My Inquiry
My Account
Texas Instruments LM3S2739-EQC50-A2T
- Part No.:
- LM3S2739-EQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2739-EQC50-A2T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM3S2739-EQC50-A2T 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 1-MSPS ADC (8-channel), and hibernation module supporting RTC and battery-backed memory. It operates at 50 MHz and targets motor control, industrial sensing, and embedded automation systems requiring deterministic real-time response.
For engineers reviewing the LM3S2739-EQC50-A2T datasheet, LM3S2739-EQC50-A2T pinout, LM3S2739-EQC50-A2T application, or LM3S2739-EQC50-A2T equivalent, key selection criteria include its dual UART + SSI + I²C + CAN peripheral set, hibernation power management down to 1.8 µA, and qualification for industrial temperature range (–40°C to +105°C).
Technical Context
The LM3S2739-EQC50-A2T implements the ARM Cortex-M3 core with NVIC, SysTick, MPU, and TPIU debug support. It integrates a hibernation module with RTC, battery-backed RAM, and wake-on-RTC/external-pin capability - enabling ultra-low-power sleep states without external components.
Its analog subsystem includes an 8-channel, 12-bit ADC with hardware averaging and temperature sensor; digital peripherals include two UARTs (one with IrDA/SIR), two SSI, one I²C, and a full CAN 2.0B controller with 32 message objects and programmable FIFO behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 @ 50 MHz - delivers deterministic interrupt latency & Thumb-2 instruction efficiency for real-time control loops. |
| Memory | 256 KB on-chip flash + 64 KB SRAM - supports firmware updates in-place and large buffer handling for CAN/UART streaming. |
| ADC | 12-bit, 1-MSPS, 8-channel with hardware averaging - enables high-resolution sensor acquisition with noise suppression in motor feedback paths. |
| CAN Interface | CAN 2.0B compliant with 32 message objects and configurable FIFO - handles multi-node industrial bus traffic with prioritized message arbitration. |
| Hibernation Mode | 1.8 µA typical current draw with RTC running and 2 KB battery-backed RAM - sustains timekeeping and state retention during extended power-off periods. |
| Operating Temp | –40°C to +105°C - qualified for under-hood automotive, factory-floor PLC, and outdoor industrial environments. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - provides full peripheral access and thermal performance for convection-cooled designs. |
Pinout & Package
LM3S2739-EQC50-A2T is housed in a 100-pin LQFP package (JEDEC MO-220, variant WG). Pinout supports full peripheral mapping including dedicated CANH/CANL, dual UART TX/RX, SSI0/SSI1 clock/data lines, I²C SCL/SDA, ADC inputs, GPIOs with slew-rate control, and hibernation-specific pins (HIB, RTCCLK, VDDHIB, VBAT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PA0–PA7 | GPIO Port A | Configurable as ADC0 inputs, UART0/1 I/O, SSI0/1 signals, or general-purpose I/O with interrupt capability. |
| PB0–PB7 | GPIO Port B | Supports CAN0 RX/TX, UART0/1, SSI0/1, and PWM outputs - enables multiplexed peripheral routing without external logic. |
| PC0–PC7 | GPIO Port C | Includes I²C0 SCL/SDA, ADC0 inputs, and hibernation control (HIB, RTCCLK) - critical for low-power system coordination. |
| PD0–PD7 | GPIO Port D | Provides UART1, SSI1, and timer capture/compare functions - used for secondary serial interface and timing-critical edge detection. |
| PE0–PE5 | GPIO Port E | Dedicated to ADC0 channels (AIN0–AIN5), internal temperature sensor, and analog comparator inputs - ensures clean analog signal path. |
| VDD, VDDA, VDDHIB, VBAT | Power Supply Rails | Separate digital/analog/hibernation domains enable noise isolation and independent power gating during sleep. |
| CAN0RX / CAN0TX | CAN Physical Interface | Dedicated differential pair pins compatible with ISO 11898-2 transceivers - no external level-shifting required. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Enables sub-2 µA sleep with RTC and 2 KB SRAM retention - eliminates need for external RTC + backup battery circuitry. |
| CAN 2.0B Controller | 32 message objects with mask-based filtering and programmable FIFO - reduces CPU overhead in multi-message CAN networks. |
| Integrated Temperature Sensor | On-die sensor calibrated to ±3°C accuracy - allows board-level thermal monitoring without external components. |
| Hardware ADC Averaging | Up to 64-sample hardware averaging per conversion - improves effective resolution and reduces software filtering load. |
| Multiple Serial Interfaces | 2× UART (1 with IrDA), 2× SSI, 1× I²C - supports simultaneous communication with sensors, displays, and fieldbus nodes. |
Applications
| Industrial Motor Control | Building Automation Node |
|---|---|
|
Use Scenario: Closed-loop control of BLDC motors in HVAC actuators using encoder feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, ADC sampling of current/voltage, and CAN-based command distribution across zone controllers. Use Value: Deterministic 50 MHz Cortex-M3 execution and dual 16-bit timers with quadrature decode support ensure precise commutation timing and jitter-free PWM generation. |
Use Scenario: Distributed sensor node aggregating temperature, humidity, and occupancy data in commercial HVAC systems. IC Role / Device Role / Timing Role: Data acquisition hub interfacing analog sensors via ADC, communicating over CAN to central BMS, and maintaining time-stamped logs via hibernation RTC. Use Value: Integrated hibernation module retains time and configuration during mains outage, while CAN 2.0B ensures robust multi-drop communication in electrically noisy duct environments. |
| Automotive Body Control | Programmable Logic Controller (PLC) I/O Module |
|
Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting with LIN/CAN gateway functionality. IC Role / Device Role / Timing Role: CAN endpoint with message filtering and local GPIO/PWM control; UART bridging to LIN transceiver. Use Value: Single-chip integration of CAN PHY interface, 12-bit ADC for potentiometer position sensing, and hibernation-aware wake-on-keypress reduces BOM count and PCB area. |
Use Scenario: DIN-rail mounted I/O expansion module accepting analog inputs (0–10 V, 4–20 mA) and driving relay outputs in factory automation. IC Role / Device Role / Timing Role: Analog front-end processor with hardware averaging, isolated CAN master for backplane communication, and watchdog supervision of fieldbus stack. Use Value: 1-MSPS ADC with programmable sample sequencing enables synchronized acquisition across 8 channels, critical for anti-aliasing in high-speed motion control feedback. |
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, floating-point unit, and enhanced CAN/FIFO depth; requires minor firmware adaptation. | Higher computational throughput for sensor fusion or advanced motor control; not qualified for 105°C operation. | Select when migrating legacy LM3S designs toward extended lifecycle support and FPU-enabled algorithms. |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, 64 KB SRAM, but lacks integrated hibernation module and CAN message object hardware FIFO. | Requires external RTC and discrete CAN controller for equivalent low-power and bus-load handling capabilities. | Select when leveraging STM32 ecosystem tools and needing higher clock speed, accepting added component count for hibernation/CAN features. |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S2739-EQC50-A2T uniquely combines industrial-temperature hibernation, hardware CAN FIFO, and integrated temperature sensing in a single 100-pin LQFP - making it optimal for cost-sensitive, space-constrained, and ultra-low-power industrial endpoints where firmware compatibility with StellarisWare is maintained.
