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Texas Instruments MSP430G2303IPW20
- Part No.:
- MSP430G2303IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2303IPW20.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:918
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Product details
Overview
MSP430G2303IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in 20-pin TSSOP packaging, 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 interface and power management systems.
For engineers reviewing the MSP430G2303IPW20 datasheet, MSP430G2303IPW20 pinout, MSP430G2303IPW20 application, or MSP430G2303IPW20 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 MSP430G2303IPW20 implements a 16-bit CPU with constant generators and a digitally controlled oscillator (DCO) calibrated for 1/2/4/8/12/16 MHz operation. Its clock system supports internal VLO, external 32-kHz crystal, and digital clock sources-enabling flexible low-power timing across five power-saving modes.
Peripherals include USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), two Timer_A modules each with three capture/compare registers, brownout detection, and on-chip emulation logic. Port P1–P2 provide 16 GPIOs with interrupt capability, pullup/pulldown resistors, and capacitive-touch support-no ADC or Port P3 functionality is present.
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 | 4 KB Flash memory for program storage; 256 B RAM for data and stack-sufficient for compact firmware in sensor nodes. |
| Supply Voltage | 1.8 V to 3.6 V operating range; supports direct connection to single-cell Li-ion or dual-cell alkaline batteries. |
| Active Current | 230 µA at 1 MHz, 2.2 V; enables multi-year battery life in intermittent-sensing applications. |
| Wake-up Time | <1 µs from standby mode; critical for fast-response event-driven systems like wake-on-touch or wake-on-interrupt. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG); reduces PCB footprint vs. full 4-wire JTAG while supporting full flash programming and real-time debugging. |
| USCI Peripherals | USCI_A0 (UART/LIN/IrDA/SPI) + USCI_B0 (SPI/I²C); provides dual serial interfaces for host communication and sensor bus connectivity without external transceivers. |
Pinout & Package
Package: 20-pin TSSOP (PW20), 6.5 mm × 4.4 mm body size, surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – DVCC | Digital supply voltage | Primary 1.8–3.6 V power input for core and digital I/O; requires local 100-nF decoupling. |
| 2 – P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as timer clock input, ACLK output, or general-purpose I/O-no ADC function (unlike G2x33). |
| 3–4 – P1.1–P1.2 | General-purpose I/O | Support UART (UCA0RXD/UCA0TXD), SPI (UCA0SIMO/UCA0SOMI), and timer functions; no analog input capability. |
| 5 – P1.3/ADC10CLK/VREF-/VEREF-/A3 | Dedicated signal pin | ADC10CLK output and reference inputs are inactive; pin functions only as GPIO/TA0.0-no ADC support confirmed. |
| 6–7 – P1.4–P1.5 | Multi-function I/O | Provide SMCLK output, USCI_B0/USCI_A0 clock/enable signals, and JTAG TCK/TMS-enables debug and peripheral synchronization. |
| 14–15 – P1.6–P1.7 | Multi-function I/O | Support I²C (UCB0SCL/UCB0SDA), SPI (UCB0SIMO/UCB0SOMI), and JTAG TDI/TDO-enables mixed-protocol sensor interfacing. |
| 8–13 – P2.0–P2.5 | General-purpose I/O | Timer1_A and Timer0_A capture/compare channels (TA1.0–TA1.2, TA0.0–TA0.1); no Port P3 or ADC channels available. |
| 16–17 – RST/NMI/SBWTDIO, TEST/SBWTCK | Debug & reset | Spy-Bi-Wire interface pins; enable in-system programming and debugging with minimal PCB routing overhead. |
| 18–19 – XOUT/P2.7, XIN/P2.6/TA0.1 | Clock input/output | Support external 32-kHz crystal for RTC or high-accuracy timing; XIN also serves as TA0.1 compare output. |
| 20 – DVSS | Digital ground | Reference return path for DVCC; must be connected to system ground plane with low-inductance layout. |
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 extend battery life in always-on sensing nodes. |
| Five programmable power modes | Enables granular energy management: LPM0–LPM4 allow trade-offs between wake-up latency, peripheral activity, and current draw. |
| Capacitive-touch I/O capability | Up to 24 pins support capacitive sensing without external components-ideal for touch-button interfaces in consumer and industrial HMI. |
| Integrated USCI peripherals | Dual USCI modules eliminate need for discrete level shifters or protocol translators when connecting to I²C sensors or UART hosts. |
| Built-in brownout detector | Prevents erratic operation during voltage droop by triggering reset below programmable threshold-critical for reliable flash writes. |
| On-chip emulation logic | Spy-Bi-Wire interface allows full debug and programming using only two pins, reducing test point count and board space. |
Applications
| Smart Sensor Node | Low-Power HMI Controller |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART to gateway every 5 minutes. IC Role / Device Role / Timing Role: Main controller managing sensor readout, data formatting, and low-duty-cycle wireless transmission. Use Value: 230 µA active current and sub-µs wake-up minimize average power, enabling >5-year CR2032 battery life. |
Use Scenario: Touch-sensitive control panel for HVAC or lighting with LED feedback and button debounce. IC Role / Device Role / Timing Role: Capacitive-touch acquisition engine and LED driver controller with real-time response. Use Value: Native capacitive-touch I/O eliminates external RC networks, reducing BOM cost and PCB area by 30%. |
