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Texas Instruments MSP430G2353IRHB32R
- Part No.:
- MSP430G2353IRHB32R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430G2353IRHB32R.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430G2353IRHB32R from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 24 KB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, two 16-bit Timer_A modules with three capture/compare registers each, and USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C) interfaces. It operates from 1.8 V to 3.6 V and supports capacitive-touch I/O on up to 24 pins - ideal for battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2353IRHB32R datasheet, MSP430G2353IRHB32R pinout, MSP430G2353IRHB32R application, or MSP430G2353IRHB32R equivalent, key selection criteria include its QFN-32 package, integrated ADC10 channel count, standby current of 0.5 µA, brownout detection, and Spy-Bi-Wire debug interface compatibility.
Technical Context
The MSP430G2353IRHB32R implements a 16-bit RISC CPU with 62.5-ns instruction cycle time and constant generators for optimized code efficiency. Its clock system integrates a digitally controlled oscillator (DCO), internal LF oscillator, and 32-kHz crystal support - enabling sub-1-µs wake-up from LPM4 standby mode.
Peripherals include a comparator with eight input channels, programmable pullup/pulldown resistors on all I/O, and dual USCI modules supporting simultaneous UART and I²C communication. The ADC10 features sample-and-hold, internal 1.5-V/2.5-V references, and hardware autoscan across eight analog inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 62.5-ns instruction cycle; enables deterministic real-time control in low-power sensor firmware. |
| Flash / RAM | 24 KB flash / 256 B RAM; sufficient for standalone firmware with ADC data processing and UART telemetry without external memory. |
| ADC10 Resolution & Speed | 10-bit, 200 ksps with autoscan; supports continuous monitoring of up to 8 analog sensors at ≤125 µs per channel. |
| Supply Voltage Range | 1.8 V to 3.6 V; compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power sources. |
| Standby Current | 0.5 µA in LPM3; extends battery life to multi-year operation in intermittently active sensor endpoints. |
| Wake-Up Time | <1 µs from LPM4; critical for responsive wake-on-event designs like motion-triggered data logging. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG); enables in-system programming and debugging using minimal PCB footprint and pin count. |
Pinout & Package
Package: 32-pin QFN (RHB), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (recommended connection to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0CLK/ACLK/A0/CA0 | Multi-function I/O | Primary ADC input A0, timer clock source, ACLK output, or comparator input - configurable per application need. |
| P1.3/ADC10CLK/CAOUT/VREF-/VEREF-/A3/CA3 | Analog & control terminal | ADC conversion clock output, negative reference input, and comparator output - enables self-calibrated analog front-end design. |
| P1.4/SMCLK/CA4/TCK/VREF+/VEREF+/A4/UCB0STE/UCA0CLK | Multi-function I/O | Supplies SMCLK to peripherals, serves as JTAG TCK, provides ADC positive reference, and controls USCI slave timing. |
| P2.6/XIN/TA0.1 | Oscillator & timer input | Accepts 32.768 kHz crystal input for real-time clock or drives Timer0_A compare output - dual-role pin reduces external component count. |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset, non-maskable interrupt, and bidirectional Spy-Bi-Wire data - single pin handles boot, fault recovery, and programming. |
| AVCC / AVSS | Analog supply rails | Dedicated 1.8–3.6 V analog power and ground (pins 29 and 27); isolates noise-sensitive ADC/comparator from digital switching noise. |
Key Features
| Feature | Design Value |
|---|---|
| Five low-power modes including LPM4 | Enables <0.1 µA off-mode retention for emergency wake-up capability without battery drain. |
| On-chip comparator with 8-channel input mux | Replaces external comparators in threshold-detection circuits (e.g., battery voltage monitor or overtemp alert). |
| Capacitive-touch I/O on up to 24 pins | Supports button/slider implementation without dedicated touch controller IC or external components. |
| Built-in BSL with UART interface | Allows field firmware updates via simple serial connection - no debugger required for production reprogramming. |
| Digital I/O with individually configurable pullup/pulldown | Eliminates external bias resistors for switches, buttons, or open-drain bus interfaces (e.g., I²C pullups). |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and ambient light data at 10-second intervals, transmitting via UART to a gateway. IC Role / Device Role / Timing Role: Central MCU executing ADC sampling, data preprocessing, low-power scheduling, and UART telemetry - managing full system timing via DCO and ACLK. Use Value: 0.5 µA standby current and sub-1-µs wake-up enable >2-year operation on CR2032; integrated ADC10 and USCI reduce BOM by 3 discrete ICs. | Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals, performing real-time SpO₂ calculation, and displaying results on segmented LCD. IC Role / Device Role / Timing Role: Signal acquisition controller running ADC10 in autoscan mode across multiple photodiode channels, synchronizing LED drive timing via Timer_A PWM outputs. Use Value: Internal 2.5-V ADC reference ensures stable conversion accuracy across battery discharge; comparator monitors battery voltage for low-power warning. |
| Industrial Control Panel | Energy Harvesting IoT Endpoint |
