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Texas Instruments MSP430G2233IRHB32R
- Part No.:
- MSP430G2233IRHB32R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2233IRHB32R.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430G2233IRHB32R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 2 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with 8 channels and internal reference, two 16-bit Timer_A modules (each with three capture/compare registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and up to 24 capacitive-touch-enabled I/O pins in a 32-pin VQFN package. It targets battery-powered sensor nodes and portable measurement systems requiring sub-1-µs wake-up from standby.
For engineers reviewing the MSP430G2233IRHB32R datasheet, MSP430G2233IRHB32R pinout, MSP430G2233IRHB32R application, or MSP430G2233IRHB32R equivalent, key selection criteria include its 2 KB flash size, 10-bit ADC capability, QFN-32 thermal performance, Spy-Bi-Wire debug interface, and support for LIN-compliant UART auto-baud detection in low-power embedded designs.
Technical Context
The MSP430G2233IRHB32R implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) calibrated to four factory-set frequencies (up to 16 MHz), enabling sub-1-µs wake-up from LPM3/LPM4. Its clock system integrates internal VLO, 32-kHz crystal support (XT1), and external digital clock input.
Peripherals are tightly synchronized via shared clock domains: MCLK drives the CPU and flash, SMCLK feeds timers and USCI modules, and ACLK serves the RTC and ADC. The ADC supports autoscan across 8 analog inputs with sample-and-hold and programmable reference (VREF+/VREF− or internal 1.5 V), while USCI_A0 provides LIN-compliant UART with automatic baud-rate detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle at 16 MHz; enables compact, deterministic real-time code execution |
| Flash / RAM | 2 KB flash memory (in-system programmable, no external VPP); 256 B RAM with retention in LPM4 mode |
| ADC10 | 10-bit SAR ADC, 200 ksps max sampling rate, 8-channel autoscan, internal 1.5-V reference, VREF± inputs |
| Power Consumption | 230 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA LPM4 (RAM retention); five configurable low-power modes |
| Timers | Two 16-bit Timer_A modules (TA0, TA1), each with three capture/compare registers and multiple clock sources |
| Communication | USCI_A0: UART (LIN auto-baud), IrDA, SPI; USCI_B0: SPI, I²C; both support independent clocking and DMA-ready transfers |
| Supply Range | 1.8 V to 3.6 V operation; 2.2 V minimum for flash programming; brownout detector with hysteresis enabled by default |
Pinout & Package
VQFN-32 (RHB) package, 5 mm × 5 mm body, 0.5-mm pitch, exposed thermal pad (recommended to connect to DVSS). Pin 1 marked by top-side dot; pinout optimized for signal integrity and thermal dissipation in space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Primary ADC input A0; ACLK output; Timer0_A clock source; general-purpose digital I/O with interrupt capability |
| P1.3/ADC10CLK/VREF−/VEREF−/A3 | Analog reference & input | ADC negative reference input (VREF−); ADC10 clock output; analog input A3; supports internal/external reference configuration |
| P1.4/SMCLK/UCA0CLK/VREF+/VEREF+/A4 | System clock & analog reference | SMCLK output; USCI_A0 clock I/O; ADC positive reference (VREF+); analog input A4; enables synchronous peripheral timing |
| P3.0–P3.7 | General I/O (Port 3) | Eight additional I/O pins available only on 28-/32-pin packages; support timer capture/compare functions (TA0.2, TA1.0–TA1.2, TA1CLK) |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input; non-maskable interrupt; bidirectional Spy-Bi-Wire data line for single-wire debugging and programming |
| TEST/SBWTCK | Debug clock | Spy-Bi-Wire test clock input; used exclusively for programming and emulation; tied high during normal operation |
| XIN/XOUT | Crystal oscillator interface | Differential crystal input/output for 32-kHz LFXT1 oscillator; supports external crystal or digital clock source on XIN |
| AVCC/AVSS | Analog power domain | Dedicated analog supply (AVCC) and ground (AVSS); required for ADC accuracy and noise immunity; must be decoupled separately |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast wake-up | Sub-1-µs transition from LPM3/LPM4 to active mode using DCO, enabling responsive event-driven sensing without polling overhead |
| Capacitive touch I/O | Up to 24 GPIO pins support capacitive touch sensing with integrated charge-transfer logic-no external components needed |
| LIN-compliant UART | USCI_A0 UART includes automatic baud-rate detection per LIN 2.x spec, simplifying host-to-node communication in automotive body electronics |
| Integrated voltage reference | On-chip 1.5-V bandgap reference for ADC, eliminating need for external precision reference in cost-sensitive sensor applications |
| Low-power debug | Spy-Bi-Wire interface uses single pin (SBWTDIO) + clock (SBWTCK) for full JTAG-equivalent programming and real-time debugging at <1 µA |
Applications
| Smart Sensor Node | Industrial Temperature Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and light data every 30 seconds, transmitting via UART to gateway. IC Role / Device Role / Timing Role: Primary MCU executing sensor acquisition, ADC conversion, data processing, and UART transmission; manages ultra-low-duty-cycle sleep/wake cycles. Use Value: 0.1 µA LPM4 current extends 2-AA battery life beyond 5 years; integrated ADC reference eliminates calibration drift; LIN UART ensures robust communication in noisy plant environments. |
Use Scenario: DIN-rail mounted temperature logger in HVAC control panel, reading thermistor and RTD inputs, storing data locally, and reporting via RS-485. IC Role / Device Role / Timing Role: Signal-conditioning MCU interfacing analog sensors, performing linearization, and buffering data in RAM before serial transmission. Use Value: 8-channel ADC autoscan reduces firmware complexity; 256 B RAM retains 128 samples during comms outage; 1.8–3.6 V range accommodates wide industrial supply rails. |
