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Texas Instruments MSP430G2252IRSA16R
- Part No.:
- MSP430G2252IRSA16R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2252IRSA16R.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,139
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Product details
Overview
MSP430G2252IRSA16R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller featuring a 10-bit 200-ksps ADC, Universal Serial Interface (USI) supporting SPI and I²C, one 16-bit Timer_A with three capture/compare registers, on-chip comparator, and brownout detection. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2252IRSA16R datasheet, MSP430G2252IRSA16R pinout, MSP430G2252IRSA16R application, or MSP430G2252IRSA16R equivalent, key selection criteria include ADC10 channel count, QFN-16 package footprint, Spy-Bi-Wire debug interface support, and capacitive-touch I/O capability on up to 16 pins.
Technical Context
The MSP430G2252IRSA16R implements a 16-bit CPU with constant generators and seven addressing modes, enabling efficient register-based execution at up to 16 MHz via its digitally controlled oscillator (DCO). Its clock system integrates ACLK (LF oscillator or 32-kHz crystal), SMCLK, and MCLK with four factory-calibrated DCO frequencies.
It supports five software-selectable low-power modes-including LPM4 with 0.1 µA off-mode current-and features integrated peripherals including USI for synchronous serial communication, Comparator_A+ with eight input channels, and Timer_A3 with three capture/compare registers for PWM and timing functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle time |
| Flash / RAM | 2 KB flash memory and 256 B RAM-sufficient for compact firmware with ADC data buffering |
| ADC Resolution | 10-bit SAR ADC with internal reference, sample-and-hold, autoscan, and 200-ksps max sampling rate |
| Supply Voltage | 1.8 V to 3.6 V-enables direct operation from single Li-ion or two alkaline cells |
| Active Current | 220 µA at 1 MHz and 2.2 V-optimized for extended battery life in intermittent-sensing applications |
| Standby Current | 0.5 µA-supports long-duration sleep between sensor readings without external wake-up circuitry |
| Package | 16-pin QFN (RSA) with 3 mm × 3 mm footprint and exposed thermal pad-ideal for space-constrained PCBs |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.4 mm pitch, with exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Digital supply voltage | Primary power rail for core logic and digital I/O; requires local 100-nF decoupling |
| P1.0/TA0CLK/ACLK/A0/CA0 (Pin 2) | Multi-function I/O | Configurable as timer clock input, ACLK output, ADC channel 0, or comparator input A0 |
| P1.3/ADC10CLK/CAOUT/A3/VREF-/VEREF-/CA3 (Pin 5) | ADC & comparator terminal | Provides ADC conversion clock output, comparator output, analog input A3, and negative reference input |
| P1.4/SMCLK/A4/VREF+/VEREF+/CA4/TCK (Pin 6) | Multi-function I/O | Supplies SMCLK output, ADC positive reference, comparator input A4, and JTAG test clock |
| RST/NMI/SBWTDIO (Pin 10) | Reset & debug interface | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line |
| TEST/SBWTCK (Pin 11) | Debug interface | Test mode select and Spy-Bi-Wire clock input-required for programming and emulation |
| XIN/P2.6/TA0.1 (Pin 12) | Oscillator & timer input | Crystal oscillator input or timer compare output TA0.1; must be configured for crystal use before enabling LF clock |
| DVSS (Pin 14) | Digital ground | Reference return path for digital circuits; tied to QFN thermal pad for thermal management |
| AVCC (Pin 15) | Analog supply | Separate analog power rail-must be filtered and decoupled independently from DVCC |
| AVSS (Pin 13) | Analog ground | Isolated analog reference return-separate from DVSS to minimize noise coupling into ADC |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode (RAM retention), 0.5 µA standby, and sub-µs wake-up enable energy harvesting and coin-cell longevity |
| Integrated 10-bit ADC | 200-ksps sampling with internal reference, autoscan, and DMA-like data transfer control reduces CPU load during sensor acquisition |
| Universal Serial Interface (USI) | Hardware SPI/I²C support eliminates bit-banging overhead and ensures deterministic timing for sensor or EEPROM interfacing |
| Capacitive-touch I/O | Up to 16 pins support pin-oscillator-based touch sensing-no external components required for proximity or button interfaces |
| Spy-Bi-Wire debug | Two-wire JTAG-compatible interface enables in-system programming and real-time debugging using TI's MSP-FET toolset |
Applications
| Environmental Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor collecting data every 30 seconds and transmitting via BLE module. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, USI-based sensor communication, and low-power state transitions. Use Value: 0.5 µA standby current extends 200-mAh coin cell life beyond 5 years; integrated ADC eliminates external signal conditioning ICs. | Use Scenario: Wearable pulse oximeter acquiring analog photodiode signals and computing SpO₂ in real time. IC Role / Device Role / Timing Role: Signal acquisition engine performing synchronized dual-channel ADC sampling and digital filtering. Use Value: 10-bit ADC with internal reference and autoscan enables precise ratiometric measurements; 220 µA active current allows continuous operation on small Li-Po cells. |
| Smart Meter Tamper Detection | Industrial Control Panel |
Use Scenario: Utility meter detecting enclosure opening or magnetic tampering via reed switch and Hall sensor inputs. IC Role / Device Role / Timing Role: Low-power event monitor using comparator inputs and interrupt-driven wake-up from LPM4. Use Value: Brownout detector and comparator_A+ provide reliable voltage supervision and analog threshold detection without external comparators. | Use Scenario: HMI panel with capacitive-touch buttons, LED indicators, and RS-485 communication to PLC. IC Role / Device Role / Timing Role: Front-end controller handling touch decoding, LED PWM dimming, and UART-to-USI bridging. Use Value: 16 capacitive-touch enabled I/O pins eliminate dedicated touch controller; Timer_A3 generates stable LED PWM with minimal CPU intervention. |
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 |
|---|---|---|---|
| MSP430G2352IRSA16 | 4-channel ADC10 vs. 2-channel on MSP430G2252IRSA16; identical package, clock, and USI specs | Supports multi-sensor analog acquisition where ≥3 analog inputs are required | Select when additional ADC channels or comparator inputs are needed without changing PCB layout |
| MSP430G2232IRSA16 | No ADC10 module; retains USI, Timer_A, comparator, and same power profile; 128 B RAM vs. 256 B | Suitable for digital-only control tasks with analog threshold monitoring only | Choose when ADC functionality is unnecessary and cost reduction is prioritized over analog flexibility |
Compared with MSP430G2352IRSA16 and MSP430G2232IRSA16, the MSP430G2252IRSA16 delivers optimal balance of ADC channel count, memory size, and QFN-16 footprint for mid-complexity sensor edge nodes requiring two analog inputs and low standby power.