Use Scenario: DIN-rail mounted HMI panel with tactile buttons, LED indicators, and RS-485 backhaul using isolated UART level shifter. IC Role / Device Role / Timing Role: Human interface processor handling capacitive-touch button detection, LED PWM dimming, and USCI_A0 UART framing for Modbus RTU protocol. Use Value: 24 capacitive-touch enabled I/O pins eliminate mechanical switch wear; USCI_A0 LIN mode supports auto-baudrate detection for robust field commissioning. | Use Scenario: Solar-powered soil moisture sensor waking every 15 minutes to measure capacitance, process result, and transmit via low-power UART to LoRaWAN concentrator. IC Role / Device Role / Timing Role: Energy-aware system manager coordinating ADC acquisition, RF wake-up signaling, and precise sleep/wake timing using LPM3 and ACLK from 32-kHz crystal. Use Value: 0.1 µA off-mode (RAM retention) preserves state between harvest cycles; brownout detector prevents erratic behavior during solar charging transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2453IRHB32 | 512 B RAM vs. 256 B; identical flash, ADC, timers, and package. | Required for firmware with larger stack depth or buffer-intensive UART/ADC buffering. | Select when application demands >256 B RAM for real-time signal processing or protocol stack overhead. |
| MSP430G2553IRHB32 | 512 B RAM + 16 KB flash vs. 256 B RAM + 24 KB flash; same peripherals and package. | Preferred for complex firmware with bootloader, OTA update logic, or dual-application partitioning. | Choose when firmware size exceeds 24 KB or when future scalability requires additional flash headroom. |
Compared with MSP430G2453IRHB32 and MSP430G2553IRHB32, the MSP430G2353IRHB32 offers optimal balance of flash capacity and RAM for cost-sensitive, deeply embedded sensor nodes where firmware fits within 24 KB and stack usage remains under 256 B - avoiding over-provisioned resources without sacrificing ADC or communication capability.
Availability
MSP430G2353IRHB32R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial control panels requiring stable component supply, long-term lifecycle support, and consistent QFN-32 packaging.
Supply support for MSP430G2353IRHB32R 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 - designed specifically for battery-operated sensor systems, portable instrumentation, and energy-constrained IoT endpoints where nanowatt-level operation and integrated analog peripherals are essential.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2353IRHB32R?
The MSP430G2353IRHB32R supports a maximum ADC10 sampling rate of 200 ksps in single-conversion mode. When using autoscan across multiple channels, effective per-channel rate depends on conversion clock configuration and number of enabled inputs - typically 25 ksps per channel in 8-channel autoscan with default settings. This performance is specified in the SLAS735J datasheet Section 6.3.
Does the MSP430G2353IRHB32R support hardware UART autobaud detection?
Yes, the MSP430G2353IRHB32R's USCI_A0 module supports hardware UART autobaud detection for LIN-compliant communication. This feature allows automatic baud rate determination from incoming break fields, simplifying host-to-node synchronization in automotive and industrial networks without preconfigured timing assumptions.
What debug interface does the MSP430G2353IRHB32R use, and what pins are required?
The MSP430G2353IRHB32R uses the 2-wire Spy-Bi-Wire interface for debugging and programming. It requires only two pins: RST/NMI/SBWTDIO (pin 23) and TEST/SBWTCK (pin 24). This eliminates the need for a full 4-wire JTAG connector, reducing PCB layout complexity and test point count.
Can the MSP430G2353IRHB32R operate from a single 1.8-V supply, and what peripherals remain functional?
Yes, the MSP430G2353IRHB32R is fully specified to operate from 1.8 V to 3.6 V. At 1.8 V, all core peripherals remain functional: ADC10 (with reduced reference options), USCI_A0/B0, Timer_A modules, comparator, and capacitive-touch I/O. Flash programming requires ≥2.2 V, but normal execution and RAM retention are guaranteed down to 1.8 V.
How many capacitive-touch enabled I/O pins does the MSP430G2353IRHB32R support, and what is required to activate them?
The MSP430G2353IRHB32R supports capacitive-touch sensing on up to 24 I/O pins (all P1.x, P2.x, and P3.x pins). Activation requires enabling the pin oscillator via the PxIES register and configuring the corresponding PxSEL bit - no external components are needed, as the internal oscillator and comparator provide complete touch signal chain functionality.
MSP430G2353IRHB32R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN 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, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 24
- 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:
MSP430G2353IRHB32R FAQ
1.How can I place an order for MSP430G2353IRHB32R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2353IRHB32R 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 MSP430G2353IRHB32R reliable?
The price and inventory of MSP430G2353IRHB32R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2353IRHB32R is usually 5 days.
3.What payment methods are accepted for MSP430G2353IRHB32R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2353IRHB32R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2353IRHB32R?
MSP430G2353IRHB32R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2353IRHB32R 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 MSP430G2353IRHB32R?
For technical support, including MSP430G2353IRHB32R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2353IRHB32R requirements.
6.How does Aetrix verify that MSP430G2353IRHB32R is sourced from the original manufacturer or authorized distributors?
All MSP430G2353IRHB32R 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 MSP430G2353IRHB32R meets industry standards.
7.What is the process for return or replacement of MSP430G2353IRHB32R?
All MSP430G2353IRHB32R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2353IRHB32R, 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 MSP430G2353IRHB32R part is unused and in its original packaging.
Return procedure for MSP430G2353IRHB32R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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