LM3S1B21-IQC80-C3 Texas Instruments Integrated Circuit (Other) In Stock
LM3S1B21-IQC80-C3 is a 32-bit ARM Cortex-M3 microcontroller from Texas Instruments. Runs at up to 80 MHz with 256KB flash, 96KB SRAM, 67 GPIO lines, integrated ADC, DMA, and USB. Ideal for industrial control and embedded systems in LQFP-100 package.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 100
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S1B21-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
Key Features
- 32-bit ARM Cortex-M3 core running up to 80 MHz for high-performance embedded processing
- 256KB on-chip flash and 96KB SRAM supporting complex firmware and data-intensive applications
- 67 configurable GPIO lines with integrated DMA channels for flexible peripheral management
- Integrated 12-bit ADC and USB controller enabling analog acquisition and host/device connectivity
- RoHS-compliant LQFP-100 package (1.40mm height) suitable for space-constrained industrial designs
Applications
The LM3S1B21-IQC80-C3 is well-suited for industrial automation, motor control, and building management systems that demand reliable 32-bit processing with rich peripheral integration. Its USB interface and multi-channel DMA make it a strong choice for data-logging instruments and human-machine interface (HMI) panels. Embedded designers also deploy this device in medical monitoring equipment and smart energy meters where low-profile packaging and high I/O density are critical.
Specifications
| 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) | 98304 |
| ROM (words) | 262144 |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3S1B21-IQC80-C3:
Frequently Asked Questions
What is the maximum CPU clock frequency of the LM3S1B21-IQC80-C3?
The LM3S1B21-IQC80-C3 ARM Cortex-M3 core operates at up to 80 MHz, providing ample processing headroom for real-time control loops, DSP-style computations, and multi-tasking RTOS workloads in industrial and embedded applications.
How much flash and RAM does the LM3S1B21-IQC80-C3 include?
The device integrates 256 KB of on-chip flash for program storage and 96 KB of SRAM for runtime data, stack, and heap—sufficient for mid-complexity firmware with a lightweight RTOS such as FreeRTOS or TI-RTOS.
What package does the LM3S1B21-IQC80-C3 use and what are its key physical dimensions?
It comes in a 100-pin LQFP (JESD-30 code S-PQFP-G100) with a maximum height of 1.40 mm and conforms to JEDEC MS-026BED outline, making it compatible with standard PCB footprints used across the Stellaris/Tiva C microcontroller family.
What communication and analog peripherals are available on this microcontroller?
The LM3S1B21-IQC80-C3 includes an integrated USB controller, multiple UART, SPI, and I2C interfaces, a 12-bit ADC, and DMA channels. With 67 I/O lines it supports dense peripheral connectivity for sensor-rich industrial designs.
Is the LM3S1B21-IQC80-C3 RoHS compliant and what is its end-of-life status?
Yes, the part is marked Pb-free (RoHS compliant). The YTEOL value is currently 0, indicating no imminent scheduled end-of-life. Buyers should verify current availability with authorised Texas Instruments distributors for long-term procurement planning.
Related Guides
TPS54160DGQR Selection Guide: How to Choose a 60V Step-Down Buck Converter
Complete selection guide for the TPS54160DGQR 60V/1.5A step-down converter. Compare specs, alternatives, and sourcing options for industrial and automotive designs.
May 20, 2026
LMV932MM Dual Low-Voltage CMOS Op-Amp: Application Design Guide
Complete application design guide for the LMV932MM dual rail-to-rail CMOS op-amp: supply decoupling, RRIO design rules, stability, and recommended circuits for 1.8V–5.5V battery-powered systems.
May 20, 2026
TL084CN Equivalent and Replacements: JFET-Input Quad Op-Amp Comparison Guide
Compare TL084CN with TL074, LF347, and LM324 quad op-amps. Pin-compatible equivalents, key specs, and when to choose each for your analog design.
May 20, 2026
TPS386000RGPR Quad Voltage Supervisor: Selection and Sourcing Guide (2025)
Compare TPS386000RGPR with TPS386040RGPR, TPS3700, and TPS3823 voltage supervisors. Key specs, threshold programming, watchdog options, and sourcing tips.
May 20, 2026
Why Buy from FindMyChip
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”