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Texas Instruments MSP430G2302IRSA16T
- Part No.:
- MSP430G2302IRSA16T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2302IRSA16T.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:335
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Product details
Overview
MSP430G2302IRSA16T from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 16-pin QFN (RSA) package, featuring 4 KB Flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and support for up to 16 capacitive-touch I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2302IRSA16T datasheet, MSP430G2302IRSA16T pinout, MSP430G2302IRSA16T application, or MSP430G2302IRSA16T equivalent, this page delivers verified technical context, exact pin functions, low-power mode behavior, USI interface configuration, and validated alternative options - all specific to the MSP430G2302IRSA16T variant.
Technical Context
The MSP430G2302IRSA16T implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU cycle. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, internal LF oscillator, and 32-kHz crystal support - enabling sub-1 µs wake-up from LPM4.
It includes Spy-Bi-Wire debug interface, WDT+ configurable as interval timer or reset source, and two 8-bit I/O ports (P1 and P2) with individually programmable pullup/pulldown resistors and pin-oscillator enable for capacitive touch. ADC10 functionality is absent - confirmed by Table 1 and "ADC10 pin functions are available only on MSP430G2x32" notes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers; instruction cycle time = 62.5 ns at 16 MHz |
| Memory | 4 KB Flash (main memory), 256 B RAM; supports in-system programming via Spy-Bi-Wire |
| Power Modes | 1 active mode + 5 software-selectable low-power modes (LPM0–LPM4); LPM4 draws 0.1 µA with RAM retention |
| Timer | One 16-bit Timer_A (Timer0_A3) with three capture/compare registers; supports PWM, input capture, and interval timing |
| Communication | Universal Serial Interface (USI) supporting hardware SPI and I²C; no UART or USB |
| Supply Range | 1.8 V to 3.6 V operation; absolute max rating −0.3 V to 4.1 V on VCC–VSS |
| I/O Capability | Up to 16 capacitive-touch enabled I/O pins across P1 and P2; each pin has independent pullup/pulldown control |
Pinout & Package
Package: 16-pin QFN (RSA), 4 mm × 4 mm, 0.65 mm pitch, exposed thermal pad (to be connected to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - DVCC | Supply voltage input | Main digital supply (1.8–3.6 V); decoupling capacitor required near pin |
| 2 - P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | GPIO, Timer_A clock input, ACLK output, or analog input A0 - function selected via port control registers |
| 3 - P1.1/TA0.0/A1 | Multi-function I/O | GPIO, Timer_A CCI0A input / Out0 output, or analog input A1 |
| 4 - P1.2/TA0.1/A2 | Multi-function I/O | GPIO, Timer_A CCI1A input / Out1 output, or analog input A2 |
| 5 - P1.3/ADC10CLK/A3/VREF−/VEREF− | Dedicated analog function | ADC10 clock output and analog inputs - not used on MSP430G2302 (no ADC10); pin remains GPIO-capable but analog functions disabled |
| 6 - P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+/TCK | Multi-function I/O | GPIO, Timer_A CCI2A input / Out2 output, SMCLK output, JTAG TCK - analog reference functions inactive |
| 7 - P1.5/TA0.0/SCLK/A5/TMS | Multi-function I/O | GPIO, Timer_A Out0 output, USI clock, JTAG TMS - analog input A5 inactive |
| 8 - P1.6/TA0.1/SDO/SCL/A6/TDI/TCLK | Multi-function I/O | GPIO, Timer_A Out1 output, USI data out (SPI) or SCL (I²C), JTAG TDI - analog input A6 inactive |
| 9 - P1.7/SDI/SDA/A7/TDO/TDI | Multi-function I/O | GPIO, USI data in (SPI) or SDA (I²C), JTAG TDO/TDI - analog input A7 inactive |
| 10 - RST/NMI/SBWTDIO | Debug & reset | Active-low reset, non-maskable interrupt input, Spy-Bi-Wire data I/O - requires external pullup |
| 11 - TEST/SBWTCK | Debug interface | JTAG test mode select / Spy-Bi-Wire clock input - must be pulled low during normal operation |
| 12 - XOUT/P2.7 | Oscillator & GPIO | Crystal oscillator output or general-purpose I/O (P2.7); internal driver remains active unless P2SEL.7 cleared |
| 13 - XIN/P2.6/TA0.1 | Oscillator & GPIO | Crystal oscillator input or GPIO (P2.6) or Timer_A Out1 output - crystal mode requires both XIN/XOUT |
