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Texas Instruments LM3S2608-IQC50-A2T
- Part No.:
- LM3S2608-IQC50-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2608-IQC50-A2T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
LM3S2608-IQC50-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN, USB, ADC (12-bit, 1 MSPS), and hibernation module for ultra-low-power operation. It operates at up to 50 MHz and targets industrial motor control, embedded automation, and battery-backed sensor systems.
For engineers reviewing the LM3S2608-IQC50-A2T datasheet, LM3S2608-IQC50-A2T pinout, LM3S2608-IQC50-A2T application, or LM3S2608-IQC50-A2T equivalent, key selection criteria include its integrated CAN 2.0B controller, hibernation mode with RTC and battery-backed memory, USB 2.0 device support, and dual 16-bit general-purpose timers with PWM capability.
Technical Context
The LM3S2608-IQC50-A2T implements the ARM Cortex-M3 core with Thumb-2 instruction set, NVIC with 64 interrupt lines, and MPU for memory protection. It integrates a hibernation module supporting RTC wake-up, battery-backed RAM, and deep-sleep current as low as 1.7 µA.
Peripherals include one USB 2.0 device controller, two UARTs, two SSI interfaces, one I²C master/slave, one CAN 2.0B controller, eight GPIO ports, and a 12-bit 1-MSPS ADC with four sample sequencers and internal temperature sensor.
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 flash with 128-bit wide interface and single-cycle access at 50 MHz |
| SRAM | 64 KB on-chip SRAM, zero-wait-state operation up to 50 MHz |
| ADC | 12-bit, 1 MSPS SAR ADC with four independent sample sequencers and internal temperature sensor |
| CAN Interface | One CAN 2.0B-compliant controller with 32 message objects and programmable bit timing |
| Hibernation Mode | Ultra-low-power state with RTC, battery-backed 2 KB RAM, and wake-up via GPIO/RTC/CAN/USB |
| USB Support | Full-speed (12 Mbps) USB 2.0 device controller with integrated PHY and 512-byte endpoint FIFO |
Pinout & Package
LM3S2608-IQC50-A2T is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per TI SPMS046I datasheet Rev I, July 2014.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate digital (VDD), analog (VDDA), and core (VDDC) rails enable noise isolation and optimized power sequencing |
| GND, GNDA, GNDC | Ground returns | Dedicated analog (GNDA) and core (GNDC) grounds reduce coupling and improve ADC/SYS stability |
| USB0VBUS, USB0ID | USB detection pins | Enable host/device role detection and VBUS presence sensing for USB enumeration control |
| CAN0RX, CAN0TX | CAN physical layer interface | Differential receive/transmit signals compliant with ISO 11898-1; require external transceiver for bus connection |
| HIB, HIBRST | Hibernation control | HIB pin enables entry into hibernation mode; HIBRST provides reset source during wake-up from hibernation |
| SSI0CLK, SSI0FSS, SSI0RX, SSI0TX | Synchronous serial interface | Four-pin SPI-compatible interface supporting master/slave modes, programmable clock polarity/phase |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module with RTC | Enables sub-2 µA sleep current with real-time wake-up scheduling and battery-backed 2 KB RAM retention |
| Integrated CAN 2.0B Controller | Reduces BOM count by eliminating external CAN controller; supports 32 message objects and automatic retransmission |
| USB 2.0 Full-Speed Device | Eliminates need for external USB PHY; includes on-chip transceiver and endpoint FIFO for HID/class-compliant devices |
| Dual 16-Bit General-Purpose Timers | Each timer supports one-shot, periodic, PWM, input capture, and quadrature encoder modes - ideal for motor control feedback |
| Programmable GPIO with Commit Control | Prevents accidental configuration changes via write-protection register; enhances field reliability in noisy environments |
Applications
| Industrial Motor Control | Embedded Automation Gateway |
|---|---|
Use Scenario: Closed-loop BLDC motor drive with position feedback, current sensing, and CAN-based command interface. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing PWM generation, ADC sampling, and CAN communication. Use Value: Integrated 12-bit ADC with hardware averaging and dual GPTMs with quadrature encoder input eliminate external signal conditioning and timing ICs. | Use Scenario: Fieldbus-to-Ethernet gateway aggregating Modbus RTU data over RS-485 and forwarding via TCP/IP stack. IC Role / Device Role / Timing Role: Protocol translation engine with UART-to-CAN bridging, USB CDC virtual COM port, and real-time packet scheduling. Use Value: On-chip CAN + dual UART + USB + hibernation enables low-power edge node operation with multiple legacy interface support. |
| Battery-Powered Sensor Node | USB Human Interface Device |
Use Scenario: Wireless environmental monitor powered by coin cell, logging temperature/humidity and transmitting via CAN or USB on demand. IC Role / Device Role / Timing Role: System-on-chip sensor aggregator with RTC-triggered wake-up, ADC acquisition, and low-power data transmission. Use Value: Hibernation current of 1.7 µA and battery-backed RAM allow multi-year operation without firmware reload or data loss. | Use Scenario: Programmable industrial keypad with tactile feedback, LED indicators, and USB HID report generation. IC Role / Device Role / Timing Role: USB HID class-compliant device controller handling key scan matrix, debouncing, and report packetization. Use Value: Integrated USB PHY and endpoint FIFO simplify layout and reduce component count versus MCU + external transceiver solutions. |
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 same pinout, higher clock (80 MHz), enhanced USB OTG, and updated peripheral set; requires firmware migration. | Supports USB host mode and Ethernet MAC; better suited for complex protocol stacks and higher throughput. | Select when upgrading legacy Stellaris designs or requiring USB OTG/Ethernet integration. |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, no native CAN+USB combo; requires external transceiver and lacks hibernation module. | Lacks integrated hibernation and battery-backed RAM; USB and CAN require separate PHYs and more PCB area. | Select when prioritizing larger flash, broader ecosystem, and lower unit cost - but accept added design complexity. |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S2608-IQC50-A2T offers unique integration of CAN, USB, and hibernation in a single 100-pin LQFP package - enabling compact, ultra-low-power industrial nodes without external interface ICs.
