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Texas Instruments MSP430F2122TRTVT
- Part No.:
- MSP430F2122TRTVT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MSP430F2122TRTVT.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 32WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
MSP430F2122TRTVT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 4KB+256B flash, 512B RAM, a 10-bit 200-ksps ADC with internal reference and DTC, two 16-bit timers (Timer0_A3 with three capture/compare registers, Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I2C), and comparator_A+. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430F2122TRTVT datasheet, MSP430F2122TRTVT pinout, MSP430F2122TRTVT application, or MSP430F2122TRTVT equivalent, this page delivers verified technical context, exact pin functions for the 32-pin QFN (RTV) package, low-power mode timing, ADC calibration structure, and validated alternative microcontrollers for migration or second-sourcing.
Technical Context
The MSP430F2122TRTVT implements a digitally controlled oscillator (DCO) with four factory-calibrated frequencies up to 16 MHz (±1%), enabling sub-1 µs wake-up from LPM4 standby mode. Its clock system provides ACLK, SMCLK, and MCLK sourced from internal LF oscillator, 32-kHz crystal, HF crystal/resonator, or external digital clock.
Peripherals are memory-mapped and fully accessible via all CPU instructions. The ADC10 includes autoscan, sample-and-hold, and a data transfer controller (DTC) that autonomously stores conversion results to RAM without CPU intervention. The comparator_A+ supports slope ADC operation and battery voltage supervision.
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 at 16 MHz |
| Flash / RAM | 4KB + 256B flash program memory; 512B RAM for variables and stack in active and low-power modes |
| ADC Performance | 10-bit SAR ADC with 200-ksps sampling rate, internal 1.5V/2.5V reference, and DTC for zero-CPU-result buffering |
| Low-Power Modes | LPM4 draws 0.1 µA (RAM retention); wake-up latency <1 µs via DCO; active mode consumes 250 µA @ 1 MHz, 2.2 V |
| Communication | USCI_A0 supports UART with auto-baudrate detection (LIN), IrDA, and synchronous SPI; USCI_B0 supports SPI and I2C |
| Timers | Timer0_A3: 16-bit, 3 capture/compare registers, PWM generation, interval timing; Timer1_A2: 16-bit, 2 capture/compare registers |
Pinout & Package
Package: 32-pin QFN (RTV), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad (connected to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI/SBWTDIO (Pin 5) | Reset / Nonmaskable Interrupt / Spy-Bi-Wire Data I/O | Active-low reset input; NMI source; bidirectional debug interface for programming and emulation |
| TEST/SBWTCK (Pin 29) | Spy-Bi-Wire Test Clock | Input for JTAG/Spy-Bi-Wire test clock during programming and boundary scan |
| DVCC (Pin 30) | Digital Supply Voltage | Primary 1.8–3.6 V power supply for core logic and digital I/O banks |
| DVSS (Pin 1) | Digital Ground | Reference ground for digital circuitry; must be connected to thermal pad for thermal performance |
| P1.0/TACLK/ADC10CLK/CAOUT (Pin 21) | Timer/ADC/Comparator Output | Configurable timer clock input, ADC conversion clock source, or comparator output signal |
| XIN/P2.6/CA6 (Pin 3) | Crystal Oscillator Input | Input terminal for 32.768 kHz watch crystal or high-frequency crystal up to 16 MHz |
| XOUT/P2.7/CA7 (Pin 2) | Crystal Oscillator Output | Output terminal for crystal oscillator circuit; requires external load capacitance per crystal spec |
| P3.4/UCA0TXD/UCA0SIMO (Pin 13) | USCI_A0 Transmit / SPI Master Out | UART transmit data output or SPI slave-in/master-out data line; supports LIN framing and IrDA modulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 (RAM retention); 0.7 µA in LPM3; 250 µA active @ 1 MHz, 2.2 V enables multi-year coin-cell life |
| Integrated analog subsystem | 10-bit ADC with internal reference, DTC, and autoscan eliminates external ADC and DMA controller in sensor readout |
| Flexible clocking | Four factory-trimmed DCO frequencies (1/8/12/16 MHz ±1%) allow precise timing without external crystal in cost-sensitive designs |
| Robust debug & programming | Spy-Bi-Wire interface uses only RST/NMI and TEST pins; no external JTAG header needed for production programming |
| On-chip comparator | Comparator_A+ supports battery voltage monitoring, windowed threshold detection, and slope ADC for low-component-count analog sensing |
Applications
| Portable Gas Sensor Node | Smart Thermostat Controller |
|---|---|
|
Use Scenario: Battery-powered CO₂ or VOC sensor with temperature/humidity compensation, transmitting data wirelessly every 30 seconds. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling of analog sensor outputs, DTC-buffered result storage, LIN-compliant UART communication to transceiver, and LPM3 sleep between measurements. Use Value: 0.7 µA LPM3 current extends CR2032 battery life beyond 5 years; integrated ADC reference and DTC reduce BOM by two components. |
Use Scenario: Residential HVAC control unit requiring local display, button inputs, relay drivers, and RS-485 communication to central hub. IC Role / Device Role / Timing Role: Main controller executing PID loop at 100 ms intervals using Timer1_A2 interrupts, reading thermistor via ADC10, driving 7-segment display via GPIO, and handling Modbus RTU over USCI_A0. Use Value: 16-bit timers with capture/compare enable precise PWM fan control; USCI_A0 UART supports automatic baudrate detection for field-configurable RS-485 speed. |
| Industrial Current Loop Transmitter | Wireless Remote Meter Reader |
|
Use Scenario: 4–20 mA transmitter converting pressure sensor output, powered from loop, with HART modem interface. IC Role / Device Role / Timing Role: Signal conditioner and protocol engine: ADC10 digitizes sensor bridge, comparator_A+ monitors loop voltage, USCI_B0 handles I2C EEPROM for calibration data, USCI_A0 manages HART FSK modulation/demodulation. Use Value: Comparator_A+ provides rail-to-rail input range and programmable hysteresis for reliable loop fault detection; internal 2.5V reference ensures stable ADC scaling across temperature. |
