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LPC1751 概述

The LPC1751 are ARM Cortex-M3 based microcontrollers for embedded applications featuring a high level of integration and low power consumption. The ARM Cortex-M3 is a next generation core that offers system enhancements such as enhanced debug features and a higher level of support block integration.

The LPC1751 operate at CPU frequencies of up to 100 MHz. The ARM Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with separate local instruction and data buses as well as a third bus for peripherals. The ARM Cortex-M3 CPU also includes an internal prefetch unit that supports speculative branching

LPC1751 特性

• ARM Cortex-M3 processor, running at frequencies of up to 100 MHz
• ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC)
• Up to 32 kB on-chip flash programming memory
• Up to 8 kB of SRAM
• In-System Programming (ISP) and In-Application Programming (IAP)
• Eight channel General Purpose DMA controller (GPDMA)
• Multilayer AHB matrix interconnect provides a separate bus for each AHB master
• Split APB bus allows high throughput with few stalls between the CPU and DMA
• USB 2.0 full-speed device controller
• Four UARTs with fractional baud rate generation
• CAN 2.0B controller with one channel
• SPI controller with synchronous, serial, full duplex communication
• Two SSP controllers with FIFO and multi-protocol capabilities
• Two I2C-bus interfaces supporting fast mode with a data rate of 400 kbit/s
• 52 General Purpose I/O (GPIO) pins with configurable pull-up/down resistors
• 12-bit Analog-to-Digital Converter (ADC) with conversion rates up to 200 kHz
• Four general purpose timers/counters
• One motor control PWM with support for three-phase motor control
• Quadrature encoder interface that can monitor one external quadrature encoder
• One standard PWM/timer block with external count input
• Real-Time Clock (RTC)
• WatchDog Timer (WDT)
• ARM Cortex-M3 system tick timer, including an external clock input option
• Standard JTAG test/debug interface
• Integrated PMU (Power Management Unit)
• Four reduced power modes
• Single 3.3 V power supply (2.4 V to 3.6 V)
• One external interrupt input configurable as edge/level sensitive