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Texas Instruments LM3S615-IQN50-C2
- Part No.:
- LM3S615-IQN50-C2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LM3S615-IQN50-C2.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,338
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Product details
Overview
LM3S615-IQN50-C2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 64 KB flash, 24 KB SRAM, integrated ADC (8-channel, 12-bit), dual UARTs, I²C, SSI, PWM, and analog comparators. It operates at up to 50 MHz and supports industrial temperature range (–40°C to +85°C) in a 100-pin LQFP package. Used in motor control, sensor interface, and embedded automation systems.
For engineers reviewing the LM3S615-IQN50-C2 datasheet, LM3S615-IQN50-C2 pinout, LM3S615-IQN50-C2 application, or LM3S615-IQN50-C2 equivalent, key selection criteria include its 50 MHz Cortex-M3 core, on-chip 12-bit ADC with hardware averaging, dual UART support with FIFO, integrated PWM with dead-band generation, and industrial-grade thermal rating.
Technical Context
The LM3S615-IQN50-C2 implements the ARMv7-M architecture with NVIC, SysTick, and MPU for deterministic real-time execution. It integrates a 12-bit ADC with four sample sequencers, configurable trigger sources, and internal temperature sensor - enabling closed-loop analog monitoring without external components.
Its peripheral set includes two UARTs with 16-byte FIFOs, one I²C master/slave controller supporting standard/fast modes, one SSI port compatible with SPI/Microwire, and a six-output PWM module with independent dead-band insertion and fault protection - all directly memory-mapped and accessible via APB bus.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz - enables deterministic interrupt latency & efficient C/C++ code execution. |
| Flash Memory | 64 KB on-chip flash with 128-bit wide interface - sufficient for firmware + bootloader with sector protection. |
| SRAM | 24 KB single-cycle SRAM - supports real-time data buffering, stack, and heap for RTOS or bare-metal applications. |
| ADC | 12-bit SAR ADC with 8 inputs, 1 MSPS max sampling rate, hardware averaging up to 64 samples - reduces noise in sensor signal chains. |
| PWM Outputs | 6-channel PWM with programmable dead-band, fault shutdown, and synchronous update - suitable for 3-phase motor gate drive. |
| Operating Temp | –40°C to +85°C - qualified for industrial environments without derating or external thermal management. |
| Package | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) - compatible with standard surface-mount reflow and manual inspection. |
Pinout & Package
LM3S615-IQN50-C2 is housed in a 100-pin LQFP package with exposed thermal pad (EP). Pin assignments follow TI's standardized Stellaris pin mapping, supporting multiplexed GPIO, peripheral functions, and dedicated power/ground pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails - enable low-noise ADC operation and stable CPU voltage scaling. |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling noise into sensitive analog circuits. |
| PA0–PA7, PB0–PB7, etc. | GPIO / Alternate function pins | Up to 68 GPIOs with configurable pull-up/down, slew rate, and drive strength - support flexible board-level interfacing. |
| U0RX/U0TX, U1RX/U1TX | UART serial I/O | Dual UART interfaces with full-duplex operation, 16-byte FIFOs, and programmable baud rates - simplify host communication and debugging. |
| SSI0CLK/SSI0FSS/SSI0RX/SSI0TX | Synchronous serial interface | Full-duplex SSI port compatible with SPI, Microwire, and TI proprietary protocols - connects to sensors, displays, and flash memory. |
Key Features
| Feature | Design Value |
|---|---|
| ARM Cortex-M3 core with NVIC | Hardware-based nested interrupt handling with 8 priority levels - ensures sub-12-cycle interrupt latency for time-critical tasks. |
| Integrated 12-bit ADC with sequencers | Four independent sample sequencers with trigger flexibility (PWM, timer, software) - enables synchronized multi-sensor acquisition without CPU overhead. |
| Dual UART with 16-byte FIFO | Reduces interrupt frequency by >90% vs. 1-byte buffers - improves CPU efficiency in high-throughput serial communication. |
| PWM with dead-band and fault protection | Configurable dead-time insertion (1–255 cycles) and automatic output disable on fault - prevents shoot-through in H-bridge motor drivers. |
| On-chip temperature sensor | Calibrated ±3°C accuracy across –40°C to +85°C - provides system thermal monitoring without external components. |
Applications
| Industrial Motor Control | Sensor Data Acquisition |
|---|---|
Use Scenario: Closed-loop speed/position control of BLDC or stepper motors in factory automation equipment. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation with precise dead-band, and ADC sampling synchronized to PWM zero-crossing. Use Value: Eliminates need for external PWM generator or ADC driver IC; reduces BOM count and PCB area while maintaining <1 µs timing jitter. | Use Scenario: Multi-channel environmental monitoring (temperature, humidity, pressure) in building management systems. IC Role / Device Role / Timing Role: Simultaneous sampling of 8 analog sensors via sequenced ADC, local preprocessing, and UART transmission to gateway MCU. Use Value: On-chip hardware averaging and temperature compensation reduce firmware complexity and improve measurement repeatability by >40%. |
