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Texas Instruments MSP430F155IRTDT
- Part No.:
- MSP430F155IRTDT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F155IRTDT.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,765
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Product details
Overview
MSP430F155IRTDT from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 16KB Flash, 512B RAM, dual 12-bit DACs, a 12-bit ADC with autoscan, three-channel DMA, two 16-bit timers (Timer_A3 and Timer_B3), USART0 with UART/SPI/I²C support, and integrated comparator - deployed in portable sensor systems and battery-powered industrial meters.
For engineers reviewing the MSP430F155IRTDT datasheet, MSP430F155IRTDT pinout, MSP430F155IRTDT application, or MSP430F155IRTDT equivalent, key selection criteria include its 64-pin QFN (RTD) package, -40°C to +85°C operating range, 1.8–3.6 V supply, <6 μs wake-up from standby, and absence of USART1 (unlike MSP430F16x/161x variants).
Technical Context
The MSP430F155IRTDT implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations. Its clock system includes DCO, ACLK, SMCLK, and MCLK derived from XT1 (32.768 kHz crystal) and optional XT2 (up to 8 MHz), with programmable voltage supervision and brownout detection.
It integrates peripheral modules directly mapped into memory space: ADC12 with internal reference and sample-and-hold, DAC12 with synchronized dual outputs, and JTAG-based Embedded Emulation Module (EEM) for debugging. Timer_B3 provides three capture/compare registers without shadow registers - distinguishing it from Timer_B7 in higher-series devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables high code efficiency and deterministic 125-ns instruction cycle time. |
| Memory | 16KB+256B Flash (main + info memory), 512B RAM; supports in-system programming via JTAG or BSL UART interface on P1.1/P2.2. |
| Power Consumption | Active mode: 330 μA at 1 MHz/2.2 V; Standby: 1.1 μA; Off mode with RAM retention: 0.2 μA - optimized for multi-year battery life in sensing nodes. |
| Analog Peripherals | 12-bit ADC with 8-channel input, internal reference, sample-and-hold, and autoscan; dual 12-bit voltage-output DACs with synchronization capability. |
| Digital Peripherals | Timer_A3 (3 capture/compare), Timer_B3 (3 capture/compare, no shadow registers), USART0 (UART/SPI/I²C), comparator, watchdog, and 3-channel DMA controller. |
| Operating Range | -40°C to +85°C ambient temperature; 1.8 V to 3.6 V supply voltage - suitable for industrial and extended-temperature embedded applications. |
| Package & Pin Count | 64-pin QFN (RTD); 48 GPIO pins with interrupt capability across six I/O ports; dedicated analog supply pins (AVCC/AVSS) isolate noise-sensitive ADC/DAC operation. |
Pinout & Package
Package: 64-pin QFN (RTD), 9 mm × 9 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt | Active-low reset input; also serves as NMI source and BSL entry trigger when pulled low during power-up. |
| P1.0/TACLK | Timer_A Clock Input | Configurable external clock source for Timer_A; enables precise timing control independent of system clocks. |
| P2.6/ADC12CLK/DMAE0 | ADC Conversion Clock / DMA Trigger | Provides dedicated clock signal for ADC12 conversions; also acts as external trigger for DMA channel 0. |
| P3.1/SIMO0/SDA | USART0 SPI MOSI / I²C Data | Shared function pin supporting SPI master-out-slave-in or I²C bidirectional data line - requires software-configured mode selection. |
| P6.6/A6/DAC0 | Analog Input / DAC Output | Simultaneous 12-bit DAC output (DAC0) and analog input (A6); enables closed-loop control with shared pin resource. |
| TCK/TMS/TDI/TDO | JTAG Test Interface | Four-pin boundary-scan interface for programming, emulation, and debug; supports TI's MSP-FET430UIF and MSP-GANG430 tools. |
Key Features
| Feature | Design Value |
|---|---|
| Five Low-Power Modes (LPM0–LPM4) | Enables dynamic power scaling: LPM4 draws only 0.2 μA with RAM retention, allowing rapid wake-up (<6 μs) for event-driven sensing. |
| Dual 12-Bit Synchronized DACs | Generates matched analog outputs for differential signaling or simultaneous actuator control without external synchronization circuitry. |
| Integrated Comparator_A | Provides fast threshold detection (e.g., battery voltage monitoring) with direct connection to Timer_A inputs for hardware-triggered responses. |
| Hardware-Based DMA Controller | Three-channel DMA offloads CPU during ADC sampling, UART transfers, or memory-to-memory moves - reducing active-mode duration and total energy per task. |
| Bootloader (BSL) via UART | Enables field firmware updates using only P1.1 (TX) and P2.2 (RX); password-protected access prevents unauthorized reprogramming. |
Applications
| Portable Gas Sensor Node | Industrial Panel Meter |
|---|---|
Use Scenario: Battery-powered handheld device measuring CO₂ and humidity with real-time display and Bluetooth LE reporting. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, DAC-driven reference calibration, LCD segment driving, and low-power UART communication to BLE module. Use Value: Sub-1μA standby current extends 2xAA battery life beyond 3 years; <6 μs wake-up ensures responsive button press detection without polling overhead. |
Use Scenario: DIN-rail mounted meter acquiring 4–20 mA process signals, computing linearized values, and driving 4-digit LED display. IC Role / Device Role / Timing Role: Signal conditioner and display controller with precision 12-bit ADC input scaling, dual DAC output for analog loop test, and timer-driven multiplexed LED refresh. Use Value: Integrated AVCC/AVSS isolation minimizes noise coupling into 12-bit measurements; hardware DMA automates ADC→RAM→display buffer transfers. |
| Smart Water Quality Monitor | Low-Cost Energy Logger |
Use Scenario: Submersible probe logging pH, ORP, and conductivity in municipal water tanks with periodic GSM upload. IC Role / Device Role / Timing Role: Sensor fusion hub performing analog front-end conditioning, temperature compensation, and burst-mode GSM transmission scheduling. Use Value: Dual DACs generate precise reference voltages for electrode biasing; internal 1.5V reference eliminates need for external precision references. |
