LM3S5656-IQR80-C3T Texas Instruments Integrated Circuit (Other) In Stock
Texas Instruments LM3S5656-IQR80-C3T is a 32-bit ARM Cortex-M3 microcontroller running at up to 50 MHz, featuring 256 KB Flash, 64 KB RAM, DMA, 10-bit ADC, and 33 GPIO lines in a LQFP-64 package. Designed for industrial control, automation, and networked embedded systems.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 64
- Lifecycle
- OBSOLETE
- Datasheet
- LM3S5656-IQR80-C3T 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 LM3S5656-IQR80-C3T?
- 32-bit ARM Cortex-M3 core clocked up to 50 MHz
- 256 KB on-chip Flash and 64 KB SRAM
- DMA controller supporting multiple transfer channels
- 10-bit ADC with up to 8 input channels
- 33 GPIO lines with configurable interrupt support
- LQFP-64 package enabling standard SMT PCB assembly
What is LM3S5656-IQR80-C3T used for?
The LM3S5656-IQR80-C3T targets industrial automation, building control, and smart energy applications where a 32-bit core with rich connectivity is needed in a cost-effective package. Its DMA and multi-channel ADC make it suitable for sensor fusion and real-time data acquisition systems. Engineers also select it for motor drive controllers and HMI panels requiring UART, SPI, and I2C peripheral connectivity.
What are the specifications of LM3S5656-IQR80-C3T?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Has ADC | YES |
| Bit Size | 32 |
| Clock Frequency-Max | 50MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | S-PQFP-G64 |
| JESD-609 Code | e3 |
| Number of I/O Lines | 33 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | FLATPACK |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| ROM Programmability | FLASH |
| Speed | 80MHz |
| Supply Voltage-Max | 1.32V |
| Supply Voltage-Min | 1.08V |
| Supply Voltage-Nom | 1.2V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | MATTE TIN |
| 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 |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.25 |
Where can I find the LM3S5656-IQR80-C3T datasheet?
LM3S5656-IQR80-C3T Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3S5656-IQR80-C3T?
Compatible alternatives and drop-in replacements for LM3S5656-IQR80-C3T:
Frequently Asked Questions
What core frequency and architecture does LM3S5656-IQR80-C3T use, and how does that compare to 8-bit MCUs in the same price tier?
The LM3S5656-IQR80-C3T uses an ARM Cortex-M3 32-bit core operating at up to 50 MHz, delivering significantly more computational throughput than typical 8-bit MCUs running at 8 MHz to 20 MHz. This makes it practical for tasks like floating-point PID loops or real-time communications stacks that are impractical on 8-bit devices.
How many GPIO and analog input channels does this MCU expose for sensor-heavy industrial designs?
The device provides 33 GPIO lines and a 10-bit ADC with up to 8 input channels. For industrial sensor nodes requiring simultaneous voltage monitoring and digital I/O toggling, this pin budget supports a mix of analog front ends and digital control outputs without an external I/O expander.
What package and pin count should PCB designers plan for when laying out LM3S5656-IQR80-C3T?
The LM3S5656-IQR80-C3T ships in a LQFP-64 package with a 10 mm x 10 mm body and 64 pins on 0.5 mm pitch. This is a standard footprint compatible with most EDA libraries, and its exposed thermal pad aids heat dissipation in power-critical industrial enclosures.
What is the lifecycle status and long-term supply outlook for this Stellaris-family MCU?
Texas Instruments has transitioned the Stellaris LM3S family to NRND (not recommended for new designs) status. Designers starting new projects are encouraged to migrate to the TM4C123 or TM4C129 Tiva C series, which offer pin-compatible 80 MHz ARM Cortex-M4F replacements while maintaining similar 32-bit peripheral architectures.
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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.
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