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Texas Instruments MSP430G2303IPW28R
- Part No.:
- MSP430G2303IPW28R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2303IPW28R.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,979
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Product details
Overview
MSP430G2303IPW28R from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in TSSOP-28 package, featuring 4 KB Flash, 256 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-enabled industrial controls.
For engineers reviewing the MSP430G2303IPW28R datasheet, MSP430G2303IPW28R pinout, MSP430G2303IPW28R application, or MSP430G2303IPW28R equivalent, key selection criteria include active-mode current (230 µA @ 1 MHz, 2.2 V), wake-up time (<1 µs from standby), Spy-Bi-Wire debug interface, and absence of integrated ADC - distinguishing it from MSP430G2333 variants.
Technical Context
The MSP430G2303IPW28R implements a 16-bit CPU with constant generators and six operating modes optimized for energy-constrained systems. Its clock system integrates a digitally controlled oscillator (DCO) with four factory-calibrated frequencies up to 16 MHz, plus support for external 32-kHz crystal and internal VLO.
Peripheral integration includes dual 16-bit Timer_A units (each with three capture/compare registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and full JTAG/Spy-Bi-Wire emulation. Port P3 - available only on 28-pin and 32-pin packages - provides eight additional I/O pins with pullup/pulldown control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables high code efficiency in memory-constrained embedded firmware. |
| Flash / RAM | 4 KB Flash program memory and 256 B RAM; sufficient for compact sensor firmware with real-time control loops. |
| Supply Voltage | 1.8 V to 3.6 V operation; supports direct connection to single-cell Li-ion, alkaline, or coin-cell batteries without regulation. |
| Active Current | 230 µA at 1 MHz, 2.2 V; enables multi-year battery life in intermittently active sensor endpoints. |
| Wake-up Time | <1 µs from LPM3 standby mode; critical for responsive interrupt-driven event detection in low-duty-cycle systems. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG); reduces PCB footprint and routing complexity versus full 4-wire JTAG. |
| I/O Count | 24 capacitive-touch-enabled GPIO pins across Ports P1–P3; supports self-capacitive touch buttons/sliders without external ICs. |
Pinout & Package
TSSOP-28 package (9.7 mm × 4.4 mm), lead pitch 0.65 mm, thermally enhanced for reliable operation in industrial ambient temperatures.
| 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. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as timer clock input, auxiliary clock output, or general-purpose pin; no ADC function (MSP430G2303 lacks ADC). |
| 24, RST/NMI/SBWTDIO | Reset and debug data I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line; shared pin reduces debug footprint. |
| 25, TEST/SBWTCK | Test clock input | Enables Spy-Bi-Wire programming and debug; must be pulled high during normal operation. |
| 26, XOUT/P2.7 | Crystal oscillator output | Drives external 32-kHz crystal; internal load capacitance configurable via register settings. |
| 27, XIN/P2.6/TA0.1 | Crystal oscillator input | Accepts 32-kHz crystal or external clock source; also serves as Timer0_A compare output. |
| 28, DVSS | Digital ground reference | Return path for DVCC; must be connected to system ground plane with low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Standby current of 0.5 µA and off-mode RAM retention at 0.1 µA enable decade-scale battery life in sleep-dominated applications. |
| Integrated communication peripherals | USCI_A0 supports LIN-compliant automatic baud-rate detection and IrDA encoding; USCI_B0 provides hardware I²C master/slave with clock stretching. |
| Capacitive-touch I/O | All 24 GPIO pins support capacitive sensing via built-in charge-transfer logic - no external RC network or dedicated touch controller required. |
| Factory-calibrated DCO | Four internal DCO frequencies (1/8/12/16 MHz) calibrated at production; eliminates need for external crystal in cost-sensitive timing applications. |
| Programmable security fuse | On-chip code protection prevents unauthorized readout of Flash contents; irreversible once blown. |
Applications
| Smart Sensor Node | Industrial Touch Panel |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling (via external ADC), serial communication, and low-power sleep scheduling. Use Value: 230 µA active current and sub-µs wake-up minimize average power, extending AA-battery life beyond 5 years at 10-second sampling intervals. |
Use Scenario: Local HMI on HVAC control panel with 8-button capacitive keypad and status LEDs. IC Role / Device Role / Timing Role: Dedicated touch controller and LED driver, interfacing with host MCU via I²C. Use Value: Native capacitive-touch I/O eliminates BOM cost of external touch IC; 24 GPIOs support button matrix + LED drivers without port expansion. |
| Energy Meter Interface | Wireless Sensor Transceiver Hub |
Use Scenario: Pulse-counting interface between mechanical utility meter and LoRaWAN module. IC Role / Device Role / Timing Role: Edge signal conditioner capturing meter pulses, debouncing inputs, and buffering data for wireless transmission. Use Value: Timer_A capture mode provides precise edge-timing resolution; 0.5 µA standby current ensures minimal drain during idle periods between pulses. |
Use Scenario: Sub-GHz RF transceiver companion MCU aggregating data from multiple analog sensors before RF transmission. IC Role / Device Role / Timing Role: Data concentrator and protocol translator between analog sensors (via external ADC) and RF SoC UART interface. Use Value: USCI_A0 UART with automatic LIN-style baud detection simplifies synchronization with variable-rate RF modules; Spy-Bi-Wire enables field firmware updates over same 2-wire interface. |
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 |
|---|---|---|---|
| MSP430G2333IPW28R | Includes 10-bit 8-channel ADC; identical Flash/RAM, timers, USCI, and package. | Required when analog sensor signals (e.g., thermistor, potentiometer) must be digitized on-chip without external ADC. | Select MSP430G2333IPW28R if onboard ADC is needed; otherwise MSP430G2303IPW28R offers lower cost and same power/performance for digital-only I/O tasks. |
| MSP430G2233IPW28R | 2 KB Flash, 256 B RAM, same peripherals except reduced memory; pin-compatible TSSOP-28. | Suitable for simpler firmware with smaller code footprint, e.g., basic GPIO sequencers or fixed-function controllers. | Choose MSP430G2233IPW28R only when firmware size is ≤2 KB; MSP430G2303IPW28R provides 100% more Flash for future feature expansion or bootloader space. |
Compared with MSP430G2333IPW28R and MSP430G2233IPW28R, the MSP430G2303IPW28R delivers optimal balance of memory headroom (4 KB Flash), peripheral richness, and cost - making it ideal for digital-centric, ultra-low-power designs where ADC is handled externally or not required.
