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Texas Instruments LM3S800-IQN50-C2
- Part No.:
- LM3S800-IQN50-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S800-IQN50-C2.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,200
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Product details
Overview
LM3S800-IQN50-C2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 64 KB flash, 24 KB SRAM, and integrated peripherals including UART, I²C, SSI, GPIO, timers, and analog comparators. It operates at up to 50 MHz, supports 3.3 V operation, and targets embedded control in industrial automation, motor control, and sensor interface applications.
For engineers reviewing the LM3S800-IQN50-C2 datasheet, LM3S800-IQN50-C2 pinout, LM3S800-IQN50-C2 application, or LM3S800-IQN50-C2 equivalent, key selection criteria include its 50 MHz CPU clock, 64 KB on-chip flash with write protection, 24 KB SRAM, 48-pin LQFP package, and support for JTAG/SWD debug interfaces.
Technical Context
The LM3S800-IQN50-C2 implements the ARM Cortex-M3 processor core with Thumb-2 instruction set, NVIC interrupt controller, SysTick timer, and MPU. It integrates a system-level clock tree with PLL-based 50 MHz operation, internal voltage regulation, and configurable reset sources including power-on reset and external reset pin.
Peripherals include two UARTs, one I²C master/slave interface, one SSI port, eight general-purpose timers (including RTC-capable), four analog comparators, and up to 41 GPIO pins with programmable drive strength and slew rate. All peripherals are memory-mapped and accessible via APB bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set, 50 MHz max operation |
| Flash Memory | 64 KB on-chip flash with sector erase, write protection bits, and 100K-cycle endurance |
| SRAM | 24 KB on-chip SRAM, zero-wait-state access at 50 MHz |
| Operating Voltage | 3.0 V to 3.6 V supply; internal LDO regulates core voltage to 1.2 V |
| Package | 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant |
| Temperature Range | –40°C to +85°C industrial grade (C2 suffix) |
| Debug Interface | JTAG and SWD support via dedicated TMS/TCK/TDI/TDO/SWDIO/SWCLK pins |
Pinout & Package
The LM3S800-IQN50-C2 is housed in a 48-pin LQFP package with exposed thermal pad. Pin functions are multiplexed across GPIO and peripheral signals, with dedicated JTAG/SWD debug pins and power/ground distribution optimized for noise immunity and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | VDD = I/O supply (3.3 V); VDDA = analog supply; VDDC = core supply (regulated internally) |
| GND, GNDA, GNDC | Ground returns | Separate analog/digital/core ground planes reduce coupling noise in mixed-signal operation |
| PD0–PD7, PE0–PE5, PF0–PF4 | GPIO ports | 41 total GPIO pins; each supports digital input/output, interrupt, and alternate peripheral functions |
| PA0–PA7, PB0–PB7 | Peripheral signal multiplexing | UART0/1, I²C0, SSI0, Timer0–3, Comparator0–3 mapped to these pins per configuration register |
| TCK, TMS, TDI, TDO, nTRST | JTAG debug interface | Full IEEE 1149.1-compliant boundary scan and debug access; SWD mode uses TCK/SWDIO only |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Flash Programming | On-chip serial flash loader enables firmware updates via UART or SSI without external programmer |
| Configurable Power Modes | Three sleep modes (sleep/deep-sleep/power-down) with wake-up on GPIO, timer, or peripheral interrupt |
| Hardware Timers | Eight 16/32-bit general-purpose timers with PWM, input capture, and RTC capability-no external timing IC required |
| Analog Comparators | Four independent comparators with internal reference selection (1.65 V or 2.5 V) and interrupt generation |
| Memory Protection Unit (MPU) | 8-region MPU enforces privilege-level access control for secure firmware partitioning and RTOS compatibility |
Applications
| Industrial Motor Control | Sensor Data Acquisition |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC motors in factory automation systems. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms using PWM outputs, ADC sampling (via external ADC interface), and encoder feedback processing. Use Value: On-chip timers with quadrature encoder interface support and deterministic interrupt latency enable sub-10 µs control loop timing. | Use Scenario: Multi-channel environmental monitoring in building management systems with temperature, humidity, and CO₂ sensors. IC Role / Device Role / Timing Role: Sensor interface hub aggregating I²C and UART sensor data, performing local preprocessing, and transmitting via RS-485. Use Value: Dual UARTs and I²C master/slave allow concurrent communication with up to 8 sensors while maintaining local timekeeping via RTC-mode timer. |
| Programmable Logic Controller (PLC) I/O Module | Embedded HMI Controller |
Use Scenario: DIN-rail mounted remote I/O module handling discrete inputs/outputs and analog current loops (4–20 mA). IC Role / Device Role / Timing Role: Deterministic GPIO scanning engine with configurable debounce, watchdog supervision, and isolated communication interface. Use Value: 41 GPIO pins with programmable slew rate and 24 mA drive strength directly interface to optocouplers and relay drivers without external buffers. | Use Scenario: Touch-enabled front-panel controller for medical devices requiring responsive UI and safety-critical status reporting. IC Role / Device Role / Timing Role: Application processor managing display refresh, touch polling, button debouncing, and fault logging to nonvolatile flash. Use Value: 24 KB SRAM enables double-buffered graphics rendering; 64 KB flash stores firmware plus persistent configuration and event logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S101-IQN50-C2 | Same Cortex-M3 core, 8 KB flash, 4 KB SRAM, identical 48-pin LQFP package and pinout | Limited to simpler control tasks due to reduced memory; no SSI or second UART | Select when cost-sensitive designs require basic real-time control without communication expansion |
| TM4C123GH6PM | Successor family: 80 MHz Cortex-M4F, 256 KB flash, 32 KB SRAM, FPU, enhanced peripherals | Supports floating-point math, USB, CAN, and higher-speed communications not available in LM3S800 | Choose for new designs needing higher performance, future-proofing, or advanced connectivity |
Compared with LM3S101-IQN50-C2, the LM3S800-IQN50-C2 provides 8× more flash and full peripheral complement for complex firmware; versus TM4C123GH6PM, it offers proven industrial qualification and lower BOM cost where FPU or USB are unnecessary.
