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Texas Instruments LM3S2620-EQC25-A2
- Part No.:
- LM3S2620-EQC25-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2620-EQC25-A2.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM3S2620-EQC25-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 32 KB SRAM, integrated CAN 2.0A/B controller, 8-channel 10-bit ADC, and hibernation module for ultra-low-power operation. It operates at up to 50 MHz and targets industrial motor control, building automation, and embedded CAN networks.
For engineers reviewing the LM3S2620-EQC25-A2 datasheet, LM3S2620-EQC25-A2 pinout, LM3S2620-EQC25-A2 application, or LM3S2620-EQC25-A2 equivalent, key selection criteria include its integrated CAN interface, hibernation power management, 50 MHz Cortex-M3 core, and QFP-100 package compatibility with legacy Stellaris designs.
Technical Context
The LM3S2620-EQC25-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 RTC, battery-backed memory, and wake-on-external-interrupt capability.
Peripheral set includes dual UARTs (one with IrDA/SIR), two SSI modules, I²C master/slave, eight 16-bit GPTMs (configurable as 32-bit), watchdog, analog comparators, and a dedicated CAN 2.0A/B controller supporting bit rates up to 1 Mbps - all clocked from a programmable PLL with internal oscillator or external crystal input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, runs at up to 50 MHz - enables deterministic real-time control with <12-cycle interrupt latency. |
| Flash Memory | 256 KB on-chip flash with 128-bit wide interface - supports in-application programming and secure code protection. |
| SRAM | 32 KB single-cycle SRAM - sufficient for RTOS stacks, CAN message buffers, and sensor data processing. |
| CAN Interface | Dedicated CAN 2.0A/B controller with 32 message objects and programmable bit timing - handles full CAN protocol stack offload without CPU intervention. |
| Hibernation Module | Integrated hibernate controller with RTC, battery-backed RAM (2 KB), and wake-on-pin/RTC/CAN - reduces active current to 1.7 µA typical. |
| Analog Input | 8-channel 10-bit ADC with 1 MSPS sample rate and hardware sequencer - supports simultaneous sampling of motor phase currents or environmental sensors. |
| Package | 100-pin LQFP (EQC), 14 × 14 mm, 0.5 mm pitch - compatible with standard PCB assembly processes and thermal management for industrial ambient. |
Pinout & Package
LM3S2620-EQC25-A2 is housed in a 100-pin Low-Profile Quad Flat Package (LQFP-100) with exposed thermal pad. Pin functions are defined per TI SPMS048I datasheet Rev I (July 2014), including dedicated CANH/CANL, hibernate enable (HIB), RTC crystal inputs (X1/X2), and multiplexed GPIOs with peripheral alternate functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Separate domains for digital logic (VDD), analog (VDDA), and core (VDDC) - enable noise isolation for ADC and PLL stability. |
| CAN0RX / CAN0TX | CAN physical layer interface | Dedicated differential receive/transmit pins for CAN0 controller - require external transceiver (e.g., SN65HVD230) for bus connection. |
| HIB | Hibernate enable input | Active-low signal that initiates hibernation mode; must be driven low to enter low-power state with RTC running. |
| X1 / X2 | RTC crystal oscillator terminals | Supports 32.768 kHz crystal for hibernation-mode RTC - maintains timekeeping during deep sleep with battery backup. |
| PA0–PA7, PB0–PB7, etc. | General-purpose I/O | Multiplexed with UART, SSI, I²C, PWM, and timer capture - configurable pull-up/down, slew rate, and drive strength per pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0A/B Controller | Offloads full CAN protocol handling including message filtering, arbitration, retransmission, and error management - eliminates need for external CAN controller. |
| Hibernation Mode with RTC | Reduces system power to 1.7 µA while maintaining real-time clock and 2 KB battery-backed SRAM - enables years-long operation on coin-cell batteries. |
| ARM Cortex-M3 Core + NVIC | Hardware-based nested vectored interrupt controller with 32 priority levels - ensures sub-12-cycle interrupt response for time-critical motor control loops. |
