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Texas Instruments LM3S2965-IQC50-A2
- Part No.:
- LM3S2965-IQC50-A2
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
LM3S2965-IQC50-A2.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:5,720
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Product details
Overview
LM3S2965-IQC50-A2 from Texas Instruments is a 32-bit ARM Cortex-M3 microcontroller with 256 KB flash, 64 KB SRAM, integrated CAN 2.0B controller, 12-bit ADC (up to 1 MSPS), and hibernation module supporting RTC and battery-backed memory. It operates at 50 MHz and targets motor control and industrial automation systems requiring deterministic real-time response.
For engineers reviewing the LM3S2965-IQC50-A2 datasheet, LM3S2965-IQC50-A2 pinout, LM3S2965-IQC50-A2 application, or LM3S2965-IQC50-A2 equivalent, key selection criteria include its integrated CAN interface, hibernation power management, 12-bit ADC sampling rate, and QFP-100 package compatibility with industrial temperature range operation.
Technical Context
The LM3S2965-IQC50-A2 implements the ARM Cortex-M3 core with NVIC, SysTick, and MPU for deterministic interrupt handling and memory protection. It integrates dual CAN 2.0B controllers with message objects and FIFO support, enabling robust automotive and industrial bus communication.
Its analog subsystem includes a 12-bit, 1-MSPS ADC with eight sample sequencers and hardware averaging, plus an internal temperature sensor. The hibernation module provides RTC, battery-backed RAM, and wake-up from deep-sleep modes using external pins or RTC match events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 running at 50 MHz - enables deterministic real-time execution with Thumb-2 instruction set and low-latency interrupt response. |
| Flash Memory | 256 KB - sufficient for complex firmware with bootloader, application code, and field-upgradeable sections. |
| SRAM | 64 KB - supports large data buffers, stack/heap allocation for multitasking RTOS environments. |
| ADC Resolution & Speed | 12-bit, up to 1 MSPS - suitable for precision motor current sensing and closed-loop control feedback sampling. |
| CAN Interface | Dual CAN 2.0B controllers - allows redundant bus architecture or separate control/data networks in industrial machinery. |
| Hibernation Mode Current | 1.7 µA typical - enables battery-powered remote sensors or edge nodes with multi-year operation on coin cells. |
| Operating Temperature | –40°C to +85°C - qualified for deployment in uncontrolled industrial enclosures and outdoor equipment. |
Pinout & Package
LM3S2965-IQC50-A2 is housed in a 100-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, RoHS-compliant, and rated for industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDC | Power supply inputs | Dedicated domains for digital logic (VDD), analog circuitry (VDDA), and core voltage regulator (VDDC) - enable noise isolation for ADC and PLL stability. |
| PA0–PA7, PB0–PB7, etc. | GPIO banks A–G | Configurable 5-V-tolerant I/O with programmable slew rate, pull-up/down, and alternate function mapping - supports UART, SSI, I²C, and PWM reuse on shared pins. |
| CAN0RX / CAN0TX | CAN0 transceiver interface | Dedicated differential input/output for CAN0 bus - requires external transceiver (e.g., SN65HVD230) for physical layer compliance. |
| CAN1RX / CAN1TX | CAN1 transceiver interface | Second independent CAN channel - enables dual-bus topology without software arbitration overhead. |
| HIBRST / HIBACK | Hibernation module control | Asynchronous reset and acknowledge signals for entering/exiting hibernation - allow wake-up without full system reset. |
| RTCCLK / RTCSW | Real-time clock source | Supports external 32.768 kHz crystal or internal oscillator - maintains timekeeping during hibernation with battery backup. |
Key Features
| Feature | Design Value |
|---|---|
| Dual CAN 2.0B controllers | Each with 32 message objects and dedicated FIFO - reduces CPU load during high-throughput bus traffic and supports prioritized message transmission. |
| Hibernation module with RTC | Retains 2 KB of SRAM and maintains accurate time via 32.768 kHz crystal - enables ultra-low-power monitoring without external timing ICs. |
| 12-bit, 1-MSPS ADC | Eight independent sample sequencers with hardware averaging - allows simultaneous sampling of multiple motor phase currents with post-processing filtering. |
| ARM Cortex-M3 with MPU | Memory Protection Unit enforces privilege separation between firmware layers - critical for safety-certifiable industrial control applications. |
| Integrated USB 2.0 device controller | Full-speed (12 Mbps) interface with on-chip PHY - eliminates need for external USB transceiver in diagnostic or configuration interfaces. |
Applications
| Industrial Motor Control | Building Automation System |
|---|---|
Use Scenario: Closed-loop control of 3-phase BLDC motors in HVAC compressors with real-time current sensing and thermal monitoring. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, managing CAN-based actuator commands, and synchronizing ADC sampling to PWM periods. Use Value: Deterministic 50 MHz Cortex-M3 execution and dual CAN interfaces enable coordinated multi-axis motion while maintaining <1 µs interrupt latency for fault detection. | Use Scenario: Central controller for lighting, HVAC, and security subsystems across commercial buildings using distributed CAN bus nodes. IC Role / Device Role / Timing Role: CAN network master coordinating schedule-driven operations and aggregating sensor data from remote nodes. Use Value: Integrated dual CAN controllers eliminate external bus controllers, reducing BOM count and PCB area while supporting redundant bus topologies for uptime-critical infrastructure. |
| Remote Monitoring Node | Programmable Logic Controller (PLC) I/O Module |
Use Scenario: Battery-powered environmental sensor node deployed in inaccessible locations, transmitting temperature/humidity via CAN to gateway. IC Role / Device Role / Timing Role: Low-power system-on-chip managing sensor acquisition, hibernation scheduling, and CAN message queuing. Use Value: 1.7 µA hibernation current and integrated RTC allow multi-year operation on CR2032 cells without external power management ICs. | Use Scenario: Modular I/O expansion unit for DIN-rail PLCs, acquiring analog/digital signals and communicating over CANopen. IC Role / Device Role / Timing Role: Fieldbus interface processor handling protocol stack, signal conditioning, and watchdog supervision. Use Value: Hardware-accelerated CAN message object management offloads CPU, enabling >500 messages/sec throughput while reserving cycles for diagnostics and safety checks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320F28027FPTT | 32-bit C28x DSP core, 60 MHz, 32 KB flash, no CAN, 12-bit 4 MSPS ADC | Optimized for high-speed motor control math (e.g., FOC), lacks native CAN and hibernation | Select when computational throughput > communication features; requires external CAN transceiver and RTC IC. |
| STM32F103VET6 | ARM Cortex-M3, 72 MHz, 512 KB flash, 64 KB SRAM, single CAN 2.0B, no hibernation module | Broad ecosystem support but lacks dual CAN and battery-backed RTC functionality | Choose for cost-sensitive designs where single CAN suffices and external RTC is acceptable. |
Compared with TMS320F28027FPTT and STM32F103VET6, the LM3S2965-IQC50-A2 uniquely combines dual CAN, hibernation with RTC, and industrial temperature rating in a single chip - eliminating external components required by alternatives for equivalent industrial connectivity and power management.
