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Texas Instruments LM3S2965-EQC50-A2
- Part No.:
- LM3S2965-EQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2965-EQC50-A2.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,011
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Product details
Overview
LM3S2965-EQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0A/B controller, 12-bit ADC (up to 1 MSPS), and hibernation module supporting RTC and battery-backed memory. It operates at 50 MHz and targets industrial motor control and embedded automation systems requiring deterministic real-time response.
For engineers reviewing the LM3S2965-EQC50-A2 datasheet, LM3S2965-EQC50-A2 pinout, LM3S2965-EQC50-A2 application, or LM3S2965-EQC50-A2 equivalent, key selection criteria include its dual UART + SSI + I²C + CAN interface set, hibernation power management down to 1.8 µA, and integrated analog peripherals for sensor interfacing without external signal conditioning.
Technical Context
The LM3S2965-EQC50-A2 implements the ARMv7-M architecture with NVIC-based interrupt handling, bit-band addressing, and MPU support. Its system-level design includes a dedicated hibernation module with independent 32.768 kHz RTC oscillator, battery-backed RAM, and wake-up on external GPIO or RTC match.
Peripherals are clock-gated and configurable via RCGC registers; the CAN module supports full CAN 2.0B protocol with 32 message objects and hardware acceptance filtering, while the ADC features four sample sequencers with hardware averaging and internal temperature sensor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 50 MHz max - enables deterministic real-time execution with <12-cycle interrupt latency |
| Flash / SRAM | 256 KB / 64 KB - sufficient for complex motor control algorithms plus communication stacks |
| ADC | 12-bit, 1 MSPS, 8-channel - supports simultaneous sampling of current/voltage feedback in servo drives |
| CAN Interface | CAN 2.0A/B compliant, 32 message objects - enables robust fieldbus communication in industrial networks |
| Hibernate Current | 1.8 µA typical - allows battery-powered operation for months in low-duty-cycle monitoring applications |
| Package | 100-pin LQFP (EQC) - provides full peripheral access with 68 GPIOs and thermal pad for industrial PCB layouts |
| Operating Temp | –40°C to +105°C - qualified for extended-temperature industrial environments |
Pinout & Package
LM3S2965-EQC50-A2 uses a 100-pin LQFP package (body size 14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pinout supports full peripheral mapping including dual CAN transceivers, four UARTs, two SSI, I²C, hibernation control signals (HIB, RTCCLK), and dedicated analog inputs (AIN0–AIN7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VDDA | Core & Analog Supply | Separate 3.3 V domains enable noise isolation between digital logic and ADC reference |
| HIB / RTCCLK | Hibernate Control / RTC Clock Input | Direct connection to external 32.768 kHz crystal enables autonomous wake-up without CPU involvement |
| CAN0RX / CAN0TX | CAN Bus Interface | Dedicated differential pair for CAN 2.0B physical layer signaling with internal pull-ups |
| PA0–PA7, PB0–PB7, etc. | GPIO / Peripheral Multiplex | 68 total GPIOs with programmable drive strength, slew rate, and interrupt capability per pin |
| AIN0–AIN7 | Analog Input Channels | Eight dedicated pins routed to ADC with internal 1.65 V reference and temperature sensor path |
Key Features
| Feature | Design Value |
|---|---|
| Hibernation Module | Independent power domain with RTC, battery-backed RAM, and wake-on-external-GPIO - eliminates need for external RTC IC |
| CAN 2.0B Controller | 32 message objects with hardware acceptance filtering and FIFO mode - reduces CPU overhead in multi-node bus systems |
| ADC Hardware Averaging | Up to 64-sample hardware averaging per sequence - improves SNR without software intervention |
| Peripheral Clock Gating | Individual RCGC register control per peripheral - enables precise power optimization in sleep modes |
| Bit-Band Memory Region | Atomic read-modify-write access to peripheral registers - simplifies thread-safe driver development |
Applications
| Industrial Motor Drives | Building Automation Controllers |
|---|---|
Use Scenario: Closed-loop control of BLDC motors using PWM, current sensing, and position feedback. IC Role / Device Role / Timing Role: Real-time execution engine managing PWM generation, ADC sampling, and CAN-based command distribution. Use Value: Deterministic 50 MHz Cortex-M3 core with sub-12-cycle interrupt latency ensures jitter-free commutation timing. | Use Scenario: HVAC zone controllers collecting temperature/humidity data and communicating over BACnet MS/TP via CAN. IC Role / Device Role / Timing Role: System-on-chip integrating sensor interface, CAN protocol stack, and hibernation-aware scheduling. Use Value: Integrated CAN 2.0B and hibernation module reduce BOM count and extend battery life in wireless sensor nodes. |
| Energy Metering Gateways | Factory Floor I/O Modules |
Use Scenario: Aggregating pulse outputs from multiple utility meters and transmitting via RS-485 or CAN to central SCADA. IC Role / Device Role / Timing Role: Protocol gateway with dual UARTs, CAN, and precision time-stamping via RTC. Use Value: Hardware RTC with battery backup maintains accurate time stamping during main power loss. | Use Scenario: Distributed digital input/output modules connecting PLCs to field sensors and actuators. IC Role / Device Role / Timing Role: Intelligent edge node performing local logic, diagnostics, and CAN bus arbitration. Use Value: 68 GPIOs with programmable slew rate and 105°C rating ensure reliable operation in electrically noisy factory environments. |
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 device with same pinout, 80 MHz Cortex-M4F, FPU, and enhanced CAN filtering; requires firmware update for FPU use. | Higher computational throughput for floating-point math; no hibernation current advantage over LM3S2965-EQC50-A2. | Choose when migrating legacy code to newer silicon with FPU support and longer TI product lifecycle. |
| STM32F103VET6 | ARM Cortex-M3 at 72 MHz, 512 KB flash, 64 KB SRAM, but lacks integrated CAN 2.0B controller and hibernation module. | Requires external CAN transceiver and RTC IC; better suited for cost-sensitive applications where CAN is optional. | Choose when CAN is not required and higher flash density is prioritized over ultra-low-power hibernation. |
Compared with TM4C123GH6PM and STM32F103VET6, the LM3S2965-EQC50-A2 uniquely combines CAN 2.0B, hibernation with RTC, and industrial temperature range in a single 100-pin LQFP package-making it optimal for battery-backed fieldbus nodes where power budget and peripheral integration are critical.