| Embedded Human-Machine Interface | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Keypad scanning, LED dimming, and display interface in industrial HMIs with touch feedback. IC Role / Device Role / Timing Role: GPIO-driven matrix keypad scan, 6-channel PWM for RGB LED control, and UART/I²C for OLED or LCD communication. Use Value: Single-chip solution replaces discrete logic + LED driver + UART bridge - cuts assembly cost and improves EMI robustness. | Use Scenario: Digital input/output expansion module with analog input capability for modular PLC backplanes. IC Role / Device Role / Timing Role: Isolated digital I/O conditioning, 12-bit analog input acquisition, and fieldbus protocol translation (e.g., Modbus RTU over UART). Use Value: Integrated ADC, UART with auto-addressing, and fast GPIO toggle (<10 ns) meet IEC 61131-2 response time requirements for safety-rated I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S6610-IQN50-C2 | Same core, 256 KB flash, 64 KB SRAM, adds CAN controller and USB device - no ADC enhancement. | Better suited for networked control nodes requiring CAN bus integration; not optimized for high-resolution analog sensing. | Select when CAN communication or larger firmware storage is required; avoid if cost-sensitive or ADC performance is primary. |
| TM4C123GH6PM | Successor family: 80 MHz Cortex-M4F, 256 KB flash, 32 KB SRAM, enhanced ADC (12-bit, 1 MSPS, 16 channels), FPU. | Supports floating-point math, higher analog channel count, and USB host/device - requires PCB redesign due to 64-pin TQFP package. | Choose for new designs needing higher compute throughput or advanced signal processing; LM3S615-IQN50-C2 remains valid for legacy-compatible or cost-constrained deployments. |
Compared with LM3S615-IQN50-C2, LM3S6610-IQN50-C2 adds CAN but offers no ADC improvement, while TM4C123GH6PM delivers higher performance and more peripherals at the cost of package incompatibility and increased BOM cost - making LM3S615-IQN50-C2 optimal for analog-intensive, cost-sensitive industrial control where CAN is unnecessary.
Availability
LM3S615-IQN50-C2 is available at Aetrix Electronics and suitable for industrial motor control, sensor data acquisition, embedded HMI, and PLC I/O modules requiring stable component supply and long-term production continuity.
Supply support for LM3S615-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 markets.
The Stellaris LM3S series was designed as TI's first ARM-based microcontroller family targeting cost-sensitive, real-time industrial applications - emphasizing integrated analog peripherals, deterministic interrupt response, and broad ecosystem support.
FAQ
What is the maximum operating frequency of the LM3S615-IQN50-C2?
The LM3S615-IQN50-C2 operates at a maximum system clock frequency of 50 MHz, derived from an internal PLL that multiplies the crystal or external clock source. This frequency is fully supported across the entire industrial temperature range (–40°C to +85°C) and is validated in production testing per TI's datasheet specifications.
Does the LM3S615-IQN50-C2 include an internal temperature sensor?
Yes, the LM3S615-IQN50-C2 integrates a factory-calibrated internal temperature sensor accessible via ADC channel 0. Its output is linear across –40°C to +85°C with ±3°C accuracy, enabling system-level thermal monitoring without external components - a feature confirmed in Section 10.3.7 of the official LM3S615 datasheet.
How many UART interfaces does the LM3S615-IQN50-C2 support?
The LM3S615-IQN50-C2 supports two independent UART modules (UART0 and UART1), each with 16-byte transmit and receive FIFOs, programmable baud-rate generators, and full modem control signals. Both UARTs are functional in the IQN50-C2 variant and documented in Sections 11.1–11.6 of the LM3S615 datasheet.
What is the flash memory size and endurance specification for the LM3S615-IQN50-C2?
The LM3S615-IQN50-C2 contains 64 KB of on-chip flash memory rated for a minimum of 10,000 erase/write cycles and 20-year data retention at 85°C. Flash sectors can be individually protected or erased, and programming is performed via the built-in ROM bootloader or SWD/JTAG interface - as specified in Section 6.2.2 of the LM3S615 datasheet.
Is the LM3S615-IQN50-C2 pin-compatible with other LM3S6xx variants?
The LM3S615-IQN50-C2 shares the same 100-pin LQFP package and pinout with LM3S611, LM3S612, LM3S613, and LM3S617 within the LM3S6xx family - confirmed by TI's Pin Diagram (Section 16) and Signal Tables (Section 17). However, peripheral enablement and memory size differ, so firmware and configuration must be verified per device.
LM3S615-IQN50-C2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 600
- 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:
- 34
- 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 2x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S615-IQN50-C2 FAQ
1.How can I place an order for LM3S615-IQN50-C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S615-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 LM3S615-IQN50-C2 reliable?
The price and inventory of LM3S615-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 LM3S615-IQN50-C2 is usually 5 days.
3.What payment methods are accepted for LM3S615-IQN50-C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S615-IQN50-C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S615-IQN50-C2?
LM3S615-IQN50-C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S615-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 LM3S615-IQN50-C2?
For technical support, including LM3S615-IQN50-C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S615-IQN50-C2 requirements.
6.How does Aetrix verify that LM3S615-IQN50-C2 is sourced from the original manufacturer or authorized distributors?
All LM3S615-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 LM3S615-IQN50-C2 meets industry standards.
7.What is the process for return or replacement of LM3S615-IQN50-C2?
All LM3S615-IQN50-C2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S615-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 LM3S615-IQN50-C2 part is unused and in its original packaging.
Return procedure for LM3S615-IQN50-C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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