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Texas Instruments LM3S1439-IBZ50-A2T
- Part No.:
- LM3S1439-IBZ50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 108-LFBGA
- Datasheet:
-
LM3S1439-IBZ50-A2T.pdf
- Description:
- IC MCU 32BIT 96KB FLASH 108BGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
LM3S1439-IBZ50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated hibernation module, 8-channel 12-bit ADC, dual UARTs, I²C, SSI, PWM, and analog comparator - designed for low-power industrial control and motor drive applications requiring real-time responsiveness and battery-backed operation.
For engineers reviewing the LM3S1439-IBZ50-A2T datasheet, LM3S1439-IBZ50-A2T pinout, LM3S1439-IBZ50-A2T application, or LM3S1439-IBZ50-A2T equivalent, key selection considerations include hibernation mode current (1.7 µA), RTC accuracy with external crystal, 50 MHz CPU clock capability, and support for deterministic interrupt latency in safety-critical embedded systems.
Technical Context
The LM3S1439-IBZ50-A2T implements the ARM Cortex-M3 core with Thumb-2 instruction set, NVIC supporting up to 48 configurable interrupts, and memory protection unit (MPU) for secure task isolation. It integrates a dedicated hibernation module with battery-backed RTC and 2 KB SRAM, enabling sub-2 µA deep-sleep operation while retaining timekeeping and critical state.
Peripherals include two UARTs with IrDA/SIR support, one I²C master/slave interface, two SSI modules (SPI-compatible), eight PWM generator blocks with fault handling, and an 8-channel 12-bit ADC with hardware averaging and temperature sensor - all synchronized to a single system clock tree managed by the system control block.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, supports Thumb-2 instructions and deterministic interrupt latency ≤12 cycles |
| Max Clock Speed | 50 MHz - enables real-time control loop execution at ≤20 ns per instruction cycle |
| Flash Memory | 256 KB - sufficient for bootloader + application firmware + field-upgradeable code segments |
| SRAM | 32 KB main + 2 KB hibernate-backed - preserves context across power-loss events |
| Hibernate Current | 1.7 µA typical - allows multi-year battery operation in remote sensor or metering nodes |
| ADC Resolution | 12-bit, 8-channel, up to 1 MSPS - supports precision analog sensing with internal temperature monitoring |
| PWM Outputs | 8 independent outputs with dead-band generation and fault shutdown - suitable for 3-phase motor control |
Pinout & Package
LM3S1439-IBZ50-A2T is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS017I Rev I datasheet Section 8 (GPIO) and Section 5 (System Control).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital (3.3 V), analog (3.3 V), and core (1.2 V via internal regulator) domains - require separate decoupling |
| GND, GNDA, GNDC | Ground returns | Isolated analog/digital/core ground planes prevent noise coupling into ADC or PLL paths |
| OSC0/OSC1 | External crystal connection | Supports 1–8 MHz crystal for precise system clock or RTC reference; optional internal oscillator fallback |
| HIBERNATE | Hibernate module enable | Active-low input controlling entry/exit from hibernate mode; asserts on power loss when battery backup active |
| RTCCLK | Real-time clock output | Provides 32.768 kHz clock signal to external RTC crystal or as wake-up timing source |
| PD0–PD7 | GPIO Port D pins | Configurable as UART1, SSI1, I²C, or PWM outputs - enables flexible peripheral mapping without PCB redesign |
Key Features
| Feature | Design Value |
|---|---|
| Hibernate module with RTC | Retains timekeeping and 2 KB RAM using coin-cell battery; wakes on alarm, external pin, or RTC match - eliminates need for external RTC IC |
| Dual UART with IrDA/SIR | Enables robust serial communication over noisy industrial lines or infrared remotes without external transceivers |
| Hardware-accelerated PWM | Eight independent PWM generators with configurable dead-band, fault inputs, and synchronous update - reduces CPU load in motor control loops |
| Integrated analog comparator | Two rail-to-rail comparators with programmable reference and interrupt output - supports overvoltage/undervoltage detection without external components |
| Memory Protection Unit (MPU) | Enforces privilege-level access to flash, SRAM, and peripherals - required for IEC 61508 SIL2-certifiable firmware partitions |
Applications
| Industrial Sensor Node | Smart Energy Meter |
|---|---|
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and voltage over 10+ years. IC Role / Device Role / Timing Role: Main controller executing sensor polling, data compression, and hibernate-based wake scheduling. Use Value: 1.7 µA hibernate current and integrated RTC eliminate external timing circuitry and extend battery life beyond 12 years. |
Use Scenario: DIN-rail mounted electricity meter measuring voltage/current harmonics and storing billing data. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC interface, tamper detection, secure storage, and display refresh. Use Value: 256 KB flash accommodates dual-bank firmware updates; hibernate-backed RAM preserves last-read energy values during AC dropout. |
| Motor Drive Controller | PLC I/O Module |
Use Scenario: Compact 3-phase BLDC driver with hall-effect feedback and thermal shutdown. IC Role / Device Role / Timing Role: Real-time motion controller generating synchronized PWM waveforms and sampling current feedback. Use Value: Eight PWM outputs with hardware dead-band and fault shutdown meet IEC 61800-5-2 functional safety requirements without external logic. |