Availability
LM3S2739-EQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, building automation nodes, automotive body modules, and programmable logic controller I/O modules requiring stable component supply and long-term obsolescence management.
Supply support for LM3S2739-EQC50-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 LM3S2739 belongs to the Stellaris® ARM® Cortex™-M3 microcontroller family, designed specifically for deterministic real-time control in resource-constrained industrial and automotive applications - emphasizing low-latency interrupt response, integrated analog peripherals, and robust power management.
FAQ
What is the maximum operating frequency of the LM3S2739-EQC50-A2T?
The LM3S2739-EQC50-A2T operates at a maximum system clock frequency of 50 MHz. This is achieved using the internal PLL driven by the precision 6 MHz internal oscillator or an external crystal up to 25 MHz. The 50 MHz clock feeds the Cortex-M3 core, peripherals, and memory interfaces - delivering consistent real-time performance for motor control and industrial communication tasks within the LM3S2739-EQC50-A2T's specified industrial temperature range.
Does the LM3S2739-EQC50-A2T support CAN FD or only classical CAN 2.0B?
The LM3S2739-EQC50-A2T supports only CAN 2.0B (ISO 11898-1), not CAN FD. Its CAN module implements full 2.0B compliance with identifier masking, message object prioritization, and 32 configurable message objects. CAN FD features such as flexible data-rate, extended payload length, and CRC enhancements are absent - the LM3S2739-EQC50-A2T's CAN controller is strictly backward-compatible with legacy CAN networks, as confirmed in the SPMS054I datasheet Section 15.
What is the purpose of the hibernation module in the LM3S2739-EQC50-A2T?
The hibernation module in the LM3S2739-EQC50-A2T enables ultra-low-power operation (1.8 µA typical) while retaining RTC timekeeping and 2 KB of SRAM content using a backup battery. It supports wake-up events from RTC match, external pins, or tamper detection - eliminating the need for external RTC chips or supercapacitor hold-up circuits in battery-powered or energy-harvesting applications. This feature is fully integrated and documented in Section 6 of the LM3S2739-EQC50-A2T datasheet.
How many ADC channels does the LM3S2739-EQC50-A2T have, and what is their resolution?
The LM3S2739-EQC50-A2T includes a single 12-bit analog-to-digital converter with eight input channels (AIN0–AIN7), accessible via GPIO pins PE0–PE5 and PF0–PF1. It achieves up to 1 MSPS sampling rate and supports hardware averaging across up to 64 samples per conversion - improving effective resolution and reducing noise in precision sensing applications like motor current measurement or environmental monitoring within the LM3S2739-EQC50-A2T's design envelope.
Is the LM3S2739-EQC50-A2T pin-compatible with other Stellaris LM3S devices?
The LM3S2739-EQC50-A2T uses a 100-pin LQFP package shared with several other LM3S devices (e.g., LM3S8962, LM3S9B92), but pin compatibility is not guaranteed across the family. While package footprint and power/ground pin locations align, peripheral mappings - especially for CAN, SSI, and ADC - differ significantly between variants. Engineers must verify signal routing against the specific LM3S2739-EQC50-A2T pin diagram in Section 1.3 of the datasheet before assuming interchangeability.
LM3S2739-EQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- 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-A2T FAQ
1.How can I place an order for LM3S2739-EQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2739-EQC50-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 LM3S2739-EQC50-A2T reliable?
The price and inventory of LM3S2739-EQC50-A2T 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-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2739-EQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2739-EQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2739-EQC50-A2T?
LM3S2739-EQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2739-EQC50-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 LM3S2739-EQC50-A2T?
For technical support, including LM3S2739-EQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2739-EQC50-A2T requirements.
6.How does Aetrix verify that LM3S2739-EQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2739-EQC50-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 LM3S2739-EQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2739-EQC50-A2T?
All LM3S2739-EQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2739-EQC50-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 LM3S2739-EQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S2739-EQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM3S2739-EQC50-A2T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