| 14 - DVSS | Ground reference | Digital ground plane connection; tied to QFN thermal pad for thermal and EMI performance |
| 15 - AVCC | Not connected | No internal analog supply; pin is NC - must be left unconnected or tied to DVCC only if externally buffered |
| 16 - AVSS | Not connected | No internal analog ground; pin is NC - must be left unconnected or tied to DVSS only if externally buffered |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Active mode: 220 µA @ 1 MHz, 2.2 V; LPM4 (RAM retention): 0.1 µA - enables multi-year coin-cell battery life |
| Fast wake-up capability | Sub-1 µs wake-up from LPM4 using DCO - critical for event-driven sensing and duty-cycled systems |
| Capacitive-touch I/O | Up to 16 pins support pin-oscillator-based touch detection without external components - reduces BOM cost |
| Spy-Bi-Wire debug | 2-wire interface replaces full JTAG; uses RST/NMI and TEST/SBWTCK pins - saves PCB space and routing complexity |
| Hardware USI peripheral | Dedicated SPI/I²C controller with shift register and clock control - offloads bit-banging and ensures timing compliance |
| Programmable code protection | Security fuse prevents unauthorized flash readout - protects firmware IP in production devices |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data wirelessly every 30 seconds. IC Role / Device Role / Timing Role: MSP430G2302IRSA16T acts as system controller, managing sensor reads, USI-based SPI communication with RF transceiver, and aggressive LPM3/LPM4 sleep scheduling. Use Value: 0.5 µA standby current extends CR2032 battery life beyond 2 years; built-in capacitive-touch I/O enables user interface without extra ICs. |
Use Scenario: Wearable pulse oximeter with LED drivers, photodiode signal conditioning, and Bluetooth LE interface. IC Role / Device Role / Timing Role: MSP430G2302IRSA16T sequences LED pulses via Timer_A PWM outputs, samples conditioned analog signals (via external ADC), and communicates results over USI-I²C to BLE module. Use Value: 16-bit Timer_A with three compare registers enables precise, synchronized LED timing; low-voltage operation (1.8 V) matches single-cell Li-ion discharge curve. |
| Industrial Control Panel | Energy Harvesting IoT Endpoint |
|
Use Scenario: DIN-rail mounted HMI with tactile buttons, status LEDs, and RS-485 backhaul. IC Role / Device Role / Timing Role: MSP430G2302IRSA16T scans capacitive-touch buttons, drives LEDs via GPIO, and handles USI-SPI communication with isolated RS-485 transceiver. Use Value: Pin-oscillator touch eliminates mechanical switches and debounce firmware; brownout detector ensures safe reset during 24 V DC supply fluctuations. |
Use Scenario: Solar-powered environmental monitor harvesting ~100 µW average power, requiring microamp-level quiescent draw. IC Role / Device Role / Timing Role: MSP430G2302IRSA16T wakes periodically using LPM3 with ACLK from 32-kHz crystal, reads sensors, processes data, and triggers RF transmission only when threshold exceeded. Use Value: 0.1 µA LPM4 current allows operation even under minimal light; internal DCO calibration eliminates need for external timing components. |
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 |
|---|---|---|---|
| MSP430G2232IRSA16 | 2 KB Flash, 256 B RAM, same 16-pin QFN package, identical peripherals except Timer_A has only two capture/compare registers | Limited firmware storage and reduced PWM/timing flexibility; suitable for simpler sensor polling tasks | Select when code size < 2 KB and dual-output PWM is sufficient; retains same footprint and debug interface |
| MSP430G2303IRSA16 | 4 KB Flash, 256 B RAM, adds UART peripheral and removes USI; otherwise identical clock, power, and I/O architecture | Requires UART-based communication (e.g., with GPS or legacy modules); lacks hardware SPI/I²C acceleration | Select when serial ASCII protocol dominates and SPI/I²C are unnecessary; UART simplifies host interface design |
Compared with MSP430G2232IRSA16, the MSP430G2302IRSA16T provides double Flash capacity and full three-register Timer_A for complex timing; compared with MSP430G2303IRSA16, it retains USI for efficient SPI/I²C sensor interfacing but omits UART - making it optimal for sensor-fusion nodes with I²C accelerometers and SPI flash.