Availability
MSP430G2303IPW28R is available at Aetrix Electronics and suitable for smart sensor nodes, industrial touch panels, energy meter interfaces, and wireless sensor transceiver hubs requiring stable component supply and long-term industrial availability.
Supply support for MSP430G2303IPW28R 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 and embedded processing solutions, with decades of expertise in ultra-low-power microcontrollers and precision analog signal chains.
The MSP430G2x03 product line targets cost-sensitive, battery-operated applications demanding minimal power consumption, integrated mixed-signal peripherals, and robust debug capability - especially where external ADC or higher memory is unnecessary.
FAQ
Does MSP430G2303IPW28R include an integrated analog-to-digital converter (ADC)?
No, the MSP430G2303IPW28R does not contain an ADC. It belongs to the G2x03 family, which omits the 10-bit ADC present in the G2x33 variants (e.g., MSP430G2333IPW28R). All analog signal conversion must be performed by an external ADC or omitted entirely. This distinction is confirmed in Section 1.3 of the SLAS734G datasheet and Table 3-1 device comparison.
What debug interface does MSP430G2303IPW28R support?
The MSP430G2303IPW28R supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG implemented on pins RST/NMI/SBWTDIO (Pin 24) and TEST/SBWTCK (Pin 25). It enables full flash programming, breakpoint debugging, and real-time register inspection without requiring a 4-wire JTAG header. SBW is documented in Section 5.37 of the SLAS734G datasheet.
Is MSP430G2303IPW28R pin-compatible with other devices in the MSP430G2x03/G2x33 family?
Yes, the MSP430G2303IPW28R shares identical pinout and electrical characteristics with all TSSOP-28 variants in its family, including MSP430G2203IPW28R, MSP430G2403IPW28R, MSP430G2233IPW28R, MSP430G2333IPW28R, and MSP430G2433IPW28R. Pin mapping is verified in Figure 4-2 and Table 4-1 of SLAS734G, confirming consistent terminal functions across these devices.
What is the maximum system clock frequency supported by MSP430G2303IPW28R?
The MSP430G2303IPW28R supports a maximum MCLK frequency of 16 MHz when VCC ≥ 3.3 V, 12 MHz at VCC ≥ 2.7 V, and 6 MHz at VCC ≥ 1.8 V, per Section 5.3 Recommended Operating Conditions in SLAS734G. These limits apply to the main CPU clock (MCLK); SMCLK and ACLK may operate at lower frequencies depending on source configuration.
How many I/O pins on MSP430G2303IPW28R support capacitive touch sensing?
All 24 GPIO pins across Ports P1, P2, and P3 support capacitive touch sensing using the built-in charge-transfer method. This capability is explicitly stated in Section 1.1 Features and confirmed in Section 1.3 Description of the SLAS734G datasheet. Port P3 (Pins 9–21 in PW28) is available only on 28-pin and 32-pin packages, completing the 24-pin count.
MSP430G2303IPW28R 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:
- 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:
MSP430G2303IPW28R FAQ
1.How can I place an order for MSP430G2303IPW28R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2303IPW28R 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 MSP430G2303IPW28R reliable?
The price and inventory of MSP430G2303IPW28R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2303IPW28R is usually 5 days.
3.What payment methods are accepted for MSP430G2303IPW28R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2303IPW28R transactions.
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4.How is shipping managed for MSP430G2303IPW28R?
MSP430G2303IPW28R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2303IPW28R 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 MSP430G2303IPW28R?
For technical support, including MSP430G2303IPW28R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2303IPW28R requirements.
6.How does Aetrix verify that MSP430G2303IPW28R is sourced from the original manufacturer or authorized distributors?
All MSP430G2303IPW28R 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 MSP430G2303IPW28R meets industry standards.
7.What is the process for return or replacement of MSP430G2303IPW28R?
All MSP430G2303IPW28R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2303IPW28R, 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 MSP430G2303IPW28R part is unused and in its original packaging.
Return procedure for MSP430G2303IPW28R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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