LM3S102-IRN20-C2 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S102-IRN20-C2 is a 32-bit ARM Cortex-M3 Stellaris microcontroller running at up to 8 MHz with 18 I/O lines, PWM channels, and DMA support in a 28-pin SOIC package. It targets entry-level 32-bit embedded control applications with a compact footprint. Available from stock worldwide at competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S102-IRN20-C2 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 LM3S102-IRN20-C2?
- 32-bit ARM Cortex-M3 core clocked at up to 8 MHz enabling deterministic real-time embedded control
- DMA controller supporting background data transfers to free the CPU for higher-priority tasks
- PWM output channels providing direct motor or power stage drive without external PWM generators
- 18 configurable I/O lines supporting UART, SPI, I2C, and GPIO peripheral interfaces
- 28-pin SOIC plastic/epoxy package offering a compact and cost-effective 32-bit MCU solution
What is LM3S102-IRN20-C2 used for?
The LM3S102-IRN20-C2 is suited for entry-level 32-bit embedded control applications such as simple motor controllers, industrial sensor nodes, and smart power switches that require Cortex-M3 performance at up to 8 MHz with PWM and DMA capability. Its 18 I/O lines and standard serial peripheral interfaces support small HMI panels, relay controllers, and building automation actuators in a compact 28-pin SOIC form factor. The DMA controller enables efficient background data movement for UART or SPI communication links in cost-sensitive industrial designs.
What are the specifications of LM3S102-IRN20-C2?
| YTEOL | 0 |
| Has ADC | NO |
| Bit Size | 32 |
| Clock Frequency-Max | 8MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | R-PDSO-G28 |
| Number of I/O Lines | 18 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| ROM Programmability | FLASH |
| Speed | 20MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 3V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.31.00.25 |
Where can I find the LM3S102-IRN20-C2 datasheet?
LM3S102-IRN20-C2 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S102-IRN20-C2?
Compatible alternatives and drop-in replacements for LM3S102-IRN20-C2:
Frequently Asked Questions
What is the maximum clock frequency of the LM3S102-IRN20-C2, and how does that compare to higher-speed Stellaris variants?
The LM3S102-IRN20-C2 operates at up to 8 MHz, which is lower than the 50 MHz or 80 MHz clock speeds of higher-tier Stellaris devices. This positions it as a low-power, cost-effective Cortex-M3 option for simple control tasks that do not require high computational throughput.
How many I/O lines does the LM3S102-IRN20-C2 provide, and which serial interfaces can be mapped to them?
The LM3S102-IRN20-C2 provides 18 configurable I/O lines that can be mapped to UART, SPI, and I2C peripherals in addition to standard GPIO. This count is sufficient for small sensor interface boards, relay control modules, and simple HMI panels in the 28-pin SOIC package.
For a compact motor drive application, how do the PWM channels in the LM3S102-IRN20-C2 simplify the design?
The onboard PWM channels in the LM3S102-IRN20-C2 generate variable duty-cycle waveforms directly from the 8 MHz Cortex-M3 core without requiring an external PWM IC, reducing BOM cost and PCB area for small brushed motor controllers, LED dimmers, and solenoid drivers.
Is the LM3S102-IRN20-C2 still in production, and what should designers consider for new projects?
The LM3S102-IRN20-C2 has a YTEOL value of 0, indicating it is at or near end-of-life. Designers starting new projects should evaluate current-generation Tiva C Series or MSP432 devices that offer higher clock frequencies, more I/O, and longer production commitments than the 8 MHz LM3S102.
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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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