Use Scenario: Battery-operated water/gas meter with ultrasonic flow sensing, storing hourly consumption logs, and waking daily to transmit via LoRaWAN gateway. IC Role / Device Role / Timing Role: Data acquisition and sleep manager: Timer0_A3 triggers periodic ADC bursts; DTC stores 128 samples; LPM4 preserves RAM state while RTC (ACLK-driven) wakes system at scheduled intervals. Use Value: Sub-1 µs DCO wake-up ensures accurate timing alignment for ultrasonic echo measurement; 512B RAM holds full day's log before transmission. |
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 |
|---|---|---|---|
| MSP430F2132TRTVT | 8KB+256B flash, same 512B RAM, identical peripherals and pinout; higher code capacity for complex firmware | Required when application firmware exceeds 4KB or needs future feature expansion without PCB change | Select when long-term code growth is anticipated; drop-in replacement with no layout or software modification |
| MSP430G2553IPW28 | 20-pin TSSOP; 16KB flash, 512B RAM; lacks comparator_A+, has enhanced USCI (UART/I2C/SPI), but no LIN auto-baud | Better suited for cost-optimized, lower-pin-count designs where comparator and LIN are not required | Choose for new designs prioritizing lower package cost and higher flash density; requires PCB redesign due to different pin count and layout |
Compared with MSP430F2122TRTVT, the MSP430F2132TRTVT offers direct scalability within the same footprint, while the MSP430G2553IPW28 trades analog integration for digital I/O density and flash headroom-making it suitable for non-analog-intensive, high-volume consumer applications.
Availability
MSP430F2122TRTVT is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and industrial current-loop transmitters requiring stable component supply and long-lifecycle support.
Supply support for MSP430F2122TRTVT 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 MSP430F21x2 series was designed specifically for ultra-low-power sensing and measurement applications where extended battery life, integrated analog front-end, and robust debug capability are critical design requirements.
FAQ
What is the maximum operating frequency of the MSP430F2122TRTVT?
The MSP430F2122TRTVT supports a maximum system clock (MCLK) of 16 MHz, achieved using the internal digitally controlled oscillator (DCO) with factory calibration to ±1% accuracy at 3 V and 30°C. External crystals up to 16 MHz are also supported via the HF oscillator path, and the DCO can be dynamically reconfigured during runtime for adaptive power/performance tuning.
Does the MSP430F2122TRTVT support LIN bus communication?
Yes, the MSP430F2122TRTVT supports LIN 2.1-compliant communication through its USCI_A0 module, which includes hardware-assisted auto-baudrate detection. This allows the MSP430F2122TRTVT to automatically synchronize to incoming LIN header frames without prior knowledge of bus speed, simplifying implementation in automotive body electronics and industrial control networks.
How much SRAM is available on the MSP430F2122TRTVT, and is it retained in low-power modes?
The MSP430F2122TRTVT includes 512 bytes of on-chip RAM, fully retained in all low-power modes including LPM4 (0.1 µA). This enables uninterrupted data logging, state preservation, and fast wake-up execution without reloading context-critical for real-time sensor fusion and event-triggered response in energy-constrained systems.
What debug interface does the MSP430F2122TRTVT use, and what pins are required?
The MSP430F2122TRTVT uses the Spy-Bi-Wire (SBW) interface, requiring only two pins: RST/NMI/SBWTDIO (Pin 5) and TEST/SBWTCK (Pin 29). This 2-wire interface replaces full 4-pin JTAG, reducing PCB footprint and connector cost while supporting full flash programming, real-time debugging, and breakpoint execution via tools like MSP-FET430UIF.
Can the MSP430F2122TRTVT perform analog-to-digital conversions without CPU involvement?
Yes, the MSP430F2122TRTVT's ADC10 module includes a Data Transfer Controller (DTC) that autonomously moves conversion results from ADC10MEM into user-defined RAM locations without CPU intervention. When configured with autoscan and DTC, the MSP430F2122TRTVT can acquire and store up to 128 sequential samples across multiple channels during LPM3 sleep, resuming only upon completion or interrupt.
MSP430F2122TRTVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-WFQFN Exposed Pad
- Series:
- MSP430F2xx
- 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, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 4KB (4K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2122TRTVT FAQ
1.How can I place an order for MSP430F2122TRTVT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2122TRTVT 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 MSP430F2122TRTVT reliable?
The price and inventory of MSP430F2122TRTVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2122TRTVT is usually 5 days.
3.What payment methods are accepted for MSP430F2122TRTVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2122TRTVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2122TRTVT?
MSP430F2122TRTVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2122TRTVT 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 MSP430F2122TRTVT?
For technical support, including MSP430F2122TRTVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2122TRTVT requirements.
6.How does Aetrix verify that MSP430F2122TRTVT is sourced from the original manufacturer or authorized distributors?
All MSP430F2122TRTVT 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 MSP430F2122TRTVT meets industry standards.
7.What is the process for return or replacement of MSP430F2122TRTVT?
All MSP430F2122TRTVT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2122TRTVT, 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 MSP430F2122TRTVT part is unused and in its original packaging.
Return procedure for MSP430F2122TRTVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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