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Texas Instruments LM3S608-IQN50-C2T
- Part No.:
- LM3S608-IQN50-C2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S608-IQN50-C2T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,136
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Product details
Overview
LM3S608-IQN50-C2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 64 KB flash, 24 KB SRAM, integrated ADC (10-bit, 8-channel), UART, I²C, SSI, and PWM peripherals, operating at up to 50 MHz - used in motor control, industrial sensing, and embedded HMI systems.
For engineers reviewing the LM3S608-IQN50-C2T datasheet, LM3S608-IQN50-C2T pinout, LM3S608-IQN50-C2T application, or LM3S608-IQN50-C2T equivalent, key selection criteria include its 50 MHz CPU clock, 10-bit ADC sampling rate (up to 1 MSPS), GPIO interrupt capability per pin, on-chip LDO regulator, and QFP-100 package compatibility with legacy Stellaris designs.
Technical Context
The LM3S608-IQN50-C2T implements the ARMv7-M architecture with NVIC supporting 48 configurable interrupts, SysTick timer, and MPU for memory protection. It integrates a single 10-bit ADC with hardware averaging and four general-purpose timers - two 32-bit and two 16-bit - each supporting one-shot, periodic, PWM, and input capture modes.
Its peripheral set includes three UARTs (one with IrDA support), two SSI modules (SPI-compatible), one I²C master/slave interface, and an analog comparator with internal reference. Clock management supports PLL-based system clock derivation from internal oscillator or external crystal (1–25 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, executes Thumb-2 instructions with deterministic interrupt latency |
| Max Operating Frequency | 50 MHz - enables real-time motor control loop execution within 20 µs cycle time |
| Flash Memory | 64 KB - sufficient for bootloader + application firmware with field-upgrade capability |
| SRAM | 24 KB - supports multiple task stacks and sensor data buffering without external RAM |
| ADC Resolution & Channels | 10-bit, 8-channel - provides adequate dynamic range for temperature, voltage, and current monitoring |
| GPIO Pins | 80 configurable I/O - includes slew-rate control, weak pull-up/down, and edge-triggered interrupts |
| Operating Voltage | 3.3 V ±10% - compatible with standard logic-level interfaces and low-noise analog supply domains |
Pinout & Package
LM3S608-IQN50-C2T is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin assignments follow TI's standardized Stellaris pinout layout for QFP-100 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power Supply Inputs | Digital core (VDD), analog (VDDA), and clock domain (VDDC) supplies require separate 3.3 V filtering |
| GND, GNDA, GNDC | Ground Returns | Analog ground (GNDA) must be isolated from digital return paths to preserve ADC SNR |
| PF0–PF7, PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE7, PF0–PF7 | General-Purpose I/O | Each port supports alternate functions including UART, SSI, I²C, and timer outputs |
| USB0VBUS, USB0ID, USB0P, USB0N | USB 2.0 Full-Speed Interface | Integrated PHY requires external 1.5 kΩ pull-up on USB0D+ for device enumeration |
| ADC0CH0–ADC0CH7 | Analog Input Channels | Share pins with GPIO; dedicated sample-and-hold allows simultaneous multi-channel acquisition |
Key Features
| Feature | Design Value |
|---|---|
| On-chip LDO regulator | Generates internal 1.2 V core voltage from 3.3 V supply - eliminates need for external DC/DC converter |
| Hardware ADC averaging | Configurable 2x–64x oversampling reduces noise without CPU overhead - improves effective resolution to ~12 bits |
| Nested Vectored Interrupt Controller (NVIC) | Supports 48 interrupt sources with 8 priority levels - enables deterministic response to motor fault events |
| GPIO interrupt per pin | Any GPIO can trigger edge-sensitive interrupt - simplifies wake-from-sleep and button debounce logic |
| Integrated USB 2.0 FS PHY | Full-speed USB device interface with internal transceiver - enables direct PC connectivity without external PHY chip |
Applications
| Industrial Motor Control | Embedded HMI Panel |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, ADC sampling of phase currents, and generation of synchronized 3-phase PWM signals. Use Value: 50 MHz Cortex-M3 core and dedicated PWM timers enable sub-5 µs control loop timing critical for torque ripple reduction. | Use Scenario: Touch-enabled operator interface with local display, pushbutton inputs, and serial communication to PLC. IC Role / Device Role / Timing Role: Host controller managing resistive touch overlay, driving segment LCD via GPIO, and handling UART/I²C backhaul. Use Value: 80 GPIOs with programmable slew rate and 10-bit ADC allow direct integration of touch sensing and analog front-end without external components. |
| Environmental Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Battery-powered remote node measuring temperature, humidity, and ambient light with wireless uplink. IC Role / Device Role / Timing Role: Low-power sensor aggregator with sleep/wake scheduling, ADC conversion sequencing, and UART-to-RF bridge logic. Use Value: Integrated LDO and multiple sleep modes (deep-sleep current < 10 µA) extend battery life beyond 5 years in duty-cycled operation. | Use Scenario: DIN-rail mounted module converting 24 V DC field inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol handler executing Modbus slave stack, isolating digital I/O, and managing watchdog-timed safety shutdown. Use Value: Hardware CRC generator and dual UARTs with automatic half-duplex direction control simplify robust industrial communications implementation. |
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 80 MHz Cortex-M4F core, 256 KB flash, FPU, and enhanced peripheral set; same QFP-100 footprint | Supports floating-point math-intensive tasks (e.g., FFT-based vibration analysis); adds CAN and Ethernet MAC | Recommended for new designs requiring higher performance or extended feature set; migration path documented by TI |
| LM4F120H5QR | Pin-compatible upgrade with 80 MHz Cortex-M4F, 256 KB flash, and identical peripheral register map; superseded LM3S608 in TI's product roadmap | Enables seamless firmware porting while adding DSP instructions and hardware divider | Preferred for drop-in replacement where higher clock speed and FPU are needed without PCB revision |
Compared with LM3S608-IQN50-C2T, TM4C123GH6PM offers 60% higher CPU throughput and integrated FPU for signal processing, while LM4F120H5QR delivers identical pinout and register compatibility with doubled clock speed - both provide measurable design scalability without architectural rework.