Availability
LM3S800-IQN50-C2 is available at Aetrix Electronics and suitable for industrial motor control, sensor data acquisition, PLC I/O modules, and embedded HMI controllers requiring stable component supply and long-term lifecycle support.
Supply support for LM3S800-IQN50-C2 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 and automotive-grade microcontrollers.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded control applications demanding high integration, low power, and robust debug capabilities-targeting industrial automation, building control, and appliance markets.
FAQ
What is the maximum operating frequency of the LM3S800-IQN50-C2?
The LM3S800-IQN50-C2 operates at a maximum CPU clock frequency of 50 MHz, achieved using an internal PLL that multiplies the crystal or external clock source. This frequency is guaranteed across the full industrial temperature range (–40°C to +85°C) and 3.0–3.6 V supply, enabling deterministic real-time response for control loops and communication stacks. The LM3S800-IQN50-C2 maintains zero-wait-state SRAM access and single-cycle flash execution at this speed.
Does the LM3S800-IQN50-C2 support in-system programming (ISP)?
Yes, the LM3S800-IQN50-C2 supports in-system programming via its built-in Serial Flash Loader (SFL), which accepts firmware images over UART or SSI interfaces. This eliminates the need for external JTAG programmers during field updates. The LM3S800-IQN50-C2's flash memory includes sector-level erase and write-protection bits, allowing secure and reliable reprogramming while preserving critical bootloader or calibration data.
What debug interfaces does the LM3S800-IQN50-C2 provide?
The LM3S800-IQN50-C2 provides IEEE 1149.1-compliant JTAG and Serial Wire Debug (SWD) interfaces. Dedicated pins (TCK, TMS, TDI, TDO, nTRST) support full boundary scan and real-time debugging, while SWD mode uses only SWDIO and SWCLK for reduced pin count. Both interfaces enable breakpoints, watchpoints, register inspection, and flash programming - essential for development and validation of the LM3S800-IQN50-C2 in safety-critical applications.
How many GPIO pins does the LM3S800-IQN50-C2 have, and what are their capabilities?
The LM3S800-IQN50-C2 provides 41 individually configurable GPIO pins distributed across Ports D, E, and F. Each pin supports digital input/output, interrupt-on-change, and up to three alternate peripheral functions (e.g., UART, I²C, timer capture). Drive strength is software-selectable (2 mA or 24 mA), and slew rate is configurable to reduce EMI. These capabilities make the LM3S800-IQN50-C2 suitable for direct interfacing with sensors, actuators, and industrial I/O without external level shifters or buffers.
Is the LM3S800-IQN50-C2 pin-compatible with other Stellaris LM3S devices?
The LM3S800-IQN50-C2 shares the same 48-pin LQFP package and pinout with several other LM3S devices, including the LM3S101-IQN50-C2 and LM3S3748-IQN50-C2. However, peripheral availability differs: the LM3S800-IQN50-C2 includes all UARTs, I²C, SSI, and timers present in the pinout, whereas lower-memory variants may disable certain functions in silicon. Always verify peripheral enablement and register mapping in the specific device's datasheet before assuming drop-in replacement.
LM3S800-IQN50-C2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 800
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S800-IQN50-C2 FAQ
1.How can I place an order for LM3S800-IQN50-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S800-IQN50-C2 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 LM3S800-IQN50-C2 reliable?
The price and inventory of LM3S800-IQN50-C2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S800-IQN50-C2 is usually 5 days.
3.What payment methods are accepted for LM3S800-IQN50-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S800-IQN50-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S800-IQN50-C2?
LM3S800-IQN50-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S800-IQN50-C2 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 LM3S800-IQN50-C2?
For technical support, including LM3S800-IQN50-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S800-IQN50-C2 requirements.
6.How does Aetrix verify that LM3S800-IQN50-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S800-IQN50-C2 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 LM3S800-IQN50-C2 meets industry standards.
7.What is the process for return or replacement of LM3S800-IQN50-C2?
All LM3S800-IQN50-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S800-IQN50-C2, 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 LM3S800-IQN50-C2 part is unused and in its original packaging.
Return procedure for LM3S800-IQN50-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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