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Texas Instruments MSP430G2433IRHB32T
- Part No.:
- MSP430G2433IRHB32T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2433IRHB32T.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:14,370
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Product details
Overview
MSP430G2433IRHB32T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in a 32-pin QFN (RHB) package, featuring 8 KB flash, 512 B RAM, a 10-bit 200-ksps ADC with 8 channels and internal reference, two 16-bit Timer_A modules, USCI with UART/LIN/IrDA/SPI/I²C, and capacitive-touch-enabled I/O - deployed in battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2433IRHB32T datasheet, MSP430G2433IRHB32T pinout, MSP430G2433IRHB32T application, or MSP430G2433IRHB32T equivalent, key selection criteria include ultra-low active/standby current (230 µA @ 1 MHz / 0.5 µA), 1.8–3.6 V supply range, 32-pin QFN thermal performance, ADC channel count and reference options, and Spy-Bi-Wire debug compatibility.
Technical Context
The MSP430G2433IRHB32T implements a 16-bit CPU with constant generators and 62.5-ns instruction cycle time, paired with a digitally controlled oscillator (DCO) enabling sub-1-µs wake-up from LPM3/LPM4. Its clock system supports internal calibrated frequencies up to 16 MHz, 32-kHz crystal input, and external digital clock sources.
Peripherals include dual 16-bit Timer_A units each with three capture/compare registers, USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), brownout detection, on-chip emulation via Spy-Bi-Wire, and 24 capacitive-touch-capable I/O pins - with Port P3 available exclusively on 28- and 32-pin variants like this RHB32 device.
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 embedded control tasks. |
| Flash / RAM | 8 KB flash memory and 512 B RAM - sufficient for firmware with sensor processing, communication stacks, and calibration data storage. |
| ADC Resolution | 10-bit SAR ADC with 8 input channels, 200-ksps sampling rate, internal reference, and autoscan - supports multi-sensor analog acquisition without external components. |
| Supply Range | 1.8 V to 3.6 V operation - compatible with single-cell Li-ion, Li-polymer, or dual-cell alkaline battery systems. |
| Ultra-Low Power | 230 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA off-mode (RAM retention) - extends battery life in intermittent-sensing applications. |
| Timer Resources | Two 16-bit Timer_A modules, each with three capture/compare registers - enables precise PWM generation, input capture, and interval timing for motor control or signal conditioning. |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C) - provides flexible wired connectivity for host interfaces, sensor hubs, or display drivers. |
Pinout & Package
Package: 32-pin QFN (RHB), 5 mm × 5 mm body size, exposed thermal pad recommended to be connected to DVSS for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Primary ACLK output, Timer0_A clock input, and ADC channel 0 - enables synchronous timing and analog sensing on same pin. |
| P1.3/ADC10CLK/VREF-/VEREF-/A3 | Analog reference & ADC input | Provides ADC negative reference (VREF-/VEREF-) and serves as ADC channel 3 - supports ratiometric measurements with external sensors. |
| P1.4/SMCLK/UCB0STE/UCA0CLK/A4 | System clock & USCI interface | Outputs SMCLK and controls SPI slave transmit enable (UCB0STE) or UART/SPI clock (UCA0CLK) - critical for synchronous peripheral interfacing. |
| P1.7/UCB0SIMO/UCB0SDA/A7 | I²C/ADC multiplexed pin | Functions as I²C data line (SDA) or SPI master-out/slave-in (SIMO), plus ADC channel 7 - simplifies board routing for mixed-protocol designs. |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data - enables in-system programming and debugging with minimal footprint. |
| XIN/XOUT/P2.6/P2.7 | Crystal oscillator interface | Supports 32-kHz crystal connection for low-power real-time clock operation; internal load capacitance eliminates need for external caps in many cases. |
| AVCC/AVSS | Analog power domain | Dedicated analog supply (29) and ground (27) pins - isolate noise-sensitive ADC operation from digital switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-1-µs wake-up | Enables rapid response to external events while maintaining ultra-low average current in duty-cycled sensor systems. |
| Capacitive-touch I/O | Up to 24 GPIO pins support capacitive touch sensing without external ICs - reduces BOM cost and PCB area in HMI applications. |
| Calibrated DCO | Four factory-trimmed internal frequencies (1/8/12/16 MHz) eliminate need for external crystal in many timing-critical functions. |
| Brownout detection | Prevents erratic operation during battery voltage sag by triggering reset before logic thresholds are violated. |
| On-chip emulation | Integrated Spy-Bi-Wire interface allows full debug and flash programming using only two pins - ideal for space-constrained layouts. |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and pressure data at 10-second intervals. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, data preprocessing, UART transmission to BLE module, and ultra-low-power sleep scheduling. Use Value: 0.5 µA standby current and sub-1-µs wake-up minimize energy per measurement cycle, extending coin-cell life beyond 2 years. |
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals and driving OLED display via SPI. IC Role / Device Role / Timing Role: Signal processor executing ADC oversampling, LED timing control, and display refresh synchronization. Use Value: Integrated 10-bit ADC with internal reference and 8-channel autoscan eliminates external signal chain components, reducing system cost and size. |
| Industrial Touch Panel | Energy Harvesting Node |
|
