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Texas Instruments MSP430G2352IRSA16T
- Part No.:
- MSP430G2352IRSA16T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430G2352IRSA16T.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:255
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Product details
Overview
MSP430G2352IRSA16T 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 MSP430G2352IRSA16T datasheet, MSP430G2352IRSA16T pinout, MSP430G2352IRSA16T application, or MSP430G2352IRSA16T equivalent, key selection criteria include its 10-bit ADC capability (exclusive to G2x52 series), QFN-16 package footprint, Spy-Bi-Wire debug interface, brownout detection, and five low-power modes enabling sub-1-µs wake-up - all critical for energy-constrained embedded designs.
Technical Context
The MSP430G2352IRSA16T implements a 16-bit RISC CPU with constant generators and 16 general-purpose registers, executing instructions in 62.5 ns at 16 MHz. Its clock system integrates a digitally controlled oscillator (DCO) calibrated to four internal frequencies (up to 16 MHz), plus LF oscillator and 32-kHz crystal support.
It features a dedicated ADC10 module with internal reference, sample-and-hold, autoscan, and DMA-capable data transfer; a Comparator_A+ with eight channels; and USI hardware supporting both SPI and I²C protocols without CPU intervention during transfers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 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 |
| ADC Resolution & Speed | 10-bit SAR ADC with 200-ksps sampling rate and internal reference - enables direct sensor digitization without external precision references |
| Power Consumption | 220 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA off-mode with RAM retention - extends coin-cell battery life to years |
| Low-Power Modes | Five software-selectable LPMs including LPM4 (0.1 µA), with sub-1-µs wake-up via interrupt - ideal for event-driven sensing |
| Communication Peripherals | USI supporting hardware SPI and I²C - reduces firmware overhead for sensor interfacing and host communication |
| Timer Resource | One 16-bit Timer_A with three capture/compare registers - supports PWM generation, input capture, and interval timing simultaneously |
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 |
|---|---|---|
| 1, 16 - DVCC | Supply voltage input | Primary digital power rail (1.8–3.6 V); requires local decoupling near pin 1 |
| 14 - DVSS | Digital ground | Reference for digital I/O and core logic; must be low-impedance connection to thermal pad |
| 15 - AVCC | Analog supply input | Separate 1.8–3.6 V rail for ADC and comparator; isolation from DVCC improves SNR |
| 13 - AVSS | Analog ground | Dedicated analog return path; star-grounding with AVCC minimizes ADC noise |
| 10 - RST/NMI/SBWTDIO | Reset / NMI input / debug I/O | Active-low reset; dual-function Spy-Bi-Wire data line for programming and debugging |
| 11 - TEST/SBWTCK | Test mode select / debug clock | Enables JTAG/Spy-Bi-Wire; required for firmware loading and real-time debugging |
| 12 - XOUT/P2.7 | Oscillator output / GPIO | Drives external crystal; configurable as general-purpose I/O when crystal not used |
| 9 - XIN/P2.6/TA0.1 | Oscillator input / GPIO / timer output | Accepts 32-kHz crystal or external clock; also serves as Timer_A compare output |
| 2–8, 17–19 - P1.x | Programmable I/O port | Eight pins with individually configurable direction, pullup/pulldown, interrupt edge, and capacitive-touch enable |
| 3–8 - P1.0–P1.5 | ADC10 analog inputs A0–A5 | Direct connection to 10-bit ADC; require AVSS/AVCC bypassing and signal conditioning per channel |
| 5 - P1.3 | ADC10CLK / CAOUT / VREF− | Provides ADC conversion clock output; delivers comparator output; supplies negative ADC reference |
| 6 - P1.4 | SMCLK / A4 / VREF+ | Supplies system sub-main clock; accepts analog input A4; provides positive ADC reference |
| 7 - P1.5 | SCLK / A5 / TMS | USI serial clock in SPI mode; analog input A5; JTAG test mode select |
| 8 - P1.6 | SDO / SCL / A6 / TDI | USI data output in SPI / I²C clock / analog input A6 / JTAG test data input |
| 9 - P1.7 | SDI / SDA / A7 / TDO | USI data input in SPI / I²C data / analog input A7 / JTAG test data output |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power ADC10 | 10-bit SAR converter with 200-ksps throughput, internal reference, and autoscan - eliminates need for external ADC and reference ICs in sensor front-ends |
| Hardware USI | Dedicated SPI/I²C controller with shift register and clock logic - enables concurrent sensor reads and host communication without CPU polling |
| Capacitive-touch I/O | Up to 16 pins support pin-oscillator-based touch sensing - allows direct integration of buttons/sliders without external touch controller |
| Brownout detector | On-chip voltage monitor with programmable threshold - prevents erratic operation during battery sag and ensures clean reset on power recovery |
| Calibrated DCO | Digital oscillator factory-calibrated to 1/2/4/8/12/16 MHz - removes requirement for external crystal in cost-sensitive applications |
| Security fuse | Programmable code protection via blown security fuse - blocks unauthorized readout of flash contents after production programming |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data wirelessly every 5 minutes. IC Role / Device Role / Timing Role: MSP430G2352IRSA16T acquires analog sensor outputs via ADC10, processes values, manages low-power sleep/wake cycles, and drives UART or RF transceiver via USI. Use Value: 0.1 µA off-mode current and sub-1-µs wake-up minimize average power, extending CR2032 battery life beyond 3 years. | Use Scenario: Wearable pulse oximeter measuring SpO₂ and heart rate using photodiode signals. IC Role / Device Role / Timing Role: MSP430G2352IRSA16T performs synchronized LED drive timing, analog front-end amplification control, and 10-bit ADC sampling of photodiode currents. Use Value: Integrated comparator and ADC10 with internal reference eliminate discrete analog components, reducing BOM count and board area by 35%. |
| Industrial Control Panel | Energy Harvesting IoT Endpoint |
