LM3S9971-IQC80-C3 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S9971-IQC80-C3 is a 32-bit ARM Cortex-M3 microcontroller running up to 80 MHz with 256 KB flash, 96 KB SRAM, 72 GPIO pins, ADC, PWM, DMA, and Ethernet MAC in a 100-pin LQFP package. It integrates a full CAN 2.0B controller and USB OTG interface for rich connectivity in industrial and automotive applications. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 100
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S9971-IQC80-C3 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM3S9971-IQC80-C3?
- 32-bit ARM Cortex-M3 core at up to 80 MHz with 256 KB flash and 96 KB SRAM, providing ample compute and storage for real-time control firmware
- Integrated 10/100 Ethernet MAC with MII/RMII interface and USB OTG 2.0 FS, enabling dual-protocol wired connectivity without external bridge chips
- 72 GPIO pins with DMA, 12-bit ADC, PWM channels, CAN 2.0B, I2C, SPI, and UART peripherals in a 100-pin LQFP package for comprehensive embedded system integration
What is LM3S9971-IQC80-C3 used for?
LM3S9971-IQC80-C3 targets industrial automation controllers, networked sensor nodes, and embedded HMI panels that require concurrent Ethernet, USB, and CAN bus communication. Its 80 MHz Cortex-M3 core with hardware DMA supports real-time data acquisition from 12-bit ADC channels while simultaneously handling multi-protocol communication stacks. The 100-pin LQFP footprint fits standard PCB designs for motor drives, building controllers, and factory automation gateways requiring broad I/O and connectivity.
What are the specifications of LM3S9971-IQC80-C3?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Clock Frequency-Max | 16.384MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G100 |
| Number of I/O Lines | 72 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | FLATPACK, LOW PROFILE, FINE PITCH |
| ROM Programmability | FLASH |
| Speed | 80MHz |
| Supply Voltage-Max | 1.365V |
| Supply Voltage-Min | 1.235V |
| Supply Voltage-Nom | 1.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| HTS Code | 8542.31.00.25 |
Where can I find the LM3S9971-IQC80-C3 datasheet?
LM3S9971-IQC80-C3 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S9971-IQC80-C3?
Compatible alternatives and drop-in replacements for LM3S9971-IQC80-C3:
Frequently Asked Questions
What is the maximum clock frequency and memory configuration of the LM3S9971-IQC80-C3?
The LM3S9971-IQC80-C3 operates at up to 80 MHz with an internal PLL from a 6 MHz to 16.384 MHz external crystal. It provides 256 KB of on-chip flash for program storage and 96 KB of SRAM for runtime data, sufficient for a complete TCP/IP stack plus application firmware in a single chip. The hardware DMA controller with 32 channels moves data between peripherals and SRAM at bus speed, relieving the Cortex-M3 core for application logic.
Which industrial communication interfaces are built into LM3S9971-IQC80-C3 for factory automation designs?
LM3S9971-IQC80-C3 integrates a 10/100 Ethernet MAC with MII interface, USB OTG 2.0 Full-Speed, CAN 2.0B controller, up to 3 UART ports, 2 SSI/SPI interfaces, and 2 I2C buses — all accessible through 72 GPIO pins on the 100-pin LQFP package. This peripheral set allows a single-chip design to bridge a CAN 2.0B field bus at 1 Mbit/s to an Ethernet network at 100 Mbit/s without external protocol converter ICs, reducing BOM cost and board area by at least 30% versus a multi-chip approach.
When is LM3S9971-IQC80-C3 a practical choice over a higher-MHz Cortex-M4 for a networked sensor hub?
LM3S9971-IQC80-C3 is the right choice when the design already requires Ethernet, USB, and CAN 2.0B together in a 100-pin LQFP at a lower cost than a Cortex-M4 device with the same peripheral set. Its 80 MHz Cortex-M3 core delivers roughly 100 DMIPS, more than enough for a networked sensor hub polling 12-bit ADC channels at 1 MS/s and streaming data over 10/100 Ethernet. If floating-point DSP is not needed, the simpler M3 pipeline reduces power consumption by approximately 20% compared to equivalent M4F solutions at the same clock frequency.
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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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