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Texas Instruments MSP430G2432IRSA16R
- Part No.:
- MSP430G2432IRSA16R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2432IRSA16R.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,038
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Product details
Overview
MSP430G2432IRSA16R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 8 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 16 capacitive-touch enabled I/O pins - deployed in battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2432IRSA16R datasheet, MSP430G2432IRSA16R pinout, MSP430G2432IRSA16R application, or MSP430G2432IRSA16R equivalent, key selection criteria include its QFN-16 package, 1.8–3.6 V supply range, sub-1 µs wake-up from standby mode, integrated brownout detection, and Spy-Bi-Wire debug interface compatibility.
Technical Context
The MSP430G2432IRSA16R implements a 16-bit CPU with seven addressing modes and 51 instructions, paired with a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz for rapid low-power mode exit. Its clock system delivers ACLK (LF oscillator or 32-kHz crystal), MCLK (system clock), and SMCLK (peripheral clock) with independent gating control.
Peripheral integration includes a 10-bit SAR ADC with sample-and-hold, internal 1.5 V/2.5 V reference, and DMA-assisted data transfer; USI configured for synchronous SPI or I²C master/slave operation; and Timer_A supporting PWM generation, input capture, and interval timing - all accessible via memory-mapped registers and interrupt vectors located in upper flash address space (0xFFC0–0xFFFF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generator; enables single-cycle register operations and high code efficiency. |
| Flash / RAM | 8 KB flash program memory + 256 B RAM; supports in-system programming via Spy-Bi-Wire and on-chip emulation logic. |
| ADC10 | 10-bit SAR converter with 8-channel autoscan, internal reference (1.5 V/2.5 V), 200 ksps max sampling rate, and dedicated DTC for CPU-free data handling. |
| Power Modes | One active mode + five software-selectable low-power modes (LPM0–LPM4); standby current = 0.5 µA, off-mode (RAM retention) = 0.1 µA. |
| USI Interface | Universal Serial Interface supporting hardware SPI (3-wire or 4-wire) and I²C (master/slave) with programmable clock polarity and phase. |
| Timer_A | 16-bit Timer_A3 with three capture/compare registers (TA0.0–TA0.2), supporting PWM output, input capture, and interval timing with interrupt capability per channel. |
| Supply Range | 1.8 V to 3.6 V operating voltage; supports direct connection to single-cell Li-ion or two-cell alkaline batteries without regulation. |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.4 mm pitch, exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Primary power supply | Connects to regulated 1.8–3.6 V source; decoupling capacitor required near pin for stable core operation. |
| P1.0/TA0CLK/ACLK/A0 (Pin 2) | Multi-function I/O | Configurable as timer clock input, auxiliary clock output, or ADC channel 0 analog input - selected via port control registers. |
| P1.3/ADC10CLK/VREF-/VEREF-/A3 (Pin 5) | ADC reference & input | Provides ADC conversion clock output and negative reference input; also serves as analog input A3 when ADC10 enabled. |
| P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+/TCK (Pin 6) | Multi-function I/O | Supports Timer_A capture/compare, SMCLK output, ADC positive reference, or JTAG test clock - function determined by P1SEL/P1DIR settings. |
| P1.7/SDI/SDA/A7/TDO/TDI (Pin 9) | Serial interface & debug | Shared between USI SPI data input, I²C data line, ADC channel 7, and JTAG test data I/O - mode selected by peripheral enable bits. |
| RST/NMI/SBWTDIO (Pin 10) | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line - requires external pullup for reliable reset assertion. |
| XIN/P2.6/TA0.1 (Pin 12) | Clock & timer input | Crystal oscillator input or general-purpose I/O; also functions as Timer_A compare output TA0.1 when configured in capture/compare mode. |
| DVSS (Pin 14) | Ground reference | Digital ground return path; must be connected to PCB ground plane with low-inductance trace and tied to AVSS at single point. |
| AVCC (Pin 15) | Analog power supply | Separate analog supply input; recommended to tie to DVCC through ferrite bead or LC filter to reduce digital noise coupling into ADC. |
