LM3S9B81-IBZ80-C5T

Microcontrollers Overview

The LM3S9B81-IBZ80-C5T is a Stellaris microcontroller based on the ARM Cortex-M3 processor core. It operates at a maximum clock frequency of 80 MHz and delivers 100 DMIPS performance. The device integrates 256 KB of single-cycle Flash memory and 96 KB of single-cycle SRAM. It features an internal ROM loaded with StellarisWare software, a Direct Memory Access Controller (DMA), and up to 65 general-purpose I/Os. Connectivity includes a 10/100 Ethernet MAC and PHY, three CAN controllers, USB 2.0 OTG, three UARTs, two I2C modules, and two SSI modules. Analog peripherals consist of two 10-bit ADCs with 16 channels and three analog comparators.

Microcontrollers Feature Summary

• Integrated 10/100 Ethernet MAC and PHY for network connectivity
• Supports multiple communication protocols including CAN, USB OTG, UART, I2C, and SSI
• Includes External Peripheral Interface (EPI) for parallel bus expansion
• Features μDMA controller for efficient data transfer management

Microcontrollers Applications

• Industrial control systems requiring robust communication interfaces
• Networked embedded devices utilizing Ethernet connectivity
• Automotive applications leveraging CAN bus capabilities
• Data acquisition systems using integrated ADC and DMA features

Microcontrollers Procurement Notes

Verify component authenticity through authorized Texas Instruments distributors or certified partners. Confirm package integrity and pin alignment against the 108-ball BGA specification. Ensure storage conditions comply with moisture sensitivity level requirements prior to soldering. Validate that the specific ordering suffix matches the required temperature range and package variant for your design implementation.

Microcontrollers Selection Notes

Select this component when high-performance processing combined with extensive peripheral integration is required. The inclusion of an on-chip Ethernet PHY simplifies board layout compared to external PHY solutions. Consider the available GPIO count and memory size relative to application complexity. Evaluate the necessity of specific serial interfaces like CAN or USB OTG to ensure optimal resource utilization within the Stellaris family.

Microcontrollers Part Context

This part belongs to the Stellaris LM3S series of microcontrollers designed for cost-sensitive, high-volume applications. It utilizes the ARM Cortex-M3 architecture to provide efficient code execution and low power consumption. The device is part of a broader ecosystem supported by StellarisWare software libraries, facilitating rapid development for various industrial and consumer electronics markets.

Microcontrollers Replacement Considerations

Consult official Texas Instruments documentation for verified cross-reference part numbers within the Stellaris family. Ensure any substitute maintains compatibility with the 108-ball BGA footprint and electrical specifications.