Availability
LM3S2608-IQC50-A2T is available at Aetrix Electronics and suitable for industrial motor control, embedded automation gateways, and battery-powered sensor nodes requiring stable component supply and long-term lifecycle support.
Supply support for LM3S2608-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 leader specializing in analog, embedded processing, and connectivity technologies, with decades of industrial and automotive qualification expertise.
The Stellaris LM3S series was designed specifically for deterministic real-time control in resource-constrained industrial environments - emphasizing low-latency peripherals, robust power management, and integrated communication interfaces.
FAQ
What is the maximum operating frequency of the LM3S2608-IQC50-A2T?
The LM3S2608-IQC50-A2T operates at a maximum system clock frequency of 50 MHz, derived from its internal PLL or external crystal oscillator. This speed is fully supported across all on-chip peripherals including the ADC, timers, and communication interfaces, as verified in the SPMS046I datasheet Section 5.2.4. The LM3S2608-IQC50-A2T maintains timing compliance under industrial temperature range (–40°C to +85°C) and nominal 3.3 V supply.
Does the LM3S2608-IQC50-A2T support USB host functionality?
No, the LM3S2608-IQC50-A2T only supports USB 2.0 full-speed device mode - it lacks USB OTG or host controller logic. Its USB peripheral is strictly configured as a device endpoint with integrated PHY and 512-byte FIFO. For host capability, consider the successor TM4C123GH6PM. The LM3S2608-IQC50-A2T remains optimal for HID, CDC, or custom USB device implementations where host-side control resides externally.
How much battery-backed memory does the LM3S2608-IQC50-A2T provide in hibernation mode?
The LM3S2608-IQC50-A2T provides 2 KB of battery-backed SRAM that retains data during hibernation mode, powered by an external VBAT supply. This memory is accessible only while in hibernation or after wake-up before exiting the mode. The LM3S2608-IQC50-A2T also includes a dedicated hibernation RTC and supports wake-up events from GPIO, RTC match, CAN activity, or USB resume - all documented in Section 6 of SPMS046I.
Is the LM3S2608-IQC50-A2T pin-compatible with other Stellaris LM3S devices?
The LM3S2608-IQC50-A2T uses a 100-pin LQFP package shared with several LM3S family members (e.g., LM3S8962, LM3S9B92), but pin functions differ across variants due to peripheral enablement and routing constraints. While mechanical footprint matches, electrical compatibility requires verification against each target device's datasheet. The LM3S2608-IQC50-A2T specifically enables CAN0, USB0, and HIB signals on defined pins - not guaranteed on other LM3S variants.
What development tools are officially supported for the LM3S2608-IQC50-A2T?
Texas Instruments officially supports the LM3S2608-IQC50-A2T with Keil MDK-ARM, IAR Embedded Workbench, and GCC-based toolchains via the StellarisWare Peripheral Driver Library. Debugging is enabled through JTAG/SWD using TI XDS100v2 or Segger J-Link probes. The LM3S2608-IQC50-A2T is compatible with the original Stellaris Evaluation Kits (EK-LM3S811, EK-LM3S9B92) when configured for matching peripherals and pin mappings.
LM3S2608-IQC50-A2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2608-IQC50-A2T FAQ
1.How can I place an order for LM3S2608-IQC50-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2608-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 LM3S2608-IQC50-A2T reliable?
The price and inventory of LM3S2608-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 LM3S2608-IQC50-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2608-IQC50-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2608-IQC50-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2608-IQC50-A2T?
LM3S2608-IQC50-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2608-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 LM3S2608-IQC50-A2T?
For technical support, including LM3S2608-IQC50-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2608-IQC50-A2T requirements.
6.How does Aetrix verify that LM3S2608-IQC50-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2608-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 LM3S2608-IQC50-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2608-IQC50-A2T?
All LM3S2608-IQC50-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2608-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 LM3S2608-IQC50-A2T part is unused and in its original packaging.
Return procedure for LM3S2608-IQC50-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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