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.
The peripheral complement of the LPC1769/68/67/66/65/64 includes up to 512 kB of flash memory, up to 64 kB of data memory, Ethernet MAC, USB Device/Host/OTG interface, 8-channel general purpose DMA controller, 4 UARTs, 2 CAN channels, 2 SSP controllers, SPI interface, 3 I2C-bus interfaces, 2-input plus 2-output I2S-bus interface, 8-channel 12-bit ADC, 10-bit DAC, motor control PWM, Quadrature Encoder interface, four general purpose timers, 6-output general purpose PWM, ultra-low power Real-Time Clock (RTC) with separate battery supply, and up to 70 general purpose I/O pins.
The LPC1769/68/67/66/65/64 are pin-compatible to the 100-pin LPC236x ARM7-based microcontroller series.
LPC17xx 主要特性:
ARM Cortex-M3 processor, running at frequencies of up to 100 MHz (LPC1768/67/66/65/64) or of up to 120 MHz (LPC1769). A Memory Protection Unit (MPU) supporting eight regions is included.
ARM Cortex-M3 built-in...