LM3S9971-IQC80-C3T Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S9971-IQC80-C3T is a 32-bit ARM Cortex-M3 microcontroller clocked at up to 16.384 MHz with 72 I/O lines, integrated ADC, DMA, and PWM in a 100-pin LQFP package. Supports multiple serial interfaces for versatile embedded connectivity. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 100
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S9971-IQC80-C3T 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-C3T?
- 32-bit ARM Cortex-M3 core at up to 16.384 MHz delivering efficient real-time processing for embedded control tasks
- 72 general-purpose I/O lines in a 100-pin LQFP package maximizing peripheral connectivity on a single chip
- Integrated PWM channels enabling direct motor and power-stage control without external gate-drive logic
- On-chip DMA controller offloading data movement from ADC and serial peripherals to reduce CPU overhead
What is LM3S9971-IQC80-C3T used for?
The LM3S9971-IQC80-C3T targets industrial automation, networked control nodes, and multi-axis motor-drive systems where a 32-bit processor with abundant I/O and built-in PWM outputs is required. Its 72 I/O lines and 100-pin LQFP footprint make it suitable for panel controllers and HMI interfaces connecting multiple sensors and actuators simultaneously. The device also fits energy-metering and building management applications that need concurrent ADC sampling, serial communications, and real-time event handling on a 3.3 V supply.
What are the specifications of LM3S9971-IQC80-C3T?
| 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-C3T datasheet?
LM3S9971-IQC80-C3T Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S9971-IQC80-C3T?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What clock frequency does the LM3S9971-IQC80-C3T support and how does it affect real-time performance?
The LM3S9971-IQC80-C3T runs its ARM Cortex-M3 core at up to 16.384 MHz. This rate provides enough instruction throughput for PID control loops, CAN and Ethernet protocol stacks, and concurrent ADC sampling across multiple channels while keeping power dissipation low in battery-backed or thermally constrained enclosures.
How many I/O lines does the LM3S9971-IQC80-C3T provide, and what package carries them?
The device offers 72 I/O lines housed in a 100-pin LQFP (S-PQFP-G100) package. This density supports simultaneous connection of multiple UART, SPI, I2C, and ADC signals, making it well suited for panel controllers and sensor hubs that must interface dozens of field devices without an external I/O expander.
When is the LM3S9971-IQC80-C3T a better fit than a smaller 64-pin Cortex-M3 for motor-control PCBs?
When a design requires more than 48 active GPIO lines, on-chip PWM channels for multi-phase motor commutation, and DMA-backed ADC sampling all running concurrently, the 100-pin LM3S9971-IQC80-C3T avoids the pin-count bottleneck of 64-pin variants. Its 72 I/O lines can drive gate signals, read encoder feedback, and service a serial debug port without bus conflicts at 16.384 MHz.
Does the LM3S9971-IQC80-C3T integrate PWM outputs, and what power-conversion stages can it drive?
Yes, the LM3S9971-IQC80-C3T includes integrated PWM channels. These outputs can drive synchronous buck converters, H-bridge motor stages, and three-phase inverter gate drivers directly, reducing external component count. Combined with the on-chip ADC and DMA at 16.384 MHz, the PWM outputs support closed-loop current control with sub-microsecond update latency.
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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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