| Programmable PLL with Internal Oscillator | Generates 50 MHz system clock from internal 6 MHz RC oscillator or external crystal - removes need for high-frequency external clock source. |
| 8-Channel 10-Bit ADC with Sequencer | Hardware-triggered conversion sequence across up to 8 channels - supports synchronized sampling for three-phase motor current sensing without CPU overhead. |
Applications
| Industrial Motor Control | Building Automation Node |
|---|---|
Use Scenario: Closed-loop control of BLDC or stepper motors in HVAC actuators and pump drives using field-oriented control (FOC). IC Role / Device Role / Timing Role: Real-time execution of FOC algorithms, PWM generation via GPTMs, current sensing via ADC, and CAN-based command/response communication. Use Value: Integrated CAN and hibernation allow remote commissioning and firmware updates over bus, while low-power sleep extends battery life in wireless valve controllers. | Use Scenario: Distributed sensor node aggregating temperature, occupancy, and lighting status in commercial buildings. IC Role / Device Role / Timing Role: Sensor interface hub with I²C/ADC for local sensing, UART for RS-485 gateway link, and CAN for backbone network connectivity. Use Value: Single-chip solution replaces multi-IC design - reduces BOM cost and board area while enabling scheduled wake-up for periodic reporting. |
| Automotive Body Control Module | Energy Monitoring Gateway |
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in light vehicles using CAN bus. IC Role / Device Role / Timing Role: CAN message handler with mailbox filtering, GPIO-driven relay/LED control, and watchdog supervision for functional safety compliance. Use Value: On-chip hibernation allows module to remain responsive to CAN wake-up frames while consuming <2 µA - meets OEM quiescent current requirements. | Use Scenario: Smart metering gateway collecting data from submeters (electricity, water, gas) and forwarding via CAN or UART to concentrator. IC Role / Device Role / Timing Role: Protocol translator between Modbus RTU (via UART), pulse-count inputs (via GPIO), and CAN-based upstream network. Use Value: Dual UARTs and CAN enable concurrent serial and bus communication - eliminates need for external bridge ICs and simplifies certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TM4C123GH6PM | Successor part with 80 MHz Cortex-M4F core, 256 KB flash, 32 KB SRAM, same pinout (LQFP-100), enhanced peripherals including USB and floating-point unit. | Supports USB device/host, higher computational throughput, and IEEE 754 FPU - suitable for advanced motor control or protocol stack offload. | Select TM4C123GH6PM when upgrading for performance headroom, USB connectivity, or floating-point math without PCB redesign. |
| STM32F103VCT6 | ARM Cortex-M3 at 72 MHz, 256 KB flash, 48 KB SRAM, CAN 2.0B, but no hibernation module or integrated RTC crystal oscillator circuitry. | Lacks hibernation power mode and battery-backed memory - requires external RTC and discrete power management for ultra-low-power use cases. | Select STM32F103VCT6 where higher clock speed and larger SRAM are prioritized over sub-µA hibernation and integrated RTC oscillator. |
Compared with LM3S2620-EQC25-A2, TM4C123GH6PM offers drop-in upgrade path with enhanced features and lifecycle support, while STM32F103VCT6 provides higher clock speed and SRAM but lacks hibernation - requiring external components to match LM3S2620-EQC25-A2's low-power capabilities.
Availability
LM3S2620-EQC25-A2 is available at Aetrix Electronics and suitable for industrial motor control, building automation nodes, and automotive body control modules requiring stable component supply and long-term obsolescence management.
Supply support for LM3S2620-EQC25-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 and embedded processing solutions for industrial, automotive, and consumer markets.
The Stellaris LM3S family was designed as the first ARM Cortex-M3-based MCU line for cost-sensitive, real-time embedded applications requiring integrated connectivity and low-power operation - targeting replacement of 8/16-bit MCUs in industrial and building systems.