| Capacitive Touch Remote | Portable Medical Pulse Oximeter |
Use Scenario: Coin-cell powered remote control with 8-button capacitive keypad, LED feedback, and IR transmission. IC Role / Device Role / Timing Role: Touch controller and IR signal generator; detects finger proximity, debounces keys, and modulates 38-kHz carrier. Use Value: Native capacitive touch I/O eliminates external ICs; 24 configurable touch pins support multi-gesture UI; 0.5 µA standby enables >2-year shelf life. |
Use Scenario: Handheld pulse oximeter acquiring red/IR photodiode signals, computing SpO₂, and displaying results on OLED. IC Role / Device Role / Timing Role: Analog front-end controller synchronizing LED drive timing with ADC sampling; performs real-time FFT and ratio calculation. Use Value: 200-ksps ADC captures fast photodiode transients; internal 1.5-V reference ensures stable SpO₂ accuracy across battery discharge; 16-bit math accelerates saturation computation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2333IRHB32R | 4 KB flash, 256 B RAM, same peripherals and pinout | Supports larger firmware (e.g., BLE stack integration, advanced filtering algorithms) | Select when firmware growth headroom or future feature expansion is required without PCB change |
| MSP430G2433IRHB32R | 8 KB flash, 512 B RAM, identical peripheral set and package | Enables local data logging, OTA updates, or dual-sensor fusion without external memory | Choose for higher algorithmic complexity or extended data buffering needs while retaining same layout |
Compared with MSP430G2233IRHB32R, the G2333 and G2433 offer scalable flash/RAM while preserving pin compatibility, debug interface, and peripheral register mapping-making them drop-in upgrades for evolving firmware requirements without redesigning the analog front-end or power delivery.
Availability
MSP430G2233IRHB32R is available at Aetrix Electronics and suitable for smart sensor nodes, industrial temperature monitors, capacitive touch remotes, and portable medical devices requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2233IRHB32R 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 MSP430G2x33 product line was designed specifically for cost-sensitive, battery-operated applications demanding ultra-low power, integrated analog peripherals (ADC, reference), and capacitive touch capability in compact QFN packages.
FAQ
What is the maximum operating frequency of the MSP430G2233IRHB32R?
The MSP430G2233IRHB32R 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. This is achieved using the factory-calibrated DCO oscillator; external crystals up to 32 kHz are supported via XT1 for low-frequency timing.
Does the MSP430G2233IRHB32R include an integrated ADC reference voltage?
Yes, the MSP430G2233IRHB32R includes an internal 1.5-V bandgap voltage reference dedicated to the ADC10 module. This reference can be selected as VREF+ or VREF−, enabling accurate conversions without external components-critical for space- and cost-constrained sensor designs.
How many I/O pins support capacitive touch sensing on the MSP430G2233IRHB32R?
The MSP430G2233IRHB32R supports capacitive touch sensing on up to 24 I/O pins across Ports P1, P2, and P3. These pins integrate built-in charge-transfer circuitry, allowing direct connection to touch pads without external RC networks or dedicated touch controllers.
What debug interface does the MSP430G2233IRHB32R use?
The MSP430G2233IRHB32R uses the Spy-Bi-Wire (SBW) interface-a two-pin variant of JTAG-for programming and real-time debugging. It requires only SBWTDIO (bidirectional data) and SBWTCK (clock), minimizing PCB footprint and enabling in-system debug with <1 µA quiescent current.
Is the MSP430G2233IRHB32R pin-compatible with other devices in the MSP430G2x33 family?
Yes, the MSP430G2233IRHB32R in the RHB32 (VQFN-32) package shares identical pinout, peripheral mapping, and register layout with MSP430G2333IRHB32R and MSP430G2433IRHB32R-enabling hardware reuse and firmware scalability across flash size variants.
MSP430G2233IRHB32R 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:
- 2KB (2K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 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:
MSP430G2233IRHB32R FAQ
1.How can I place an order for MSP430G2233IRHB32R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2233IRHB32R 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 MSP430G2233IRHB32R reliable?
The price and inventory of MSP430G2233IRHB32R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2233IRHB32R is usually 5 days.
3.What payment methods are accepted for MSP430G2233IRHB32R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2233IRHB32R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2233IRHB32R?
MSP430G2233IRHB32R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2233IRHB32R 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 MSP430G2233IRHB32R?
For technical support, including MSP430G2233IRHB32R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2233IRHB32R requirements.
6.How does Aetrix verify that MSP430G2233IRHB32R is sourced from the original manufacturer or authorized distributors?
All MSP430G2233IRHB32R 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 MSP430G2233IRHB32R meets industry standards.
7.What is the process for return or replacement of MSP430G2233IRHB32R?
All MSP430G2233IRHB32R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2233IRHB32R, 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 MSP430G2233IRHB32R part is unused and in its original packaging.
Return procedure for MSP430G2233IRHB32R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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