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Texas Instruments LM3S2739-EQC50-A2
- Part No.:
- LM3S2739-EQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2739-EQC50-A2.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,104
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Product details
Overview
LM3S2739-EQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0B 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 and industrial automation systems requiring deterministic real-time response.
For engineers reviewing the LM3S2739-EQC50-A2 datasheet, LM3S2739-EQC50-A2 pinout, LM3S2739-EQC50-A2 application, or LM3S2739-EQC50-A2 equivalent, key selection criteria include its integrated CAN interface, hibernation power management, 12-bit ADC sampling rate, and QFP-100 package compatibility with industrial temperature range operation.
Technical Context
The LM3S2739-EQC50-A2 implements the ARM Cortex-M3 core with nested vectored interrupt controller (NVIC), memory protection unit (MPU), and SysTick timer. It integrates dual 32-bit general-purpose timers, four UARTs (one with IrDA/SIR), two SSI modules, and an I²C interface - all clocked from a configurable PLL-based system clock up to 50 MHz.
Its analog subsystem includes a 12-bit, 8-channel ADC with hardware averaging and differential input support, while the hibernation module provides RTC, battery-backed RAM, and wake-on-RTC/external-pin capability - enabling ultra-low-power operation down to 1.8 µA in hibernate mode with RTC active.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, supports Thumb-2 instruction set for code density and performance efficiency |
| Max Clock Speed | 50 MHz - enables deterministic real-time execution with sub-1µs interrupt latency |
| Flash / SRAM | 256 KB flash (programmable in 1 KB sectors) + 64 KB SRAM - sufficient for complex motor control algorithms and communication stacks |
| ADC | 12-bit, 8-channel, up to 1 MSPS sampling rate with hardware averaging - suitable for precision current/voltage sensing in drives |
| CAN Interface | One CAN 2.0B controller with 32 message objects - supports robust fieldbus communication in industrial networks |
| Hibernate Current | 1.8 µA with RTC running - enables battery-powered remote nodes with multi-year operation |
| Operating Temp | –40°C to +105°C - qualified for under-hood automotive and harsh industrial environments |
| Package | 100-pin LQFP (EQC suffix), 14 × 14 mm body, 0.5 mm pitch - compatible with standard surface-mount assembly processes |
Pinout & Package
LM3S2739-EQC50-A2 is housed in a 100-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad, rated for industrial temperature range (–40°C to +105°C). Pinout supports full peripheral multiplexing including CANH/CANL, multiple UART/SSI/I²C channels, GPIOs with slew-rate control, and dedicated hibernate wake pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital core (VDDC), analog (VDDA), and I/O (VDD) rails - require separate decoupling for noise-sensitive ADC/CAN operation |
| GND, GNDA, GNDC | Ground returns | Analog ground (GNDA) must be isolated from digital return paths to maintain 12-bit ADC accuracy |
| CAN0RX / CAN0TX | CAN physical layer interface | Differential pair for ISO 11898-compliant CAN bus connection - requires external transceiver and termination |
| HIBERNATE | Hibernate enable input | Active-low signal that initiates hibernation mode; tied high via pull-up when not used |
| RTCCLK | Real-time clock input | Accepts 32.768 kHz crystal or external clock for RTC and hibernate timing accuracy |
| PD0 / PD1 | UART0 RX/TX | Primary debug UART interface - commonly used for bootloader and firmware update over serial |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B Controller | 32 message objects with maskable acceptance filtering - eliminates need for external CAN protocol IC in motor drive nodes |
| Hibernate Module with RTC | Retains timekeeping and 2 KB of RAM during deep sleep at 1.8 µA - enables energy harvesting or battery-only operation |
| 12-bit ADC with Hardware Averaging | Up to 16-sample hardware averaging per conversion - improves SNR without CPU overhead in current-sensing applications |
| Multiple Serial Interfaces | 4 UARTs (1 with IrDA), 2 SSI, 1 I²C - supports simultaneous communication with displays, sensors, and host controllers |
| Motor Control Timers | Dual 32-bit GPTMs with PWM, capture, and quadrature encoder support - directly interfaces with gate drivers and position feedback |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors in HVAC blowers and pump systems using FOC algorithms. IC Role / Device Role / Timing Role: Real-time execution engine managing PWM generation, current sampling, and CAN-based command reception. Use Value: Deterministic 50 MHz Cortex-M3 execution and integrated CAN reduce BOM count and improve EMI resilience versus discrete MCU+CAN solutions. | Use Scenario: Centralized control of door locks, lighting, and window lifts in 12 V vehicle architectures. IC Role / Device Role / Timing Role: System coordinator interfacing with LIN/CAN networks and driving local solenoids/LEDs via GPIO and PWM. Use Value: Hibernate mode with RTC enables always-on wake-on-keyfob signals while consuming <2 µA - extending battery life in parked vehicles. |
| Smart Energy Meters | Programmable Logic Controllers (PLCs) |
Use Scenario: Two-way communication and tariff switching in ANSI C12.19-compliant electricity meters with tamper detection. IC Role / Device Role / Timing Role: Secure data concentrator handling metrology ADC reads, encryption, and RF/CAN backhaul. Use Value: 256 KB flash stores dual firmware images for secure OTA updates; hibernate mode maintains time sync during power outages. | Use Scenario: Compact remote I/O modules performing logic sequencing, analog monitoring, and fieldbus bridging in factory automation. IC Role / Device Role / Timing Role: Deterministic real-time controller executing ladder logic and managing distributed I/O over CANopen or Modbus RTU. Use Value: Integrated CAN 2.0B and 12-bit ADC eliminate external interface ICs - reducing footprint and qualification effort for industrial certifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Tiva C TM4C123GH6PM | Successor part with same pinout, 80 MHz Cortex-M4F core, FPU, enhanced peripherals, and updated silicon revision | Supports floating-point math-intensive control loops and USB device/host; lacks hibernate module with battery-backed RAM | Select when migrating legacy LM3S designs to higher performance or requiring USB connectivity |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, 64 KB SRAM, but no native CAN 2.0B controller - requires external transceiver and software stack | Better suited for cost-sensitive consumer applications; lacks hibernate power optimization and integrated RTC battery backup | Select when CAN is optional or implemented via external IC, and lower unit cost is prioritized over industrial low-power features |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S2739-EQC50-A2 offers unique hibernate-mode power efficiency with RTC and battery-backed memory, plus native CAN 2.0B - making it optimal for battery-constrained industrial nodes where deterministic real-time response and fieldbus integration are critical.
