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Texas Instruments LM3S2608-IQC50-A2
- Part No.:
- LM3S2608-IQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2608-IQC50-A2.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,733
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Product details
Overview
LM3S2608-IQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN, USB, UART, I²C, SSI, ADC (10-bit, 8-channel), and hibernation module. It operates at 50 MHz and supports industrial temperature range (–40°C to +85°C) in a 100-pin LQFP package. It targets embedded control in motor drives and industrial automation.
For engineers reviewing the LM3S2608-IQC50-A2 datasheet, LM3S2608-IQC50-A2 pinout, LM3S2608-IQC50-A2 application, or LM3S2608-IQC50-A2 equivalent, key selection criteria include its integrated CAN 2.0A/B controller, hibernation mode with RTC and battery-backed memory, 50 MHz real-time performance, and qualification for industrial environments without external timing or power management ICs.
Technical Context
The LM3S2608-IQC50-A2 implements the ARMv7-M architecture with NVIC, SysTick, MPU, and debug support via JTAG/SWD. Its system-level integration includes a hibernation module with dedicated 256-byte battery-backed RAM, RTC, and wake-up sources including GPIO and RTC match events.
Peripherals are clock-gated and configurable via the system control block; the CAN module supports bit rates up to 1 Mbps with 32 message objects, while the ADC features hardware averaging and internal temperature sensor sampling - all operating under the same 50 MHz system clock derived from an internal precision oscillator or external crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs Thumb-2 instructions at up to 50 MHz |
| Flash Memory | 256 KB on-chip, supports in-application programming and nonvolatile register storage |
| SRAM | 64 KB on-chip, zero-wait-state access at full CPU speed |
| Operating Temp | –40°C to +85°C, qualified for industrial environments without derating |
| Package | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant |
| CAN Interface | One CAN 2.0A/B controller with 32 message objects and programmable bit timing |
| Hibernate Module | Dedicated low-power domain with RTC, battery-backed 256-byte RAM, and GPIO/RTC wake-up |
Pinout & Package
LM3S2608-IQC50-A2 is housed in a 100-pin LQFP package (Pb-free, RoHS-compliant) with standard thermal pad and 0.5 mm lead pitch. Pin functions are multiplexed across GPIO banks A–G, with dedicated pins for CAN, USB, UART, I²C, SSI, ADC, and hibernate control signals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDUSB | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and USB PHY (VDDUSB); require local decoupling |
| GND, GNDA, GNDUSB | Ground returns | Independent ground planes per domain to minimize noise coupling into ADC/USB |
| PA0–PA7, PB0–PB7, etc. | GPIO bank terminals | Configurable as digital I/O, peripheral alternate functions (e.g., UART0TX, SSI0CLK), or analog inputs (ADC0) |
| CAN0RX / CAN0TX | CAN physical interface | Dedicated differential pair for CAN transceiver connection; supports 1 Mbps operation |
| USB0VBUS, USB0ID, USB0DP, USB0DM | USB 2.0 Full-Speed interface | Integrated PHY supports device-mode operation; VBUS sensing and ID detection enabled |
| HIBERNATE_RTCCLK, HIBERNATE_WAKE | Hibernate module control | Accepts external 32.768 kHz crystal for RTC; enables wake-from-hibernate via edge or timer event |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0A/B controller | Eliminates need for external CAN transceiver driver logic and reduces BOM count in industrial networks |
| Hibernate mode with RTC & battery-backed RAM | Enables sub-µA sleep current with timekeeping and state retention - critical for battery-powered remote sensors |
| On-chip USB 2.0 Full-Speed PHY | Supports direct connection to host PC without external transceiver; simplifies firmware update and diagnostics |
| Hardware ADC averaging (up to 64 samples) | Improves effective resolution and noise immunity for analog sensor interfacing without CPU overhead |
| ARM Cortex-M3 with NVIC and MPU | Enables deterministic interrupt latency (< 12 cycles), memory protection, and RTOS compatibility out of the box |
Applications
| Industrial Motor Control | Building Automation Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using PWM outputs, current sensing via ADC, and CAN-based command distribution. IC Role / Device Role / Timing Role: Real-time execution host with integrated CAN messaging, precise 50 MHz timer resolution, and hibernate-ready fault recovery. Use Value: Reduces component count by integrating CAN, USB, and hibernate - enabling compact, certified motor drive modules. | Use Scenario: Protocol translation between BACnet MS/TP field devices and Ethernet/IP backbone via CAN and UART interfaces. IC Role / Device Role / Timing Role: Edge protocol gateway with dual serial stacks (CAN + UART), RTC-synchronized logging, and low-power hibernate during idle periods. Use Value: Maintains time-stamped operational logs in battery-backed RAM during AC loss, ensuring audit trail continuity. |
| Remote Sensor Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and vibration data at scheduled intervals. IC Role / Device Role / Timing Role: Low-power data acquisition node using hibernate mode, internal temperature sensor, and CAN for periodic burst transmission. Use Value: Achieves >5-year battery life via sub-2 µA hibernate current and hardware-triggered wake-up on sensor threshold events. | Use Scenario: DIN-rail mounted I/O expansion module with digital input/output, analog input conditioning, and CAN bus backplane communication. IC Role / Device Role / Timing Role: Deterministic I/O scheduler with 50 MHz instruction throughput, NVIC-managed interrupt prioritization, and CAN message queuing. Use Value: Guarantees <100 µs response to field I/O changes - meeting SIL-2 functional safety timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2965-IQC50-A2 | Same core, 512 KB flash, 96 KB SRAM, identical peripherals and pinout | Higher memory capacity for larger firmware or data buffers; no change in I/O or timing behavior | Select when firmware size exceeds 256 KB or extended data logging is required |
| TM4C123GH6PM | Successor family with enhanced CAN FD support, 80 MHz CPU, 256 KB flash, 32 KB SRAM, different pinout | Not pin-compatible; requires PCB redesign but offers higher performance and extended peripheral feature set | Choose for new designs needing CAN FD, USB OTG, or improved analog performance - not for drop-in replacement |
Compared with LM3S2608-IQC50-A2, LM3S2965-IQC50-A2 provides direct memory scalability within the same footprint and toolchain, while TM4C123GH6PM delivers architectural upgrades at the cost of layout revision - making the former ideal for firmware growth and the latter for next-generation feature requirements.
