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Texas Instruments LM3S2110-EQC25-A2
- Part No.:
- LM3S2110-EQC25-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2110-EQC25-A2.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,160
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Product details
Overview
LM3S2110-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, 4 UARTs, 2 I²C, 2 SSI, 8-channel 10-bit ADC, and PWM peripherals. It operates at up to 50 MHz and targets real-time industrial control systems requiring deterministic timing and fieldbus connectivity.
For engineers reviewing the LM3S2110-EQC25-A2 datasheet, LM3S2110-EQC25-A2 pinout, LM3S2110-EQC25-A2 application, or LM3S2110-EQC25-A2 equivalent, key selection criteria include CAN interface support, on-chip flash/SRAM size, clock speed, peripheral mix (especially dual UART + CAN), and QFP-100 package compatibility for industrial PCB layouts.
Technical Context
The LM3S2110-EQC25-A2 implements the ARMv7-M architecture with NVIC-based interrupt handling, bit-band memory access, and SysTick timer. Its system-level design integrates a programmable 2–50 MHz PLL, power management with sleep/deep-sleep modes, and memory protection unit (MPU) for embedded safety-critical tasks.
Peripherals are memory-mapped and accessed via APB bus; CAN module supports full CAN 2.0B protocol with 32 message objects, while analog subsystem includes internal voltage reference and sample-and-hold for ADC conversions. All timers support capture/compare and PWM generation with configurable dead-band insertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit RISC, Thumb-2 instruction set - enables efficient C/C++ execution and deterministic interrupt latency under 12 cycles. |
| Max Clock Speed | 50 MHz - delivers 38.3 DMIPS performance suitable for real-time motor control loops and protocol stack processing. |
| Flash Memory | 256 KB - sufficient for bootloader, application firmware, and parameter storage without external memory. |
| SRAM | 32 KB - supports real-time data buffering, stack/heap allocation, and CAN message object RAM. |
| CAN Interface | One CAN 2.0A/B controller with 32 message objects - enables full node functionality in J1939 or CANopen networks without external transceiver logic. |
| ADC | 8-channel 10-bit SAR ADC with 1 MSPS sample rate - supports analog sensor acquisition in industrial monitoring applications. |
| Package | 100-pin LQFP (EQC25) - 14 × 14 mm body, 0.5 mm pitch, RoHS-compliant, compatible with standard reflow profiles. |
Pinout & Package
LM3S2110-EQC25-A2 is housed in a 100-pin Low-Profile Quad Flat Package (LQFP) with exposed thermal pad, designated EQC25 by Texas Instruments. Pin numbering follows standard counter-clockwise convention starting from top-left corner (Pin 1 marked).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Digital core (VDD), analog (VDDA), and PLL/clock (VDDC) rails require separate 3.3 V filtering to minimize noise coupling into ADC and PLL. |
| GND, GNDA, GNDC | Ground returns | Analog ground (GNDA) must be isolated from digital ground except at single-point connection near regulator to preserve ADC SNR. |
| PA0–PA7, PB0–PB7, etc. | GPIO banks A–G | Each port supports configurable pull-up/down, slew rate, drive strength (2/4/8 mA), and alternate function mapping to UART/I²C/SSI/CAN signals. |
| CAN0RX / CAN0TX | CAN physical layer interface | Dedicated differential pair routed to external CAN transceiver; requires 120 Ω termination at network ends, not on MCU side. |
| USB0VBUS, USB0ID | USB OTG detection | Supports device/host mode detection via VBUS sensing and ID pin; not used if USB peripheral is disabled in firmware. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CAN 2.0B controller | Eliminates need for external CAN controller IC and reduces BOM count in automotive diagnostics and industrial automation nodes. |
| Memory Protection Unit (MPU) | Enables secure partitioning of flash/SRAM regions to isolate bootloader, application, and peripheral drivers - critical for functional safety compliance. |
| Bit-band alias region | Allows atomic read-modify-write of individual peripheral register bits without disabling interrupts - essential for real-time ISR reliability. |
| Dual 16-bit PWM modules | Each supports complementary outputs with programmable dead-band delay (1–1023 ns), enabling three-phase motor gate drive without external logic. |
| Internal precision voltage reference | 2.5 V ±1% internal reference for ADC - removes need for external reference IC in cost-sensitive sensor measurement designs. |
Applications
| Industrial PLC I/O Module | Automotive Diagnostic Tool |
|---|---|
Use Scenario: Compact remote I/O node collecting analog sensor data and controlling solenoids via CAN bus in factory floor machinery. IC Role / Device Role / Timing Role: Central controller executing ladder logic scan, managing CAN communication, and driving PWM outputs for proportional valves. Use Value: On-chip 256 KB flash stores multiple firmware versions; integrated CAN and 10-bit ADC reduce component count versus discrete solutions. | Use Scenario: Handheld OBD-II scanner interfacing with vehicle ECUs via high-speed CAN and displaying diagnostic trouble codes on LCD. IC Role / Device Role / Timing Role: Protocol translator between USB host PC and ISO 11898-2 CAN bus, handling J1939/UDS message framing and timing-critical ACK/NACK responses. Use Value: 50 MHz Cortex-M3 ensures sub-100 µs response to CAN arbitration loss; built-in USB PHY simplifies host connectivity. |
| Motor Drive Feedback Controller | Smart Energy Meter Communication Hub |
