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Texas Instruments MSP430G2403IPW28
- Part No.:
- MSP430G2403IPW28
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2403IPW28.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:160
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Product details
Overview
MSP430G2403IPW28 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in 28-pin TSSOP packaging, featuring 8 KB flash, 512 B RAM, dual 16-bit Timer_A modules, USCI with UART/I²C/SPI, and 24 capacitive-touch-capable I/O pins - deployed in battery-powered sensor nodes and portable industrial interfaces.
For engineers reviewing the MSP430G2403IPW28 datasheet, MSP430G2403IPW28 pinout, MSP430G2403IPW28 application, or MSP430G2403IPW28 equivalent, key selection criteria include active-mode current at 1 MHz (230 µA @ 2.2 V), wake-up time from standby (<1 µs), supply range (1.8–3.6 V), and Spy-Bi-Wire debug interface compatibility.
Technical Context
The MSP430G2403IPW28 implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz - enabling rapid transition between five low-power modes without external clock components. Its clock system integrates ACLK (LF crystal or VLO), SMCLK (DCO-derived), and MCLK (CPU clock).
It supports capacitive-touch sensing on up to 24 GPIO pins via integrated Schmitt-trigger inputs and programmable pullup/pulldown resistors, while USCI_A0 and USCI_B0 provide hardware-synchronized UART (with LIN auto-baud), IrDA, SPI master/slave, and I²C master/slave - all operating independently of CPU load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables single-cycle 62.5-ns instruction execution for deterministic real-time control. |
| Flash / RAM | 8 KB flash memory and 512 B RAM - sufficient for standalone firmware with sensor processing, communication stacks, and touch firmware without external memory. |
| Active Current | 230 µA at 1 MHz, 2.2 V - allows multi-year operation on coin-cell batteries in intermittent-sensing applications. |
| Wake-up Time | <1 µs from LPM3 standby - critical for event-driven wake-up in energy-harvesting or interrupt-triggered sensor sampling. |
| Supply Range | 1.8 V to 3.6 V - supports direct connection to Li-ion, Li-Po, or two-AA battery systems without regulation overhead. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) - enables in-system programming and full-speed debugging using only RST/NMI and TEST pins. |
| Timer Resources | Two 16-bit Timer_A modules, each with three capture/compare registers - supports PWM generation, input capture, interval timing, and quadrature decoding. |
Pinout & Package
TSSOP-28 package (9.7 mm × 4.4 mm), lead pitch 0.65 mm, thermally enhanced for PCB-level power dissipation in compact industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, DVCC | Digital supply voltage input | Primary 1.8–3.6 V power rail for core logic, timers, and USCI peripherals; requires local 100 nF decoupling. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O pin | Configurable as timer clock input, low-frequency ACLK output, or analog input A0 - shared resource requiring careful mode sequencing. |
| 24, RST/NMI/SBWTDIO | Reset and debug data I/O | Active-low reset input, non-maskable interrupt source, and bidirectional Spy-Bi-Wire data line - eliminates need for dedicated debug header pins. |
| 25, TEST/SBWTCK | Debug clock and test mode select | Input for Spy-Bi-Wire clock and JTAG fuse programming; must be pulled high during normal operation to avoid unintended test entry. |
| 26, XOUT/P2.7 | Crystal oscillator output | Drives external 32-kHz crystal; internal feedback path requires matching load capacitance (typically 9 pF) per TI design guidelines. |
| 27, XIN/P2.6/TA0.1 | Crystal oscillator input | Accepts 32-kHz crystal signal or external clock; also serves as Timer0_A compare output TA0.1 when not used for crystal. |
| 28, DVSS | Digital ground reference | Common return path for digital I/O, timers, and USCI; must be connected to system ground plane with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Standby current of 0.5 µA and off-mode RAM retention at 0.1 µA - extends battery life in always-on monitoring applications. |
| Capacitive-touch I/O | 24 GPIO pins support capacitive sensing without external components - enables cost-effective human-interface designs (e.g., buttons, sliders) on a single chip. |
| Integrated USCI peripherals | Dual USCI modules (A0 and B0) support concurrent UART (LIN-capable), I²C, and SPI - eliminates need for external level shifters or protocol translators. |
| Calibrated DCO oscillator | Four factory-trimmed DCO frequencies (1/8/12/16 MHz) - removes requirement for external high-frequency crystal in most timing-critical applications. |
| Brownout detection | Programmable threshold with reset and interrupt options - prevents erratic behavior during battery voltage sag or power ramp-up. |
Applications
| Industrial Sensor Node | Capacitive Touch Interface |
|---|---|
|
Use Scenario: Wireless temperature/humidity node powered by CR2032 battery, sampling every 30 seconds and transmitting via UART-to-LoRa module. IC Role / Device Role / Timing Role: Main controller executing ADC reads, sleep/wake scheduling, UART framing, and touch-button polling. Use Value: 230 µA active current and sub-µs wake-up enable >5-year battery life; integrated USCI avoids UART bridge IC. |
Use Scenario: Appliance control panel with 8-button overlay and LED feedback, operating from 3.3 V rail. IC Role / Device Role / Timing Role: Capacitive touch acquisition engine with debounce, LED PWM driver, and I²C host for display update. Use Value: 24 touch-capable pins eliminate external touch controller; built-in Schmitt triggers and configurable pull resistors reduce BOM count. |
| Low-Cost Power Monitor | Portable Diagnostic Tool |
|
