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Texas Instruments LM3S6753-IQC50-A2T
- Part No.:
- LM3S6753-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S6753-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,537
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Product details
Overview
LM3S6753-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated Ethernet MAC, dual UARTs, I²C, SSI, ADC (10-bit, 8-channel), and hibernation module. It operates at 50 MHz and supports industrial motor control and networked embedded systems.
For engineers reviewing the LM3S6753-IQC50-A2T datasheet, LM3S6753-IQC50-A2T pinout, LM3S6753-IQC50-A2T application, or LM3S6753-IQC50-A2T equivalent, key selection criteria include Ethernet MAC integration, hibernation power management, 50 MHz real-time performance, and industrial temperature range support.
Technical Context
The LM3S6753-IQC50-A2T implements the ARM Cortex-M3 core with NVIC, SysTick, MPU, and debug interfaces (JTAG/SWD). Its system-level architecture includes a dedicated hibernation module with RTC, battery-backed memory, and wake-up sources - enabling ultra-low-power operation without external circuitry.
Peripherals are clock-gated and configurable via the system control block; the integrated 10/100 Ethernet MAC supports MII interface and IEEE 802.3 compliance, while the ADC supports hardware averaging and differential sampling for sensor signal conditioning in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz - enables deterministic real-time response for motor control loops. |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface - sufficient for bootloader + application firmware with field-upgrade capability. |
| SRAM | 64 KB on-chip SRAM - supports real-time data buffering, stack/heap allocation, and Ethernet packet buffers. |
| ADC | 10-bit, 8-channel SAR ADC with hardware averaging and differential input mode - suitable for precision analog sensing in industrial I/O modules. |
| Ethernet Interface | Integrated 10/100 Mbps MAC with MII interface - eliminates need for external PHY controller in basic Ethernet node designs. |
| Hibernation Module | Dedicated low-power domain with RTC, battery-backed RAM (2 KB), and wake-on-RTC/external-pin - reduces standby current to 1.7 µA. |
| Operating Temp | –40°C to +105°C industrial grade - qualified for deployment in motor drives, PLCs, and outdoor gateways. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch) - compatible with standard surface-mount assembly and thermal management in dense PCB layouts. |
Pinout & Package
LM3S6753-IQC50-A2T is housed in a 100-pin LQFP package (JEDEC MS-026AC) with exposed thermal pad. Pin assignments follow TI's standardized Stellaris GPIO mapping and peripheral multiplexing scheme.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails enable noise isolation for ADC and CPU domains. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog and core ground pins minimize coupling between high-speed digital switching and sensitive analog circuits. |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | GPIO / Peripheral multiplexed pins | Configurable as UART0/1, SSI0/1, I²C0, PWM, timer capture, or general-purpose I/O - supports flexible board-level peripheral routing. |
| RMII_RXD0–RMII_TXEN | Ethernet MII/RMII interface | Direct connection to external PHY (e.g., DP83848) without glue logic - simplifies 10/100 Ethernet physical layer implementation. |
| HIB_RTCCLK, HIB_WAKE | Hibernation module signals | Enable autonomous wake-up from deep sleep using internal RTC or external interrupt - critical for battery-powered remote sensors. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Ethernet MAC | Reduces BOM count by eliminating external MAC IC; supports full-duplex 10/100 operation with DMA-accelerated packet handling. |
| Hibernation Module with RTC | Enables sub-2 µA sleep current with timekeeping and wake-on-event - extends battery life in wireless sensor nodes beyond 5 years. |
| Hardware ADC Averaging | Up to 64-sample hardware averaging per conversion - improves effective resolution to ~12 bits without CPU overhead. |
| Peripheral Multiplexing | Each GPIO pin supports ≥3 alternate functions (e.g., UART, SSI, I²C, PWM) - maximizes flexibility in constrained PCB layouts. |
| Memory Protection Unit (MPU) | Configurable region-based access control - isolates firmware tasks and prevents accidental corruption of critical code/data sections. |
Applications
| Industrial Motor Control | Networked Sensor Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors in HVAC compressors with real-time torque regulation and fault monitoring. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, managing PWM generation, reading current/voltage sensors, and communicating status over Ethernet. Use Value: 50 MHz Cortex-M3 execution speed ensures <10 µs loop timing; integrated ADC and hibernation support rapid startup and energy-efficient idle states. | Use Scenario: Aggregating data from multiple RS-485 Modbus sensors and forwarding to cloud via Ethernet. IC Role / Device Role / Timing Role: Protocol gateway bridging serial fieldbus to TCP/IP stack with local buffering and time-stamped logging. Use Value: On-chip Ethernet MAC handles packet framing and checksum offload; 64 KB SRAM accommodates dual protocol stacks and transient data bursts. |
| Programmable Logic Controller (PLC) I/O Module | Smart Building Controller |
Use Scenario: DIN-rail mounted I/O expansion unit with 8-channel analog input, 4-channel digital output, and EtherNet/IP connectivity. IC Role / Device Role / Timing Role: Real-time I/O processor with deterministic scan cycle, watchdog supervision, and secure firmware update over Ethernet. Use Value: Hardware watchdog and MPU enforce system reliability; hibernation mode allows safe power-loss recovery with retained state in battery-backed RAM. | Use Scenario: Wall-mounted HVAC controller integrating temperature/humidity sensing, relay actuation, and BACnet/IP communication. IC Role / Device Role / Timing Role: System-on-chip managing environmental sensing, user interface, scheduling logic, and building automation network interface. Use Value: Integrated ADC and GPIO drive capability eliminate external signal-conditioning ICs; industrial temp rating ensures stable operation inside electrical enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6965-IQC50-A2T | Same core and peripherals, but adds USB 2.0 OTG controller and increases SRAM to 96 KB; no hibernation module. | Better suited for host/device USB applications (e.g., HID devices, firmware updates), less optimal for ultra-low-power remote sensing. | Select LM3S6965-IQC50-A2T only when USB connectivity is required and hibernation is not needed. |
| TM4C123GH6PM | Successor family with same Cortex-M4F core, enhanced peripherals (USB, CAN), higher clock (80 MHz), and larger memory; requires PCB redesign due to different pinout and package (64-pin LQFP). | Supports more advanced features like floating-point math and CAN bus, but lacks direct drop-in compatibility and hibernation current specs matching LM3S6753. | Choose TM4C123GH6PM for new designs needing future-proofing, but avoid for LM3S6753 replacement without layout revision. |
Compared with LM3S6753-IQC50-A2T, LM3S6965-IQC50-A2T trades hibernation capability for USB functionality, while TM4C123GH6PM offers higher performance and modern peripherals at the cost of pin compatibility and legacy design continuity.
