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Texas Instruments LM3S2739-IQC50-A2
- Part No.:
- LM3S2739-IQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2739-IQC50-A2.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,280
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Product details
Overview
LM3S2739-IQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0A/B controller, 12-bit ADC (up to 1 MSPS), and hibernation module supporting RTC and battery-backed memory. It operates at 50 MHz and targets motor control, industrial automation, and embedded systems requiring deterministic real-time response.
For engineers reviewing the LM3S2739-IQC50-A2 datasheet, LM3S2739-IQC50-A2 pinout, LM3S2739-IQC50-A2 application, or LM3S2739-IQC50-A2 equivalent, key selection criteria include its integrated CAN interface, hibernation power management, dual 32-bit general-purpose timers with PWM capability, and support for JTAG/SWD debug in a 100-pin LQFP package.
Technical Context
The LM3S2739-IQC50-A2 implements the ARM Cortex-M3 core with Thumb-2 instruction set, nested vectored interrupt controller (NVIC), and memory protection unit (MPU). It integrates a dedicated hibernation module with RTC, battery-backed RAM, and wake-up sources including external pins and RTC match events.
Peripherals include two UARTs (one with IrDA/SIR), two SSI modules, one I²C master/slave, a 12-channel 12-bit ADC with hardware averaging, four 32-bit GPTMs (two configurable as 16-bit pairs), and a single CAN 2.0B-compliant controller with 32 message objects and programmable FIFO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz with 1.25 DMIPS/MHz performance |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface and 128-byte erase sectors |
| SRAM | 64 KB on-chip SRAM with zero-wait-state access at full speed |
| ADC | 12-bit successive approximation ADC with 12 input channels, up to 1 MSPS sampling rate, and hardware averaging |
| CAN Interface | One CAN 2.0B-compliant controller supporting both standard and extended frames, 32 message objects, and programmable FIFO |
| Hibernation Module | Dedicated low-power domain with RTC, 2 KB battery-backed RAM, and wake-up from deep-sleep via RTC match or external pin |
| Package | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, JEDEC MO-152AC |
Pinout & Package
LM3S2739-IQC50-A2 is housed in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per TI SPMS054I datasheet Rev I (July 2014), with dedicated JTAG/SWD debug pins, CANH/CANL differential pair, hibernation control signals (HIBERNATE, WAKE), and multiplexed GPIOs supporting peripheral functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core Power Supply | 3.3 V nominal supply for CPU, memory, and digital peripherals; requires local 100 nF decoupling |
| VDDA | Analog Power Supply | 3.3 V analog supply for ADC and internal voltage reference; must be filtered separately from VDD |
| CAN0RX / CAN0TX | CAN Physical Layer Interface | Differential receive/transmit pins for CAN0 controller; require external transceiver and termination |
| HIBERNATE | Hibernation Control Input | Active-low signal enabling hibernation mode; driven by system logic or external switch |
| WAKE | Wake-Up Trigger Input | Edge-sensitive input that wakes device from hibernation when asserted (rising edge) |
| nRST | Reset Input | Active-low asynchronous reset; internal pull-up ensures valid state during power-up |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | Enables robust fieldbus communication without external CAN controller; supports bit rates up to 1 Mbps with automatic retransmission and error handling |
| Hibernation Module with RTC | Reduces system standby power to < 10 µA while maintaining timekeeping and retaining 2 KB of RAM using backup battery |
| Hardware-Accelerated ADC Averaging | Performs up to 64-sample hardware averaging per conversion to improve SNR without CPU overhead |
| Dual 32-Bit General-Purpose Timers | Each timer supports one-shot, periodic, RTC, PWM, and input capture modes; can be combined into 64-bit counter for extended timing range |
| JTAG + SWD Debug Support | Provides full boundary-scan, flash programming, and real-time debugging via standard ARM tools without requiring additional debug hardware |
Applications
| Industrial Motor Control | Building Automation Node |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC blowers with position feedback and current sensing. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, ADC sampling synchronization, and CAN-based command/response messaging. Use Value: Deterministic 50 MHz Cortex-M3 execution and dual GPTMs enable precise 20 kHz PWM carrier with sub-microsecond timer resolution for current loop control. |
Use Scenario: Distributed sensor node aggregating temperature, occupancy, and lighting status across multiple zones. IC Role / Device Role / Timing Role: Sensor data acquisition (ADC), local decision logic, CAN bus communication with central controller, and low-power hibernation between polling intervals. Use Value: Integrated hibernation module reduces average node power to < 15 µA during idle periods while preserving RTC and sensor history in battery-backed RAM. |
| Automotive Body Control Module | Energy Monitoring Gateway |
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: CAN message handling (ISO 11898-1), GPIO-driven actuator control, watchdog supervision, and fault logging to flash memory. Use Value: Single-CAN controller with 32 message objects supports concurrent handling of diagnostic (UDS), body control, and comfort messages without software queuing overhead. |
Use Scenario: Smart metering gateway collecting current/voltage samples from CT/PT sensors and reporting via CAN to utility concentrator. IC Role / Device Role / Timing Role: High-speed ADC sampling synchronized to line cycle, real-time energy calculation, CAN frame assembly, and secure flash-based event logging. Use Value: 12-bit ADC with hardware averaging achieves > 10-bit effective resolution at 10 kSPS for accurate RMS and harmonic analysis without DSP co-processor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2678-IQC50-A2 | Same core and package but lacks CAN controller; includes Ethernet MAC and PHY interface instead | Suitable for wired networked devices where CAN is unnecessary but 10/100 Mbps Ethernet is required | Select LM3S2678-IQC50-A2 only if Ethernet connectivity outweighs CAN bus requirements |
| Tiva C TM4C123GH6PM | Successor family with enhanced Cortex-M4F core, floating-point unit, higher clock (80 MHz), and updated peripheral set; pin-compatible in 64-pin LQFP but not 100-pin | Offers improved computational throughput and DSP capability for advanced motor control or audio processing | TM4C123GH6PM requires PCB redesign due to different pin count and layout; migration path for new designs needing higher performance |
Compared with LM3S2739-IQC50-A2, LM3S2678-IQC50-A2 trades CAN for Ethernet-making it unsuitable for fieldbus networks but viable for LAN-connected nodes-while TM4C123GH6PM delivers greater compute headroom and modern peripherals at the cost of board-level incompatibility and higher BOM complexity.
