LM3S1P51-IQC80-C3 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S1P51-IQC80-C3 is a 32-bit ARM Cortex-M3 microcontroller running at up to 16 MHz with 67 I/O lines, integrated ADC, DMA, and a 100-pin LQFP package. It features on-chip Flash and SRAM with multiple communication peripherals for embedded control applications. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 100
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S1P51-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 LM3S1P51-IQC80-C3?
- 32-bit ARM Cortex-M3 core running at up to 16 MHz delivering deterministic real-time performance for embedded control
- 67 general-purpose I/O lines on a 100-pin LQFP package providing extensive connectivity for peripheral-rich embedded designs
- Integrated multi-channel ADC enabling direct analog sensor acquisition without external converter ICs
- DMA controller offloading data transfers from the CPU to maximize throughput in communication-intensive applications
- Multiple serial peripherals including UART, SPI, and I2C supporting simultaneous multi-protocol sensor and host interfacing
What is LM3S1P51-IQC80-C3 used for?
The LM3S1P51-IQC80-C3 targets industrial automation, building control, and embedded networking applications where a 32-bit Cortex-M3 at 16 MHz provides the performance needed for real-time sensor fusion and multi-channel I/O management. Its 67 I/O lines and DMA engine make it suitable for motor control modules, HVAC controllers, and factory floor devices that require simultaneous analog sampling and serial communication. The 100-pin LQFP footprint fits mid-complexity control boards in energy management systems and access-control panels.
What are the specifications of LM3S1P51-IQC80-C3?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Boundary Scan | NO |
| Clock Frequency-Max | 16MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G100 |
| Number of I/O Lines | 67 |
| 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) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 24576 |
| ROM (words) | 65536 |
| ROM Programmability | FLASH |
| Speed | 80MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3.3V |
| Supply Voltage-Nom | 3.3V |
| 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) | 30 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER |
| 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 LM3S1P51-IQC80-C3 datasheet?
LM3S1P51-IQC80-C3 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S1P51-IQC80-C3?
Compatible alternatives and drop-in replacements for LM3S1P51-IQC80-C3:
Frequently Asked Questions
What is the maximum clock speed of LM3S1P51-IQC80-C3, and how does it compare to other Stellaris MCUs?
The LM3S1P51-IQC80-C3 runs at a maximum clock frequency of 16 MHz on its 32-bit ARM Cortex-M3 core. Compared to higher-tier Stellaris parts such as the LM3S8962 which runs at 50 MHz, the 16 MHz ceiling suits cost-sensitive designs that prioritize I/O count and peripheral integration over raw throughput, such as building automation and low-speed process control.
How many I/O lines does LM3S1P51-IQC80-C3 provide, and is this sufficient for a 4-axis motor controller?
The LM3S1P51-IQC80-C3 offers 67 general-purpose I/O lines across the 100-pin LQFP package. For a 4-axis stepper motor controller requiring step, direction, and enable signals per axis (12 digital outputs), plus encoder quadrature inputs (8 inputs), limit switches (8 inputs), and an SPI debug interface (4 pins), the 67 I/O lines provide ample headroom with pins remaining for PWM outputs and UART communication.
Does LM3S1P51-IQC80-C3 include DMA, and what data-transfer scenarios does it accelerate?
Yes, LM3S1P51-IQC80-C3 integrates a DMA controller that can transfer data between peripherals and SRAM without CPU involvement. This is particularly useful in ADC sampling loops where DMA fills a sample buffer at full conversion speed while the Cortex-M3 processes previous buffers, and in UART or SPI communication where DMA moves bytes to/from FIFOs at up to 16 MHz bus rates, freeing the CPU for control algorithm execution.
What package does LM3S1P51-IQC80-C3 use, and what design considerations apply for PCB layout?
LM3S1P51-IQC80-C3 uses a 100-pin LQFP (Low-Profile Quad Flat Pack) with a 14 mm x 14 mm body and 0.5 mm pin pitch. At 0.5 mm pitch, PCB layout requires at least a 4-layer stack-up with 3 mil or finer trace-and-space rules on the signal layers, and 100 nF decoupling capacitors should be placed within 2 mm of each VDD pin to suppress supply transients during DMA bursts and ADC conversions.
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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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