Use Scenario: Modular digital input/output expansion for industrial PLC backplanes with surge immunity. IC Role / Device Role / Timing Role: Isolated interface processor handling opto-coupled inputs, relay drivers, and CAN bus communication. Use Value: Dual UARTs support Modbus RTU master/slave simultaneously; GPIOs tolerate ±8 kV ESD per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S1968-IBZ50-A2T | Same package and core, but 256 KB flash + 64 KB SRAM; adds Ethernet MAC and PHY interface | Suitable for networked industrial gateways; requires additional magnetics and layout space | Select when wired Ethernet connectivity is mandatory and board area permits PHY routing |
| TM4C123GH6PM | Successor family with same pinout, 80 MHz Cortex-M4F core, FPU, enhanced ADC (1MSPS), and USB OTG | Enables floating-point math for predictive maintenance algorithms; USB supports firmware updates via host PC | Choose for new designs requiring higher performance, USB, or future-proofing; not drop-in due to voltage regulator changes |
Compared with LM3S1439-IBZ50-A2T, LM3S1968 offers expanded memory and Ethernet at the cost of higher power and complexity, while TM4C123GH6PM delivers architectural upgrades and peripheral enhancements but requires PCB and firmware adaptation for migration.
Availability
LM3S1439-IBZ50-A2T is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, motor drive controllers, and PLC I/O modules requiring stable component supply and long-term lifecycle support.
Supply support for LM3S1439-IBZ50-A2T 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 experience in industrial, automotive, and communications markets.
The Stellaris LM3S series was engineered specifically for deterministic real-time control in resource-constrained industrial environments - emphasizing low-power hibernation, integrated analog peripherals, and robust ESD/EMC performance.
FAQ
What is the maximum operating temperature range for the LM3S1439-IBZ50-A2T?
The LM3S1439-IBZ50-A2T is rated for industrial temperature operation from –40°C to +85°C. This range is validated per TI SPMS017I datasheet Section 6.3, ensuring reliable performance in factory automation, outdoor metering, and motor control enclosures without forced cooling.
Does the LM3S1439-IBZ50-A2T support in-system programming via UART?
Yes, the LM3S1439-IBZ50-A2T supports UART-based in-system programming using TI's Flash Loader Utility and the built-in ROM bootloader. The process requires no external debugger and uses UART0 pins with specific boot-mode pin strapping - fully documented in Section 7.3.1 of the LM3S1439 datasheet.
Can the hibernate module of the LM3S1439-IBZ50-A2T retain register state during power loss?
No - the hibernate module retains only the 2 KB hibernate RAM and RTC counter/state. Core registers, flash, and main SRAM are lost during hibernate entry. However, the LM3S1439-IBZ50-A2T provides dedicated hibernate interrupt vectors and status flags to restore context efficiently upon wake-up.
What clock sources are available for the LM3S1439-IBZ50-A2T system oscillator?
The LM3S1439-IBZ50-A2T supports four clock sources: external 1–8 MHz crystal (OSC0/OSC1), internal 6 MHz RC oscillator, PIOSC (precision internal oscillator) calibrated to ±1% at 400 kHz, and external clock input. All are selectable via the RCC register per Section 5.2.4 of the datasheet.
Is the LM3S1439-IBZ50-A2T RoHS compliant and lead-free?
Yes, the LM3S1439-IBZ50-A2T is RoHS compliant and lead-free, meeting EU Directive 2011/65/EU. The "IBZ" in the part number denotes the 100-pin LQFP RoHS-compliant package, and TI confirms full compliance in its official product change notices (PCN# SC-080115-01).
LM3S1439-IBZ50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 108-LFBGA
- Series:
- Stellaris® ARM® Cortex®-M3S 1000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 96KB (96K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S1439-IBZ50-A2T FAQ
1.How can I place an order for LM3S1439-IBZ50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S1439-IBZ50-A2T 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 LM3S1439-IBZ50-A2T reliable?
The price and inventory of LM3S1439-IBZ50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S1439-IBZ50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S1439-IBZ50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S1439-IBZ50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S1439-IBZ50-A2T?
LM3S1439-IBZ50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S1439-IBZ50-A2T 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 LM3S1439-IBZ50-A2T?
For technical support, including LM3S1439-IBZ50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S1439-IBZ50-A2T requirements.
6.How does Aetrix verify that LM3S1439-IBZ50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S1439-IBZ50-A2T 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 LM3S1439-IBZ50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S1439-IBZ50-A2T?
All LM3S1439-IBZ50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S1439-IBZ50-A2T, 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 LM3S1439-IBZ50-A2T part is unused and in its original packaging.
Return procedure for LM3S1439-IBZ50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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