Availability
LM3S2739-EQC50-A2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart energy meters, and programmable logic controllers requiring stable component supply across extended product lifecycles.
Supply support for LM3S2739-EQC50-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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.
The Stellaris LM3S family was designed specifically for cost-sensitive, real-time embedded applications requiring integrated connectivity (CAN, UART, I²C), analog sensing, and ultra-low-power hibernation - targeting industrial automation and automotive subsystems before the Tiva C series succeeded it.
FAQ
What is the maximum operating frequency of the LM3S2739-EQC50-A2?
The LM3S2739-EQC50-A2 operates at a maximum system clock frequency of 50 MHz, achieved via an internal PLL that accepts a 1–25 MHz crystal or external clock source. This frequency enables sub-microsecond interrupt response and supports real-time motor control algorithms without external acceleration. The LM3S2739-EQC50-A2 maintains timing specifications across its full industrial temperature range (–40°C to +105°C).
Does the LM3S2739-EQC50-A2 include a hardware CAN controller?
Yes, the LM3S2739-EQC50-A2 integrates a single CAN 2.0B-compliant controller with 32 message objects, programmable acceptance filtering, and automatic retransmission. It supports bit rates up to 1 Mbps and requires only an external CAN transceiver (e.g., SN65HVD230) for physical layer compliance. The LM3S2739-EQC50-A2's CAN module is fully register-compatible with TI's StellarisWare driver library.
What power-saving modes does the LM3S2739-EQC50-A2 support?
The LM3S2739-EQC50-A2 supports Sleep, Deep-Sleep, and Hibernate modes. Hibernate mode draws just 1.8 µA while retaining RTC operation and 2 KB of battery-backed SRAM. Wake-up sources include RTC match, external GPIO, and CAN activity. This makes the LM3S2739-EQC50-A2 ideal for battery-powered remote sensors and metering applications where multi-year operation is required.
Is the LM3S2739-EQC50-A2 pin-compatible with other Stellaris devices?
The LM3S2739-EQC50-A2 uses a 100-pin LQFP package (EQC suffix) shared with several LM3S devices, including LM3S8962 and LM3S811, but pin functions differ significantly due to peripheral configuration. While mechanical footprint matches, electrical pin mapping is not interchangeable - PCB layout must be verified against the LM3S2739-EQC50-A2-specific pinout table in the datasheet before reuse.
What development tools are supported for the LM3S2739-EQC50-A2?
The LM3S2739-EQC50-A2 is supported by TI's Code Composer Studio IDE, Keil MDK-ARM, and IAR Embedded Workbench. TI provides StellarisWare Peripheral Driver Library and evaluation boards such as the EK-LM3S8962. Debugging uses JTAG/SWD via the LM3S2739-EQC50-A2's dedicated SWDIO/SWCLK pins, and TI's In-Circuit Debug Interface (ICDI) firmware enables drag-and-drop programming.
LM3S2739-EQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2739-EQC50-A2 FAQ
1.How can I place an order for LM3S2739-EQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2739-EQC50-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-EQC50-A2 reliable?
The price and inventory of LM3S2739-EQC50-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-EQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2739-EQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2739-EQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2739-EQC50-A2?
LM3S2739-EQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2739-EQC50-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-EQC50-A2?
For technical support, including LM3S2739-EQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2739-EQC50-A2 requirements.
6.How does Aetrix verify that LM3S2739-EQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2739-EQC50-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-EQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2739-EQC50-A2?
All LM3S2739-EQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2739-EQC50-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-EQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S2739-EQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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