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Texas Instruments MSP430G2132IRSA16T
- Part No.:
- MSP430G2132IRSA16T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2132IRSA16T.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,210
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Product details
Overview
MSP430G2132IRSA16T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring 1 kB Flash, 128 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 - deployed in battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2132IRSA16T datasheet, MSP430G2132IRSA16T pinout, MSP430G2132IRSA16T application, or MSP430G2132IRSA16T equivalent, key selection criteria include its 1.8–3.6 V supply range, sub-1 µs wake-up from LPM4, integrated brownout detector, Spy-Bi-Wire debug interface, and QFN-16 package with verified ADC10 channel mapping for analog sensing.
Technical Context
The MSP430G2132IRSA16T implements a 16-bit RISC CPU with constant generators and seven addressing modes, executing register-to-register instructions in one CPU clock cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF oscillator and 32-kHz crystal support - enabling flexible low-power timing across five software-selectable operating modes.
Peripherals are memory-mapped and accessible via all CPU instructions. The ADC10 module supports single-channel autoscan with internal 1.5 V reference, sample-and-hold, and DMA-triggered data transfer. USI provides hardware-level SPI master/slave and I²C master functionality without CPU intervention during transfers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 51-instruction set - enables compact, deterministic code for real-time sensor firmware. |
| Flash / RAM | 1 kB Flash (512-byte segments), 128 B RAM - sufficient for standalone capacitive-touch firmware with ADC sampling and USI communication. |
| ADC10 Resolution & Speed | 10-bit SAR, 200 ksps max - supports high-fidelity analog signal acquisition from thermistors, potentiometers, or light sensors. |
| Power Modes | Active mode (220 µA @ 1 MHz, 2.2 V); LPM4 (0.1 µA RAM retention) - extends coin-cell battery life to multi-year operation in remote sensors. |
| USI Interface | SPI/I²C dual-mode serial interface with dedicated SDO/SDI/SCL/SDA pins - eliminates need for external level shifters in I²C sensor networks. |
| Debug Interface | Spy-Bi-Wire 2-wire JTAG (SBWTDIO/SBWTCK) - enables in-system programming and real-time debugging through two pins only. |
| Supply Range | 1.8 V to 3.6 V - compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power rails without external regulators. |
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) | Supply voltage input | Primary digital core power rail; requires local 100 nF decoupling to DVSS. |
| P1.0/TA0CLK/ACLK/A0 (Pin 2) | Multi-function I/O | Configurable as Timer_A clock input, ACLK output, or ADC10 channel A0 - enables synchronized timing and analog acquisition. |
| P1.3/ADC10CLK/VREF-/VEREF-/A3 (Pin 5) | ADC control & analog input | Provides ADC conversion clock, negative reference, and analog input A3 - critical for precision ratiometric measurements. |
| P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+ (Pin 6) | Multi-function I/O | Supplies SMCLK output, ADC positive reference, and analog input A4 - supports self-referenced ADC operation without external VREF. |
| P1.7/SDI/SDA/A7 (Pin 9) | Serial data input | Shared SDI (SPI) and SDA (I²C) pin - allows dual-protocol connectivity to accelerometers, temperature sensors, or EEPROMs. |
| RST/NMI/SBWTDIO (Pin 10) | Reset & debug I/O | Combines reset assertion, non-maskable interrupt, and Spy-Bi-Wire data I/O - simplifies board-level reset and programming circuitry. |
| TEST/SBWTCK (Pin 11) | Debug clock input | Provides Spy-Bi-Wire clock during programming and debug - enables production flash programming with minimal test points. |
| XIN/P2.6/TA0.1 (Pin 12) | Clock input & timer output | Accepts 32-kHz crystal input or external clock; also serves as Timer_A output TA0.1 - supports RTC and PWM generation. |
| DVSS (Pin 14) | Digital ground | Reference return for digital I/O and core logic; must be tied to AVSS and QFN thermal pad for noise immunity. |
| AVCC (Pin 15) | Analog supply | Separate analog power rail for ADC and USI - improves SNR by isolating analog switching noise from digital domains. |
| AVSS (Pin 13) | Analog ground | Dedicated analog return path; requires star grounding with DVSS at single point near AVCC/DVCC decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 with RAM retention - enables maintenance-free deployment in energy-constrained IoT endpoints. |
| Integrated 10-bit ADC | Internal 1.5 V reference, sample-and-hold, and autoscan across 1–8 channels - eliminates external reference IC and reduces BOM count. |
| Capacitive-touch I/O | Pin-oscillator enable per P1.x pin - supports up to 8 self-capacitance touch buttons without external RC components. |
| Universal Serial Interface | Hardware SPI/I²C with independent SDO/SDI/SCL/SDA pins - ensures glitch-free communication with MEMS sensors and displays. |
| Brownout detection | Programmable threshold with interrupt capability - prevents erratic behavior during battery voltage sag in portable devices. |
Applications
| Smart Thermostat Sensor Node | Portable Medical Glucose Monitor |
|---|---|
Use Scenario: Battery-powered wall-mounted unit measuring ambient temperature/humidity and transmitting data via I²C to MCU host. IC Role / Device Role / Timing Role: Primary sensor acquisition MCU handling ADC reads, capacitive-touch button interface, and I²C slave communication. Use Value: 0.1 µA LPM4 current extends CR2032 battery life beyond 3 years; integrated VREF+ eliminates external reference drift errors. | Use Scenario: Handheld device acquiring analog glucose strip signals, performing calibration math, and displaying results on segmented LCD. IC Role / Device Role / Timing Role: Signal-conditioning controller managing 10-bit ADC sampling, timer-driven LED backlight PWM, and SPI-driven display interface. Use Value: Sub-1 µs wake-up from LPM4 ensures responsive button press detection; 200 ksps ADC captures fast electrochemical transients accurately. |
| Industrial Asset Tag | Wireless Smoke Detector Module |
