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Texas Instruments MSP430G2403IRHB32R
- Part No.:
- MSP430G2403IRHB32R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2403IRHB32R.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
MSP430G2403IRHB32R from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in a 32-pin QFN package, featuring 8 KB flash, 512 B RAM, two 16-bit Timer_A modules, USCI with UART/I²C/SPI support, 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 touch interfaces.
For engineers reviewing the MSP430G2403IRHB32R datasheet, MSP430G2403IRHB32R pinout, MSP430G2403IRHB32R application, or MSP430G2403IRHB32R equivalent, key selection criteria include its 32-pin RHB package, absence of integrated ADC (distinguishing it from G2x33 variants), Spy-Bi-Wire debug interface, and calibrated DCO supporting up to 16 MHz at 3.3 V - critical for low-power timing-critical embedded control.
Technical Context
The MSP430G2403IRHB32R implements a 16-bit CPU with constant generators and five power-saving modes, enabling sub-1 µs wake-up from standby (0.5 µA) to active mode. Its clock system integrates a digitally controlled oscillator (DCO), internal VLO, and external crystal support (32 kHz or high-frequency via XIN/XOUT).
Peripheral integration includes USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), two 16-bit Timer_A units each with three capture/compare registers, and port-level capacitive-touch sensing on up to 24 pins - all operating under the same ultra-low-power architecture as the G2x33 family but without the 10-bit ADC subsystem.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables efficient C code execution and deterministic real-time response. |
| Flash / RAM | 8 KB flash memory and 512 B RAM - sufficient for compact firmware with bootloader (BSL) and parameter storage. |
| Supply Voltage | 1.8 V to 3.6 V operation - supports single-cell Li-ion, coin-cell, or regulated 3.3 V rails without level shifting. |
| Active Current | 230 µA at 1 MHz, 2.2 V - enables multi-year battery life in duty-cycled sensor applications. |
| Standby Current | 0.5 µA - retains RAM and wakes in <1 µs, ideal for interrupt-driven wake-on-event systems. |
| Max System Clock | 16 MHz at 3.3 V - provides headroom for UART baud rate generation, timer resolution, and responsive UI polling. |
| Package | 32-pin VQFN (RHB), 5 mm × 5 mm - surface-mount compatible with automated assembly and thermal pad for improved heat dissipation. |
Pinout & Package
Package: 32-pin VQFN (RHB), 5 mm × 5 mm body size, exposed thermal pad recommended to be connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Primary ACLK output or Timer_A0 clock input; no ADC function (G2x03 lacks ADC). |
| RST/NMI/SBWTDIO | Dedicated test/debug | Spy-Bi-Wire data I/O; also serves as reset and non-maskable interrupt input. |
| TEST/SBWTCK | Dedicated test/debug | Spy-Bi-Wire clock input; used for programming and boundary-scan testing. |
| XIN/P2.6/TA0.1 | Oscillator input | Accepts 32-kHz crystal or external digital clock; TA0.1 alternate function enables timer sync. |
| AVCC/AVSS | Analog supply domain | Separate analog power pins (pins 29, 27–28) - required for stable reference and noise-sensitive peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode (RAM retention) and 0.5 µA standby enable multi-year battery life in intermittent-sensing designs. |
| Capacitive-touch I/O | Up to 24 GPIO pins support capacitive sensing without external components - reduces BOM cost for touch-button interfaces. |
| USCI communication | Dual USCI modules support simultaneous UART (LIN-compliant), I²C, and SPI - simplifies connectivity to sensors, displays, and host MCUs. |
| Calibrated DCO | Four factory-trimmed DCO frequencies (1/8/12/16 MHz) eliminate need for external crystal in cost-sensitive applications. |
| On-chip emulation | Spy-Bi-Wire interface enables full debugging and flash programming using only two pins - saves PCB space vs. JTAG. |
Applications
| Smart Sensor Node | Capacitive Touch Panel |
|---|---|
|
Use Scenario: Battery-powered environmental sensor collecting temperature/humidity data and transmitting via UART to gateway. IC Role / Device Role / Timing Role: Main controller executing sensor polling, data formatting, and low-power UART transmission; uses DCO for precise baud-rate timing. Use Value: 230 µA active current at 1 MHz extends coin-cell life beyond 5 years in 1-second wake-interval operation. |
Use Scenario: Touch-enabled industrial HMI with 12-button overlay and LED feedback. IC Role / Device Role / Timing Role: Dedicated touch controller scanning electrodes and debouncing inputs; Timer_A generates precise charge-transfer timing. Use Value: Native capacitive-touch I/O eliminates external RC networks and dedicated touch IC, reducing component count by 8+ parts. |
| Low-Power Data Logger | Wireless Peripheral Controller |
|
Use Scenario: Standalone vibration logger sampling accelerometer data every 10 seconds and storing to flash. IC Role / Device Role / Timing Role: System manager handling RTC-less timekeeping via Timer_A LPM3 wake cycles and flash write management. Use Value: 0.5 µA standby current ensures >10-year operation on CR2032 when paired with low-leakage external circuitry. |
Use Scenario: BLE peripheral dongle translating UART commands from host MCU to SPI-configured radio module. IC Role / Device Role / Timing Role: Protocol bridge between UART (host side) and SPI (radio side); USCI_A0 and USCI_B0 operate concurrently. Use Value: Dual USCI modules enable full-duplex bridging without software bit-banging, reducing CPU load and latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2433IRHB32R | Includes 10-bit, 8-channel ADC; identical package, flash/RAM, timers, and USCI. | Required where analog sensor interfacing (e.g., thermistor, potentiometer) is needed alongside touch/UART. | Select when ADC functionality is essential; otherwise, MSP430G2403IRHB32R offers lower cost and same low-power profile. |
| MSP430G2303IPW28R | 28-pin TSSOP package; 4 KB flash, 256 B RAM; same peripheral set excluding P3 port (16 I/O vs. 24). | Better suited for space-constrained PCBs with fewer I/O needs and no requirement for 32-pin thermal performance. | Choose for legacy board compatibility or reduced pin count; trade-off is lower I/O count and no P3 port access. |
Compared with MSP430G2433IRHB32R, the MSP430G2403IRHB32R removes ADC circuitry to reduce cost and power in purely digital/touch applications; versus MSP430G2303IPW28R, it delivers +4 KB flash, +256 B RAM, and +8 I/O in a thermally superior 32-pin QFN - making it optimal for next-gen compact sensor hubs.
