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Texas Instruments MSP430G2333IPW28R
- Part No.:
- MSP430G2333IPW28R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2333IPW28R.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,216
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Product details
Overview
MSP430G2333IPW28R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 4 KB flash, 256 B RAM, dual 16-bit Timer_A modules, 10-bit 200-ksps ADC with 8 channels and internal reference, USCI with UART/LIN/IrDA/SPI/I²C, and capacitive-touch-capable I/O. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and touch interfaces.
For engineers reviewing the MSP430G2333IPW28R datasheet, MSP430G2333IPW28R pinout, MSP430G2333IPW28R application, or MSP430G2333IPW28R equivalent, key selection criteria include its 28-pin TSSOP package, 24 capacitive-touch-enabled I/O pins, calibrated DCO up to 16 MHz, sub-1 µs wake-up from LPM3, and integrated brownout detection for robust low-voltage operation in portable measurement systems.
Technical Context
The MSP430G2333IPW28R implements a 16-bit CPU with constant generators and 16 registers for high code efficiency. Its clock system integrates a digitally controlled oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz), plus LF crystal (32 kHz), internal VLO, and external digital clock support - enabling flexible low-power timing across active and standby modes.
Peripherals include two independent Timer_A3 modules (each with three capture/compare registers), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and a 10-bit ADC with autoscan, sample-and-hold, and built-in voltage reference - all accessible via 24 GPIO pins, eight of which are on Port P3 (available only in 28- and 32-pin packages).
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 and efficient C compilation. |
| Flash / RAM | 4 KB flash memory and 256 B RAM; sufficient for compact firmware with sensor data processing and communication stacks. |
| ADC Resolution | 10-bit SAR ADC with 8 input channels, 200-ksps sampling rate, and internal reference; supports analog sensor interfacing without external precision references. |
| Power Consumption | 230 µA at 1 MHz/2.2 V active mode; 0.5 µA standby; 0.1 µA off mode with RAM retention - extends coin-cell battery life to years in intermittent-sensing applications. |
| Operating Voltage | 1.8 V to 3.6 V supply range; compatible with single-cell Li-ion, LiFePO₄, and alkaline batteries without regulation overhead. |
| Wake-up Time | <1 µs from LPM3 to active mode; enables rapid response to external interrupts while maintaining ultra-low average power. |
| Package | TSSOP-28 (9.7 mm × 4.4 mm); surface-mount compatible with standard reflow profiles and suitable for space-constrained PCB layouts. |
Pinout & Package
TSSOP-28 package with 28 leads, 0.65 mm pitch, and exposed thermal pad (not electrically connected). Pinout optimized for mixed-signal routing: dedicated AVCC/AVSS pins, separate analog/digital ground paths, and configurable I/O with Schmitt-trigger inputs and programmable pullup/pulldown resistors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, DVCC | Digital supply voltage | Primary 1.8–3.6 V digital power rail; decoupling capacitor required within 1 cm for stable core operation. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as timer clock input, ACLK output, or ADC channel 0 - enables synchronous timing or analog acquisition triggering. |
| 5, P1.3/ADC10CLK/VREF-/VEREF-/A3 | Analog reference & ADC input | Provides negative ADC reference (VREF−) and analog input A3; supports differential or single-ended ADC configurations. |
| 6, P1.4/SMCLK/UCB0STE/UCA0CLK/A4/VREF+/VEREF+ | System clock & reference | Delivers SMCLK to peripherals, serves as USCI clock source, and supplies positive ADC reference (VREF+) - simplifies clock tree design. |
| 24, RST/NMI/SBWTDIO | Reset & debug interface | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line - enables in-system programming and debugging with 2-wire interface. |
| 25, TEST/SBWTCK | Debug clock | Spy-Bi-Wire test clock input; used exclusively for programming and emulation - no user application function. |
| 26, XOUT/P2.7 | Oscillator output | Crystal oscillator buffer output; must be left unconnected if external crystal is not used to avoid current leakage. |
| 27, XIN/P2.6/TA0.1 | Oscillator input | Primary 32-kHz crystal input or general-purpose I/O; TA0.1 function allows timer-based event capture during crystal operation. |
| 28, DVSS | Digital ground | Reference return path for digital circuitry; requires low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Five Low-Power Modes (LPM0–LPM4) | Enables dynamic power scaling: LPM3 draws only 0.5 µA while retaining RAM and oscillator state for RTC or periodic wake-up. |
| Capacitive-Touch I/O (up to 24 pins) | Hardware-accelerated touch sensing using Timer_A and built-in comparator; eliminates need for external touch controller ICs. |
| USCI with LIN Autobaud Detection | UART mode automatically detects baud rate from LIN header byte - simplifies integration into automotive body electronics networks. |
| On-Chip Emulation (Spy-Bi-Wire) | 2-pin debug interface reduces PCB footprint and cost vs. full JTAG; supports flash programming, breakpoints, and real-time variable monitoring. |
| Brownout Detector (BOR) | Monitors VCC and triggers reset if voltage drops below programmable threshold (1.7–2.7 V); prevents erratic operation during battery sag. |
Applications
| Smart Sensor Node | Capacitive Touch Interface |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and light data every 5 minutes for wireless transmission. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, data preprocessing, USCI UART transmission, and ultra-low-power sleep scheduling. Use Value: 0.1 µA off-mode current and sub-1 µs wake-up enable multi-year operation on CR2032; integrated ADC and USCI reduce BOM count by 3 components. |
Use Scenario: Touch-sensitive control panel for HVAC or lighting with slider, wheel, and button gestures. IC Role / Device Role / Timing Role: Dedicated capacitive-touch processor using Timer_A-based charge-transfer measurement and hardware accumulation. Use Value: 24 touch-capable I/O pins eliminate external touch IC; built-in calibration and noise rejection algorithms improve reliability in noisy industrial environments. |
