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Texas Instruments MSP430G2303IRHB32T
- Part No.:
- MSP430G2303IRHB32T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2303IRHB32T.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:342
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Product details
Overview
MSP430G2303IRHB32T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in a 32-pin QFN (RHB) package, featuring 4 KB Flash, 256 B RAM, two 16-bit Timer_A modules with three capture/compare registers each, USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and 24 capacitive-touch-capable I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2303IRHB32T datasheet, MSP430G2303IRHB32T pinout, MSP430G2303IRHB32T application, or MSP430G2303IRHB32T equivalent, key selection criteria include its 4 KB Flash/256 B RAM configuration, absence of integrated ADC (distinguishing it from G2x33 variants), Spy-Bi-Wire debug interface, and support for LIN-compliant UART auto-baud detection in low-power embedded sensing.
Technical Context
The MSP430G2303IRHB32T implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) enabling sub-1 µs wake-up from standby mode. Its clock system integrates internal VLO, calibrated DCO (up to 16 MHz at 3.3 V), and external 32-kHz crystal or digital clock source support via XIN/XOUT.
Peripherals include dual 16-bit Timer_A modules (TA0 and TA1), each with three capture/compare registers and multiple clock sources (ACLK, SMCLK, TACLK); USCI_A0 supporting enhanced UART with LIN auto-baud, IrDA, and SPI; and USCI_B0 supporting SPI and I²C master/slave modes - all operating under five configurable low-power modes.
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 compact firmware in resource-constrained designs. |
| Flash / RAM | 4 KB Flash memory and 256 B RAM; sufficient for standalone sensor firmware with communication stack and minimal data buffering. |
| Supply Voltage | 1.8 V to 3.6 V operation; supports direct connection to single-cell Li-ion, Li-po, or two-cell alkaline batteries without regulation. |
| Active Current | 230 µA at 1 MHz, 2.2 V; enables multi-year battery life in duty-cycled sensor applications with frequent low-power sleep intervals. |
| Wake-up Time | < 1 µs from standby mode; critical for responsive real-time event handling (e.g., touch interrupt or external trigger) without latency penalty. |
| Timer Resources | Two 16-bit Timer_A modules, each with three capture/compare registers; supports precise PWM generation, input capture for pulse timing, and interval counting across multiple independent channels. |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C); provides flexible wired connectivity for host MCU interfacing, sensor fusion, or display control without external transceivers. |
Pinout & Package
Package: 32-pin QFN (RHB), 5 mm × 5 mm, exposed thermal pad (recommended connection to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as Timer0_A clock input, ACLK output, or analog input A0; enables flexible clock tree routing and basic analog sensing. |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line; supports in-system programming and debugging with single-wire interface. |
| TEST/SBWTCK | Debug clock input | Input for Spy-Bi-Wire test clock; required for JTAG/Spy-Bi-Wire programming and boundary-scan testing without dedicated JTAG header. |
| XIN/P2.6/TA0.1 | Oscillator input | Crystal oscillator input (32 kHz) or general-purpose I/O; enables precision real-time clocking or GPIO expansion when crystal not used. |
| AVCC / AVSS | Analog supply rails | Dedicated analog power (29) and ground (27) pins; isolate noise-sensitive analog circuitry (e.g., reference paths) from digital switching noise. |
| NC (Pins 8, 32) | No-connect | Unbonded pads; must be left floating or tied to ground per layout guidelines to avoid parasitic coupling or EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Standby current of 0.5 µA and off-mode (RAM retention) current of 0.1 µA enable multi-year operation on coin-cell batteries in intermittent-sensing applications. |
| Five programmable low-power modes | Supports fine-grained power management - from full active mode to LPM4 (VLO only) - allowing optimal trade-off between responsiveness and energy consumption. |
| Spy-Bi-Wire debug interface | Single-wire in-circuit debugging and programming eliminates need for 4-pin JTAG header, reducing PCB footprint and BOM cost. |
| LIN-compliant UART with auto-baud | USCI_A0 UART detects baud rate automatically from dominant pulse width, simplifying integration into automotive body electronics or industrial LIN networks. |
| Capacitive-touch I/O capability | Up to 24 GPIO pins support capacitive touch sensing without external components, enabling cost-effective human-interface designs (e.g., buttons, sliders). |
Applications
| Smart Sensor Node | Industrial Touch Interface |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway every 5 minutes. IC Role / Device Role / Timing Role: Main controller executing sensor readout, data formatting, low-power scheduling, and UART transmission using USCI_A0 with auto-baud sync to host. Use Value: 0.1 µA off-mode current extends CR2032 battery life beyond 5 years; sub-1 µs wake-up ensures accurate timestamping of sensor events. |
Use Scenario: Panel-mounted control interface with 12 capacitive touch keys and LED status indicators in factory HMI. IC Role / Device Role / Timing Role: Dedicated touch controller managing electrode scanning, debouncing, and LED PWM dimming via Timer_A outputs. Use Value: Native capacitive-touch I/O eliminates external ICs; 24 available touch-capable pins allow scalable UI design without pin multiplexing conflicts. |
| Portable Medical Monitor | Low-Cost LIN Subnode |
|
Use Scenario: Wearable pulse oximeter logging SpO₂ values locally and alerting via vibration motor on threshold breach. IC Role / Device Role / Timing Role: System-on-chip managing analog front-end sampling (via external ADC), real-time alarm logic, motor drive timing, and data storage in Flash. Use Value: 4 KB Flash stores firmware + calibration tables; 16-bit Timer_A provides precise motor PWM timing and heartbeat interval measurement. |
