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Texas Instruments MSP430G2332IRSA16T
- Part No.:
- MSP430G2332IRSA16T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2332IRSA16T.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
MSP430G2332IRSA16T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 4 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, one 16-bit Timer_A with three capture/compare registers, USI supporting SPI and I²C, and up to 8 capacitive-touch enabled I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2332IRSA16T datasheet, MSP430G2332IRSA16T pinout, MSP430G2332IRSA16T application, or MSP430G2332IRSA16T equivalent, key selection criteria include its QFN-16 package footprint, 10-bit ADC channel count and reference architecture, Spy-Bi-Wire debug interface, low-power mode timing (sub-1 µs wake-up), and verified compatibility with MSP430x2xx Family User's Guide (SLAU144).
Technical Context
The MSP430G2332IRSA16T implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF oscillator and 32-kHz crystal support - all configurable via BCSCTL registers.
Peripherals are memory-mapped and accessible via full instruction set; ADC10 uses dedicated registers (ADC10CTL0/1, ADC10MEM) and supports DMA-triggered autoscan across 8 analog inputs. Timer_A3 provides three independent capture/compare channels with interrupt capability on overflow and each CCR, enabling PWM, input capture, and interval timing without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 51-instruction set - enables single-cycle register operations and compact firmware for resource-constrained designs. |
| Flash / RAM | 4 KB flash / 256 B RAM - sufficient for standalone sensor firmware with ADC data buffering and basic communication stacks. |
| ADC Resolution & Speed | 10-bit SAR, 200 kSPS with internal reference and autoscan - supports simultaneous sampling of up to 8 analog sensors without external reference or timing control logic. |
| Power Modes | Active mode: 220 µA @ 1 MHz, 2.2 V; LPM4: 0.1 µA RAM retention - enables multi-year operation on coin-cell batteries in intermittent-sensing applications. |
| Communication | USI module supporting hardware SPI and I²C - eliminates bit-banging overhead and ensures deterministic timing for interfacing with EEPROMs, temperature sensors, or displays. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) - allows in-system programming and real-time debugging using TI MSP-FET or compatible tools without full 4-pin JTAG header. |
| Supply Range | 1.8 V to 3.6 V - compatible with single Li-ion, two alkaline, or regulated 3.3 V rails without level-shifting circuitry. |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.4 mm pitch, exposed thermal pad (recommended connection to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Supply voltage input | Primary digital power rail; requires local 100 nF decoupling to DVSS for stable core operation. |
| P1.0/TA0CLK/ACLK/A0 (Pin 2) | Multi-function I/O | Configurable as timer clock input, ACLK output, or ADC input A0 - enables flexible clock tree routing and analog signal acquisition on same pin. |
| P1.3/ADC10CLK/VREF-/VEREF-/A3 (Pin 5) | ADC reference & input | Provides negative ADC reference (VREF-/VEREF-) and analog input A3 - supports ratiometric measurements and differential reference configurations. |
| P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+ (Pin 6) | Multi-function I/O | Delivers positive ADC reference (VREF+/VEREF+) and SMCLK output - allows synchronous sampling with peripheral clocks and precision reference sourcing. |
| P1.6/TA0.1/SDO/SCL/A6 (Pin 8) | USI & timer output | Functions as SPI data out (SDO), I²C clock (SCL), or Timer_A compare output - supports dual-role peripheral interfacing without GPIO multiplexing conflicts. |
| RST/NMI/SBWTDIO (Pin 16) | Reset & debug I/O | Combines reset assertion, non-maskable interrupt, and Spy-Bi-Wire data I/O - reduces board footprint by consolidating critical debug and control signals. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 with RAM retention enables >10-year battery life in wake-on-event sensor nodes using coin cells. |
| Integrated 10-bit ADC | Hardware autoscan across 8 channels with internal 1.5 V reference eliminates external reference ICs and reduces BOM cost by $0.15–$0.30. |
| Capacitive-touch I/O | Up to 8 pins support pin-oscillator-based touch sensing - enables direct integration of buttons/sliders without dedicated touch controller IC. |
| Calibrated DCO | Factory-trimmed DCO frequencies at 1/8/12/16 MHz allow precise timing without external crystal - cuts component count and PCB area in cost-sensitive designs. |
| Programmable security fuse | On-chip code protection prevents firmware extraction via Spy-Bi-Wire - meets basic IP protection requirements for OEM sensor modules. |
Applications
| Environmental Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered wireless node measuring temperature, humidity, and ambient light every 30 seconds, then transmitting via BLE module. IC Role / Device Role / Timing Role: Central MCU managing sensor polling, ADC conversion, data preprocessing, and SPI communication with radio IC. Use Value: Sub-1 µs wake-up and 0.1 µA LPM4 current extend CR2032 battery life beyond 3 years while maintaining responsive event detection. | Use Scenario: Handheld pulse oximeter acquiring analog PPG signals, computing SpO₂, and displaying results on segmented LCD. IC Role / Device Role / Timing Role: Signal acquisition controller synchronizing 10-bit ADC sampling at 200 ksps with LED drive timing and LCD refresh. Use Value: Integrated 1.5 V ADC reference and autoscan enable accurate ratiometric PPG measurements without external precision references. |
| Smart Home Button Panel | Industrial Asset Tracker |
Use Scenario: Wall-mounted touch panel with 6 capacitive buttons controlling lighting, HVAC, and blinds via Zigbee coordinator. IC Role / Device Role / Timing Role: Touch interface processor detecting button presses and communicating commands over UART to main gateway MCU. Use Value: Built-in pin-oscillator touch engine eliminates need for separate touch controller, reducing BoM and layout complexity. | Use Scenario: GPS-enabled tracker logging location and temperature every 5 minutes, sleeping between transmissions to conserve energy. IC Role / Device Role / Timing Role: Power management and sensor hub coordinating GPS fix, thermistor reading, and RTC wake-up events. Use Value: Five software-selectable low-power modes and brownout detector ensure reliable operation during battery voltage sag in remote deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2432IRSA16 | 8 KB flash, same 256 B RAM, identical peripherals and pinout - differs only in flash size. | Required when firmware exceeds 4 KB or future-proofing for feature expansion is needed. | Select if bootloader, OTA updates, or complex sensor fusion algorithms demand additional code space. |
| MSP430FR2355TRHBR | Ferroelectric RAM (6.75 KB FRAM), no flash wear-out, 12-bit ADC, enhanced USCI (UART/SPI/I²C), but larger 32-pin VQFN package. | Preferred for high-write-cycle logging or where ADC resolution >10 bits is required. | Choose when long-term data logging reliability or higher-resolution analog acquisition outweighs QFN-16 footprint constraints. |
Compared with MSP430G2432IRSA16, the MSP430G2332IRSA16 trades flash capacity for lower unit cost and identical low-power performance; versus MSP430FR2355TRHBR, it offers smaller footprint and proven toolchain support but lacks FRAM endurance and 12-bit ADC precision.
