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Texas Instruments MSP430F149IPMRG4
- Part No.:
- MSP430F149IPMRG4
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430F149IPMRG4.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,105
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Product details
Overview
MSP430F149IPMRG4 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 60KB flash, 2KB RAM, 12-bit ADC (8-channel), dual USARTs, Timer_A3/Timer_B7, and 48 GPIOs in a 64-pin LQFP package. It operates from 1.8 V to 3.6 V and supports five power-saving modes - ideal for battery-powered sensor nodes and portable instrumentation requiring sub-µA standby current and <6 µs wake-up.
For engineers reviewing the MSP430F149IPMRG4 datasheet, MSP430F149IPMRG4 pinout, MSP430F149IPMRG4 application, or MSP430F149IPMRG4 equivalent, this page delivers verified functional specifications, validated pin roles, confirmed low-power timing behavior, and real-world use-case mappings - all grounded in TI's SLAS272H production data sheet (Rev. May 2018).
Technical Context
The MSP430F149IPMRG4 implements a 16-bit CPU with constant generators and hardware multiplier, enabling high code efficiency in memory-constrained embedded systems. Its clock system integrates DCO, LFXT1 (32.768 kHz crystal), and XT2 (up to 8 MHz) oscillators, supporting dynamic clock gating across five low-power modes including LPM3 with RAM retention at 0.1 µA.
Peripherals include a 12-bit ADC with internal reference and autoscan, two independent 16-bit timers with capture/compare shadow registers (Timer_A3 and Timer_B7), and dual USARTs configurable as UART or SPI - all accessible via 48 multiplexed I/O pins with interrupt capability on Ports P1–P6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle and hardware multiplier for efficient math-intensive firmware |
| Memory | 60KB + 256B flash (in-system programmable), 2KB RAM - sufficient for complex sensor fusion or protocol stacks |
| ADC | 12-bit SAR ADC with 8 input channels, <10 µs conversion time, internal reference, and autoscan - enables multi-sensor sampling without CPU intervention |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B7 (7 capture/compare registers with shadow registers) - supports PWM generation, input capture, and real-time event sequencing |
| Communication | Dual USARTs (USART0/USART1), each configurable as UART or SPI - allows simultaneous host interface and peripheral daisy-chaining |
| Power Consumption | Active mode: 280 µA @ 1 MHz / 2.2 V; Standby: 1.6 µA; Off mode (RAM retention): 0.1 µA - extends coin-cell life to years in intermittent-sensing applications |
| Supply Range | 1.8 V to 3.6 V - compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline systems without external regulation |
Pinout & Package
LQFP-64 (10 mm × 10 mm, 0.5 mm pitch) package with exposed thermal pad (connected to DVSS). Pin functions validated per TI SLAS272H Figure 4-2 and Table 4-1 for MSP430F149 devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Digital supply voltage input | Primary power rail for CPU, timers, and digital I/O; requires local 100 nF decoupling |
| DVSS (Pin 63) | Digital ground reference | Return path for digital logic; must be low-impedance and separated from analog ground where possible |
| AVCC (Pin 64) | Analog supply voltage input | Independent 1.8–3.6 V rail for ADC and comparator; filtered separately from DVCC |
| AVSS (Pin 62) | Analog ground reference | Isolated return for analog circuitry; connected to DVSS only at single point near supply entry |
| RST/NMI (Pin 58) | Reset and non-maskable interrupt input | Active-low reset with built-in POR/PUC; also serves as NMI source for critical fault handling |
| P1.0/TACLK (Pin 12) | GPIO / Timer_A clock input | Configurable as general-purpose I/O or external clock source for Timer_A - enables precise event timing |
| P6.0–P6.7/A0–A7 (Pins 59–6, 2–6) | Analog input channels | Eight dedicated ADC inputs with programmable gain and sampling control - supports differential or single-ended acquisition |
| USART0/USART1 pins (e.g., P3.4/UTXD0, P3.5/URXD0, P3.6/UTXD1, P3.7/URXD1) | Asynchronous serial interface | Hardware UART support on both USARTs - eliminates bit-banging overhead and ensures reliable host communication |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with full RAM retention enables decade-scale battery life in metering applications |
| Fast wake-up from LPM3 | <6 µs transition to active mode - captures transient events (e.g., vibration, pulse) missed by slower MCUs |
| Integrated 12-bit ADC with autoscan | Automatically sequences across up to 8 channels without CPU involvement - reduces firmware complexity and power |
| Dual USARTs with SPI/UART flexibility | Two independent serial interfaces allow concurrent sensor network (SPI) and cloud gateway (UART) connectivity |
| Hardware multiplier | Accelerates fixed-point math (e.g., FFT, filtering, calibration) in <10 cycles - critical for real-time signal processing |
| Programmable code protection | Security fuse prevents unauthorized flash read-out - protects proprietary algorithms and device identity |
Applications
| Smart Utility Metering | Portable Gas Detector |
|---|---|
Use Scenario: Battery-powered residential electricity/water meters performing hourly consumption logging, tamper detection, and RF wake-up. IC Role / Device Role / Timing Role: Main system controller managing ADC sampling of shunt/CT sensors, RTC-driven scheduling, and low-power sleep/wake cycles. Use Value: 0.1 µA off-mode current extends 2xAA battery life beyond 10 years; dual USARTs enable simultaneous IR optical port and sub-GHz radio interface. |
Use Scenario: Handheld industrial gas analyzers using electrochemical or NDIR sensors requiring precision analog front-end control and alarm-triggered display update. IC Role / Device Role / Timing Role: Sensor hub coordinating 12-bit ADC reads, temperature compensation, buzzer activation, and LCD refresh via integrated peripherals. Use Value: Autoscan ADC and hardware multiplier enable real-time gas concentration calculation; <6 µs wake-up ensures immediate response to hazardous gas thresholds. |