Use Scenario: Automotive door module communicating over LIN bus for window position feedback and lock status reporting. IC Role / Device Role / Timing Role: LIN slave node implementing physical layer and protocol handler using USCI_A0 UART with automatic baud-rate detection synchronized to master header. Use Value: Eliminates need for external LIN transceiver in cost-sensitive nodes; built-in auto-baud reduces software overhead and improves bus synchronization robustness. |
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 |
|---|---|---|---|
| MSP430G2403IRHB32T | 8 KB Flash, 512 B RAM, same peripherals and package; no ADC. | Preferred where larger firmware (e.g., BLE stack + sensor fusion) fits within 8 KB Flash and higher RAM is needed for buffering. | Select when firmware size exceeds 4 KB or runtime data structures require >256 B RAM, without needing ADC functionality. |
| MSP430G2333IRHB32T | Includes 10-bit, 8-channel ADC with internal reference and autoscan; otherwise identical Flash/RAM/peripherals. | Required for designs integrating analog sensors (e.g., thermistor, potentiometer) directly without external ADC. | Choose only if on-chip ADC is mandatory; otherwise MSP430G2303IRHB32T offers lower cost and identical low-power performance for digital-only sensing. |
Compared with MSP430G2403IRHB32T, the MSP430G2303IRHB32T trades Flash/RAM capacity for cost reduction while retaining identical peripheral set and power profile; compared with MSP430G2333IRHB32T, it removes ADC functionality to simplify analog design and reduce BOM count where external signal conditioning is already present.
Availability
MSP430G2303IRHB32T is available at Aetrix Electronics and suitable for smart sensor nodes, industrial touch interfaces, portable medical monitors, and low-cost LIN subnodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MSP430G2303IRHB32T 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 decades of expertise in ultra-low-power microcontroller design and manufacturing.
The MSP430G2x03 product line delivers cost-optimized, energy-efficient MCUs targeting battery-powered sensing, human interface, and industrial control applications - emphasizing minimal bill-of-materials and rapid time-to-market.
FAQ
Does MSP430G2303IRHB32T include an integrated analog-to-digital converter (ADC)?
No, the MSP430G2303IRHB32T does not include an integrated ADC. It belongs to the G2x03 family, which omits the 10-bit ADC found in the G2x33 variants (e.g., MSP430G2333IRHB32T). This allows TI to offer a lower-cost option for purely digital or externally conditioned analog applications. Designers requiring on-chip ADC must select a G2x33 part instead.
What debug interface does MSP430G2303IRHB32T support?
The MSP430G2303IRHB32T supports the Spy-Bi-Wire (SBW) interface via RST/NMI/SBWTDIO (Pin 23) and TEST/SBWTCK (Pin 24). This two-pin interface enables full in-system programming and debugging using TI's MSP-FET or compatible tools. It does not support standard 4-wire JTAG, though SBW is functionally equivalent for development and production programming.
What is the maximum system clock frequency supported by MSP430G2303IRHB32T?
The MSP430G2303IRHB32T supports a maximum system clock (MCLK) frequency of 16 MHz at VCC = 3.3 V, 12 MHz at VCC = 2.7 V, and 6 MHz at VCC = 1.8 V. These limits are defined by the DCO calibration and voltage-dependent timing margins. The device includes four factory-calibrated DCO frequencies to ensure reliable operation across the 1.8–3.6 V supply range.
How many capacitive-touch-capable I/O pins does MSP430G2303IRHB32T provide?
The MSP430G2303IRHB32T provides up to 24 capacitive-touch-enabled I/O pins across Ports P1, P2, and P3. This capability is implemented in hardware and requires no external components - enabling direct implementation of touch buttons, sliders, or wheels. All 24 pins retain full GPIO functionality when touch sensing is disabled.
Is MSP430G2303IRHB32T pin-compatible with other devices in the MSP430G2x03/G2x33 family?
Yes, the MSP430G2303IRHB32T is pin-compatible with all 32-pin RHB-packaged members of the MSP430G2x03 and MSP430G2x33 families, including MSP430G2403IRHB32T and MSP430G2333IRHB32T. Pin functions, power domains (DVCC/DVSS/AVCC/AVSS), and debug interface locations are identical - allowing drop-in replacement where peripheral requirements align.
MSP430G2303IRHB32T 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:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2303IRHB32T FAQ
1.How can I place an order for MSP430G2303IRHB32T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2303IRHB32T 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 MSP430G2303IRHB32T reliable?
The price and inventory of MSP430G2303IRHB32T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2303IRHB32T is usually 5 days.
3.What payment methods are accepted for MSP430G2303IRHB32T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2303IRHB32T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2303IRHB32T?
MSP430G2303IRHB32T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2303IRHB32T 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 MSP430G2303IRHB32T?
For technical support, including MSP430G2303IRHB32T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2303IRHB32T requirements.
6.How does Aetrix verify that MSP430G2303IRHB32T is sourced from the original manufacturer or authorized distributors?
All MSP430G2303IRHB32T 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 MSP430G2303IRHB32T meets industry standards.
7.What is the process for return or replacement of MSP430G2303IRHB32T?
All MSP430G2303IRHB32T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2303IRHB32T, 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 MSP430G2303IRHB32T part is unused and in its original packaging.
Return procedure for MSP430G2303IRHB32T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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