| AVSS (Pin 13) | Analog ground | Analog ground reference for ADC and internal reference; isolated from DVSS except at single-point star ground to minimize noise. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Active mode: 220 µA @ 1 MHz, 2.2 V; standby mode: 0.5 µA; off mode (RAM retention): 0.1 µA - extends battery life in energy-constrained applications. |
| Capacitive-touch I/O | Up to 16 GPIO pins support pin-oscillator-based capacitive sensing without external components - enables touch-button interfaces with minimal BOM cost. |
| Brownout detection | Integrated circuit monitors DVCC and asserts reset if voltage drops below programmable threshold - prevents erratic behavior during power ramp-up/down. |
| On-chip emulation | Spy-Bi-Wire interface provides full debug access (breakpoints, watchpoints, memory inspection) using only two pins - eliminates need for JTAG header. |
| Programmable security | Flash protection fuse prevents unauthorized readout of firmware; security lock can be set permanently after programming - safeguards IP in production units. |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and light data at 10-second intervals for wireless transmission. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, data preprocessing, USI-based sensor communication, and low-power sleep/wake scheduling. Use Value: Sub-1 µs wake-up and 0.1 µA off-mode current enable multi-year operation on CR2032 coin cell; integrated ADC reference eliminates external voltage reference IC. |
Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals, converting them to digital values, and transmitting results via BLE module. IC Role / Device Role / Timing Role: Signal acquisition engine performing synchronized dual-channel ADC sampling, real-time filtering, and SPI communication with host MCU. Use Value: 10-bit ADC with autoscan and DTC automates multi-channel conversion without CPU intervention; 1.8 V minimum supply allows direct use of low-voltage battery chemistries. |
| Industrial Control Panel | Energy Harvesting IoT Endpoint |
|
Use Scenario: Touch-enabled HMI panel in factory automation equipment requiring robust ESD immunity and reliable button detection under variable lighting conditions. IC Role / Device Role / Timing Role: Capacitive-touch processor driving up to 16 buttons with adaptive baseline tracking and noise rejection algorithms. Use Value: Dedicated pin-oscillator circuitry enables high-sensitivity touch detection without external RC networks; built-in pullup/pulldown resistors simplify PCB layout. |
Use Scenario: Solar-powered soil moisture sensor node harvesting microwatts from small PV cells and storing energy in supercapacitors. IC Role / Device Role / Timing Role: Power-aware system manager coordinating ADC measurements, USI-based RF transceiver control, and dynamic voltage scaling based on harvested energy level. Use Value: Five configurable low-power modes allow precise trade-off between responsiveness and energy consumption; brownout detector prevents corruption during intermittent power events. |
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 |
|---|---|---|---|
| MSP430G2553IRHA40R | 40-pin QFN; 16 KB flash, 512 B RAM; adds UART, enhanced USI, and more I/O - no ADC10 calibration data in info memory segment A. | Higher I/O count and UART support suit complex sensor hubs; larger package increases board area and routing complexity. | Select when needing UART or >16 I/O; verify layout compatibility due to 40-pin vs. 16-pin footprint and different pin mapping. |
| MSP430FR2355TRHBR | Ferroelectric RAM (64 KB FRAM, 2 KB RAM); no flash wear-out; higher active current (250 µA @ 1 MHz); lacks integrated ADC reference. | Superior write endurance and faster nonvolatile storage ideal for data logging; requires external reference for precision ADC use cases. | Prefer for frequent data writes or long-life field deployments; confirm ADC accuracy requirements met without internal VREF+. |
Compared with MSP430G2432IRSA16R, the MSP430G2553IRHA40R offers expanded peripherals at the cost of larger size and higher BOM complexity, while the MSP430FR2355TRHBR trades flash endurance and write speed for higher active power and external reference dependency - making MSP430G2432IRSA16R optimal for compact, battery-sensitive, ADC-centric designs.