Use Scenario: AC mains energy monitor with current transformer input, isolated UART output, and local LCD. IC Role / Device Role / Timing Role: Signal conditioner (analog front-end not present, but GPIO + USCI handle isolation interface), UART transmitter, and LCD segment driver. Use Value: 8 KB flash stores calibration tables and communication protocol stack; Spy-Bi-Wire enables field firmware updates without connector access. |
Use Scenario: Handheld device for reading automotive OBD-II via UART, with button navigation and OLED display. IC Role / Device Role / Timing Role: UART protocol handler (115.2 kbps), button scanner, OLED SPI controller, and low-battery supervisor. Use Value: Dual USCI modules allow simultaneous UART (OBD-II) and SPI (OLED) operation; 1.8 V minimum supply supports wide-input buck converter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2303IPW28 | 4 KB flash, 256 B RAM, same peripherals and pinout | Lower memory footprint suits simpler sensor polling or fixed-sequence control | Select when firmware size ≤3.5 KB and no future feature expansion is planned. |
| MSP430G2433IPW28 | Adds 10-bit 8-channel ADC, 2x more RAM (512 B → 512 B unchanged, but ADC enables analog sensing) | Required for designs needing on-chip analog signal acquisition (e.g., thermistor, potentiometer, light sensor) | Choose when analog inputs beyond basic GPIO are needed - ADC channels are not present in MSP430G2403IPW28. |
Compared with MSP430G2303IPW28, the MSP430G2403IPW28 provides double flash capacity for complex state machines or protocol stacks; versus MSP430G2433IPW28, it omits the ADC but reduces cost and power in purely digital I/O or communication-centric roles.
Availability
MSP430G2403IPW28 is available at Aetrix Electronics and suitable for industrial sensor nodes, capacitive touch interfaces, low-cost power monitors, and portable diagnostic tools requiring stable component supply across multi-year production cycles.
Supply support for MSP430G2403IPW28 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 integration.
The MSP430G2x03 product line targets cost-sensitive, battery-operated applications where ultra-low-power operation, integrated peripherals, and small footprint are essential - such as smart sensors, wearables, and simple HMI devices.
FAQ
Does MSP430G2403IPW28 include an analog-to-digital converter (ADC)?
No, the MSP430G2403IPW28 does not include an ADC. It belongs to the G2x03 subfamily, which omits the 10-bit ADC found in the G2x33 variants (e.g., MSP430G2433IPW28). All analog input pins (A0–A7) on MSP430G2403IPW28 are unconnected internally to conversion circuitry and function only as general-purpose I/O or comparator inputs if external analog comparators are used.
What debug interface does MSP430G2403IPW28 support?
The MSP430G2403IPW28 supports Spy-Bi-Wire (SBW), a two-wire variant of JTAG using RST/NMI/SBWTDIO and TEST/SBWTCK pins. This interface enables full-speed debugging, flash programming, and boundary-scan testing without requiring a 4-pin JTAG header - reducing PCB space and connector cost in space-constrained designs.
Can MSP430G2403IPW28 drive a 32.768 kHz crystal?
Yes, the MSP430G2403IPW28 supports a 32.768 kHz crystal connected between XIN (P2.6) and XOUT (P2.7) pins for low-power real-time clock (RTC) operation. The internal low-frequency oscillator (LFXT1) circuit provides automatic gain control and startup timing; TI recommends 9 pF load capacitance and proper PCB layout per SLAS734G Section 5.22.
Is MSP430G2403IPW28 pin-compatible with other TSSOP-28 MSP430G2x family members?
Yes, the MSP430G2403IPW28 shares identical pinout and electrical characteristics with MSP430G2303IPW28 and MSP430G2433IPW28 in the TSSOP-28 package. All share the same peripheral mapping, I/O structure, and power pin locations - enabling hardware reuse across memory- or feature-tiered variants in the same footprint.
What is the maximum system clock frequency supported by MSP430G2403IPW28?
The MSP430G2403IPW28 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 - as specified in the Recommended Operating Conditions table (Section 5.3). These limits apply when using the internal DCO; external clock sources may operate higher but are constrained by module-specific timing specs.
MSP430G2403IPW28 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Bulk
- 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:
MSP430G2403IPW28 FAQ
1.How can I place an order for MSP430G2403IPW28 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2403IPW28 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 MSP430G2403IPW28 reliable?
The price and inventory of MSP430G2403IPW28 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2403IPW28 is usually 5 days.
3.What payment methods are accepted for MSP430G2403IPW28?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2403IPW28 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2403IPW28?
MSP430G2403IPW28 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2403IPW28 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 MSP430G2403IPW28?
For technical support, including MSP430G2403IPW28 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2403IPW28 requirements.
6.How does Aetrix verify that MSP430G2403IPW28 is sourced from the original manufacturer or authorized distributors?
All MSP430G2403IPW28 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 MSP430G2403IPW28 meets industry standards.
7.What is the process for return or replacement of MSP430G2403IPW28?
All MSP430G2403IPW28 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2403IPW28, 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 MSP430G2403IPW28 part is unused and in its original packaging.
Return procedure for MSP430G2403IPW28:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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