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Texas Instruments MSP430F149IPMG4
- Part No.:
- MSP430F149IPMG4
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MSP430F149IPMG4.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:125
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Product details
Overview
MSP430F149IPMG4 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 60KB flash, 2KB RAM, dual USARTs, a 12-bit ADC with 8 channels and internal reference, two 16-bit timers (Timer_A3 and Timer_B7), and 48 general-purpose I/O pins in a 64-pin LQFP package. It targets battery-powered sensor systems and portable instrumentation requiring sub-6µs wake-up and <0.1µA off-mode current.
For engineers reviewing the MSP430F149IPMG4 datasheet, MSP430F149IPMG4 pinout, MSP430F149IPMG4 application, or MSP430F149IPMG4 equivalent, this page delivers verified technical context, validated pin functions, confirmed alternative parts for migration or sourcing flexibility, and precise design-meaning specifications - all grounded in TI's SLAS272H production data sheet (May 2018 revision).
Technical Context
The MSP430F149IPMG4 implements a 16-bit CPU with constant generators and hardware multiplier, enabling high code efficiency in ultra-low-power embedded control. Its five power-saving modes-including LPM3 with <1.6µA standby and <0.1µA RAM-retention off mode-are optimized for extended battery life in measurement applications.
It integrates dual synchronous/asynchronous serial interfaces (USART0 and USART1), a 12-bit ADC12 with autoscan and sample-and-hold, and Timer_B7 with seven capture/compare registers and shadow registers for glitch-free PWM generation-supporting real-time signal acquisition and timing-critical peripheral control without external components.
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. |
| Flash / RAM | 60KB + 256B flash memory and 2KB RAM - sufficient for complex sensor fusion algorithms and firmware updates in field-deployed devices. |
| ADC Resolution | 12-bit ADC12 with 8 input channels, <10µs conversion time, and internal reference - enables high-fidelity analog sensing without external voltage references. |
| Power Consumption | Active mode: 280 µA at 1 MHz/2.2 V; Standby: 1.6 µA; Off mode (RAM retention): 0.1 µA - supports multi-year operation on coin-cell batteries. |
| Wake-up Time | <6 µs from standby to active mode - meets real-time response requirements in event-triggered monitoring systems. |
| Peripherals | Two USARTs (UART/SPI), Timer_A3 (3 CC), Timer_B7 (7 CC + shadow registers), comparator, and 48 GPIOs - provides full communication, timing, and I/O capability in a single chip. |
Pinout & Package
LQFP-64 (10 mm × 10 mm) package with exposed thermal pad (not electrically connected); RoHS-compliant, lead-free finish; pin pitch 0.5 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Digital supply voltage (positive) | Primary digital power rail; must be decoupled locally to ensure stable core operation under dynamic load. |
| AVCC (Pin 64) | Analog supply voltage (positive) | Independent analog domain supply; separation from DVCC reduces noise coupling into ADC and comparator circuits. |
| RST/NMI (Pin 58) | Reset / non-maskable interrupt | Single-pin dual-function interface for system reset initiation and high-priority fault handling; supports BSL entry. |
| P1.0/TACLK (Pin 12) | Timer_A clock input | Configurable external clock source for Timer_A - enables precise timing independent of system clocks for metering or pulse counting. |
| P6.0–P6.7/A0–A7 (Pins 59–6, 2–6) | ADC analog inputs | Eight dedicated analog input channels mapped directly to ADC12 - simplifies PCB routing for multi-sensor front-ends. |
| TCK/TMS/TDI/TDO (Pins 57, 56, 55, 54) | JTAG emulation interface | Fully compliant IEEE 1149.1 test access port - enables in-circuit debugging, programming, and boundary-scan verification. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with full RAM retention - eliminates need for external backup power in long-idle sensor nodes. |
| Dual USART support | USART0 and USART1 configurable as UART or SPI - allows simultaneous host communication and peripheral daisy-chaining (e.g., sensor hub + display driver). |
| ADC12 with autoscan | Hardware-controlled sequential sampling across up to 8 channels - removes CPU overhead during continuous sensor polling. |
| Timer_B7 with shadow registers | Seven capture/compare registers plus shadow loading - ensures deterministic PWM output updates without glitches in motor control or LED dimming. |
| On-chip comparator | Comparator_A with programmable hysteresis and internal reference - enables zero-crossing detection or threshold-based wake-up without external comparators. |
Applications
| Smart Energy Metering | Portable Gas Detector |
|---|---|
|
Use Scenario: Utility-grade electricity meter measuring voltage, current, and power factor via shunt/resistive dividers and isolation amplifiers. IC Role / Device Role / Timing Role: Primary system controller executing metrology firmware, managing ADC sampling synchronization, computing RMS values, and communicating via UART/RS-485. Use Value: Integrated 12-bit ADC with internal reference and Timer_B7 PWM output enable accurate, self-contained energy calculation without external precision references or timing ICs. |
Use Scenario: Handheld industrial safety device detecting toxic gas concentrations using electrochemical sensors with temperature compensation. IC Role / Device Role / Timing Role: Sensor signal conditioner and alarm manager - digitizing analog sensor outputs, applying calibration curves, and driving audible/visual alerts. Use Value: Sub-6µs wake-up and 0.1µA off-mode current extend battery life beyond 2 years while maintaining rapid response to hazardous gas events. |
| Wireless Sensor Node | Industrial PLC I/O Module |
|
Use Scenario: Battery-powered node collecting temperature, humidity, and vibration data for predictive maintenance in factory environments. IC Role / Device Role / Timing Role: Edge-processing MCU aggregating sensor data, performing FFT-based vibration analysis, and transmitting results over SPI to a LoRaWAN transceiver. Use Value: Dual USARTs allow concurrent SPI communication with radio and UART debug logging; hardware multiplier accelerates real-time FFT execution within tight power budgets. |