Availability
MSP430G2432IRSA16R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial HMI panels requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MSP430G2432IRSA16R 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 expertise in ultra-low-power design and industrial-grade reliability.
The MSP430G2xx family was engineered specifically for battery-operated measurement and sensing applications, emphasizing nanowatt-level power management, integrated analog front-ends, and minimal external component count - exemplified by the MSP430G2432IRSA16R's QFN-16 footprint and self-contained ADC subsystem.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2432IRSA16R?
The MSP430G2432IRSA16R supports a maximum ADC10 sampling rate of 200 ksps (kilo-samples per second) when using the internal oscillator or external clock source configured for optimal timing. This rate is achievable with autoscan enabled across multiple channels and DTC handling result storage - verified in the SLAS723H datasheet Section 6.11. The actual sustained throughput depends on clock configuration, reference selection, and conversion resolution settings used in the application.
Does the MSP430G2432IRSA16R include hardware UART functionality?
No, the MSP430G2432IRSA16R does not include a dedicated hardware UART peripheral. It features a Universal Serial Interface (USI) module that supports SPI and I²C protocols natively, but UART must be implemented in software using Timer_A and GPIO pins - as confirmed in the functional block diagram and peripheral summary of SLAS723H. This differs from later MSP430G2xx variants like the G2553 which integrate USCI modules with UART capability.
What debug interface does the MSP430G2432IRSA16R support?
The MSP430G2432IRSA16R supports the Spy-Bi-Wire (SBW) interface for on-chip emulation and programming, using only two pins: RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This two-wire interface replaces full JTAG, reducing PCB footprint and connector cost while providing full breakpoint, step-through, and memory inspection capabilities - documented in Section 1.5 and Figure 1-2 of SLAS723H.
Can the MSP430G2432IRSA16R operate from a single 1.8 V supply?
Yes, the MSP430G2432IRSA16R is fully specified to operate across a supply range of 1.8 V to 3.6 V, including stable execution of flash programming, ADC conversions, and USI communications at the 1.8 V minimum. This is explicitly stated in the "Low Supply Voltage Range" feature list and confirmed in the Recommended Operating Conditions table of SLAS723H - enabling direct use with single-cell lithium polymer or NiMH batteries.
How many capacitive-touch enabled I/O pins does the MSP430G2432IRSA16R support?
The MSP430G2432IRSA16R supports up to 16 capacitive-touch enabled I/O pins, implemented via integrated pin-oscillator circuitry on Port 1 and Port 2 pins. This capability is confirmed in the Features section of SLAS723H and applies to all MSP430G2x32 devices regardless of package variant - allowing robust touch-button or slider implementation without external RC networks or dedicated touch controller ICs.
MSP430G2432IRSA16R 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:
- 8KB (8K 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:
MSP430G2432IRSA16R FAQ
1.How can I place an order for MSP430G2432IRSA16R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2432IRSA16R 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 MSP430G2432IRSA16R reliable?
The price and inventory of MSP430G2432IRSA16R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2432IRSA16R is usually 5 days.
3.What payment methods are accepted for MSP430G2432IRSA16R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2432IRSA16R transactions.
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4.How is shipping managed for MSP430G2432IRSA16R?
MSP430G2432IRSA16R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2432IRSA16R 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 MSP430G2432IRSA16R?
For technical support, including MSP430G2432IRSA16R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2432IRSA16R requirements.
6.How does Aetrix verify that MSP430G2432IRSA16R is sourced from the original manufacturer or authorized distributors?
All MSP430G2432IRSA16R 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 MSP430G2432IRSA16R meets industry standards.
7.What is the process for return or replacement of MSP430G2432IRSA16R?
All MSP430G2432IRSA16R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2432IRSA16R, 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 MSP430G2432IRSA16R part is unused and in its original packaging.
Return procedure for MSP430G2432IRSA16R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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