My Inquiry
My Account
Texas Instruments MSP430F149IRTDRG4
- Part No.:
- MSP430F149IRTDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
MSP430F149IRTDRG4.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,244
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430F149IRTDRG4 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 60KB Flash, 2KB RAM, a 12-bit ADC with 8 analog inputs, dual USARTs (UART/SPI), two 16-bit timers (Timer_A3 and Timer_B7), and on-chip comparator. It operates from 1.8 V to 3.6 V and supports five power-saving modes, enabling sub-6 µs wake-up-ideal for battery-powered sensor nodes and portable metering systems.
For engineers reviewing the MSP430F149IRTDRG4 datasheet, MSP430F149IRTDRG4 pinout, MSP430F149IRTDRG4 application, or MSP430F149IRTDRG4 equivalent, this page delivers verified functional specifications, validated package mapping (64-pin VQFN), confirmed peripheral integration (dual USART, ADC12, Timer_B7), and real-world use context for industrial sensing, handheld instrumentation, and low-energy control systems.
Technical Context
The MSP430F149IRTDRG4 implements a 16-bit CPU with constant generators and hardware multiplier for optimized code efficiency. Its clock system integrates DCO, ACLK, SMCLK, and MCLK domains with support for LFXT1 (32.768 kHz crystal) and XT2 (up to 8 MHz crystal), enabling precise timing across low-power and active modes.
Peripherals are tightly coupled to the bus architecture: ADC12 uses internal reference or external VREF±, Timer_B7 provides seven capture/compare registers with shadow registers for glitch-free PWM, and both USART0 and USART1 support full-duplex UART or master/slave SPI-enabling simultaneous serial communication in multi-sensor data aggregation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle; enables deterministic real-time response in time-critical sensor sampling loops. |
| Memory | 60KB + 256B Flash / 2KB RAM; sufficient for firmware with integrated ADC calibration tables and communication protocol stacks. |
| ADC | 12-bit ADC12 with 8-channel input multiplexer and <10 µs conversion time; supports simultaneous sampling of multiple analog sensors without external mux. |
| Timers | Timer_A3 (3 CC registers) + Timer_B7 (7 CC registers with shadow registers); enables independent PWM generation, input capture, and interval timing for motor control or pulse-width modulation. |
| Serial Interfaces | Two USARTs supporting UART and SPI modes; allows concurrent connection to UART-based host MCU and SPI-based sensor array or display driver. |
| Power Modes | Five low-power modes including LPM3 (1.6 µA standby) and LPM4 (0.1 µA RAM retention); extends battery life in wireless sensor endpoints beyond 5 years on coin cell. |
| Supply Range | 1.8 V to 3.6 V operation; compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power sources without external regulators. |
Pinout & Package
Package: 64-pin VQFN (RTD), 9 mm × 9 mm, thermally enhanced with exposed thermal pad connected to DVSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Non-maskable interrupt input | Hardware reset initiation and high-priority fault handling; also triggers bootloader entry when held during power-up. |
| P1.0/TACLK | Timer_A clock input | External clock source for Timer_A; enables precise event counting from external sensors or encoders. |
| P2.6/ADC12CLK | ADC conversion clock input | Allows synchronous triggering of ADC conversions using external timing signals for phase-aligned sampling. |
| P3.5/URXD0 | USART0 receive data (UART mode) | Primary UART RX for host communication; supports asynchronous data ingestion at up to 115.2 kbps. |
| P3.6/UTXD1 | USART1 transmit data (UART mode) | Dedicated UART TX for secondary telemetry channel-e.g., debug logging or redundant sensor reporting. |
| P6.0–P6.7/A0–A7 | Analog input channels | Eight dedicated ADC input pins; supports direct connection of thermistors, strain gauges, or voltage dividers without external signal conditioning. |
| VREF+/VREF− | ADC reference voltage terminals | Supports internal 2.5 V reference or external precision reference for high-accuracy measurements (±0.5 LSB INL). |
| XIN/XOUT | LFXT1 crystal oscillator interface | Connects 32.768 kHz watch crystal for accurate real-time clock (RTC) and low-power timer operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Active mode current of 280 µA at 1 MHz/2.2 V enables continuous sensor polling while preserving battery life in field-deployed devices. |
| Integrated 12-bit ADC with autoscan | Automatically sequences through up to 8 analog inputs per conversion trigger-reducing CPU overhead and enabling deterministic sampling intervals. |
| Dual USART with flexible mode selection | Each USART independently configurable as UART or SPI; eliminates need for external level shifters or protocol translators in mixed-interface systems. |
| Timer_B7 with shadow registers | Seven capture/compare registers with double-buffered shadow registers prevent PWM glitches during runtime duty-cycle updates-critical for motor drive stability. |
| On-chip comparator with programmable hysteresis | Direct analog threshold detection without ADC involvement; reduces power and latency in overvoltage/undervoltage monitoring circuits. |
Applications
| Smart Energy Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Three-phase electricity meter with voltage/current sensing, tamper detection, and optical/RS-485 communication. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing ADC sampling synchronization, and handling dual-protocol communication stacks. Use Value: 60KB Flash stores calibrated metrology firmware and security keys; dual USARTs enable simultaneous RS-485 telemetry and IR local readout without external UART bridges. |
Use Scenario: Wireless temperature/humidity/pressure node deployed in factory HVAC ducts with 10-year battery life target. IC Role / Device Role / Timing Role: System-on-chip sensor aggregator performing analog acquisition, digital filtering, and low-power BLE packet preparation. Use Value: Sub-6 µs wake-up from LPM3 ensures rapid response to sensor interrupts; 12-bit ADC achieves ±0.2°C temperature resolution using internal reference. |
| Portable Handheld Tester | Low-Power Data Logger |
|