Availability
LM3S2608-IQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, remote sensor nodes, and PLC I/O modules requiring stable component supply and long-term lifecycle support.
Supply support for LM3S2608-IQC50-A2 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, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The Stellaris LM3S series was designed as the first ARM Cortex-M3-based microcontroller family for cost-sensitive, real-time industrial control applications - emphasizing integration of CAN, USB, hibernate, and analog peripherals in a single chip.
FAQ
What is the maximum operating frequency of the LM3S2608-IQC50-A2?
The LM3S2608-IQC50-A2 operates at a maximum system clock frequency of 50 MHz. This is achieved using the internal precision oscillator or an external crystal source, with all peripherals-including CAN, USB, and ADC-fully functional at this rate. The ARM Cortex-M3 core executes Thumb-2 instructions with deterministic timing, and the LM3S2608-IQC50-A2 maintains full specification compliance across its industrial temperature range without frequency derating.
Does the LM3S2608-IQC50-A2 support USB device functionality?
Yes, the LM3S2608-IQC50-A2 integrates a full-speed USB 2.0 device-mode PHY with dedicated VBUS sensing, ID detection, and DP/DM transceivers. It supports CDC, HID, and MSC class drivers via StellarisWare software libraries. The LM3S2608-IQC50-A2 does not support USB host mode or OTG, and requires no external USB transceiver for basic device enumeration and data transfer.
What power modes does the LM3S2608-IQC50-A2 support?
The LM3S2608-IQC50-A2 supports Sleep, Deep-Sleep, and Hibernate modes. Hibernate mode draws less than 2 µA and retains RTC operation and 256 bytes of battery-backed RAM. Wake-up sources include GPIO edges, RTC match events, and external interrupts. The LM3S2608-IQC50-A2 exits Hibernate in under 100 µs and restores full operation without firmware reload.
Is the LM3S2608-IQC50-A2 pin-compatible with other Stellaris LM3S devices?
The LM3S2608-IQC50-A2 shares the same 100-pin LQFP package and pinout with LM3S2730, LM3S2965, and LM3S8962 variants. Signal mapping for GPIO, CAN, USB, UART, I²C, SSI, ADC, and hibernate pins is identical across these parts. Firmware and PCB layouts are interchangeable where memory and peripheral requirements align - the LM3S2608-IQC50-A2 serves as the baseline configuration in this footprint.
What development tools support the LM3S2608-IQC50-A2?
The LM3S2608-IQC50-A2 is supported by TI's Code Composer Studio v5.x and earlier, Keil MDK-ARM v4.x, and IAR Embedded Workbench for ARM. StellarisWare Peripheral Driver Library and evaluation boards like EK-LM3S8962 provide tested BSPs and example projects. Debugging uses JTAG or SWD via LM Flash Programmer or third-party probes - all fully validated for the LM3S2608-IQC50-A2.
LM3S2608-IQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 52
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2608-IQC50-A2 FAQ
1.How can I place an order for LM3S2608-IQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2608-IQC50-A2 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 LM3S2608-IQC50-A2 reliable?
The price and inventory of LM3S2608-IQC50-A2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2608-IQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2608-IQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2608-IQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2608-IQC50-A2?
LM3S2608-IQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2608-IQC50-A2 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 LM3S2608-IQC50-A2?
For technical support, including LM3S2608-IQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2608-IQC50-A2 requirements.
6.How does Aetrix verify that LM3S2608-IQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2608-IQC50-A2 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 LM3S2608-IQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2608-IQC50-A2?
All LM3S2608-IQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2608-IQC50-A2, 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 LM3S2608-IQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S2608-IQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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