LM3S1B21-IQC80-C1 Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S1B21-IQC80-C1 is a 32-bit ARM Cortex-M3 microcontroller running at up to 80 MHz with 67 GPIO lines, integrated ADC, and DMA support. It is housed in a 100-pin PQFP package for industrial control applications. Available with commercial-grade qualification for embedded automation designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 100
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S1B21-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 LM3S1B21-IQC80-C1?
- 32-bit ARM Cortex-M3 core at up to 80 MHz delivers deterministic real-time performance for industrial motor control and automation tasks
- 67 GPIO lines plus integrated ADC and DMA channels enable complex peripheral management without external bridge ICs
- 100-pin PQFP (S-PQFP-G100) package provides dense I/O connectivity in a standard PCB footprint for control boards
What is LM3S1B21-IQC80-C1 used for?
The LM3S1B21-IQC80-C1 is designed for industrial control panels, building automation gateways, and embedded motor drive systems that require a 32-bit ARM Cortex-M3 processor with rich on-chip peripherals. With 67 I/O lines and DMA support, it efficiently handles multiple sensor interfaces and actuator outputs simultaneously in real-time control loops. The 100-pin PQFP package suits mid-size control boards where pin count and standard PCB assembly processes are both important.
What are the specifications of LM3S1B21-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 | 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) | 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 LM3S1B21-IQC80-C1 datasheet?
LM3S1B21-IQC80-C1 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S1B21-IQC80-C1?
Compatible alternatives and drop-in replacements for LM3S1B21-IQC80-C1:
Frequently Asked Questions
What is the maximum CPU frequency and core architecture of the LM3S1B21-IQC80-C1?
The LM3S1B21-IQC80-C1 uses a 32-bit ARM Cortex-M3 core running at up to 80 MHz. This frequency allows execution of deterministic real-time control tasks with cycle counts well within 1 µs per interrupt service routine for typical industrial automation workloads.
How many I/O lines does the LM3S1B21-IQC80-C1 provide, and how does it handle high-bandwidth data transfers?
The LM3S1B21-IQC80-C1 provides 67 GPIO lines and includes DMA channels for offloading high-bandwidth data transfers from the CPU. This combination supports simultaneous management of multiple UART, SPI, and ADC streams without stalling the 80 MHz Cortex-M3 core during bulk data moves.
When is the LM3S1B21-IQC80-C1 a better fit than a lower-pin-count Stellaris MCU for an industrial panel design?
For industrial panels requiring more than 48 GPIO lines, the LM3S1B21-IQC80-C1 in a 100-pin PQFP package provides 67 I/O connections while keeping the same ARM Cortex-M3 instruction set and toolchain. Choosing it over a 64-pin or 80-pin variant avoids external GPIO expanders, reducing BOM cost and board complexity in designs with dense sensor and actuator wiring.
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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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