Availability
LM3S2739-IQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, building automation, automotive body electronics, and energy monitoring systems requiring stable component supply, long-term lifecycle support, and qualified automotive-grade temperature operation.
Supply support for LM3S2739-IQC50-A2 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 wireless technologies, with decades of experience in high-reliability microcontrollers for industrial and automotive markets.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications demanding integrated connectivity (CAN, UART, I²C), low-power operation, and deterministic interrupt latency-targeting motor drives, PLCs, and intelligent sensors.
FAQ
What is the maximum operating frequency of the LM3S2739-IQC50-A2?
The LM3S2739-IQC50-A2 operates at a maximum system clock frequency of 50 MHz, derived from an internal PLL locked to the precision internal oscillator or an external crystal. This frequency is fully supported across all operating conditions specified in the datasheet (–40°C to +105°C ambient, 3.0 V to 3.6 V supply), and all peripherals-including ADC, timers, and CAN-are rated for synchronous operation at this speed.
Does the LM3S2739-IQC50-A2 support CAN FD or only classical CAN?
The LM3S2739-IQC50-A2 supports only Classical CAN (ISO 11898-1:2003), compliant with CAN 2.0A and 2.0B specifications. It does not implement CAN FD features such as flexible data-rate, extended payload length, or CRC enhancements. Its CAN controller handles standard (11-bit) and extended (29-bit) identifiers, bit rates up to 1 Mbps, and automatic retransmission on error-but no FD frame formatting or arbitration-phase bitrate switching.
How much battery-backed memory is available in hibernation mode on the LM3S2739-IQC50-A2?
The LM3S2739-IQC50-A2 provides 2 KB of battery-backed RAM within its hibernation module, accessible only when the device is in hibernation or waking from it. This memory retains data across full power cycles when supplied by an external backup battery (VBAT), and is used to store critical state variables, RTC configuration, and sensor logs without consuming main supply current.
Is the LM3S2739-IQC50-A2 pin-compatible with other LM3S devices in the same package?
No-LM3S2739-IQC50-A2 is not universally pin-compatible with other LM3S devices in 100-pin LQFP. While many GPIO and peripheral signals align, key differences exist: the LM3S2739 includes dedicated CAN0RX/CAN0TX pins and hibernation control signals (HIBERNATE, WAKE) absent in non-CAN or non-hibernation variants. Pin mapping must be verified per device-specific datasheet tables before substitution.
What debug interfaces does the LM3S2739-IQC50-A2 support?
The LM3S2739-IQC50-A2 supports both JTAG and Serial Wire Debug (SWD) interfaces via dedicated pins (TCK, TMS, TDI, TDO, nTRST, SWCLK, SWDIO). SWD is a 2-pin alternative to full JTAG, offering identical debug functionality-including flash programming, register inspection, and real-time breakpoint control-with reduced pin count and simplified board routing.
LM3S2739-IQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 56
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 64K 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:
LM3S2739-IQC50-A2 FAQ
1.How can I place an order for LM3S2739-IQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2739-IQC50-A2 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 LM3S2739-IQC50-A2 reliable?
The price and inventory of LM3S2739-IQC50-A2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2739-IQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2739-IQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2739-IQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2739-IQC50-A2?
LM3S2739-IQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2739-IQC50-A2 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 LM3S2739-IQC50-A2?
For technical support, including LM3S2739-IQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2739-IQC50-A2 requirements.
6.How does Aetrix verify that LM3S2739-IQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2739-IQC50-A2 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 LM3S2739-IQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2739-IQC50-A2?
All LM3S2739-IQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2739-IQC50-A2, 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 LM3S2739-IQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S2739-IQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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