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Texas Instruments LM3S2620-IQC25-A2T
- Part No.:
- LM3S2620-IQC25-A2T
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2620-IQC25-A2T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,777
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Product details
Overview
LM3S2620-IQC25-A2T from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN, UART, I2C, SSI, ADC (10-bit, 8-channel), and hibernation module. It operates at up to 50 MHz and supports industrial motor control and embedded automation systems requiring real-time responsiveness and low-power hibernation.
For engineers reviewing the LM3S2620-IQC25-A2T datasheet, LM3S2620-IQC25-A2T pinout, LM3S2620-IQC25-A2T application, or LM3S2620-IQC25-A2T equivalent, key selection criteria include its 50 MHz Cortex-M3 core, on-chip CAN 2.0B controller, hibernation mode with RTC and battery-backed memory, and QFP-100 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The LM3S2620-IQC25-A2T 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 32.768 kHz RTC oscillator, battery-backed RAM, and wake-up capability from deep sleep using GPIO, CAN, or timer events.
Peripherals are clock-gated and configurable via the system control block; CAN operates at up to 1 Mbps with 32 message objects, while the 10-bit ADC supports scan mode with hardware trigger from timers or PWM modules - enabling closed-loop motor control without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz - delivers deterministic interrupt latency and Thumb-2 instruction efficiency for real-time firmware. |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface and single-cycle access at 50 MHz - enables fast code execution and firmware updates without external memory. |
| SRAM | 64 KB on-chip SRAM with parity protection - supports robust data buffering and stack operations in safety-critical applications. |
| CAN Interface | One CAN 2.0B controller with 32 message objects, programmable bit timing, and loopback/test modes - suitable for automotive body electronics and industrial fieldbus nodes. |
| Hibernation Module | Integrated hibernate controller with 32.768 kHz RTC, battery-backed 2 KB RAM, and wake-on-CAN/GPIO/timer - reduces system power to ~1.7 µA during standby. |
| ADC | 10-bit, 8-channel SAR ADC with sample rate up to 1 MSPS and hardware-triggered sequencing - supports analog sensing in motor current feedback and temperature monitoring. |
| Package | 100-pin LQFP (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, industrial temperature grade (–40°C to +85°C) - compatible with standard PCB assembly processes. |
Pinout & Package
LM3S2620-IQC25-A2T is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with exposed thermal pad, designed for thermal dissipation in industrial environments. Pin assignments follow TI's standardized Stellaris LM3S series layout with dedicated JTAG/SWD debug pins, dual voltage domains (VDD/VDDA), and flexible GPIO remapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA | Power supply inputs | Separate digital (3.0–3.6 V) and analog (2.7–3.6 V) supplies enable clean ADC operation and noise isolation. |
| GND, GNDA | Ground returns | Dedicated analog/digital ground planes reduce coupling between high-speed logic and sensitive analog circuits. |
| PD0–PD7, PE0–PE5, PF0–PF4, etc. | GPIO ports | Multi-function pins supporting UART, SSI, I2C, PWM, and timer capture - configurable per peripheral need via register-based muxing. |
| PA0–PA3 | CAN0 RX/TX, USB0 EPEN/DM/DP | Shared pins support either CAN transceiver interface or USB device functionality - selected at boot via GPIO configuration. |
| JTAG/SWD | TCK, TMS, TDI, TDO, nTRST, SWDIO, SWCLK | Fully compliant debug interface supporting boundary scan, flash programming, and real-time trace via TPIU. |
Key Features
| Feature | Design Value |
|---|---|
| Hibernate with RTC & Battery Backup | Enables ultra-low-power operation (<2 µA) while maintaining timekeeping and retaining critical state in 2 KB RAM - ideal for battery-powered remote sensors. |
| Integrated CAN 2.0B Controller | Eliminates need for external CAN transceiver logic; supports mailbox-based messaging, error handling, and automatic retransmission - simplifies node design in distributed control networks. |
| Peripheral Clock Gating | Individual enable/disable control per peripheral reduces dynamic power by disabling unused blocks - improves energy efficiency in duty-cycled applications. |
| GPIO Remapping Engine | Allows any supported peripheral function to be assigned to multiple pin sets - increases PCB layout flexibility and avoids routing conflicts in dense designs. |
| MPU with Eight Regions | Provides memory protection for RTOS-based systems by enforcing privilege-level access rules across flash, SRAM, and peripheral address spaces - enhances firmware reliability. |
Applications
| Industrial Motor Control | Building Automation Node |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC actuators and conveyor drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation, ADC sampling of current/voltage, and CAN-based command/response communication. Use Value: On-chip 50 MHz Cortex-M3 core and hardware-triggered ADC sequencing eliminate external timing ICs and reduce BOM count by integrating control, sensing, and networking functions. | Use Scenario: Distributed sensor node collecting temperature, humidity, and occupancy data in smart lighting and HVAC subsystems. IC Role / Device Role / Timing Role: Low-power data acquisition hub with hibernation mode, RTC wake-up, and CAN/I2C interfacing to local sensors and central controllers. Use Value: Hibernate current of 1.7 µA extends battery life to >5 years in coin-cell powered nodes, while integrated CAN ensures interoperability with existing BACnet MS/TP infrastructure. |