Use Scenario: Local HMI on motor control cabinet with tactile buttons and LED indicators. IC Role / Device Role / Timing Role: MSP430G2352IRSA16T scans capacitive-touch buttons, drives LEDs via GPIO, communicates status to PLC over I²C, and monitors supply voltage. Use Value: 16 capacitive-touch enabled I/O pins allow full button matrix implementation in QFN-16 footprint, avoiding external touch controller IC. | Use Scenario: Solar-powered environmental monitor harvesting µW-level energy to log temperature/pressure hourly. IC Role / Device Role / Timing Role: MSP430G2352IRSA16T wakes on timer interrupt, powers sensors, samples ADC10, stores data in RAM, then returns to LPM4 until next cycle. Use Value: 0.5 µA standby current and fast wake-up ensure >99.9% duty-cycled operation, enabling reliable operation from 10-µW harvesters. |
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 |
|---|---|---|---|
| MSP430G2452IRSA16 | 8 KB flash, 8-channel ADC input, same peripherals and package | Supports larger firmware and more analog inputs - suitable when expanding sensor count or adding BLE stack | Select when >4 KB flash or >6 ADC channels are required; identical pinout and debug interface simplify migration |
| MSP430FR2355IRSBT | Ferroelectric RAM (6.25 KB FRAM), no flash wear-out, higher ADC speed (250 ksps), different QFN-24 package | Enables frequent data logging without flash endurance limits; requires PCB redesign due to 24-pin layout | Choose for high-write-cycle applications like dataloggers; avoid if QFN-16 footprint or flash-based toolchain compatibility is mandatory |
Compared with MSP430G2452IRSA16 and MSP430FR2355IRSBT, the MSP430G2352IRSA16 offers optimal balance of ADC capability, code space, and QFN-16 footprint for cost-sensitive, battery-operated sensor nodes where 4 KB flash and six ADC channels meet requirements without overengineering.
Availability
MSP430G2352IRSA16T 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 MSP430G2352IRSA16T 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 power efficiency, reliability, and design scalability.
The MSP430G2xx family was designed specifically for ultra-low-power embedded applications demanding extended battery life, integrated analog peripherals, and minimal system-level BOM - targeting sensor interfaces, portable instrumentation, and energy-harvesting endpoints.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2352IRSA16T?
The MSP430G2352IRSA16T supports a maximum ADC10 sampling rate of 200 ksps (kilo-samples per second) with internal reference and autoscan enabled. This rate is achievable under specified conditions: VCC ≥ 2.2 V, ADC10CLK sourced from SMCLK at ≤ 5 MHz, and proper analog supply decoupling. The MSP430G2352IRSA16T ADC10 module does not support oversampling or hardware averaging modes beyond its base 10-bit resolution.
Does the MSP430G2352IRSA16T include hardware support for I²C communication?
Yes, the MSP430G2352IRSA16T includes a Universal Serial Interface (USI) module that provides full hardware support for I²C communication, including clock stretching, START/STOP condition generation, and ACK/NACK handling. Pins P1.6 (SCL) and P1.7 (SDA) are dedicated to I²C functionality when USI is configured in I²C mode, and the MSP430G2352IRSA16T requires no CPU intervention for byte-level transfers.
What debug interface does the MSP430G2352IRSA16T use, and what pins are required?
The MSP430G2352IRSA16T uses the Spy-Bi-Wire (SBW) debug interface, which requires two pins: RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This 2-wire interface supports full-speed programming, real-time debugging, and breakpoint execution. The MSP430G2352IRSA16T does not support standard 4-wire JTAG; SBW is the only supported on-chip debug protocol for this device.
Can the MSP430G2352IRSA16T operate without an external crystal?
Yes, the MSP430G2352IRSA16T can operate without an external crystal using its factory-calibrated internal digitally controlled oscillator (DCO), which provides stable clock sources at 1/2/4/8/12/16 MHz. The DCO requires no external components and achieves ±3% accuracy over voltage and temperature - sufficient for UART communication, ADC timing, and most control loops. External crystals are optional for higher precision timing.
How many analog input channels does the MSP430G2352IRSA16T ADC10 support?
The MSP430G2352IRSA16T ADC10 module supports eight analog input channels (A0–A7), accessible via P1.0 through P1.7. However, only six of these (A0–A5) are routed to physical pins on the 16-pin QFN package; A6 and A7 are available on P1.6 and P1.7 but share functions with USI and JTAG. All eight channels are addressable in software, but A6/A7 require careful pin multiplexing management in the MSP430G2352IRSA16T design.
MSP430G2352IRSA16T 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:
MSP430G2352IRSA16T FAQ
1.How can I place an order for MSP430G2352IRSA16T through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2352IRSA16T 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 MSP430G2352IRSA16T reliable?
The price and inventory of MSP430G2352IRSA16T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2352IRSA16T is usually 5 days.
3.What payment methods are accepted for MSP430G2352IRSA16T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2352IRSA16T transactions.
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4.How is shipping managed for MSP430G2352IRSA16T?
MSP430G2352IRSA16T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2352IRSA16T 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 MSP430G2352IRSA16T?
For technical support, including MSP430G2352IRSA16T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2352IRSA16T requirements.
6.How does Aetrix verify that MSP430G2352IRSA16T is sourced from the original manufacturer or authorized distributors?
All MSP430G2352IRSA16T 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 MSP430G2352IRSA16T meets industry standards.
7.What is the process for return or replacement of MSP430G2352IRSA16T?
All MSP430G2352IRSA16T units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2352IRSA16T, 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 MSP430G2352IRSA16T part is unused and in its original packaging.
Return procedure for MSP430G2352IRSA16T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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