LM3S3748-IQC50-A0 Texas Instruments 32bit MCU

LM3S3748-IQC50-A0 Overview

The Stellaris® LM3S3748 microcontroller is based on the ARM® Cortex™-M3 controller core operating at up to 50 MHz, with 128 kB flash, 64 kB SRAM, a 32-ch DMA, and ROM preloaded with the StellarisWare Driver Library and BootLoader. The LM3S3748 also features real-time industrial connectivity, with USB 2.0 Full Speed Host/Device, 2 SSI / SPI controllers, 2 I2C interfaces, and 2 UARTs. The LM3S3748 microcontroller also features advanced motion control features, including 8 motion-control PWM outputs with dead-band, a quadrature encoder input for precise position monitoring, and a fault protection input for low-latency shutdown. The microcontroller also features intelligent analog capability, including 2 analog comparators and 8 channels of highly accurate 10-bit analog-to-digital conversion - with the ability to sample at speeds of 1M samples per second. Finally, the LM3S3748 microcontroller provides a 24-bit systick timer, 4 32-bit or 8 16-bit general-purpose timers, a watchdog timer, a battery-backed hibernation module with RTC and 256 bytes of non-volatile state-saving memory, a low drop-out voltage regulator so that only one supply voltage is required, brown-out reset, power-on reset controller, and up to 61 GPIOs.

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Features

32-bit ARM® Cortex™-M3 50-MHz processor core with System Timer (SysTick), integrated Nested Vectored Interrupt Controller (NVIC), Memory Protection Unit (MPU), and Thumb-2 instruction set
Full-featured debug solution with debug access via JTAG and Serial Wire interfaces, and IEEE 1149.1-1990 compliant Test Access Port (TAP) controller
128 KB single-cycle flash and 64 KB single-cycle SRAM
Internal ROM loaded with StellarisWare® software
Lower-power battery-backed Hibernation module with Real-Time Clock
ARM PrimeCell® 32-channel configurable μDMA controller
3-61 GPIOs (depending on configuration) with programmable control for GPIO interrupts and pad configuration
ARM FiRM-compliant Watchdog Timer ; plus four General-Purpose Timer Modules (GPTM), each of which provides two 16-bit timers/counters and can be configured to operate independently
10-bit Analog-to-Digital Converter (ADC) with eight analog input channels and a sample rate of one million samples/second
Two fully programmable 16C550-type UARTs with IrDA support
Two Synchronous Serial Interface (SSI) modules, supporting operation for Freescale SPI, MICROWIRE, or Texas Instruments synchronous serial interfaces
Two Inter-Integrated Circuit (IC) Interface modules, providing Standard (100 Kbps) and Fast (400 Kbps) transmission and support for sending and receiving data as either a master or a slave
Universal Serial Bus (USB) Controller with USB 2.0 full-speed (12 Mbps) and low-speed (1.5 Mbps) operation, 8 endpoints, and USB Host mode
Two integrated analog comparators configurable for output to initiate an ADC sample sequence, drive an output pin or generate an interrupt
Four PWM generator blocks, each with one 16-bit counter, two PWM comparators, a PWM signal generator, a dead-band generator, and an interrupt/ADC-trigger selector; four PWM fault inputs to promote low-latency shutdown
Quadrature Encoder Interface (QEI) featuring position integrator to track encoder position and velocity capture using built-in timer
Industrial-range 100-pin RoHS-compliant LQFP package