FAQ
What is the maximum operating frequency of the LM3S2620-EQC25-A2?
The LM3S2620-EQC25-A2 operates at a maximum system clock frequency of 50 MHz, achieved via its on-chip PLL that can multiply the internal 6 MHz RC oscillator or an external crystal input. This frequency is fully supported across all peripherals and memory interfaces, enabling deterministic real-time execution for motor control and communication tasks. The LM3S2620-EQC25-A2 maintains timing compliance under industrial temperature ranges (–40°C to +105°C) per its qualified A2 grade rating.
Does the LM3S2620-EQC25-A2 support CAN FD?
No, the LM3S2620-EQC25-A2 implements only CAN 2.0A/B protocol compliance - it does not support CAN FD features such as flexible data-rate, extended data length, or CRC enhancements. Its CAN controller supports standard and extended identifiers, programmable bit timing up to 1 Mbps, and 32 message objects with hardware filtering. For CAN FD, designers should consider newer TI devices like the TM4C129x series or automotive-grade C2000™ MCUs. The LM3S2620-EQC25-A2 remains suitable for legacy CAN networks in industrial and building automation.
What power modes does the LM3S2620-EQC25-A2 support?
The LM3S2620-EQC25-A2 supports Sleep, Deep-Sleep, and Hibernation modes. Hibernation mode draws just 1.7 µA typical and retains RTC operation and 2 KB of battery-backed SRAM. Sleep and Deep-Sleep reduce dynamic power by gating clocks to unused peripherals and the CPU, respectively. All modes are entered via CMSIS-compliant SCB->SCR register writes and exited via interrupts or reset. The LM3S2620-EQC25-A2's hibernation module includes dedicated battery-switchover circuitry and X1/X2 crystal oscillator support - critical for long-life battery-powered applications.
Is the LM3S2620-EQC25-A2 pin-compatible with other Stellaris devices?
Yes, the LM3S2620-EQC25-A2 shares the same 100-pin LQFP (EQC) package and pin mapping with several other Stellaris LM3S devices, including LM3S2110, LM3S2275, and LM3S2965 - enabling hardware reuse across product variants. However, peripheral enablement and feature sets differ; for example, only select models include CAN or hibernation. Designers must verify peripheral register maps and clock tree configurations before substitution. The LM3S2620-EQC25-A2 specifically integrates both CAN and hibernation, making it distinct within the EQC-100 footprint family.
What development tools are supported for the LM3S2620-EQC25-A2?
The LM3S2620-EQC25-A2 is supported by Texas Instruments' Code Composer Studio™ IDE, Keil MDK-ARM, and IAR Embedded Workbench®. TI's StellarisWare Peripheral Driver Library provides production-ready drivers for all on-chip peripherals, including CAN, hibernation, ADC, and timers. Evaluation is enabled via the original Stellaris DK-LM3S2620 development kit, which includes JTAG debugging, onboard CAN transceiver, and expansion headers. Legacy toolchains remain functional, though TI now recommends migration paths to TM4C-based tools for ongoing support. The LM3S2620-EQC25-A2 continues to be deployable with these mature, validated environments.
LM3S2620-EQC25-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2620-EQC25-A2 FAQ
1.How can I place an order for LM3S2620-EQC25-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2620-EQC25-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 LM3S2620-EQC25-A2 reliable?
The price and inventory of LM3S2620-EQC25-A2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2620-EQC25-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2620-EQC25-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2620-EQC25-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2620-EQC25-A2?
LM3S2620-EQC25-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2620-EQC25-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 LM3S2620-EQC25-A2?
For technical support, including LM3S2620-EQC25-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2620-EQC25-A2 requirements.
6.How does Aetrix verify that LM3S2620-EQC25-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2620-EQC25-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 LM3S2620-EQC25-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2620-EQC25-A2?
All LM3S2620-EQC25-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2620-EQC25-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 LM3S2620-EQC25-A2 part is unused and in its original packaging.
Return procedure for LM3S2620-EQC25-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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