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          基于LPC1311設計的Cortex-M3 CPU USB接

          作者: 時間:2012-04-14 來源:網(wǎng)絡 收藏
          NXP /13/42/43 是基于 的微控制器,具有高度集成和低功耗,可用于嵌入式應用。工作頻率高達72MHz,單電源2.0V-3.6V工作,內(nèi)置了嵌套中斷向量控制器(NVIC),多達32KB閃存,多達8KB數(shù)據(jù)存儲器,設備,快速模式I2C總線接口,一個UART,四個通用定時器和多達42個GPIO引腳。主要應用在電子測量,照明,告警系統(tǒng)和白色家電。本文介紹了/13/42/43主要特性,方框圖,時鐘發(fā)生方框圖以及自供電接口框圖和總線供電接口框圖。

          The /13/42/43 are ARM based microcontrollers for embedded applications featuring a high level of integration and low power consumption. The ARM is a next generation core that offers system enhancements such as enhanced debug features and a higher level of support block integration.

          The LPC1311/13/42/43 operate at frequencies of up to 72 MHz. The ARM Cortex-M3 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 LPC1311/13/42/43 includes up to 32 kB of flash memory, up to 8 kB of data memory, USB Device (LPC1342/43 only), one Fast-mode Plus I2C-bus interface, one UART, four general purpose timers, and up to 42 general purpose I/O pins.

          LPC1311/13/42/43主要特性和優(yōu)勢:

          ARM Cortex-M3 processor, running at frequencies of up to 72 MHz.

          ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC).

          32 kB (LPC1343/13)/16 kB (LPC1342)/8 kB (LPC1311) on-chip flash programming memory.

          8 kB (LPC1343/13)/4 kB (LPC1342/11) SRAM.

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          關鍵詞: LPC1311 Cortex-M3 CPU USB

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