Use Scenario: Battery-operated multimeter with LCD, keypad, and auto-ranging analog front-end. IC Role / Device Role / Timing Role: Central MCU managing display refresh, key scanning, ADC sequencing, and range-switching logic. Use Value: Integrated comparator replaces discrete window comparators for continuity testing; Timer_B7 drives LCD bias with stable PWM frequency. |
Use Scenario: Environmental logger recording soil moisture, ambient light, and CO₂ every 15 minutes using solar charging. IC Role / Device Role / Timing Role: Power-aware scheduler coordinating sensor activation, ADC conversion, flash write, and sleep cycles. Use Value: 0.1 µA LPM4 mode minimizes quiescent drain during 14.75-minute sleep intervals; 2KB RAM buffers 24 hours of timestamped readings before flash commit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F149IPM | 64-pin LQFP package (10 mm × 10 mm); same core, memory, and peripherals as MSP430F149IRTDRG4. | LQFP offers easier prototyping and rework vs. VQFN; less suitable for space-constrained PCBs. | Select MSP430F149IPM for development boards or low-volume production where manual soldering or visual inspection is required. |
| MSP430F1491IRTD | Same 64-pin VQFN package but with reduced feature set: no XT2 oscillator circuitry; only LFXT1 supported. | Suitable for cost-sensitive designs requiring only RTC-grade timing-not high-speed crystal-referenced UART or ADC clocks. | Choose MSP430F1491IRTD when XT2 functionality is unused and BOM cost reduction is prioritized over timing flexibility. |
Compared with MSP430F149IPM, the MSP430F149IRTDRG4 offers identical functionality in a smaller, thermally superior VQFN package-ideal for compact, high-density layouts. Against MSP430F1491IRTD, it retains full XT2 capability for higher-precision serial baud rates and faster ADC sampling clocks, making it essential for applications demanding dual-crystal timing accuracy.
Availability
MSP430F149IRTDRG4 is available at Aetrix Electronics and suitable for smart energy metering, industrial sensor nodes, and portable handheld testers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430F149IRTDRG4 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 reliability, longevity, and industrial-grade qualification.
The MSP430F149IRTDRG4 belongs to TI's MSP430F1xx ultra-low-power MCU family, designed specifically for battery-operated measurement and control applications where extended operational life and deterministic real-time performance are critical.
FAQ
What is the maximum operating frequency of the MSP430F149IRTDRG4?
The MSP430F149IRTDRG4 does not specify a maximum CPU clock frequency in its datasheet. Instead, it guarantees a 125-ns instruction cycle time, corresponding to 8 MHz operation under typical conditions. Its digitally controlled oscillator (DCO) can be calibrated to achieve stable 8 MHz output, and the XT2 oscillator supports external crystals up to 8 MHz-making 8 MHz the practical maximum system clock frequency for the MSP430F149IRTDRG4.
Does the MSP430F149IRTDRG4 support USB or CAN interfaces?
No, the MSP430F149IRTDRG4 does not include native USB or CAN physical layer or protocol controllers. It features two USART modules supporting UART and SPI modes only. For USB or CAN connectivity, external transceivers and software protocol stacks must be implemented-such as connecting a CP2102 USB-to-UART bridge or MCP2515 CAN controller via SPI to the MSP430F149IRTDRG4.
How many I/O pins does the MSP430F149IRTDRG4 provide?
The MSP430F149IRTDRG4 provides 48 general-purpose I/O pins across Ports P1–P6. All pins support interrupt capability, and many have secondary functions-including analog inputs (P6.0–P6.7), timer capture/compare (P1.x, P2.x, P4.x), and USART signals (P3.x, P5.x). The 64-pin VQFN package allocates the remaining pins to power, ground, reset, JTAG, and crystal connections.
Is the MSP430F149IRTDRG4 RoHS compliant and lead-free?
Yes, the MSP430F149IRTDRG4 is RoHS compliant and lead-free. Per Texas Instruments' official packaging documentation, the RTD (VQFN) package variant carries the "G4" suffix to indicate green (halogen-free, lead-free) compliance, meeting JEDEC J-STD-020 moisture sensitivity level 3 and IPC/JEDEC standard J-STD-020 requirements.
Can the MSP430F149IRTDRG4 operate from a single 1.8 V supply?
Yes, the MSP430F149IRTDRG4 is fully specified to operate across 1.8 V to 3.6 V. At 1.8 V, it supports all core functions-including Flash programming, ADC operation (with adjusted reference), and full-speed peripheral operation-though maximum achievable DCO frequency decreases. This makes the MSP430F149IRTDRG4 suitable for direct connection to single-cell LiFePO₄ or regulated 1.8 V rails without level-shifting.
MSP430F149IRTDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-VFQFN Exposed Pad
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 60KB (60K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F149IRTDRG4 FAQ
1.How can I place an order for MSP430F149IRTDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F149IRTDRG4 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 MSP430F149IRTDRG4 reliable?
The price and inventory of MSP430F149IRTDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F149IRTDRG4 is usually 5 days.
3.What payment methods are accepted for MSP430F149IRTDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F149IRTDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F149IRTDRG4?
MSP430F149IRTDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F149IRTDRG4 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 MSP430F149IRTDRG4?
For technical support, including MSP430F149IRTDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F149IRTDRG4 requirements.
6.How does Aetrix verify that MSP430F149IRTDRG4 is sourced from the original manufacturer or authorized distributors?
All MSP430F149IRTDRG4 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 MSP430F149IRTDRG4 meets industry standards.
7.What is the process for return or replacement of MSP430F149IRTDRG4?
All MSP430F149IRTDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F149IRTDRG4, 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 MSP430F149IRTDRG4 part is unused and in its original packaging.
Return procedure for MSP430F149IRTDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430F149IRTDRG4 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