| Energy Monitoring Module | Industrial Status Indicator |
|
Use Scenario: AC mains monitor measuring zero-crossing and reporting over I²C to host MCU for power quality analysis. IC Role / Device Role / Timing Role: Dedicated timing and isolation interface controller handling precise edge detection and protocol translation. Use Value: Dual USCI modules allow concurrent UART diagnostics and I²C sensor data aggregation without software overhead. |
Use Scenario: DIN-rail mounted status display showing machine readiness, fault codes, and maintenance alerts via LED matrix. IC Role / Device Role / Timing Role: Real-time state manager with watchdog supervision and fail-safe LED control. Use Value: Brownout detection and 0.1 µA RAM-retention mode ensure state persistence during brief power interruptions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2203IPW20 | 2 KB Flash, 256 B RAM, identical peripheral set and pinout; lower memory capacity. | Suitable for simpler firmware with smaller code footprint; not recommended if future feature expansion is anticipated. | Select when cost sensitivity outweighs memory headroom needs and firmware size remains under 2 KB. |
| MSP430G2333IPW20 | Includes 10-bit 8-channel ADC, same Flash/RAM; otherwise identical package and pin compatibility. | Required when analog signal acquisition (e.g., thermistor, potentiometer) is part of the system architecture. | Choose only if ADC functionality is needed-pinout matches but ADC pins are unconnected on MSP430G2303IPW20. |
Compared with MSP430G2203IPW20, the MSP430G2303IPW20 offers double Flash for more complex algorithms; compared with MSP430G2333IPW20, it removes ADC circuitry to reduce cost and power, making it optimal for purely digital control tasks.
Availability
MSP430G2303IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, low-power HMI controllers, and industrial status indicators requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2303IPW20 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 over 50 years of innovation in low-power microcontrollers and signal chain technologies.
The MSP430G2x03 product line delivers cost-optimized, ultra-low-power MCUs targeting battery-operated sensor interfaces and simple control applications where ADC is unnecessary.
FAQ
Does MSP430G2303IPW20 include an integrated analog-to-digital converter (ADC)?
No, MSP430G2303IPW20 does not include an ADC. It belongs to the G2x03 family, which omits the 10-bit ADC present in G2x33 variants like MSP430G2333IPW20. Pin P1.3 is labeled with ADC10CLK/VREF-/VEREF-/A3 in documentation, but these functions are inactive-only GPIO and timer roles are implemented on MSP430G2303IPW20.
What debug interface does MSP430G2303IPW20 support?
MSP430G2303IPW20 supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG accessible via pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This interface enables full flash programming, real-time debugging, and breakpoint execution without requiring a 4-wire JTAG header, reducing PCB complexity.
Can MSP430G2303IPW20 operate from a single 1.8-V supply?
Yes, MSP430G2303IPW20 supports 1.8 V to 3.6 V operation per its recommended conditions. At 1.8 V, maximum system frequency is 6 MHz; this enables direct use with low-voltage energy harvesting sources or single-cell lithium batteries without regulation.
Is MSP430G2303IPW20 pin-compatible with MSP430G2333IPW20?
Yes, MSP430G2303IPW20 and MSP430G2333IPW20 share identical 20-pin TSSOP (PW20) packaging and pin mapping. However, ADC-related pins (e.g., P1.3, P1.4, P1.5) are functional GPIOs on MSP430G2303IPW20 but serve as analog inputs/reference on MSP430G2333IPW20-hardware design must account for this functional difference.
What serial communication protocols are supported by MSP430G2303IPW20?
MSP430G2303IPW20 integrates two USCI modules: USCI_A0 supports UART (with LIN auto-baud), IrDA, and SPI; USCI_B0 supports SPI and I²C. These enable simultaneous communication with UART-based gateways and I²C sensors-no external protocol translators are required.
MSP430G2303IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-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:
- 16
- 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:
MSP430G2303IPW20 FAQ
1.How can I place an order for MSP430G2303IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2303IPW20 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 MSP430G2303IPW20 reliable?
The price and inventory of MSP430G2303IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2303IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2303IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2303IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2303IPW20?
MSP430G2303IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2303IPW20 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 MSP430G2303IPW20?
For technical support, including MSP430G2303IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2303IPW20 requirements.
6.How does Aetrix verify that MSP430G2303IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2303IPW20 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 MSP430G2303IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2303IPW20?
All MSP430G2303IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2303IPW20, 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 MSP430G2303IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2303IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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