Availability
LM3S6753-IQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, networked sensor gateways, programmable logic controller (PLC) I/O modules, and smart building controllers requiring stable component supply across long-lifecycle deployments.
Supply support for LM3S6753-IQC50-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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and connectivity technologies for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as a high-integration, low-cost ARM-based MCU platform targeting industrial automation, motor control, and networked embedded systems before the transition to the TM4C family.
FAQ
What is the maximum operating frequency of the LM3S6753-IQC50-A2T?
The LM3S6753-IQC50-A2T operates at a maximum system clock frequency of 50 MHz, as specified in its production data sheet. This frequency is achieved using an internal PLL that multiplies the input crystal or oscillator signal. The 50 MHz rating applies across the full industrial temperature range (–40°C to +105°C) and is validated under worst-case voltage and process corners. LM3S6753-IQC50-A2T maintains deterministic interrupt latency and instruction throughput at this speed, making it suitable for real-time control tasks such as motor commutation and Ethernet packet processing.
Does the LM3S6753-IQC50-A2T include an integrated Ethernet PHY?
No, the LM3S6753-IQC50-A2T integrates only the Ethernet MAC layer, not the physical layer (PHY). It provides an MII or RMII interface to connect to external PHY chips such as the DP83848 or LAN8720. This separation allows designers to select PHYs optimized for specific requirements like ESD robustness, power consumption, or transformerless operation. LM3S6753-IQC50-A2T handles frame assembly, CRC calculation, and DMA transfers, reducing host CPU load during network communication.
What is the purpose of the hibernation module in the LM3S6753-IQC50-A2T?
The hibernation module in the LM3S6753-IQC50-A2T provides a dedicated low-power domain that retains real-time clock (RTC) operation, 2 KB of battery-backed RAM, and wake-up capability while the main system is powered down. It achieves standby current as low as 1.7 µA, enabling extended battery life in remote monitoring applications. LM3S6753-IQC50-A2T uses this module to maintain timekeeping and critical state information without external components - a key differentiator versus general-purpose MCUs lacking integrated hibernation logic.
Can the LM3S6753-IQC50-A2T be used as a direct replacement for the LM3S6965-IQC50-A2T?
No, the LM3S6753-IQC50-A2T cannot serve as a direct replacement for the LM3S6965-IQC50-A2T because it lacks the USB 2.0 OTG controller present in the latter, and the LM3S6965 does not include the hibernation module found in the LM3S6753-IQC50-A2T. While both share identical package, pinout, and core peripherals, their feature sets are complementary rather than overlapping. LM3S6753-IQC50-A2T is optimized for low-power networked sensing, whereas LM3S6965-IQC50-A2T targets USB-connected devices.
What development tools support the LM3S6753-IQC50-A2T?
The LM3S6753-IQC50-A2T is supported by Texas Instruments' StellarisWare Peripheral Driver Library, Code Composer Studio v5.x, and IAR Embedded Workbench for ARM. Evaluation is enabled via the original Stellaris DK-LM3S9B96 development kit, which includes JTAG debugging, Ethernet connectivity, and expansion headers. LM3S6753-IQC50-A2T firmware can be programmed using in-circuit debug interfaces (SWD/JTAG) and updated in-field via UART or Ethernet bootloaders provided in the StellarisWare suite.
LM3S6753-IQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 6000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- Ethernet, I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 41
- 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:
LM3S6753-IQC50-A2T FAQ
1.How can I place an order for LM3S6753-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S6753-IQC50-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 LM3S6753-IQC50-A2T reliable?
The price and inventory of LM3S6753-IQC50-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S6753-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S6753-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S6753-IQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S6753-IQC50-A2T?
LM3S6753-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S6753-IQC50-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 LM3S6753-IQC50-A2T?
For technical support, including LM3S6753-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S6753-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S6753-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S6753-IQC50-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 LM3S6753-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S6753-IQC50-A2T?
All LM3S6753-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S6753-IQC50-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 LM3S6753-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S6753-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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