Availability
LM3S2965-EQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, building automation, energy metering gateways, and factory floor I/O modules requiring stable component supply across extended product lifecycles.
Supply support for LM3S2965-EQC50-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 connectivity solutions for industrial, automotive, and consumer markets.
The Stellaris LM3S family was designed specifically for deterministic real-time embedded control in harsh industrial environments, emphasizing peripheral integration, low-power hibernation, and CAN fieldbus readiness.
FAQ
What is the maximum operating frequency of the LM3S2965-EQC50-A2?
The LM3S2965-EQC50-A2 operates at a maximum system clock frequency of 50 MHz, derived from an internal PLL that accepts input from either the main oscillator (4–25 MHz) or precision internal 600 kHz oscillator. This frequency is specified under full industrial temperature range (–40°C to +105°C) and 3.3 V supply conditions, and is validated in the production datasheet DS-LM3S2965-15852.2743.
Does the LM3S2965-EQC50-A2 support CAN FD or only classical CAN?
The LM3S2965-EQC50-A2 supports only classical CAN 2.0A/B protocols-not CAN FD. Its CAN module implements 32 message objects with hardware acceptance filtering, transmit/receive FIFOs, and error counters, all compliant with ISO 11898-1:2003. CAN FD features such as flexible data-rate and extended payload are absent and not supported by the silicon revision or firmware libraries for the LM3S2965-EQC50-A2.
How much current does the LM3S2965-EQC50-A2 draw in hibernate mode?
The LM3S2965-EQC50-A2 draws 1.8 µA typical in hibernate mode with RTC enabled and battery-backed RAM active, as measured at 3.3 V and 25°C per the official Texas Instruments production datasheet. This value increases to 2.5 µA maximum over the full –40°C to +105°C temperature range, making it suitable for multi-year battery operation in remote monitoring applications.
Is the LM3S2965-EQC50-A2 pin-compatible with other Stellaris LM3S devices?
The LM3S2965-EQC50-A2 is not fully pin-compatible with other LM3S devices-even within the same EQC package variant-due to differences in peripheral mapping and alternate function assignments. For example, CAN0TX/CAN0RX appear on different pins in LM3S2671 vs. LM3S2965. Always verify pinout against the specific LM3S2965-EQC50-A2 datasheet section 4.3.1 before board layout.
What debug interfaces does the LM3S2965-EQC50-A2 support?
The LM3S2965-EQC50-A2 supports JTAG and SWD (Serial Wire Debug) interfaces for programming and real-time debugging. The JTAG TAP controller is implemented per IEEE 1149.1, and SWD is accessible via dedicated SWCLK/SWDIO pins mapped to GPIO pins PA0 and PA1. Both interfaces support full breakpoint, watchpoint, and memory inspection capabilities through TI's Code Composer Studio and third-party tools.
LM3S2965-EQC50-A2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- Stellaris® ARM® Cortex®-M3S 2000
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Programmable:
- Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- CANbus, I2C, IrDA, Microwire, QEI, SPI, SSI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 56
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.25V ~ 2.75V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2965-EQC50-A2 FAQ
1.How can I place an order for LM3S2965-EQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2965-EQC50-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 LM3S2965-EQC50-A2 reliable?
The price and inventory of LM3S2965-EQC50-A2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM3S2965-EQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2965-EQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2965-EQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2965-EQC50-A2?
LM3S2965-EQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2965-EQC50-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 LM3S2965-EQC50-A2?
For technical support, including LM3S2965-EQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2965-EQC50-A2 requirements.
6.How does Aetrix verify that LM3S2965-EQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2965-EQC50-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 LM3S2965-EQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2965-EQC50-A2?
All LM3S2965-EQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2965-EQC50-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 LM3S2965-EQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S2965-EQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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