LM3S9B81-IQC80-C1 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S9B81 is a 32-bit ARM Cortex-M3 microcontroller running at 80 MHz with 256 KB Flash, 96 KB SRAM, 65 GPIO pins, and integrated USB, Ethernet, and CAN peripherals. Available in LQFP-100 package, RoHS compliant, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 100
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S9B81-IQC80-C1 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 LM3S9B81-IQC80-C1?
- 32-bit ARM Cortex-M3 core at 80 MHz for high-performance embedded control
- Integrated USB 2.0 Full-Speed OTG, 10/100 Ethernet MAC/PHY, and CAN 2.0B controller
- 256 KB Flash and 96 KB SRAM with 65 configurable GPIO pins and 8-channel DMA
What is LM3S9B81-IQC80-C1 used for?
The LM3S9B81 is well-suited for industrial automation and networked embedded systems requiring simultaneous USB, Ethernet, and CAN connectivity. Its 80 MHz ARM Cortex-M3 core and 256 KB Flash support real-time motor control, building automation gateways, and smart energy metering applications. The integrated ADC channels and DMA controller also make it effective for data acquisition systems demanding low latency and high throughput.
What are the specifications of LM3S9B81-IQC80-C1?
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | NO |
| Clock Frequency-Max | 0.032MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G100 |
| Number of I/O Lines | 65 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP100,.63SQ,20 |
| Package Shape | SQUARE |
| Package Style | FLATPACK |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| RAM (bytes) | 98304 |
| ROM (words) | 262144 |
| ROM Programmability | FLASH |
| Speed | 80MHz |
| Supply Voltage-Max | 1.32V |
| Supply Voltage-Min | 1.2V |
| Supply Voltage-Nom | 1.2V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.25 |
Where can I find the LM3S9B81-IQC80-C1 datasheet?
LM3S9B81-IQC80-C1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S9B81-IQC80-C1?
Compatible alternatives and drop-in replacements for LM3S9B81-IQC80-C1:
Frequently Asked Questions
What is the maximum clock frequency of the LM3S9B81, and how does it impact real-time control tasks?
The LM3S9B81 operates at up to 80 MHz with its ARM Cortex-M3 core, enabling deterministic real-time responses for motor control loops and industrial automation tasks requiring sub-microsecond interrupt latency and 32-bit data processing throughput.
Which communication interfaces are integrated on-chip in the LM3S9B81, and what system designs benefit most?
The LM3S9B81 integrates USB 2.0 Full-Speed OTG, 10/100 Ethernet MAC with PHY, CAN 2.0B, UART, SPI, and I2C interfaces. Multi-protocol gateway designs, building automation controllers, and networked sensor hubs benefit from this combination, eliminating external bridge chips and reducing BOM cost.
How much on-chip Flash and SRAM does the LM3S9B81 provide for embedded firmware?
The LM3S9B81 provides 256 KB of Flash program memory and 96 KB of SRAM, giving firmware engineers sufficient space for a full TCP/IP stack alongside application code, with 8-channel DMA offloading CPU cycles during high-throughput data transfers.
When is LM3S9B81-IQC80-C1 a practical drop-in alternative to external microcontroller plus Ethernet PHY combinations?
LM3S9B81-IQC80-C1 integrates a 10/100 Ethernet MAC and PHY on-chip, so it eliminates the need for a separate PHY IC such as DP83848 in designs requiring network connectivity, reducing PCB area, component count, and power consumption for 3.3 V embedded network nodes.
What operating temperature range does the LM3S9B81-IQC80-C1 support for industrial deployments?
The LM3S9B81-IQC80-C1 is rated for an industrial temperature range of -40°C to 85°C, making it suitable for factory floor automation, outdoor smart metering panels, and HVAC control systems exposed to wide ambient temperature swings without derating core clock or peripheral functionality.
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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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