Use Scenario: Closed-loop servo controller acquiring encoder quadrature signals and current sense ADC readings while generating gate-drive PWM. IC Role / Device Role / Timing Role: Real-time motion controller synchronizing ADC sampling, PWM update, and CAN status reporting within 1 µs jitter budget. Use Value: Dual PWM modules with hardware dead-band insertion prevent shoot-through in H-bridge drivers without software overhead. | Use Scenario: Utility meter concentrator aggregating data from multiple meters over RS-485 and forwarding via CAN or GPRS modem using standardized DLMS/COSEM protocol. IC Role / Device Role / Timing Role: Fieldbus gateway processor managing concurrent UART (RS-485), CAN, and SPI (modem interface) with time-stamped event logging. Use Value: Four UARTs allow simultaneous connection to meter interfaces, display, modem, and debug port - eliminating external UART expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3S2678-IQC50-A2 | Same core, 512 KB flash, 64 KB SRAM, adds Ethernet MAC + PHY - larger die, higher power, no CAN FIFO enhancement. | Better suited for networked HMI or gateway applications where Ethernet dominates over CAN bandwidth requirements. | Select LM3S2678-IQC50-A2 only when Ethernet connectivity is mandatory and board space/power budget permits larger package. |
| TM4C123GH6PM | Successor family with same pinout, 80 MHz, 256 KB flash, 32 KB SRAM, enhanced CAN filtering, and improved ADC linearity (12-bit effective). | Offers longer lifecycle, better toolchain support, and extended temperature range (–40°C to 105°C vs. –40°C to 85°C). | Prefer TM4C123GH6PM for new designs requiring long-term availability, higher performance, or extended temperature operation. |
Compared with LM3S2110-EQC25-A2, LM3S2678-IQC50-A2 trades CAN optimization for Ethernet capability, while TM4C123GH6PM provides architectural continuity with measurable improvements in speed, ADC accuracy, and vendor support - making it the recommended upgrade path for production designs.
Availability
LM3S2110-EQC25-A2 is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, motor control, and smart metering applications requiring stable component supply and legacy design continuity.
Supply support for LM3S2110-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, specializing in analog, embedded processing, and wireless technologies since 1930.
The Stellaris LM3S series was designed specifically for cost-sensitive, real-time industrial and automotive applications requiring integrated CAN, robust flash memory, and deterministic ARM Cortex-M3 execution - targeting replacement of 8/16-bit MCUs in fieldbus-connected equipment.
FAQ
What is the operating temperature range for LM3S2110-EQC25-A2?
The LM3S2110-EQC25-A2 is rated for industrial temperature operation from –40°C to +85°C ambient. This range is validated across all specified electrical parameters including flash programming voltage, ADC accuracy, and CAN timing compliance. The 'A2' suffix confirms qualification to this grade, and thermal derating is not required within these limits for standard PCB layouts with adequate copper pour.
Does LM3S2110-EQC25-A2 support USB device mode?
Yes, LM3S2110-EQC25-A2 includes a full-speed USB 2.0 device controller with integrated PHY and supports USB device mode (not host or OTG). It implements CDC, HID, and MSC class drivers via StellarisWare libraries. USB functionality requires external 1.5 kΩ pull-up resistor on D+ and proper VBUS detection circuitry per TI Application Report SPMA072.
How many CAN message objects does LM3S2110-EQC25-A2 support?
LM3S2110-EQC25-A2 supports 32 independent CAN message objects, each configurable as transmit or receive with mask/filter settings. These objects reside in dedicated SRAM and are managed by hardware acceptance filtering - enabling concurrent handling of standard (11-bit) and extended (29-bit) identifiers without CPU intervention during reception.
Is LM3S2110-EQC25-A2 pin-compatible with other Stellaris LM3S devices?
No, LM3S2110-EQC25-A2 is not fully pin-compatible with other LM3S devices in different package variants (e.g., LM3S2139 in 64-pin TQFP). While some GPIO and peripheral signal mappings overlap, power pin placement, VDDA/GNDA routing, and CAN/USB pin assignments differ. Board layout reuse requires verification against the specific EQC25 footprint and signal integrity guidelines in the LM3S2110 datasheet.
What debug interface does LM3S2110-EQC25-A2 use?
LM3S2110-EQC25-A2 uses IEEE 1149.1 JTAG interface for debugging and programming, supporting SWD (Serial Wire Debug) mode via the same 5-pin header (TCK, TMS, TDI, TDO, nTRST). TI's ICDI-based debuggers (e.g., Tiva C Series LaunchPad) and third-party tools like Segger J-Link provide full SWD/JTAG support with breakpoints, watchpoints, and real-time memory inspection.
LM3S2110-EQC25-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 25MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K 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:
LM3S2110-EQC25-A2 FAQ
1.How can I place an order for LM3S2110-EQC25-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2110-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 LM3S2110-EQC25-A2 reliable?
The price and inventory of LM3S2110-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 LM3S2110-EQC25-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2110-EQC25-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2110-EQC25-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2110-EQC25-A2?
LM3S2110-EQC25-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2110-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 LM3S2110-EQC25-A2?
For technical support, including LM3S2110-EQC25-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2110-EQC25-A2 requirements.
6.How does Aetrix verify that LM3S2110-EQC25-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2110-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 LM3S2110-EQC25-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2110-EQC25-A2?
All LM3S2110-EQC25-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2110-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 LM3S2110-EQC25-A2 part is unused and in its original packaging.
Return procedure for LM3S2110-EQC25-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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