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Texas Instruments MSP430G2352IRSA16R
- Part No.:
- MSP430G2352IRSA16R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2352IRSA16R.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
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Product details
Overview
MSP430G2352IRSA16R 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, and one 16-bit Timer_A with three capture/compare registers. It operates from 1.8 V to 3.6 V, consumes 220 µA in active mode at 1 MHz/2.2 V, and supports capacitive-touch I/O on up to 16 pins. It targets battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2352IRSA16R datasheet, MSP430G2352IRSA16R pinout, MSP430G2352IRSA16R application, or MSP430G2352IRSA16R equivalent, key selection criteria include its QFN-16 package, integrated ADC10 with internal reference and autoscan, USI-based serial communication, low-power operating modes (down to 0.1 µA in LPM4), and Spy-Bi-Wire debug interface.
Technical Context
The MSP430G2352IRSA16R implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling efficient code execution. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to 1 MHz, 8 MHz, 12 MHz, and 16 MHz, plus LF and VLO oscillators - all configurable via BCSCTL registers.
It features a dedicated ADC10 module with sample-and-hold, internal 1.5 V/2.5 V reference, 8-channel analog input multiplexing, and data transfer controller (DTC) for autonomous conversion storage. The USI module provides hardware-level SPI and I²C protocol support 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 62.5-ns instruction cycle time at 16 MHz |
| Flash / RAM | 4 KB flash memory and 256 B RAM - sufficient for compact firmware with ADC data buffering and USI protocol stacks |
| ADC Resolution & Speed | 10-bit SAR ADC with 200 kSPS max sampling rate and autoscan across 8 channels - enables real-time analog monitoring of multiple sensors |
| Power Consumption | 220 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA LPM4 with RAM retention - extends coin-cell battery life to multi-year operation |
| Communication Peripherals | USI module supporting master/slave SPI and I²C - eliminates need for external level shifters or protocol translators in sensor hub designs |
| Timer Resources | One 16-bit Timer_A with three capture/compare registers - supports PWM generation, input capture timing, and interval-based wake-up events |
| Operating Voltage | 1.8 V to 3.6 V supply range - compatible with single-cell Li-ion, Li-Po, and dual-AA alkaline battery systems |
Pinout & Package
Package: 16-pin QFN (RSA), 3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad recommended to be 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 | Supports timer clock input, ACLK output, ADC channel 0, comparator input - enables flexible signal routing in space-constrained layouts |
| P1.3/ADC10CLK/CAOUT/VREF-/VEREF-/A3/CA3 (Pin 5) | ADC & comparator interface | Provides ADC conversion clock output, negative reference, and analog input A3 - critical for precision ratiometric measurements |
| P1.6/TA0.1/SDO/SCL/A6/CA6/TDI/TCLK (Pin 8) | Shared peripheral pin | Functions as SPI data out, I²C clock, ADC A6 input, or JTAG test input - requires careful mode configuration during initialization |
| RST/NMI/SBWTDIO (Pin 10) | Reset & debug I/O | Active-low reset, non-maskable interrupt, and bidirectional Spy-Bi-Wire data - enables in-system programming and debugging with two-wire interface |
| XIN/P2.6/TA0.1 (Pin 13) | Crystal oscillator input | Accepts 32.768 kHz crystal for precise real-time clock operation or functions as GPIO/timer output when crystal not used |
| DVSS (Pin 14) | Digital ground | Reference return path for digital circuitry; must be tied to AVSS and QFN thermal pad for optimal noise immunity |
| AVCC (Pin 15) | Analog supply voltage | Separate 1.8–3.6 V rail for ADC and comparator - improves analog accuracy by isolating noisy digital switching |
| AVSS (Pin 13) | Analog ground | Dedicated analog return path; requires star grounding near AVCC decoupling capacitor to minimize ADC quantization error |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Five software-selectable low-power modes including LPM4 (0.1 µA) with full RAM retention - ideal for intermittent sensing applications |
| Integrated 10-bit ADC | 200 kSPS sampling with internal reference, sample-and-hold, and autoscan across 8 channels - reduces BOM count and PCB area vs. external ADC solutions |
| Universal Serial Interface (USI) | Hardware SPI/I²C support with independent control registers - offloads bit-banging overhead and ensures deterministic timing for sensor communication |
| Capacitive-touch I/O capability | Up to 16 pins support pin-oscillator-based touch detection - enables cost-effective human-interface design without dedicated touch controller IC |
| Spy-Bi-Wire debug interface | Two-wire JTAG-compatible programming and emulation - simplifies production programming and field firmware updates using minimal PCB footprint |
Applications
| Environmental Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity/pressure sensor collecting data every 30 seconds and transmitting via BLE module. IC Role / Device Role / Timing Role: MSP430G2352IRSA16R acts as system controller and analog front-end - manages ADC sampling, USI communication with sensor ICs, and low-power scheduling. Use Value: 0.1 µA LPM4 current draw extends CR2032 battery life beyond 2 years; integrated ADC eliminates external signal conditioning components. | Use Scenario: Wearable pulse oximeter acquiring photodiode signals and computing SpO₂ in real time. IC Role / Device Role / Timing Role: MSP430G2352IRSA16R performs synchronized dual-channel ADC sampling, digital filtering, and SPI transmission to display MCU. Use Value: 200 kSPS ADC with autoscan captures fast transient waveforms; USI SPI handles high-throughput sensor data without CPU polling. |
| Smart Home Occupancy Detector | Industrial Asset Tag |