Use Scenario: Retrofit electricity meter capturing voltage/current waveforms via CT/shunt, computing kWh, and storing data in Flash for weekly retrieval. IC Role / Device Role / Timing Role: Waveform acquisition engine using ADC autoscan across multiple channels, timestamping via Timer_A, and Flash wear-leveling for long-term storage. Use Value: 16KB Flash accommodates both firmware and 30-day waveform history; 512B RAM buffers ADC samples before Flash write to minimize write cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F167IRTDT | 32KB Flash, 1KB RAM, Timer_B7 (7 CCRs), USART1, no I²C on USART0 - adds second serial interface and extended timer resources. | Supports dual-serial protocols (e.g., Modbus RTU + I²C sensor bus); required for applications needing >16KB code or dual UART/SPI links. | Select when additional Flash, RAM, or USART1 functionality is needed; not drop-in due to different peripheral register maps and interrupt vectors. |
| MSP430F156IRTDT | 24KB Flash, 1KB RAM, identical peripherals and pinout - differs only in memory size and boot ROM layout. | Direct pin-compatible upgrade path for firmware expansion; same power profile and peripheral behavior. | Choose for incremental code growth without hardware redesign; retains all MSP430F155IRTDT timing, I/O, and analog characteristics. |
Compared with MSP430F155IRTDT, MSP430F167IRTDT adds USART1 and Timer_B7 but increases power in active mode and requires updated driver libraries, while MSP430F156IRTDT offers seamless memory scalability within the same F15x family and identical low-power behavior.
Availability
MSP430F155IRTDT is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and battery-powered metering applications requiring stable component supply, long-lifecycle support, and verified TI-qualified manufacturing traceability.
Supply support for MSP430F155IRTDT 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 expertise in low-power microcontroller design and industrial-grade reliability.
The MSP430F155IRTDT belongs to the MSP430F15x series - a family engineered for ultralow-power mixed-signal control in battery-operated measurement systems, emphasizing sub-1μA sleep currents and fast wake-up responsiveness.
FAQ
What is the maximum operating frequency of the MSP430F155IRTDT?
The MSP430F155IRTDT operates up to 8 MHz using the internal digitally controlled oscillator (DCO) or external crystals (XT1/XT2). Its 16-bit RISC architecture delivers a 125-ns instruction cycle time at 8 MHz, enabling real-time response in sensor acquisition and control loops. The DCO supports factory-trimmed calibration for ±3% accuracy across voltage and temperature.
Does the MSP430F155IRTDT support I²C communication?
Yes, the MSP430F155IRTDT supports I²C communication through USART0 configured in I²C mode, using P3.1 (SDA) and P3.3 (SCL) pins. This implementation complies with standard-mode (100 kbps) I²C protocol and supports multi-master arbitration. Note that I²C functionality is exclusive to USART0 - the device lacks USART1, which is present in MSP430F16x/161x variants.
How many analog input channels does the MSP430F155IRTDT ADC support?
The MSP430F155IRTDT features a 12-bit ADC12 module with eight selectable analog input channels (A0–A7), accessible via P6.0 through P6.7. It supports internal reference (1.5 V or 2.5 V), sample-and-hold, and autoscan mode - allowing sequential conversion of all enabled channels without CPU intervention, ideal for multi-sensor data acquisition.
Is the MSP430F155IRTDT pin-compatible with other MSP430F15x devices?
Yes, the MSP430F155IRTDT shares identical 64-pin QFN (RTD) packaging and pinout with MSP430F156IRTDT and MSP430F157IRTDT. All F15x variants use the same peripheral mapping, register layout, and interrupt vector table - enabling hardware compatibility and firmware reuse across memory variants without PCB changes.
What debug and programming interfaces are supported by the MSP430F155IRTDT?
The MSP430F155IRTDT supports JTAG-based debugging and programming via TCK/TMS/TDI/TDO pins using tools like MSP-FET430UIF, and in-system flash programming via its UART-based Bootstrap Loader (BSL) on P1.1 and P2.2. Both methods support full memory access, breakpoint setting, and real-time variable inspection through TI's Code Composer Studio and IAR Embedded Workbench IDEs.
MSP430F155IRTDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 16KB (16K 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 8x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F155IRTDT FAQ
1.How can I place an order for MSP430F155IRTDT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F155IRTDT 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 MSP430F155IRTDT reliable?
The price and inventory of MSP430F155IRTDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F155IRTDT is usually 5 days.
3.What payment methods are accepted for MSP430F155IRTDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F155IRTDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F155IRTDT?
MSP430F155IRTDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F155IRTDT 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 MSP430F155IRTDT?
For technical support, including MSP430F155IRTDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F155IRTDT requirements.
6.How does Aetrix verify that MSP430F155IRTDT is sourced from the original manufacturer or authorized distributors?
All MSP430F155IRTDT 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 MSP430F155IRTDT meets industry standards.
7.What is the process for return or replacement of MSP430F155IRTDT?
All MSP430F155IRTDT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F155IRTDT, 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 MSP430F155IRTDT part is unused and in its original packaging.
Return procedure for MSP430F155IRTDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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