Availability
MSP430G2403IRHB32R is available at Aetrix Electronics and suitable for smart sensor nodes, capacitive touch interfaces, and low-power data loggers requiring stable component supply across extended production lifecycles.
Supply support for MSP430G2403IRHB32R 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 over 50 years of innovation in low-power design.
The MSP430G2x03 product line delivers cost-optimized, ultra-low-power mixed-signal microcontrollers targeting battery-operated industrial and consumer devices where minimal BOM cost and long service life are critical.
FAQ
Does the MSP430G2403IRHB32R include an analog-to-digital converter (ADC)?
No, the MSP430G2403IRHB32R does not integrate an ADC. It belongs to the G2x03 subfamily, which omits the 10-bit ADC present in G2x33 variants like the MSP430G2433IRHB32R. All pin functions referencing ADC10CLK, VREF+, or A0–A7 are not implemented on the MSP430G2403IRHB32R - confirmed by TI's device comparison table and signal descriptions in SLAS734G.
What debug interface does the MSP430G2403IRHB32R support?
The MSP430G2403IRHB32R supports Spy-Bi-Wire (SBW) via RST/NMI/SBWTDIO (pin 23) and TEST/SBWTCK (pin 24). This two-wire interface enables full in-system programming, flash erase, and real-time debugging - eliminating the need for a 4-wire JTAG header and saving PCB space. The MSP430G2403IRHB32R does not support standard JTAG.
Can the MSP430G2403IRHB32R drive a 32.768-kHz crystal?
Yes, the MSP430G2403IRHB32R supports a 32.768-kHz crystal connected between XIN (pin 26) and XOUT (pin 25) for low-frequency clocking. This configuration enables accurate real-time clock (RTC) emulation using Timer_A in LPM3, with typical stability of ±20 ppm over –40°C to 85°C when paired with a 12.5 pF load capacitor.
How many I/O pins on the MSP430G2403IRHB32R support capacitive touch sensing?
Up to 24 I/O pins on the MSP430G2403IRHB32R support capacitive touch sensing - including all P1.x, P2.x, and P3.x pins. This capability is implemented at the port-peripheral level and requires no external components; it is fully supported in the G2x03 family per Section 1.1 of SLAS734G and confirmed in the device comparison table.
What is the maximum operating frequency of the MSP430G2403IRHB32R at 3.3 V?
The MSP430G2403IRHB32R supports a maximum system clock (MCLK) frequency of 16 MHz at 3.3 V, as specified in Section 5.3 (Recommended Operating Conditions) of SLAS734G. This applies when using the internal DCO with CALBC1_16MHZ/CALDCO_16MHZ calibration constants and a 50% ±10% duty cycle.
MSP430G2403IRHB32R 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2403IRHB32R FAQ
1.How can I place an order for MSP430G2403IRHB32R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2403IRHB32R 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 MSP430G2403IRHB32R reliable?
The price and inventory of MSP430G2403IRHB32R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2403IRHB32R is usually 5 days.
3.What payment methods are accepted for MSP430G2403IRHB32R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2403IRHB32R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2403IRHB32R?
MSP430G2403IRHB32R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2403IRHB32R 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 MSP430G2403IRHB32R?
For technical support, including MSP430G2403IRHB32R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2403IRHB32R requirements.
6.How does Aetrix verify that MSP430G2403IRHB32R is sourced from the original manufacturer or authorized distributors?
All MSP430G2403IRHB32R 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 MSP430G2403IRHB32R meets industry standards.
7.What is the process for return or replacement of MSP430G2403IRHB32R?
All MSP430G2403IRHB32R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2403IRHB32R, 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 MSP430G2403IRHB32R part is unused and in its original packaging.
Return procedure for MSP430G2403IRHB32R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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