NXP LPC17xx 32位ARM Cortex-M3 USB接口方案

NXP 公司的LPC17xx(LPC1769/68/67/66/65/64)是32位ARM Cortex-M3 MCU,有多达512KB闪存和64KB SRAM以及以太网, USB 2.0 主/设备/OTG, CAN,是高度集成和低功耗, LPC1768/67/66/65/64 CPU频率高达100MHz,而LPC1769 CPU频率高达120MHz,主要应用在电表,告警系统,照明,白色家电,工业网络和马达控制等.本文主要介绍LPC17xx系列主要特性,方框图, 时钟发生方框图以及各种USB接口框图.

The LPC1769/68/67/66/65/64 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 LPC1768/67/66/65/64 operate at CPU frequencies of up to 100 MHz. The LPC1769 operates at CPU frequencies of up to 120 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.
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