Use Scenario: PIR-based motion detector with ambient light sensing and wireless reporting via sub-GHz RF transceiver. IC Role / Device Role / Timing Role: MSP430G2352IRSA16R reads PIR output and photoresistor via ADC, controls LED indicators, and drives RF module via USI SPI. Use Value: Integrated comparator enables zero-crossing detection on PIR output; capacitive-touch I/O allows proximity-based UI without mechanical buttons. | Use Scenario: Battery-powered vibration/temperature tag attached to rotating machinery, logging data and transmitting on schedule. IC Role / Device Role / Timing Role: MSP430G2352IRSA16R samples accelerometer and thermistor via ADC10, stores timestamped data in RAM, and initiates RF burst via USI. Use Value: Brownout detector prevents corrupted writes during voltage sag; 16 MHz DCO ensures accurate timing for sensor sampling intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2452IRSA16 | 8 KB flash, same 4 KB RAM, identical peripherals and pinout - higher code capacity for complex sensor fusion algorithms | Preferred where firmware size exceeds 4 KB or future feature expansion is anticipated | Select when additional flash headroom is required without changing PCB layout or firmware architecture |
| MSP430FR2355IRSA16 | Ferroelectric RAM (64 KB FRAM), no flash wear-out, 12-bit ADC, enhanced USCI (not USI), same QFN-16 package | Better suited for frequent data logging or over-the-air updates due to FRAM endurance and faster write speed | Choose for high-write-cycle applications or where 12-bit resolution and FRAM reliability outweigh legacy toolchain compatibility |
Compared with MSP430G2452IRSA16, the MSP430G2352IRSA16 offers identical low-power performance and peripheral set at lower flash cost; versus MSP430FR2355IRSA16, it trades FRAM endurance and higher ADC resolution for proven flash reliability and broader ecosystem support in legacy designs.
Availability
MSP430G2352IRSA16R is available at Aetrix Electronics and suitable for environmental monitoring, portable medical devices, smart home sensors, and industrial asset tracking requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2352IRSA16R 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 with emphasis on energy efficiency and system integration.
The MSP430G2xx family is designed for ultra-low-power embedded applications where extended battery life, integrated analog peripherals, and compact footprint are critical - especially in portable instrumentation and wireless sensor networks.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2352IRSA16R?
The MSP430G2352IRSA16R supports a maximum ADC10 sampling rate of 200 kSPS. This is achievable when using the internal oscillator as the ADC10CLK source and configuring the ADC10CTL1 register for highest-speed conversion mode. The actual sustained rate depends on reference voltage stability, input signal settling time, and software overhead for result handling - but the hardware limit remains 200 kSPS per the SLAS722G datasheet.
Does the MSP430G2352IRSA16R support hardware I²C communication?
Yes, the MSP430G2352IRSA16R 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 condition detection, address matching, and ACK/NACK generation - eliminating bit-banging requirements and ensuring protocol compliance without CPU intervention.
What debug interface does the MSP430G2352IRSA16R use, and how many pins are required?
The MSP430G2352IRSA16R uses the Spy-Bi-Wire (SBW) debug interface, which requires only two pins: RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This two-wire interface is fully compatible with TI's MSP-FET and LaunchPad development tools, enabling full-speed debugging, flash programming, and real-time register inspection without占用 additional GPIO resources.
Can the MSP430G2352IRSA16R operate from a single 1.8 V supply, and what are the implications for ADC accuracy?
Yes, the MSP430G2352IRSA16R operates across 1.8 V to 3.6 V. At 1.8 V, the internal 1.5 V reference remains functional, but ADC full-scale range becomes 1.5 V - reducing dynamic range compared to 3.3 V operation. Accuracy is maintained per datasheet specifications (±1 LSB INL/DNL), though SNR degrades slightly due to lower signal swing; external reference bypass is recommended for precision applications below 2.5 V.
How many I/O pins with capacitive-touch capability does the MSP430G2352IRSA16R provide in the QFN-16 package?
In the QFN-16 package, the MSP430G2352IRSA16R provides up to 12 I/O pins with capacitive-touch capability: all 8 pins of Port 1 (P1.0–P1.7) and 4 pins of Port 2 (P2.0–P2.3). Pins P2.4–P2.5 are not available in the 16-pin variant per Table 1 and device pinout diagrams - confirming exactly 12 touch-capable I/Os usable for proximity or button sensing.
MSP430G2352IRSA16R 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:
MSP430G2352IRSA16R FAQ
1.How can I place an order for MSP430G2352IRSA16R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2352IRSA16R 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 MSP430G2352IRSA16R reliable?
The price and inventory of MSP430G2352IRSA16R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2352IRSA16R is usually 5 days.
3.What payment methods are accepted for MSP430G2352IRSA16R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2352IRSA16R transactions.
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4.How is shipping managed for MSP430G2352IRSA16R?
MSP430G2352IRSA16R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2352IRSA16R 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 MSP430G2352IRSA16R?
For technical support, including MSP430G2352IRSA16R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2352IRSA16R requirements.
6.How does Aetrix verify that MSP430G2352IRSA16R is sourced from the original manufacturer or authorized distributors?
All MSP430G2352IRSA16R 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 MSP430G2352IRSA16R meets industry standards.
7.What is the process for return or replacement of MSP430G2352IRSA16R?
All MSP430G2352IRSA16R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2352IRSA16R, 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 MSP430G2352IRSA16R part is unused and in its original packaging.
Return procedure for MSP430G2352IRSA16R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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