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Texas Instruments MSP430G2433IPW20
- Part No.:
- MSP430G2433IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2433IPW20.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
MSP430G2433IPW20 from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 8 KB flash, 512 B RAM, a 10-bit 200-ksps ADC with 8 channels, two 16-bit Timer_A modules, USCI supporting 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 portable measurement systems.
For engineers reviewing the MSP430G2433IPW20 datasheet, MSP430G2433IPW20 pinout, MSP430G2433IPW20 application, or MSP430G2433IPW20 equivalent, key selection criteria include active-mode current (230 µA @ 1 MHz, 2.2 V), standby power (0.5 µA), wake-up time (<1 µs), TSSOP-20 package compatibility, and integrated ADC reference and autoscan capability for analog front-end simplification.
Technical Context
The MSP430G2433IPW20 implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO) calibrated to four internal frequencies up to 16 MHz. Its clock system supports multiple sources: internal DCO, 32-kHz crystal (XT1), internal VLO, and external digital clock input.
Peripherals include dual 16-bit Timer_A modules each with three capture/compare registers, USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and a 10-bit ADC with internal reference, sample-and-hold, and autoscan-exclusively available in the G2x33 family variant, not G2x03.
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 control. |
| Flash / RAM | 8 KB flash memory and 512 B RAM; sufficient for firmware with sensor processing, communication stacks, and calibration data storage. |
| ADC Resolution & Speed | 10-bit, 200-ksps sampling rate with autoscan across 8 channels; supports simultaneous multi-sensor acquisition without CPU intervention. |
| Supply Voltage Range | 1.8 V to 3.6 V; compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline battery operation without regulation. |
| Active Current @ 1 MHz | 230 µA at 1 MHz, 2.2 V; enables >1-year battery life in periodic-sampling sensor applications with 1-second wake intervals. |
| Standby Current | 0.5 µA; retains RAM and register state while minimizing energy loss during extended sleep between measurements. |
| Wake-up Time | <1 µs from standby mode; critical for low-latency event-triggered response in interrupt-driven sensor systems. |
Pinout & Package
TSSOP-20 (PW20) package: 6.5 mm × 4.4 mm body, 0.65 mm pitch, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, DVCC | Digital supply voltage | Primary 1.8–3.6 V power input for core logic and digital I/O banks; requires local decoupling. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Configurable as GPIO, Timer_A0 clock input, ACLK output, or ADC channel 0 input-enables flexible clock routing and analog sensing. |
| 5, P1.3/ADC10CLK/VREF-/VEREF-/A3 | Analog subsystem terminal | Provides ADC conversion clock output, negative reference input, and ADC channel 3-supports differential reference configuration and precise timing control. |
| 6, P1.4/SMCLK/UCB0STE/UCA0CLK/A4/VREF+/VEREF+ | Multi-function I/O | Serves as SMCLK output, SPI slave transmit enable, UART/SPI clock, ADC channel 4, and positive reference-central to synchronous peripheral interfacing and ADC biasing. |
| 16, RST/NMI/SBWTDIO | Reset and debug interface | Combines reset input, non-maskable interrupt, and Spy-Bi-Wire data I/O-enables in-system programming and debugging with minimal pins. |
| 17, TEST/SBWTCK | Debug clock input | Provides Spy-Bi-Wire test clock; required for programming and emulation when JTAG is disabled via security fuse. |
| 19–20, XIN/XOUT | Crystal oscillator terminals | Supports 32-kHz crystal connection for low-power real-time clock operation; internal load capacitance configurable for precision timing. |
| 20, DVSS | Digital ground | Reference return path for digital supply; must be connected to system ground plane with low-inductance path to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Five low-power modes | Enables granular power management: LPM0–LPM4 allow trade-offs between wake latency, RAM retention, and current draw down to 0.1 µA (RAM retention). |
| Capacitive-touch I/O | Up to 24 pins support capacitive sensing without external components-reduces BOM cost and PCB area in HMI designs. |
| Built-in brownout detector | Prevents erratic operation during supply ramp-up or battery sag by holding reset until VCC exceeds threshold (1.7 V typical). |
| On-chip emulation logic | Integrated Spy-Bi-Wire interface enables full-speed debugging and flash programming using only two pins-eliminates need for external JTAG adapter. |
| Programmable code protection | Security fuse prevents unauthorized read-out of flash contents-essential for protecting proprietary algorithms and calibration data. |
Applications
| Industrial Sensor Node | Smart Meter Interface |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor collecting data every 30 seconds and transmitting via UART to a gateway. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, timer-based wake scheduling, UART transmission, and low-power state transitions. Use Value: 0.5 µA standby current and sub-1 µs wake-up ensure >5-year battery life; integrated ADC reference eliminates external voltage reference IC. |
Use Scenario: Pulse-counting interface between mechanical utility meter and wireless communication module in residential smart meters. IC Role / Device Role / Timing Role: Edge-triggered counter capturing meter pulses, timestamping events with Timer_A, and buffering data for RF transmission. Use Value: Dedicated capture/compare registers on Timer_A provide glitch-free pulse counting; USCI UART handles reliable host protocol framing. |
| Capacitive Touch Remote | Portable Medical Monitor |
|