Availability
LM3S2965-IQC50-A2 is available at Aetrix Electronics and suitable for industrial motor control, building automation systems, remote monitoring nodes, and PLC I/O modules requiring stable component supply and long-term lifecycle assurance.
Supply support for LM3S2965-IQC50-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 since 1930.
The Stellaris LM3S family was designed specifically for cost-sensitive, real-time industrial control applications requiring integrated communication peripherals, low-power operation, and deterministic interrupt response - with the LM3S2965-IQC50-A2 targeting CAN-based distributed automation systems.
FAQ
What is the maximum operating frequency of the LM3S2965-IQC50-A2?
The LM3S2965-IQC50-A2 operates at a maximum system clock frequency of 50 MHz, derived from its internal PLL that accepts input from an external crystal or oscillator. This frequency is specified under industrial temperature conditions (–40°C to +85°C) and ensures deterministic timing for real-time control loops. The LM3S2965-IQC50-A2 does not support overclocking beyond this rated speed.
Does the LM3S2965-IQC50-A2 include an integrated CAN transceiver?
No, the LM3S2965-IQC50-A2 integrates dual CAN 2.0B protocol controllers but requires external CAN transceivers (e.g., SN65HVD230 or TJA1042) to drive the physical bus lines. Its CAN0RX/CAN0TX and CAN1RX/CAN1TX pins provide CMOS-level signals compliant with ISO 11898-1, not differential bus voltages. The LM3S2965-IQC50-A2 handles message filtering, arbitration, and error handling in hardware.
What is the purpose of the hibernation module in the LM3S2965-IQC50-A2?
The hibernation module in the LM3S2965-IQC50-A2 enables ultra-low-power operation by retaining 2 KB of SRAM, maintaining RTC time via a 32.768 kHz crystal, and supporting wake-up from external pins or RTC match events. It draws only 1.7 µA typical in hibernate mode, making the LM3S2965-IQC50-A2 suitable for battery-powered remote sensors where multi-year operation is required without external power management ICs.
How many ADC channels does the LM3S2965-IQC50-A2 support, and what is their resolution?
The LM3S2965-IQC50-A2 features a single 12-bit successive-approximation ADC with up to 16 external input channels and an internal temperature sensor. It supports simultaneous sampling across multiple channels using eight independent sample sequencers, with hardware averaging up to 64 samples per conversion. The ADC achieves up to 1 MSPS aggregate throughput, and its design meaning lies in precise motor current measurement and closed-loop feedback control within industrial motor drives.
Is the LM3S2965-IQC50-A2 pin-compatible with other Stellaris LM3S devices?
The LM3S2965-IQC50-A2 uses a 100-pin LQFP package with a specific pinout defined in its datasheet (SPMS062I), and it is not universally pin-compatible with other LM3S devices. While some GPIO and peripheral mappings overlap, differences in peripheral integration - such as dual CAN, hibernation signals, and USB PHY pins - mean direct substitution without layout review is not supported. Always verify pin functions against the LM3S2965-IQC50-A2 datasheet before board reuse.
LM3S2965-IQC50-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:
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LM3S2965-IQC50-A2 FAQ
1.How can I place an order for LM3S2965-IQC50-A2 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM3S2965-IQC50-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-IQC50-A2 reliable?
The price and inventory of LM3S2965-IQC50-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-IQC50-A2 is usually 5 days.
3.What payment methods are accepted for LM3S2965-IQC50-A2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM3S2965-IQC50-A2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM3S2965-IQC50-A2?
LM3S2965-IQC50-A2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM3S2965-IQC50-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-IQC50-A2?
For technical support, including LM3S2965-IQC50-A2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM3S2965-IQC50-A2 requirements.
6.How does Aetrix verify that LM3S2965-IQC50-A2 is sourced from the original manufacturer or authorized distributors?
All LM3S2965-IQC50-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-IQC50-A2 meets industry standards.
7.What is the process for return or replacement of LM3S2965-IQC50-A2?
All LM3S2965-IQC50-A2 units undergo pre-shipment inspection (PSI). If there is an issue with LM3S2965-IQC50-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-IQC50-A2 part is unused and in its original packaging.
Return procedure for LM3S2965-IQC50-A2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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