Availability
MSP430G2332IRSA16T is available at Aetrix Electronics and suitable for environmental monitoring, portable medical devices, smart home interfaces, and industrial asset tracking requiring stable component supply and long-lifecycle support.
Supply support for MSP430G2332IRSA16T 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 decades of microcontroller innovation.
The MSP430G2xx series was designed specifically for ultra-low-power sensing and measurement applications, emphasizing sub-µA sleep currents, fast wake-up, and integrated analog peripherals to minimize external components.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2332IRSA16T?
The MSP430G2332IRSA16T supports a maximum ADC10 sampling rate of 200 kSPS under specified conditions (VCC ≥ 2.2 V, ADC10CLK = 5 MHz). This rate is achievable using the internal oscillator or external clock source, and the autoscan feature allows sequential conversion across all 8 enabled analog inputs without CPU intervention - a capability confirmed in the SLAS723H datasheet Section 14.
Does the MSP430G2332IRSA16T support hardware UART communication?
No, the MSP430G2332IRSA16T does not include a dedicated UART peripheral. It features a Universal Serial Interface (USI) that supports hardware SPI and I²C only. UART functionality must be implemented in firmware using Timer_A outputs and GPIO pins - a method documented in TI Application Report SLAA333 and validated for baud rates up to 9600 bps in low-power modes.
What is the function of the exposed thermal pad on the MSP430G2332IRSA16T QFN package?
The exposed thermal pad on the MSP430G2332IRSA16T QFN package (RSA16) is electrically connected to DVSS and serves as a primary thermal dissipation path. TI recommends soldering it directly to a solid DVSS copper plane on the PCB to maintain junction temperature within specifications during sustained active-mode operation - a requirement specified in the SLAS723H Package Mechanical Data section.
Can the MSP430G2332IRSA16T operate reliably at 3.6 V supply voltage?
Yes, the MSP430G2332IRSA16T is fully specified to operate across 1.8 V to 3.6 V per Absolute Maximum Ratings and Recommended Operating Conditions in SLAS723H. At 3.6 V, it achieves maximum DCO frequency (16 MHz) and supports full-speed ADC operation (200 kSPS) with improved noise margin - verified in electrical characteristics Tables 1–3 of the datasheet.
How many I/O pins on the MSP430G2332IRSA16T support capacitive touch sensing?
The MSP430G2332IRSA16T supports capacitive touch sensing on up to 8 I/O pins (P1.0–P1.7), as confirmed in the "Features" section of SLAS723H and functional block diagrams. Each pin includes dedicated pin-oscillator circuitry controllable via P1SEL and CAPD registers, enabling self-capacitance or mutual-capacitance touch implementations without external components.
MSP430G2332IRSA16T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-VQFN Exposed Pad
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI, USI
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 10
- 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:
MSP430G2332IRSA16T FAQ
1.How can I place an order for MSP430G2332IRSA16T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2332IRSA16T 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 MSP430G2332IRSA16T reliable?
The price and inventory of MSP430G2332IRSA16T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2332IRSA16T is usually 5 days.
3.What payment methods are accepted for MSP430G2332IRSA16T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2332IRSA16T transactions.
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4.How is shipping managed for MSP430G2332IRSA16T?
MSP430G2332IRSA16T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2332IRSA16T 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 MSP430G2332IRSA16T?
For technical support, including MSP430G2332IRSA16T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2332IRSA16T requirements.
6.How does Aetrix verify that MSP430G2332IRSA16T is sourced from the original manufacturer or authorized distributors?
All MSP430G2332IRSA16T 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 MSP430G2332IRSA16T meets industry standards.
7.What is the process for return or replacement of MSP430G2332IRSA16T?
All MSP430G2332IRSA16T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2332IRSA16T, 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 MSP430G2332IRSA16T part is unused and in its original packaging.
Return procedure for MSP430G2332IRSA16T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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