Availability
MSP430G2302IRSA16T is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, industrial control panels, and energy-harvesting IoT endpoints requiring stable component supply, long-term manufacturability, and TI-qualified automotive-grade traceability.
Supply support for MSP430G2302IRSA16T 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 designed specifically for cost-sensitive, battery-operated measurement and control applications - emphasizing sub-microamp sleep currents, fast wake-up, integrated capacitive-touch I/O, and minimal external component count.
FAQ
Does the MSP430G2302IRSA16T include an integrated ADC?
No, the MSP430G2302IRSA16T does not include an ADC. It belongs to the MSP430G2x02 series, which excludes the ADC10 module. This is explicitly confirmed in Table 1 (no ADC10 channel entry), functional block diagrams (no ADC block), and repeated notes stating "ADC10 pin functions are available only on MSP430G2x32". Analog sensing requires external ADC or use of MSP430G2332IRSA16.
What is the maximum operating frequency of the MSP430G2302IRSA16T?
The MSP430G2302IRSA16T supports internal DCO frequencies up to 16 MHz, calibrated and stored in information memory segment A. The CPU executes instructions at 62.5-ns cycle time (16 MHz), and all peripherals - including Timer_A and USI - operate synchronously with MCLK derived from the DCO.
Can the MSP430G2302IRSA16T drive capacitive-touch buttons without external components?
Yes, the MSP430G2302IRSA16T supports capacitive-touch sensing on up to 16 I/O pins using its integrated pin-oscillator circuitry. No external RC networks or dedicated touch controller ICs are required - touch detection is implemented in firmware using the built-in oscillator and timing peripherals.
Is the MSP430G2302IRSA16T pin-compatible with other 16-pin MSP430G2xx devices?
Yes, the MSP430G2302IRSA16T shares identical 16-pin QFN (RSA) package dimensions, pinout, and thermal pad layout with all other MSP430G2xx devices in RSA16 package (e.g., MSP430G2202IRSA16, MSP430G2402IRSA16). However, peripheral availability (e.g., ADC, UART) and memory size differ - requiring firmware and schematic review before substitution.
What debug interface does the MSP430G2302IRSA16T support?
The MSP430G2302IRSA16T supports Spy-Bi-Wire (SBW), a 2-wire debug interface using RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). It replaces full 4-wire JTAG, reducing PCB routing overhead while maintaining full flash programming, breakpoint, and real-time register access capabilities.
MSP430G2302IRSA16T 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2302IRSA16T FAQ
1.How can I place an order for MSP430G2302IRSA16T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2302IRSA16T 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 MSP430G2302IRSA16T reliable?
The price and inventory of MSP430G2302IRSA16T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2302IRSA16T is usually 5 days.
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4.How is shipping managed for MSP430G2302IRSA16T?
MSP430G2302IRSA16T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2302IRSA16T 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 MSP430G2302IRSA16T?
For technical support, including MSP430G2302IRSA16T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2302IRSA16T requirements.
6.How does Aetrix verify that MSP430G2302IRSA16T is sourced from the original manufacturer or authorized distributors?
All MSP430G2302IRSA16T 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 MSP430G2302IRSA16T meets industry standards.
7.What is the process for return or replacement of MSP430G2302IRSA16T?
All MSP430G2302IRSA16T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2302IRSA16T, 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 MSP430G2302IRSA16T part is unused and in its original packaging.
Return procedure for MSP430G2302IRSA16T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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