Use Scenario: Small form-factor tag monitoring vibration and temperature on rotating machinery, logging data locally before BLE transmission. IC Role / Device Role / Timing Role: Data logger with ADC, Timer_A for interval sampling, and USI for SPI-connected FRAM memory. Use Value: 1 kB Flash stores firmware + 128 B RAM buffers sensor data; Spy-Bi-Wire enables field firmware updates without PCB redesign. | Use Scenario: UL-certified smoke detector using photoelectric sensor, buzzer driver, and low-power RF transceiver. IC Role / Device Role / Timing Role: System supervisor managing analog smoke chamber signal conditioning, alarm timing, and RF wake-up coordination. Use Value: Brownout detector prevents false alarms during battery replacement; 1.8 V minimum supply supports aging alkaline cells down to 1.9 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2232IRSA16 | 2 kB Flash, 256 B RAM, same peripherals and pinout - adds firmware headroom for OTA updates or larger sensor fusion algorithms. | Preferred for designs requiring >1 kB code space or future feature expansion without layout change. | Select when firmware complexity exceeds 1 kB or long-term maintainability demands extra Flash margin. |
| MSP430G2102IRSA16 | No ADC10 module - lacks analog input capability; otherwise identical clock, USI, and power architecture. | Suitable only for purely digital I/O or capacitive-touch applications without analog sensing. | Choose only if ADC is unnecessary and cost reduction is primary; not a functional substitute for ADC-dependent use cases. |
Compared with MSP430G2232IRSA16, the MSP430G2132IRSA16T trades Flash/RAM capacity for lower unit cost in fixed-function sensor nodes; versus MSP430G2102IRSA16, it adds essential 10-bit ADC capability while retaining identical power profile and footprint.
Availability
MSP430G2132IRSA16T is available at Aetrix Electronics and suitable for battery-powered sensor nodes, portable medical monitors, industrial asset tags, and wireless smoke detectors requiring stable component supply and long-lifecycle support.
Supply support for MSP430G2132IRSA16T 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The MSP430G2xx family targets ultra-low-power embedded applications where extended battery life, small footprint, and integrated analog peripherals are critical - exemplified by the MSP430G2132IRSA16T's optimized balance of Flash, ADC, and QFN packaging.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2132IRSA16T?
The MSP430G2132IRSA16T supports a maximum ADC10 sampling rate of 200 ksps under optimal conditions: 3.3 V supply, internal 1.5 V reference, and ADC10CLK sourced from SMCLK at 5 MHz. This rate enables accurate capture of fast analog transients in medical or industrial sensor applications without external oversampling hardware.
Does the MSP430G2132IRSA16T support capacitive-touch sensing on all P1.x pins?
Yes, the MSP430G2132IRSA16T supports capacitive-touch sensing on P1.0 through P1.7 via individually configurable pin-oscillators. Each P1.x pin can be enabled as a self-capacitance touch input using the P1SEL and P1DIR registers - allowing up to eight independent touch buttons without external components or dedicated touch controller ICs.
Can the MSP430G2132IRSA16T operate from a single 1.8 V supply?
Yes, the MSP430G2132IRSA16T is fully specified to operate across 1.8 V to 3.6 V, including active and all low-power modes. At 1.8 V, it delivers 16 MHz DCO performance with reduced current consumption - making it ideal for energy-harvesting or single-cell lithium applications where regulated 3.3 V rails are unavailable.
What debug interface does the MSP430G2132IRSA16T use, and how many pins are required?
The MSP430G2132IRSA16T uses the Spy-Bi-Wire (SBW) debug interface, requiring only two pins: SBWTDIO (Pin 10) and SBWTCK (Pin 11). This 2-wire implementation replaces full 4-pin JTAG, reducing test point count and PCB routing complexity while supporting full in-circuit emulation, flash programming, and real-time breakpoint debugging.
Is the ADC10 module in the MSP430G2132IRSA16T compatible with external voltage references?
Yes, the ADC10 module in the MSP430G2132IRSA16T accepts external references via VREF+ (Pin 6) and VREF− (Pin 5), supporting ratiometric or absolute measurements. When external references are used, the internal 1.5 V reference is disabled, and the ADC10 conversion accuracy depends on external reference stability and noise performance - validated in TI's SLAS723H datasheet section 6.3.
MSP430G2132IRSA16T 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:
- 1KB (1K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 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:
MSP430G2132IRSA16T FAQ
1.How can I place an order for MSP430G2132IRSA16T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2132IRSA16T 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 MSP430G2132IRSA16T reliable?
The price and inventory of MSP430G2132IRSA16T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2132IRSA16T is usually 5 days.
3.What payment methods are accepted for MSP430G2132IRSA16T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2132IRSA16T transactions.
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4.How is shipping managed for MSP430G2132IRSA16T?
MSP430G2132IRSA16T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2132IRSA16T 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 MSP430G2132IRSA16T?
For technical support, including MSP430G2132IRSA16T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2132IRSA16T requirements.
6.How does Aetrix verify that MSP430G2132IRSA16T is sourced from the original manufacturer or authorized distributors?
All MSP430G2132IRSA16T 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 MSP430G2132IRSA16T meets industry standards.
7.What is the process for return or replacement of MSP430G2132IRSA16T?
All MSP430G2132IRSA16T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2132IRSA16T, 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 MSP430G2132IRSA16T part is unused and in its original packaging.
Return procedure for MSP430G2132IRSA16T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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