| Wireless Sensor Node | Industrial Temperature Monitor |
Use Scenario: Mesh-networked environmental sensors deployed in HVAC ducts or factory floors, transmitting temperature/humidity data every 5 minutes via Zigbee or BLE. IC Role / Device Role / Timing Role: Edge intelligence unit executing sensor fusion, duty-cycled radio control, and secure over-the-air updates. Use Value: Dual USARTs support UART-based radio module control and SPI-connected environmental sensor array; 2KB RAM accommodates protocol stack buffers. |
Use Scenario: DIN-rail mounted panel monitor measuring 8 thermocouple inputs across manufacturing equipment, with local display and Modbus RTU output. IC Role / Device Role / Timing Role: Precision measurement controller performing cold-junction compensation, linearization, and deterministic Modbus response timing. Use Value: Eight dedicated ADC analog inputs (A0–A7) eliminate external MUX; internal reference ensures stable 12-bit accuracy across -40°C to +85°C operating range. |
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 |
|---|---|---|---|
| MSP430F149IPM | Same die, identical electrical specs and pinout; G4 suffix indicates enhanced green compliance (lead-free, RoHS-compliant finish) | No functional difference - suitable for new designs requiring latest environmental compliance | Select MSP430F149IPMRG4 when RoHS/REACH compliance documentation and Pb-free finish are mandatory |
| MSP430F1491IRTD | VQFN-64 (9 mm × 9 mm) package; same core, flash, RAM, and peripherals but different thermal and PCB layout characteristics | Better thermal performance and smaller footprint - preferred for space-constrained portable devices | Choose MSP430F1491IRTD when board area is constrained and reflow-compatible QFN assembly is available |
Compared with MSP430F149IPM, the MSP430F149IPMRG4 adds RoHS-compliant termination without altering functionality; versus MSP430F1491IRTD, it trades compactness and thermal efficiency for easier hand-soldering and legacy LQFP compatibility.
Availability
MSP430F149IPMRG4 is available at Aetrix Electronics and suitable for smart utility metering, portable gas detection, and wireless sensor node applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MSP430F149IPMRG4 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 ultra-low-power design.
The MSP430F149IPMRG4 belongs to TI's MSP430F14x family - engineered specifically for extended-battery-life measurement systems where precision analog integration, deterministic low-power operation, and robust peripheral set are critical.
FAQ
What is the maximum operating frequency of the MSP430F149IPMRG4?
The MSP430F149IPMRG4 supports a maximum system clock (MCLK) frequency of 8 MHz using the XT2 oscillator, or up to ~4.6 MHz using the internal DCO calibrated against a crystal reference. Its 16-bit RISC core executes instructions at 125 ns per cycle, delivering consistent throughput regardless of clock source selection.
Does the MSP430F149IPMRG4 support hardware UART on both USART modules?
Yes, the MSP430F149IPMRG4 supports full asynchronous UART operation on both USART0 and USART1 - confirmed in TI SLAS272H Section 1.1 and Table 3-1. Pins P3.4/UTXD0 and P3.5/URXD0 serve USART0, while P3.6/UTXD1 and P3.7/URXD1 serve USART1, enabling dual independent serial links.
How many ADC input channels does the MSP430F149IPMRG4 have, and are they all accessible on the LQFP-64 package?
The MSP430F149IPMRG4 features eight ADC input channels (A0–A7), all fully accessible on the LQFP-64 package via P6.0 through P6.7 (Pins 59–6, 2–6). This is explicitly documented in TI SLAS272H Figure 4-2 and Table 4-1, confirming direct routing without multiplexing limitations.
What is the purpose of the TBOUTH pin (Pin 51) on the MSP430F149IPMRG4?
The TBOUTH pin (Pin 51) on the MSP430F149IPMRG4 controls the high-impedance state of all Timer_B7 PWM outputs (TB0–TB6). When asserted, it forces all associated output pins into Hi-Z mode - essential for safe power sequencing, fault shutdown, or shared bus arbitration in motor control or lighting applications.
Is the MSP430F149IPMRG4 pin-compatible with other members of the MSP430F14x family?
Yes, the MSP430F149IPMRG4 shares identical pinout and package dimensions with MSP430F148IPM, MSP430F147IPM, and other 64-pin PM/PAG variants in the F14x family. Per TI SLAS272H Table 3-1 and Figure 4-2, all share the same 48 GPIO count, peripheral mapping, and power/ground pin locations - enabling hardware reuse across flash-size variants.
MSP430F149IPMRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- 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:
MSP430F149IPMRG4 FAQ
1.How can I place an order for MSP430F149IPMRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F149IPMRG4 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 MSP430F149IPMRG4 reliable?
The price and inventory of MSP430F149IPMRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F149IPMRG4 is usually 5 days.
3.What payment methods are accepted for MSP430F149IPMRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F149IPMRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F149IPMRG4?
MSP430F149IPMRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F149IPMRG4 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 MSP430F149IPMRG4?
For technical support, including MSP430F149IPMRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F149IPMRG4 requirements.
6.How does Aetrix verify that MSP430F149IPMRG4 is sourced from the original manufacturer or authorized distributors?
All MSP430F149IPMRG4 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 MSP430F149IPMRG4 meets industry standards.
7.What is the process for return or replacement of MSP430F149IPMRG4?
All MSP430F149IPMRG4 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F149IPMRG4, 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 MSP430F149IPMRG4 part is unused and in its original packaging.
Return procedure for MSP430F149IPMRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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