LM3S5C31-IQC80-A1T

Microcontrollers Overview

The LM3S5C31-IQC80-A1T is an ARM Cortex-M3 microcontroller from the Stellaris family, manufactured by Texas Instruments. It operates at a maximum clock frequency of 80 MHz and features 512 KB of single-cycle Flash memory and 64 KB of SRAM. The device includes a 16-channel, 12-bit ADC with a sample rate of one million samples per second. It supports multiple communication interfaces including CAN 2.0 A/B, USB 2.0 Device, three UARTs, two I2C modules, and two SSI modules. The unit is housed in a 100-pin LQFP package and functions within an industrial temperature range of -40°C to 85°C.

Microcontrollers Feature Summary

• Integrated advanced motion control capabilities featuring six advanced PWM outputs, four fault inputs for low-latency shutdown, and two Quadrature Encoder Inputs (QEI).
• Includes an External Peripheral Interface (EPI) providing an 8/16/32-bit dedicated parallel bus for connecting external peripherals such as SDRAM, SRAM, Flash, FPGAs, and CPLDs.
• Features a lower-power battery-backed hibernation module containing a Real-Time Clock (RTC) and system control logic.

Microcontrollers Applications

• Motion and energy applications requiring precise PWM control and encoder feedback.
• Systems utilizing external high-speed memory or FPGA expansion via the EPI.
• Industrial controllers requiring robust analog signal acquisition through the high-speed ADC.

Microcontrollers Procurement Notes

Verify component authenticity through authorized channels due to potential supply chain variations. Confirm package integrity and pin alignment against the 100-LQFP specification before integration. Ensure firmware compatibility with StellarisWare libraries if utilizing onboard ROM functions. Check for specific revision markings that may affect peripheral configuration registers.

Microcontrollers Selection Notes

Select this component when high-performance analog conversion and complex motion control are required simultaneously. The inclusion of USB OTG and CAN interfaces makes it suitable for networked industrial nodes. Consider the 512 KB Flash capacity for extensive application code storage without external memory dependencies.

Microcontrollers Part Context

This part belongs to the Texas Instruments Stellaris LM3S series, specifically designed for embedded control applications. It utilizes the ARM Cortex-M3 core architecture, offering a balance of processing power and peripheral integration. The series is known for its on-chip StellarisWare software library support, simplifying development cycles for standard peripherals.

Microcontrollers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-compatibility with other LM3S5xxx variants based on specific memory size and peripheral requirements.