Availability
MSP430G2252IRSA16R is available at Aetrix Electronics and suitable for environmental monitoring, portable medical devices, smart metering, and industrial HMI applications requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2252IRSA16R 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 MCU innovation.
The MSP430G2xx family was designed specifically for ultra-low-power sensing and measurement applications, emphasizing energy efficiency, integrated analog peripherals, and rapid wake-up capability in compact packages.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2252IRSA16R?
The MSP430G2252IRSA16R supports a maximum ADC10 sampling rate of 200 ksps. This performance is achievable when using the internal reference and configuring the ADC10CLK source appropriately-typically derived from the DCO or SMCLK. The device's 10-bit SAR architecture ensures consistent resolution across this range, making it suitable for dynamic sensor signal capture in applications like vibration monitoring or audio preprocessing.
Does the MSP430G2252IRSA16R support hardware I²C communication?
Yes, the MSP430G2252IRSA16R supports hardware I²C communication via its Universal Serial Interface (USI) module. When configured in I²C mode, the USI uses P1.6 (SCL) and P1.7 (SDA) pins with built-in start/stop detection and address matching. No bit-banging is required, and the module handles clock stretching and ACK/NACK generation autonomously-reducing firmware overhead compared to software-implemented I²C stacks.
How many I/O pins on the MSP430G2252IRSA16R support capacitive-touch sensing?
The MSP430G2252IRSA16R supports capacitive-touch sensing on up to 16 I/O pins. This capability leverages the integrated PinOsc module, which converts each configurable I/O into a relaxation oscillator whose frequency shifts with finger proximity. Implementation requires no external components, and the MSP430G2252IRSA16R's low-power design allows continuous touch scanning at sub-µA average current when combined with appropriate duty cycling.
What debug interface does the MSP430G2252IRSA16R use, and what pins are required?
The MSP430G2252IRSA16R uses the two-wire Spy-Bi-Wire (SBW) interface for debugging and programming. It requires only two pins: RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This interface is fully compatible with TI's MSP-FET programmers and Code Composer Studio, enabling full-speed emulation, breakpoint setting, and flash programming without occupying additional GPIO resources.
Can the MSP430G2252IRSA16R operate from a single 1.8-V supply, and what are the implications?
Yes, the MSP430G2252IRSA16R is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, the maximum CPU frequency is reduced to approximately 1 MHz, but all peripherals-including ADC10, USI, and Timer_A-remain functional. This enables direct integration with energy-harvesting sources or single-cell LiFePO₄ batteries, though ADC accuracy may require verification under low-VCC conditions per the datasheet's electrical characteristics table.
MSP430G2252IRSA16R 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:
- 2KB (2K 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:
MSP430G2252IRSA16R FAQ
1.How can I place an order for MSP430G2252IRSA16R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2252IRSA16R 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 MSP430G2252IRSA16R reliable?
The price and inventory of MSP430G2252IRSA16R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2252IRSA16R is usually 5 days.
3.What payment methods are accepted for MSP430G2252IRSA16R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2252IRSA16R transactions.
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4.How is shipping managed for MSP430G2252IRSA16R?
MSP430G2252IRSA16R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2252IRSA16R 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 MSP430G2252IRSA16R?
For technical support, including MSP430G2252IRSA16R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2252IRSA16R requirements.
6.How does Aetrix verify that MSP430G2252IRSA16R is sourced from the original manufacturer or authorized distributors?
All MSP430G2252IRSA16R 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 MSP430G2252IRSA16R meets industry standards.
7.What is the process for return or replacement of MSP430G2252IRSA16R?
All MSP430G2252IRSA16R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2252IRSA16R, 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 MSP430G2252IRSA16R part is unused and in its original packaging.
Return procedure for MSP430G2252IRSA16R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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