| Low-Cost Industrial Monitor | Portable Medical Device |
Use Scenario: DIN-rail-mounted power meter logging voltage, current, and energy consumption with local LED display. IC Role / Device Role / Timing Role: Mixed-signal hub interfacing shunt-based current sensors, voltage dividers, and 7-segment LED drivers via USCI SPI. Use Value: 10-bit ADC with internal reference ensures ±1% measurement accuracy without external precision references; 4 KB flash accommodates firmware + calibration tables. |
Use Scenario: Handheld pulse oximeter acquiring photodiode signals, computing SpO₂, and displaying results on OLED via SPI. IC Role / Device Role / Timing Role: Real-time signal processor performing synchronized ADC sampling, digital filtering, and LED drive timing control. Use Value: Dual Timer_A modules provide precise LED pulsing and ADC trigger synchronization; 1.8 V minimum operation supports single AAA battery use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2433IPW28R | 8 KB flash, 512 B RAM, same peripherals and pinout | Supports larger firmware with complex communication stacks or extended sensor fusion algorithms | Select when firmware size exceeds 4 KB or additional RAM is needed for buffering or real-time analytics. |
| MSP430G2233IPW28R | 2 KB flash, 256 B RAM, identical peripheral set and package | Targeted at minimal firmware footprints where only basic sensor readout and UART reporting are required | Choose for cost-sensitive designs with fixed, immutable firmware and no field updates or feature expansion plans. |
Compared with MSP430G2433IPW28R and MSP430G2233IPW28R, the MSP430G2333IPW28R delivers optimal balance of memory resources and cost for mid-complexity sensor edge nodes - offering 4 KB flash for OTA-capable firmware while avoiding over-provisioning seen in the G2433 variant.
Availability
MSP430G2333IPW28R is available at Aetrix Electronics and suitable for smart sensor nodes, capacitive touch interfaces, low-cost industrial monitors, and portable medical devices requiring stable component supply and long-term production continuity.
Supply support for MSP430G2333IPW28R 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 90 years of innovation in power-efficient electronics.
The MSP430G2x33 product line was designed specifically for ultra-low-power, cost-sensitive mixed-signal applications - integrating ADC, timers, and communication interfaces into compact packages for battery-operated sensor and human-interface systems.
FAQ
What is the maximum operating frequency of the MSP430G2333IPW28R?
The MSP430G2333IPW28R supports a maximum system clock frequency of 16 MHz at VCC ≥ 3.3 V, with calibrated DCO frequencies also available at 1, 8, and 12 MHz. At lower supply voltages, the maximum frequency is reduced: 12 MHz at 2.7 V and 6 MHz at 1.8 V, per the recommended operating conditions table in SLAS734G.
Does the MSP430G2333IPW28R support capacitive touch sensing?
Yes, the MSP430G2333IPW28R supports capacitive touch sensing on up to 24 I/O pins using its integrated Timer_A modules and built-in comparator. The device includes hardware-accelerated charge-transfer measurement and software libraries in MSP430Ware to implement buttons, sliders, and wheels without external components.
What debug interface does the MSP430G2333IPW28R use?
The MSP430G2333IPW28R uses the Spy-Bi-Wire (SBW) interface - a 2-pin variant of JTAG - for programming and debugging. Pins RST/NMI/SBWTDIO (Pin 24) and TEST/SBWTCK (Pin 25) provide full flash programming, breakpoint setting, and real-time register inspection via TI's MSP-FET or compatible tools.
Is the ADC on the MSP430G2333IPW28R differential or single-ended?
The 10-bit ADC on the MSP430G2333IPW28R supports both single-ended and differential input modes. Differential operation uses VREF− (e.g., P1.3) and VREF+ (e.g., P1.4) as reference inputs, while single-ended mode references AVSS. Channel selection and mode configuration are controlled via ADC10CTL1 and ADC10AE0 registers.
Can the MSP430G2333IPW28R operate from a single 1.8 V supply?
Yes, the MSP430G2333IPW28R is fully specified for operation from 1.8 V to 3.6 V. At 1.8 V, it achieves up to 6 MHz system clock frequency and maintains all peripheral functionality including ADC, USCI, and Timer_A - making it suitable for direct connection to single-cell lithium or alkaline batteries without voltage regulation.
MSP430G2333IPW28R 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:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2333IPW28R FAQ
1.How can I place an order for MSP430G2333IPW28R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2333IPW28R 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 MSP430G2333IPW28R reliable?
The price and inventory of MSP430G2333IPW28R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2333IPW28R is usually 5 days.
3.What payment methods are accepted for MSP430G2333IPW28R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2333IPW28R transactions.
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4.How is shipping managed for MSP430G2333IPW28R?
MSP430G2333IPW28R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2333IPW28R 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 MSP430G2333IPW28R?
For technical support, including MSP430G2333IPW28R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2333IPW28R requirements.
6.How does Aetrix verify that MSP430G2333IPW28R is sourced from the original manufacturer or authorized distributors?
All MSP430G2333IPW28R 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 MSP430G2333IPW28R meets industry standards.
7.What is the process for return or replacement of MSP430G2333IPW28R?
All MSP430G2333IPW28R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2333IPW28R, 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 MSP430G2333IPW28R part is unused and in its original packaging.
Return procedure for MSP430G2333IPW28R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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