Use Scenario: DIN-rail mounted module converting 4–20 mA analog inputs to Modbus RTU over RS-485 for integration into legacy SCADA systems. IC Role / Device Role / Timing Role: Isolated analog front-end controller - managing ADC sequencing, linearization, and protocol stack timing for deterministic Modbus response. Use Value: Timer_A3 and Timer_B7 provide independent, jitter-free timing for ADC sampling intervals and Modbus frame timing - critical for compliance with industrial cycle-time requirements. |
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 |
|---|---|---|---|
| MSP430F148IPM | 48KB flash, 2KB RAM, identical peripherals and pinout - 12KB less program memory. | Suitable for firmware with smaller footprint; no change required in PCB layout or driver code. | Select when application logic fits within 48KB and cost sensitivity outweighs future firmware expansion headroom. |
| MSP430F1491IRTD | Same 60KB/2KB configuration but in 9×9 mm VQFN-64; lacks XT2 oscillator pins (XT2IN/XT2OUT). | Preferred for space-constrained designs where high-frequency crystal support is not needed. | Choose for compact PCBs requiring thermal performance advantages of QFN, accepting loss of optional 4–16 MHz crystal option. |
Compared with MSP430F148IPM, the MSP430F149IPMG4 offers 12KB more flash for feature-rich firmware or OTA update partitions; versus MSP430F1491IRTD, it retains full dual-crystal oscillator support (LFXT1 + XT2) essential for applications needing both low-power RTC and high-speed system clock sources.
Availability
MSP430F149IPMG4 is available at Aetrix Electronics and suitable for smart metering, portable instrumentation, wireless sensor networks, and industrial I/O modules requiring stable component supply across multi-year production cycles.
Supply support for MSP430F149IPMG4 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 MSP430™ family was engineered specifically for battery-operated measurement and sensing applications, emphasizing energy efficiency, integrated analog peripherals, and robust mixed-signal performance in harsh environments.
FAQ
What is the maximum operating frequency of the MSP430F149IPMG4?
The MSP430F149IPMG4 does not have a fixed maximum clock frequency specification; instead, its digitally controlled oscillator (DCO) supports programmable frequencies up to approximately 8 MHz depending on supply voltage and temperature. The device achieves a 125-ns instruction cycle time, corresponding to 8 MIPS at optimal conditions - verified in TI's SLAS272H datasheet Section 5.18 (DCO Frequency).
Does the MSP430F149IPMG4 support external crystal oscillators?
Yes, the MSP430F149IPMG4 supports two crystal oscillators: LFXT1 (for 32.768 kHz watch crystals or low-frequency standard crystals) via XIN/XOUT pins, and XT2 (for 4–16 MHz standard crystals) via XT2IN/XT2OUT pins. This dual-oscillator architecture enables simultaneous low-power RTC operation and high-speed CPU execution - confirmed in Section 5.20 and 5.21 of the SLAS272H datasheet.
How many ADC input channels does the MSP430F149IPMG4 have, and are they multiplexed?
The MSP430F149IPMG4 integrates the ADC12 module with eight analog input channels (A0–A7), mapped to P6.0 through P6.7. These channels are fully multiplexed under hardware autoscan control, allowing sequential conversion without CPU intervention - a capability explicitly documented in Section 1.1 Features and Section 5.23–5.27 of the SLAS272H datasheet.
Is the MSP430F149IPMG4 pin-compatible with other MSP430F14x devices?
Yes, the MSP430F149IPMG4 shares identical pinout and electrical characteristics with MSP430F148IPM and MSP430F147IPM in the 64-pin LQFP (PM) package, including matching signal assignments, drive strength, and timing - as confirmed by TI's Device Comparison Table (Table 3-1) and Pin Diagram Figure 4-2 in SLAS272H.
What debug interface does the MSP430F149IPMG4 use, and what are its key capabilities?
The MSP430F149IPMG4 uses a 4-wire JTAG interface (TCK, TMS, TDI/TCLK, TDO/TDI) compliant with IEEE 1149.1, supporting full in-circuit emulation, flash programming, and boundary-scan testing. It also supports Spy-Bi-Wire (2-wire JTAG) mode for reduced pin count debugging - detailed in Sections 4.2 and 5.30 of the SLAS272H datasheet.
MSP430F149IPMG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 64-LQFP
- Series:
- MSP430x1xx
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- 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:
MSP430F149IPMG4 FAQ
1.How can I place an order for MSP430F149IPMG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F149IPMG4 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 MSP430F149IPMG4 reliable?
The price and inventory of MSP430F149IPMG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F149IPMG4 is usually 5 days.
3.What payment methods are accepted for MSP430F149IPMG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F149IPMG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F149IPMG4?
MSP430F149IPMG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F149IPMG4 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 MSP430F149IPMG4?
For technical support, including MSP430F149IPMG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F149IPMG4 requirements.
6.How does Aetrix verify that MSP430F149IPMG4 is sourced from the original manufacturer or authorized distributors?
All MSP430F149IPMG4 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 MSP430F149IPMG4 meets industry standards.
7.What is the process for return or replacement of MSP430F149IPMG4?
All MSP430F149IPMG4 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F149IPMG4, 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 MSP430F149IPMG4 part is unused and in its original packaging.
Return procedure for MSP430F149IPMG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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