Availability
LM3S608-IQN50-C2T is available at Aetrix Electronics and suitable for industrial motor control, embedded HMI, and environmental sensor node applications requiring stable component supply and long-term lifecycle support.
Supply support for LM3S608-IQN50-C2T 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 microcontrollers.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time embedded applications requiring integrated analog peripherals, deterministic interrupt response, and compact code footprint - targeting industrial automation and intelligent sensor nodes.
FAQ
What is the maximum operating temperature range for the LM3S608-IQN50-C2T?
The LM3S608-IQN50-C2T is rated for industrial temperature operation from –40°C to +85°C. This range is validated across all electrical specifications in the datasheet, including flash programming endurance and ADC linearity. The device uses thermal monitoring circuitry to throttle CPU frequency if junction temperature exceeds safe limits, ensuring reliable operation in enclosed enclosures or high-ambient environments. LM3S608-IQN50-C2T maintains full functionality throughout this range without derating.
Does the LM3S608-IQN50-C2T support in-system programming via UART or USB?
Yes, the LM3S608-IQN50-C2T supports in-system programming (ISP) through its built-in ROM bootloader, accessible via UART0 or USB device interface. The bootloader activates on power-up when the BOOT pin is held low, enabling firmware updates without JTAG hardware. LM3S608-IQN50-C2T's bootloader validates checksums and supports encrypted image loading when configured with secure boot options. This capability is factory-programmed and cannot be erased.
How many independent PWM outputs does the LM3S608-IQN50-C2T provide?
The LM3S608-IQN50-C2T provides up to 16 independent PWM outputs using its four general-purpose timers: two 32-bit timers (each configurable as two 16-bit PWM generators) and two 16-bit timers (each providing one PWM output). All PWM channels support programmable frequency, duty cycle, and dead-band insertion - essential for three-phase motor drive implementations. LM3S608-IQN50-C2T's PWM hardware operates independently of CPU intervention once configured.
Is the internal ADC of the LM3S608-IQN50-C2T capable of differential input measurements?
Yes, the LM3S608-IQN50-C2T's 10-bit ADC supports true differential input mode on selected channel pairs (e.g., CH0/CH1, CH2/CH3), providing 12-bit effective resolution through hardware averaging. Differential sampling rejects common-mode noise from industrial sensors and thermocouples. LM3S608-IQN50-C2T's ADC sequencer allows automatic scanning across differential pairs without software intervention, reducing CPU load during continuous acquisition.
What debug interface options are available for the LM3S608-IQN50-C2T?
The LM3S608-IQN50-C2T supports JTAG and SWD (Serial Wire Debug) interfaces for full-featured debugging, including breakpoints, watchpoints, and real-time register inspection. Its Cortex-M3 core includes an Embedded Trace Macrocell (ETM) and Instrumentation Trace Macrocell (ITM) for instruction and data trace. LM3S608-IQN50-C2T also supports SWO (Single Wire Output) for printf-style debug logging without halting execution.
LM3S608-IQN50-C2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 600
- Packaging:
- Tape & Reel (TR)
- 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:
- 28
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S608-IQN50-C2T FAQ
1.How can I place an order for LM3S608-IQN50-C2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S608-IQN50-C2T 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 LM3S608-IQN50-C2T reliable?
The price and inventory of LM3S608-IQN50-C2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S608-IQN50-C2T is usually 5 days.
3.What payment methods are accepted for LM3S608-IQN50-C2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S608-IQN50-C2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S608-IQN50-C2T?
LM3S608-IQN50-C2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S608-IQN50-C2T 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 LM3S608-IQN50-C2T?
For technical support, including LM3S608-IQN50-C2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S608-IQN50-C2T requirements.
6.How does Aetrix verify that LM3S608-IQN50-C2T is sourced from the original manufacturer or authorized distributors?
All LM3S608-IQN50-C2T 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 LM3S608-IQN50-C2T meets industry standards.
7.What is the process for return or replacement of LM3S608-IQN50-C2T?
All LM3S608-IQN50-C2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S608-IQN50-C2T, 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 LM3S608-IQN50-C2T part is unused and in its original packaging.
Return procedure for LM3S608-IQN50-C2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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