430FR2633IDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2633IDA 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 MSP430FR2633IDA?
For technical support, including MSP430FR2633IDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2633IDA requirements.
6.How does Aetrix verify that MSP430FR2633IDA is sourced from the original manufacturer or authorized distributors?
All MSP430FR2633IDA 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 MSP430FR2633IDA meets industry standards.
7.What is the process for return or replacement of MSP430FR2633IDA?
All MSP430FR2633IDA units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2633IDA, 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 MSP430FR2633IDA part is unused and in its original packaging.
Return procedure for MSP430FR2633IDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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