Use Scenario: Coin-cell-powered remote control with 8-button capacitive keypad and IR LED driver for consumer electronics. IC Role / Device Role / Timing Role: Capacitive touch acquisition engine, IR modulation generator, and low-power state manager. Use Value: Native capacitive-touch I/O reduces component count; 1.8 V minimum supply allows direct use of CR2032 battery without regulator. |
Use Scenario: Handheld blood oxygen (SpO₂) monitor acquiring analog photodiode signals, computing saturation, and displaying results on segment LCD. IC Role / Device Role / Timing Role: Analog front-end controller performing synchronized ADC sampling, digital signal processing, and LCD segment drive. Use Value: 10-bit ADC with autoscan and internal reference enables accurate ratiometric measurements; integrated LCD driver support reduces external logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2533IPW20 | 16 KB flash, 512 B RAM, same peripherals and pinout; higher flash capacity for larger firmware or bootloader + application separation. | Preferred where field-upgradable firmware or cryptographic stack requires additional code space. | Select when future firmware expansion or secure boot requirements demand >8 KB flash. |
| MSP430G2433IRHB32 | Same core specs but in 32-pin QFN (5 mm × 5 mm); adds Port P3 (8 I/O), AVCC/AVSS pins, and NC pads for enhanced analog routing. | Suitable for designs needing more I/O, dedicated analog supply isolation, or improved thermal performance. | Choose for higher I/O count, better analog noise immunity, or space-constrained layouts requiring QFN. |
Compared with MSP430G2433IPW20, the MSP430G2533IPW20 offers double flash for complex protocols or OTA updates, while the MSP430G2433IRHB32 provides extra I/O and analog supply separation-neither is pin-compatible, but both share identical peripheral architecture and software compatibility.
Availability
MSP430G2433IPW20 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, capacitive-touch remotes, and portable medical monitors requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2433IPW20 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 50 years of innovation in low-power design.
The MSP430G2xx family delivers ultra-low-power mixed-signal MCUs optimized for battery-operated measurement and sensing applications-designed to maximize operational lifetime while integrating essential analog and digital peripherals.
FAQ
What is the maximum system clock frequency supported by the MSP430G2433IPW20?
The MSP430G2433IPW20 supports a maximum system clock (MCLK) frequency of 16 MHz at VCC = 3.3 V, 12 MHz at 2.7 V, and 6 MHz at 1.8 V. This is achieved using the internal digitally controlled oscillator (DCO) with factory-calibrated frequencies. The device does not require an external crystal for full-speed operation, though XT1 supports 32-kHz crystals for low-power RTC functions.
Does the MSP430G2433IPW20 include an analog-to-digital converter?
Yes, the MSP430G2433IPW20 includes a 10-bit, 200-ksps ADC with 8 input channels, internal reference (1.5 V or 2.5 V), sample-and-hold, and autoscan capability. This ADC is exclusive to the G2x33 family (not present in G2x03 variants) and is fully integrated with DMA support for autonomous data acquisition.
What debug interface does the MSP430G2433IPW20 support?
The MSP430G2433IPW20 supports Spy-Bi-Wire (SBW) debugging via pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This two-wire interface enables full-speed emulation, flash programming, and breakpoint debugging without requiring a full 4-pin JTAG header-ideal for space-constrained PCBs.
Is the MSP430G2433IPW20 pin-compatible with other devices in the MSP430G2xx family?
The MSP430G2433IPW20 shares the same TSSOP-20 pinout with MSP430G2533IPW20 and MSP430G2333IPW20, enabling hardware reuse across flash-size variants. However, it is not pin-compatible with 28-pin or 32-pin variants (e.g., PW28 or RHB32), nor with G2x03 devices lacking ADC functionality-even if package-matched.
What power-saving modes are available on the MSP430G2433IPW20?
The MSP430G2433IPW20 offers five low-power modes: LPM0 (CPU off, peripherals active), LPM1 (DCO off), LPM2 (DCO + LF oscillator off), LPM3 (VLO only), and LPM4 (full shutdown, 0.1 µA RAM retention). Wake-up from LPM3/LPM4 occurs in under 1 µs, making it ideal for interrupt-driven sensor wake events.
MSP430G2433IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Tube
- 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:
- 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:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2433IPW20 FAQ
1.How can I place an order for MSP430G2433IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2433IPW20 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 MSP430G2433IPW20 reliable?
The price and inventory of MSP430G2433IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2433IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2433IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2433IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2433IPW20?
MSP430G2433IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2433IPW20 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 MSP430G2433IPW20?
For technical support, including MSP430G2433IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2433IPW20 requirements.
6.How does Aetrix verify that MSP430G2433IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2433IPW20 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 MSP430G2433IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2433IPW20?
All MSP430G2433IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2433IPW20, 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 MSP430G2433IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2433IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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