LM3S5956-IQR80-C0T Texas Instruments Integrated Circuit (Other) In Stock
LM3S5956-IQR80-C0T is a 32-bit ARM Cortex-M3 microcontroller from Texas Instruments Stellaris series running up to 80 MHz with 256 KB Flash and 64 KB SRAM. Features Ethernet MAC, USB OTG, CAN, and multiple UARTs with industrial temperature rating. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM3S5956-IQR80-C0T?
- ARM Cortex-M3 core at 80 MHz with 256 KB Flash and 64 KB SRAM for complex embedded applications
- Integrated Ethernet MAC with MII/RMII interface enabling direct network connectivity in industrial control designs
- USB OTG and CAN 2.0 peripherals in a single chip reduce external component count for multi-protocol industrial nodes
What is LM3S5956-IQR80-C0T used for?
LM3S5956-IQR80-C0T is suited for industrial automation controllers, networked sensor nodes, and building management systems requiring simultaneous Ethernet, USB, and CAN connectivity. Its 80 MHz Cortex-M3 core handles real-time control loops alongside TCP/IP stack execution without needing an external network processor. Factory automation equipment and HVAC controllers leverage its integrated peripherals to reduce PCB complexity and BOM cost.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
What are equivalent replacements for LM3S5956-IQR80-C0T?
Compatible alternatives and drop-in replacements for LM3S5956-IQR80-C0T:
Frequently Asked Questions
What core speed, Flash, and SRAM does LM3S5956-IQR80-C0T provide for real-time control tasks?
The LM3S5956-IQR80-C0T runs an ARM Cortex-M3 core at up to 80 MHz with 256 KB of on-chip Flash program memory and 64 KB of SRAM. At 80 MHz the core achieves 1.25 DMIPS/MHz, delivering 100 DMIPS for compute-intensive tasks such as PID control loops, FFT-based motor control algorithms, and simultaneous multi-protocol communication handling.
What communication interfaces does LM3S5956-IQR80-C0T integrate and how do they benefit industrial network designs?
The device integrates an Ethernet MAC with MII interface, USB 2.0 OTG, CAN 2.0B controller, and multiple UARTs and SPI ports. Having Ethernet, CAN, and USB on-chip eliminates at least 3 external controller ICs, reducing BOM cost significantly. Industrial field bus systems, smart energy meters, and building automation gateways use this peripheral set to bridge CAN-based sensor networks to Ethernet-connected SCADA systems.
What temperature range and qualification does LM3S5956-IQR80-C0T carry for industrial deployments?
The 'I' suffix specifies the industrial temperature grade covering -40°C to +85°C operation, suitable for factory floor controllers, outdoor enclosures, and transportation equipment. The device operates from a 2.97 V to 3.63 V supply core with 5 V tolerant I/O pins, enabling direct interfacing to legacy 5 V industrial sensors without external level shifters.
When is LM3S5956-IQR80-C0T preferred over STM32F103 for an industrial Ethernet application?
LM3S5956-IQR80-C0T integrates an Ethernet MAC directly on-chip, whereas STM32F103 requires an external ENC28J60 or LAN8720 PHY controller, adding 2 to 4 additional ICs. For applications needing deterministic 10/100 Mbps Ethernet with CAN and USB in a single 80-pin QFP package, this integration simplifies certification testing (single-chip EMC profile) and shrinks board area by up to 30% compared to a multi-chip STM32F103 plus external Ethernet solution.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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