Use Scenario: Wall-mounted HVAC control panel with slider and button capacitive touch inputs and local LED feedback. IC Role / Device Role / Timing Role: Capacitive touch controller with debounce, proximity detection, and GPIO-driven LED dimming. Use Value: 24 dedicated capacitive-touch I/O pins allow direct electrode connection without external touch IC, cutting component count and latency. |
Use Scenario: Wireless vibration sensor powered by piezoelectric harvester, storing peak amplitude data and transmitting on threshold exceedance. IC Role / Device Role / Timing Role: Ultra-low-power event-triggered controller monitoring analog comparator output and managing RF wake-up sequence. Use Value: 0.1 µA off-mode with RAM retention preserves state across energy harvesting gaps, enabling reliable cold-start operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2533IRHB32T | 16 KB flash, 512 B RAM, identical peripherals and pinout - higher code capacity for complex firmware or bootloader integration. | Suitable where future firmware expansion or field-upgrade capability is required without hardware redesign. | Select when additional flash headroom is needed for OTA updates or feature-rich sensor fusion algorithms. |
| MSP430G2403IRHB32T | No ADC10 module; otherwise identical core, timers, USCI, and power specs - lacks analog front-end capability. | Applicable in purely digital control or communication gateway roles where analog sensing is handled externally. | Choose when system already includes external ADC or analog signal conditioning, prioritizing cost reduction over integrated analog. |
Compared with MSP430G2433IRHB32T, the MSP430G2533IRHB32T offers double flash for larger firmware, while the MSP430G2403IRHB32T removes the ADC to lower unit cost - both share identical QFN-32 packaging and ultra-low-power architecture, enabling layout reuse but requiring firmware and analog interface validation.
Availability
MSP430G2433IRHB32T is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, industrial touch panels, and energy harvesting nodes requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2433IRHB32T 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 decades of expertise in ultra-low-power design and mixed-signal integration.
The MSP430G2x33 product line targets cost-sensitive, battery-operated applications demanding extended runtime, integrated analog peripherals, and compact packaging - optimized for sensor interfaces, portable instrumentation, and human-machine interaction.
FAQ
What is the maximum operating frequency of the MSP430G2433IRHB32T?
The MSP430G2433IRHB32T supports a maximum system clock (MCLK) frequency of 16 MHz at VCC = 3.3 V, 12 MHz at 2.7 V, and 6 MHz at 1.8 V - with all frequencies achieved using the internal digitally controlled oscillator (DCO) without external crystal. This scalability allows dynamic voltage/frequency scaling to optimize power versus performance.
Does the MSP430G2433IRHB32T support capacitive touch sensing?
Yes, the MSP430G2433IRHB32T supports capacitive touch sensing on up to 24 I/O pins - including all P1.x, P2.x, and P3.x ports - using its built-in capacitive touch IO functionality and integrated timer-based measurement techniques. No external components are required for basic touch button or slider implementation.
What debug interface does the MSP430G2433IRHB32T use?
The MSP430G2433IRHB32T uses the Spy-Bi-Wire (SBW) interface for on-chip emulation, accessible via the RST/NMI/SBWTDIO and TEST/SBWTCK pins. This two-wire protocol enables full JTAG-level debugging and flash programming with minimal PCB footprint, eliminating the need for a 4-pin JTAG header.
Is the ADC on the MSP430G2433IRHB32T differential or single-ended?
The ADC10 module on the MSP430G2433IRHB32T supports both single-ended and differential input modes. It features eight external input channels (A0–A7), internal temperature sensor, and selectable references (VREF+/VREF− or AVCC/AVSS), with differential mode enabled via ADC10CTL1 register configuration.
What package type is used for the MSP430G2433IRHB32T?
The MSP430G2433IRHB32T uses a 32-pin QFN package with RHB designation, measuring 5 mm × 5 mm with an exposed thermal pad. This package provides superior thermal performance and board-space efficiency compared to TSSOP or PDIP alternatives, especially in thermally constrained portable designs.
MSP430G2433IRHB32T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
MSP430G2433IRHB32T FAQ
1.How can I place an order for MSP430G2433IRHB32T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2433IRHB32T 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 MSP430G2433IRHB32T reliable?
The price and inventory of MSP430G2433IRHB32T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2433IRHB32T is usually 5 days.
3.What payment methods are accepted for MSP430G2433IRHB32T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2433IRHB32T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2433IRHB32T?
MSP430G2433IRHB32T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2433IRHB32T 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 MSP430G2433IRHB32T?
For technical support, including MSP430G2433IRHB32T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2433IRHB32T requirements.
6.How does Aetrix verify that MSP430G2433IRHB32T is sourced from the original manufacturer or authorized distributors?
All MSP430G2433IRHB32T 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 MSP430G2433IRHB32T meets industry standards.
7.What is the process for return or replacement of MSP430G2433IRHB32T?
All MSP430G2433IRHB32T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2433IRHB32T, 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 MSP430G2433IRHB32T part is unused and in its original packaging.
Return procedure for MSP430G2433IRHB32T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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