| Automotive Body Electronics | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Seat/mirror control module receiving LIN/CAN commands and driving DC motors and LEDs. IC Role / Device Role / Timing Role: CAN protocol handler, GPIO-controlled H-bridge driver interface, and diagnostic monitor with watchdog and fault reporting. Use Value: Single-chip solution replaces discrete MCU + CAN transceiver + watchdog IC, reducing board area and qualification effort for AEC-Q100 Level 2 compliance paths. | Use Scenario: Modular digital input/output expansion unit for compact PLCs handling 16-channel discrete signals. IC Role / Device Role / Timing Role: High-reliability interface processor managing opto-isolated inputs, relay drivers, and CAN-based backplane communication with main CPU. Use Value: 64 KB SRAM with parity and MPU enforcement ensure deterministic response to field interrupts, while hibernation mode supports safe shutdown during maintenance without losing configuration state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2965-IQC50-A2T | Same Cortex-M3 core, 512 KB flash, 96 KB SRAM, identical peripherals and pinout - higher memory capacity variant in same LQFP-100 package. | Supports larger firmware images and more complex protocol stacks (e.g., full TCP/IP + CAN gateway), but requires no PCB change. | Select when firmware growth exceeds 256 KB or additional SRAM is needed for multi-threaded RTOS tasks. |
| TM4C123GH6PM | Successor generation: Cortex-M4F core, FPU, 256 KB flash, 32 KB SRAM, enhanced CAN and USB OTG - different pinout (LQFP-64), no hibernation module. | Better suited for floating-point math (motor control, audio) but lacks battery-backed RTC and hibernate current <2 µA. | Choose for new designs needing DSP capability and USB host/device; not drop-in for legacy LM3S2620-IQC25-A2T hibernation use cases. |
Compared with LM3S2620-IQC25-A2T, the LM3S2965-IQC50-A2T offers direct pin-compatible memory scaling, while TM4C123GH6PM provides architectural upgrades at the cost of hibernation capability and requires PCB redesign - making LM3S2620-IQC25-A2T uniquely suited for ultra-low-power, CAN-centric industrial nodes where firmware size and battery life are constrained.
Availability
LM3S2620-IQC25-A2T is available at Aetrix Electronics and suitable for industrial motor control, building automation nodes, automotive body electronics, and PLC I/O modules requiring stable component supply and long-term lifecycle support.
Supply support for LM3S2620-IQC25-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 experience in industrial and automotive microcontrollers.
The Stellaris LM3S family was designed specifically for cost-sensitive, real-time embedded applications demanding integrated connectivity (CAN, USB), low-power operation, and deterministic interrupt response - targeting industrial automation, motor control, and building systems.
FAQ
What is the maximum operating frequency of the LM3S2620-IQC25-A2T?
The LM3S2620-IQC25-A2T operates at a maximum system clock frequency of 50 MHz, achieved using an internal PLL that multiplies the input crystal or oscillator signal. This frequency applies to both the Cortex-M3 core and most peripherals, with certain analog blocks (e.g., ADC) having independent clock dividers to maintain accuracy and noise immunity.
Does the LM3S2620-IQC25-A2T support hibernation mode with battery backup?
Yes, the LM3S2620-IQC25-A2T includes a dedicated hibernation module with support for battery-backed operation. It retains 2 KB of RAM and maintains RTC timekeeping while drawing as little as 1.7 µA from a coin cell. The module supports wake-up events from GPIO, CAN messages, or RTC alarms - making it suitable for long-life remote sensor applications.
Is the LM3S2620-IQC25-A2T pin-compatible with other Stellaris LM3S devices?
The LM3S2620-IQC25-A2T uses a 100-pin LQFP package shared with several LM3S variants including LM3S2965-IQC50-A2T and LM3S8962-IQC50-A2T. Pin functions are largely consistent across this package group, though specific peripheral mappings (e.g., USB vs. CAN on PA0–PA3) may differ - requiring verification against each device's datasheet before substitution.
What debug interfaces does the LM3S2620-IQC25-A2T support?
The LM3S2620-IQC25-A2T supports both JTAG and SWD (Serial Wire Debug) interfaces for programming and real-time debugging. It includes full NVIC-aware debug features, hardware breakpoints, watchpoints, and optional Trace Port Interface Unit (TPIU) output for instruction trace - all accessible through standard TI tools like Code Composer Studio and third-party debug probes.
Does the LM3S2620-IQC25-A2T include a hardware memory protection unit (MPU)?
Yes, the LM3S2620-IQC25-A2T integrates an ARM-compliant Memory Protection Unit (MPU) with eight configurable memory regions. Each region supports separate read/write/execute permissions and privilege-level enforcement, enabling robust partitioning of firmware tasks in RTOS environments and helping meet functional safety requirements such as IEC 61508 SIL-2.
LM3S2620-IQC25-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:
- 25MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, QEI, 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2620-IQC25-A2T FAQ
1.How can I place an order for LM3S2620-IQC25-A2T through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2620-IQC25-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 LM3S2620-IQC25-A2T reliable?
The price and inventory of LM3S2620-IQC25-A2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2620-IQC25-A2T is usually 5 days.
3.What payment methods are accepted for LM3S2620-IQC25-A2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2620-IQC25-A2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2620-IQC25-A2T?
LM3S2620-IQC25-A2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2620-IQC25-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 LM3S2620-IQC25-A2T?
For technical support, including LM3S2620-IQC25-A2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2620-IQC25-A2T requirements.
6.How does Aetrix verify that LM3S2620-IQC25-A2T is sourced from the original manufacturer or authorized distributors?
All LM3S2620-IQC25-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 LM3S2620-IQC25-A2T meets industry standards.
7.What is the process for return or replacement of LM3S2620-IQC25-A2T?
All LM3S2620-IQC25-A2T units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2620-IQC25-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 LM3S2620-IQC25-A2T part is unused and in its original packaging.
Return procedure for LM3S2620-IQC25-A2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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