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Texas Instruments MSP430G2403IPW28R
- Part No.:
- MSP430G2403IPW28R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2403IPW28R.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,054
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Product details
Overview
MSP430G2403IPW28R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 28-pin TSSOP packaging, featuring 8 KB flash, 512 B RAM, two 16-bit Timer_A modules with three capture/compare registers each, USCI with UART/LIN/IrDA/SPI/I²C support, and a digitally controlled oscillator enabling sub-1-µs wake-up from standby mode. It targets battery-powered sensor interface and capacitive-touch applications requiring long runtime and compact footprint.
For engineers reviewing the MSP430G2403IPW28R datasheet, MSP430G2403IPW28R pinout, MSP430G2403IPW28R application, or MSP430G2403IPW28R equivalent, key selection criteria include verified 1.8–3.6 V operation, confirmed 230 µA active current at 1 MHz/2.2 V, absence of integrated ADC (distinguishing it from G2x33 variants), and Spy-Bi-Wire debug compatibility for low-pin-count development.
Technical Context
The MSP430G2403IPW28R implements a 16-bit CPU with constant generators and 16 registers for high code efficiency. Its clock system integrates a DCO calibrated to four frequencies (up to 16 MHz), internal VLO, 32-kHz crystal support, and external digital clock input - all configurable via BCSCTL registers without external components.
Peripherals are accessed through memory-mapped I/O and controlled by dedicated module registers. The USCI supports simultaneous UART (with LIN auto-baud detection), IrDA, SPI master/slave, and I²C modes using shared hardware resources. Port P3 (pins 8–21) is available only on 28-pin and 32-pin packages and provides additional timer-capable I/O not present in 20-pin variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables deterministic real-time control in resource-constrained systems. |
| Flash / RAM | 8 KB flash memory and 512 B RAM; sufficient for firmware with moderate peripheral drivers and sensor data buffering. |
| Supply Voltage | 1.8 V to 3.6 V operating range; supports direct connection to single-cell Li-ion, LiFePO₄, or two-cell alkaline batteries. |
| Active Current | 230 µA at 1 MHz, 2.2 V; enables multi-year battery life in periodic-sensing applications with duty-cycled operation. |
| Wake-up Time | < 1 µs from LPM3/LPM4 to active mode; critical for interrupt-driven event response in energy-harvesting or wake-on-touch designs. |
| Timer Resources | Two 16-bit Timer_A modules, each with three capture/compare registers; supports PWM generation, input capture, and interval timing across 24 I/O pins. |
| Communication | USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C); eliminates need for external level shifters or protocol translators in mixed-interface systems. |
Pinout & Package
TSSOP-28 package (PW28), 9.7 mm × 4.4 mm body size, 0.65 mm pitch; thermally enhanced for PCB-level reliability in industrial ambient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, DVCC | Digital supply voltage input | Primary power rail for core logic and digital I/O; requires local 100-nF decoupling to ground. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O pin | Configurable as Timer0_A clock input, ACLK output, or general-purpose I/O; no ADC function (G2x03 family lacks ADC). |
| 24, RST/NMI/SBWTDIO | Reset and debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line; enables single-wire debugging without JTAG header. |
| 25, TEST/SBWTCK | Debug clock input | Provides clock signal for Spy-Bi-Wire programming and emulation; must be driven externally during firmware load. |
| 26, XOUT/P2.7 | Crystal oscillator output | Drives external 32-kHz crystal; internal feedback path enabled when XIN/XOUT pair is configured for LFXT1 mode. |
| 27, XIN/P2.6/TA0.1 | Crystal oscillator input | Accepts 32-kHz crystal or external clock source; also serves as Timer0_A compare output TA0.1 when not used for oscillation. |
| 28, DVSS | Digital ground reference | Common return path for digital circuitry; must be connected to system ground plane with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Five power-saving modes | Enables granular energy management: LPM0–LPM4 provide trade-offs between RAM retention, clock gating, and wake-up latency down to 0.1 µA in LPM4. |
| Integrated DCO calibration | Four factory-trimmed DCO frequencies (1/8/12/16 MHz) eliminate need for external crystal in cost-sensitive timing applications. |
| Capacitive-touch I/O capability | Up to 24 GPIO pins support capacitive sensing via built-in comparator and timer-based charge-transfer measurement - no external IC required. |
| On-chip emulation logic | Embedded Spy-Bi-Wire interface allows full-speed debugging and flash programming using only two pins (SBWTDIO + SBWTCK), reducing BOM and layout complexity. |
| No external programming voltage | Supports serial onboard programming at VCC levels (1.8–3.6 V); eliminates dedicated HV programming supply and associated safety circuitry. |
Applications
| Smart Sensor Node | Capacitive Touch Interface |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 30 seconds via UART to a gateway. IC Role / Device Role / Timing Role: Main system controller managing sensor readout, data formatting, low-power sleep/wake cycles, and UART transmission timing. Use Value: Sub-1-µs wake-up and 230 µA active current enable >5-year CR2032 battery life; integrated USCI eliminates external transceiver. |
Use Scenario: Touch slider on a portable medical device with 8-segment linear control and proximity wake-up. IC Role / Device Role / Timing Role: Dedicated capacitive-touch processor performing charge-transfer measurement, baseline tracking, and gesture decoding. Use Value: 24 touch-capable I/O pins allow direct electrode connection without multiplexers; LPM4 current of 0.1 µA sustains always-on proximity detection. |
| Energy-Harvesting Remote Monitor | Low-Cost Industrial Controller |
