LM3S2939-IQC50-A2T

Product Overview

• Category: Microcontroller
• Use: Embedded systems, Internet of Things (IoT) devices
• Characteristics: High-performance, low-power consumption, integrated peripherals
• Package: LQFP-100
• Essence: ARM Cortex-M3 core microcontroller
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Core: ARM Cortex-M3
• Clock Speed: 50 MHz
• Flash Memory: 256 KB
• RAM: 64 KB
• Operating Voltage: 2.7V - 3.6V
• I/O Pins: 53
• Communication Interfaces: UART, I2C, SPI, USB
• Analog-to-Digital Converter (ADC): 12-bit, 8 channels
• Timers: 4 x 32-bit, 2 x 16-bit
• PWM Outputs: 6
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM3S2939-IQC50-A2T microcontroller has a total of 100 pins in the LQFP package. The pin configuration is as follows:

• Pins 1-4: Ground (GND)
• Pins 5-8: Power Supply (VDD)
• Pins 9-10: External Oscillator Input (OSCIN/XTAL1)
• Pins 11-12: External Oscillator Output (OSCOUT/XTAL2)
• Pins 13-14: Reset (RESETn)
• Pins 15-18: General-Purpose I/O (GPIO)
• Pins 19-20: Analog Reference Voltage (AREF+/-)
• Pins 21-28: Analog Input/Output (AIN0-AIN7)
• Pins 29-32: UART Communication (UART0)
• Pins 33-36: Inter-Integrated Circuit (I2C) Communication (I2C0)
• Pins 37-40: Serial Peripheral Interface (SPI) Communication (SSI0)
• Pins 41-44: Universal Serial Bus (USB) Communication (USB0)
• Pins 45-48: Pulse Width Modulation (PWM) Output (PWM0)
• Pins 49-52: Timer Inputs/Outputs (TIMER0)
• Pins 53-56: Timer Inputs/Outputs (TIMER1)
• Pins 57-60: General-Purpose I/O (GPIO)
• Pins 61-64: General-Purpose I/O (GPIO)
• Pins 65-68: General-Purpose I/O (GPIO)
• Pins 69-72: General-Purpose I/O (GPIO)
• Pins 73-76: General-Purpose I/O (GPIO)
• Pins 77-80: General-Purpose I/O (GPIO)
• Pins 81-84: General-Purpose I/O (GPIO)
• Pins 85-88: General-Purpose I/O (GPIO)
• Pins 89-92: General-Purpose I/O (GPIO)
• Pins 93-96: General-Purpose I/O (GPIO)
• Pins 97-100: General-Purpose I/O (GPIO)

Functional Features

• High-performance ARM Cortex-M3 core for efficient processing
• Low-power consumption for extended battery life in portable devices
• Integrated peripherals such as UART, I2C, SPI, and USB for versatile communication options
• 12-bit ADC for accurate analog-to-digital conversion
• Multiple timers and PWM outputs for precise timing and control

Advantages and Disadvantages

Advantages

• High-performance processing capabilities
• Low-power consumption for energy-efficient designs
• Integrated peripherals reduce the need for external components
• Versatile communication interfaces enable connectivity with other devices
• Accurate analog-to-digital conversion for precise measurements

Disadvantages

• Limited flash memory and RAM compared to higher-end microcontrollers
• LQFP package may require more space on the PCB compared to smaller packages
• Limited number of I/O pins may restrict the number of connected devices

Working Principles

The LM3S2939-IQC50-A2T microcontroller operates based on the ARM Cortex-M3 core architecture. It executes instructions stored in its flash memory, processes data, and controls various peripherals to perform desired functions. The microcontroller communicates with external devices through its integrated UART, I2C, SPI, and USB interfaces. It can also read analog signals using its built-in ADC and generate PWM signals for precise control.

Detailed Application Field Plans

The LM3S2939-IQC50-A2T microcontroller finds applications in various fields, including:

1. Industrial automation: Controlling machinery and monitoring sensors in