LM3S1R26-IQR80-C1 Texas Instruments Integrated Circuit (Other) In Stock
LM3S1R26-IQR80-C1 is a 32-bit ARM Cortex-M3 microcontroller from Texas Instruments with up to 32 MHz clock, integrated ADC, DMA channels, and 33 I/O lines in a 64-pin LQFP package. It supports on-chip program ROM with 8-bit width and RoHS-compliant Pb-free construction for embedded control applications. Available from global distributors with worldwide shipping for industrial and consumer embedded systems.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 64
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S1R26-IQR80-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 LM3S1R26-IQR80-C1?
- 32-bit ARM Cortex-M3 CPU running up to 32 MHz with DMA channels for efficient peripheral data transfers without CPU intervention
- Integrated ADC and 33 I/O lines in a 64-pin LQFP (MS-026BCD) package for mixed-signal sensor and control interfaces
- On-chip program ROM provides boot-loader and in-system programming capability without external flash memory
- RoHS-compliant Pb-free construction with 64-pin LQFP footprint suitable for standard SMT reflow assembly
What is LM3S1R26-IQR80-C1 used for?
LM3S1R26-IQR80-C1 targets embedded control applications such as industrial automation nodes, HVAC system controllers, and smart appliance interfaces where a 32-bit Cortex-M3 core with integrated ADC and DMA provides deterministic real-time performance. The 33 available I/O lines support diverse peripheral connectivity including SPI, I2C, UART, and GPIO-driven relay or indicator outputs in a single-chip design. Its 64-pin LQFP package is straightforward to route on a 4-layer PCB, making it a practical choice for mid-complexity embedded boards requiring both analog sensing and digital communication.
What are the specifications of LM3S1R26-IQR80-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-G64 |
| Number of I/O Lines | 33 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | QFP64,.47SQ,20 |
| Package Shape | SQUARE |
| Package Style | FLATPACK |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified |
| RAM (bytes) | 49152 |
| 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 LM3S1R26-IQR80-C1 datasheet?
LM3S1R26-IQR80-C1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S1R26-IQR80-C1?
Compatible alternatives and drop-in replacements for LM3S1R26-IQR80-C1:
Frequently Asked Questions
How many I/O lines does LM3S1R26-IQR80-C1 provide and what peripheral interfaces can they support?
The LM3S1R26-IQR80-C1 offers 33 I/O lines that can be configured as GPIO or mapped to serial peripherals such as UART, SPI, and I2C, enabling simultaneous connection of multiple sensors, communication buses, and control outputs. For a typical industrial node design, 8 lines might drive relay outputs, 8 handle SPI-connected displays or memory, and the remaining 17 serve as ADC inputs or digital status lines, covering a full embedded application without external I/O expanders.
Does LM3S1R26-IQR80-C1 include DMA channels, and how do they benefit data-intensive applications?
Yes, LM3S1R26-IQR80-C1 includes DMA channels that allow peripheral-to-memory transfers at rates up to the 32 MHz bus clock without CPU intervention, freeing the Cortex-M3 core for computation. In an ADC logging application sampling at 1 kHz across 8 channels, DMA can move 8 samples per millisecond to RAM while the CPU processes the previous buffer, reducing effective CPU load by more than 50% versus polled transfers.
What package does LM3S1R26-IQR80-C1 use and how does it compare to 48-pin LM3S variants in PCB layout?
LM3S1R26-IQR80-C1 uses a 64-pin LQFP (MS-026BCD) package with a 10 mm x 10 mm body and 0.5 mm pin pitch, providing 16 more pins than a 48-pin LQFP counterpart for additional I/O and peripheral connections. This larger package requires a slightly bigger PCB keep-out zone but enables routing all 33 I/O lines plus power pins on a 4-layer board without via-in-pad techniques, simplifying layout for prototypes and low-volume production.
Is LM3S1R26-IQR80-C1 still in production, and what migration options exist for new designs?
LM3S1R26-IQR80-C1 has a YTEOL value of 0, suggesting it may be at or near end-of-life, so new designs should evaluate the TM4C123 or TM4C129 Cortex-M4 series as functionally richer successors with longer production commitments of at least 10 years. Existing designs requiring the LM3S1R26 should source buffer inventory, as distributor stock may be limited; industrial programs typically buffer at least a 3-year supply when a part approaches end-of-life status.
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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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