|
Use Scenario: Solar-powered environmental monitor harvesting ~100 µW/day, waking only on light or motion trigger. IC Role / Device Role / Timing Role: System orchestrator coordinating energy buffer management, sensor sampling, and burst RF transmission. Use Value: 0.5 µA standby current matches typical harvester leakage; Spy-Bi-Wire enables field firmware updates without connector access. |
Use Scenario: DIN-rail mounted HVAC actuator with analog setpoint input, relay drive, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Real-time control unit executing PID loop, managing relay timing, and handling UART-to-RS485 protocol translation. Use Value: 16-bit Timer_A supports precise 100-ms relay debounce and 1-ms PID execution; 8 KB flash accommodates Modbus stack + application logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2433IPW28R | Includes 10-bit 8-channel ADC; identical pinout, flash/RAM, timers, and USCI peripherals. | Required where analog sensor interfacing (e.g., thermistor, potentiometer) is needed without external ADC. | Select when analog front-end integration reduces BOM cost and board space; verify ADC reference and sampling rate match requirements. |
| MSP430FR2433IPW28R | Ferroelectric RAM (FRAM) instead of flash; 16 KB FRAM, 2 KB RAM; same 28-pin TSSOP; higher write endurance and lower active current (112 µA @ 1 MHz). | Better suited for data-logging or frequent parameter updates due to FRAM's near-infinite write cycles and zero write delay. | Choose for applications needing frequent nonvolatile storage writes or ultra-low-power logging; note different toolchain and bootloader requirements. |
Compared with MSP430G2403IPW28R, the MSP430G2433IPW28R adds essential analog acquisition capability at identical cost and footprint, while the MSP430FR2433IPW28R trades flash endurance for FRAM's instant-write performance and lower active power - both require validation of peripheral register mapping and interrupt vector alignment.
Availability
MSP430G2403IPW28R is available at Aetrix Electronics and suitable for smart sensor nodes, capacitive touch interfaces, energy-harvesting monitors, and low-cost industrial controllers requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2403IPW28R 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 power efficiency, reliability, and broad ecosystem support.
The MSP430G2x03 product line delivers ultra-low-power 16-bit microcontrollers targeting cost-sensitive, battery-operated applications such as sensor nodes, wearables, and simple human-machine interfaces where ADC is unnecessary.
FAQ
Does MSP430G2403IPW28R include an integrated analog-to-digital converter (ADC)?
No, the MSP430G2403IPW28R does not include an ADC. It belongs to the G2x03 subfamily, which omits the 10-bit ADC present in G2x33 variants like MSP430G2433IPW28R. All pin functions referencing A0–A7 or ADC10CLK are reserved and non-functional on MSP430G2403IPW28R. External ADCs must be used for analog signal acquisition.
What debug interface does MSP430G2403IPW28R support?
The MSP430G2403IPW28R supports Spy-Bi-Wire (SBW) debugging via pins 24 (RST/NMI/SBWTDIO) and 25 (TEST/SBWTCK). This two-wire interface enables full-speed emulation, flash programming, and breakpoint debugging without requiring a full 4-pin JTAG header, reducing PCB footprint and BOM count.
Can MSP430G2403IPW28R operate from a 1.8 V supply?
Yes, MSP430G2403IPW28R is fully specified for operation from 1.8 V to 3.6 V. At 1.8 V, maximum system frequency is 6 MHz per datasheet Section 5.3. This enables direct use with single-cell lithium batteries or regulated 1.8 V rails without level-shifting or voltage boosting circuitry.
How many I/O pins on MSP430G2403IPW28R support capacitive touch sensing?
Up to 24 I/O pins on MSP430G2403IPW28R support capacitive touch sensing. This includes all P1.x, P2.x, and P3.x pins (24 total in the 28-pin TSSOP package), leveraging the built-in comparator and Timer_A for charge-transfer measurement - no external touch controller is required.
Is MSP430G2403IPW28R pin-compatible with other devices in the MSP430G2x family?
Yes, MSP430G2403IPW28R shares identical pinout and package dimensions with MSP430G2433IPW28R, MSP430G2303IPW28R, and MSP430G2333IPW28R in the 28-pin TSSOP (PW28) variant. Functional differences (e.g., ADC presence) do not affect mechanical or electrical pin compatibility, enabling drop-in replacement where peripheral requirements align.
MSP430G2403IPW28R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- 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:
MSP430G2403IPW28R FAQ
1.How can I place an order for MSP430G2403IPW28R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2403IPW28R 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 MSP430G2403IPW28R reliable?
The price and inventory of MSP430G2403IPW28R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2403IPW28R is usually 5 days.
3.What payment methods are accepted for MSP430G2403IPW28R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2403IPW28R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2403IPW28R?
MSP430G2403IPW28R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2403IPW28R 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 MSP430G2403IPW28R?
For technical support, including MSP430G2403IPW28R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2403IPW28R requirements.
6.How does Aetrix verify that MSP430G2403IPW28R is sourced from the original manufacturer or authorized distributors?
All MSP430G2403IPW28R 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 MSP430G2403IPW28R meets industry standards.
7.What is the process for return or replacement of MSP430G2403IPW28R?
All MSP430G2403IPW28R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2403IPW28R, 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 MSP430G2403IPW28R part is unused and in its original packaging.
Return procedure for MSP430G2403IPW28R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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