MCS-51 O n-chip UART.ppt

Unit Seven Automatic Control System Passage Two/MCS-51 O n-chip UART  useful terms Difficult points: use the specialty words to describe MCS-51 O n-chip UART Key points: Requirements: 1. have a good command of the knowledge of MCS-51 On-chip UART 2· can use the special terms to describe MCS-51 On-chip UART Leading in-Revision Talk about microprocessor. (choose two groups of students to do it) Leading in-words review microcontroller feature integrate design programmer transmit A/D converter 10-* oscillator frequency timer data mode programmable exit New words an expressions flexible [ fleks?bl ] a. 灵活的,易弯曲的,柔韧的 UART—Universal Asynchronous [ ei‘si?kr?n?s ] Receiver Transmitter.通用异步接收发送端口 port[ p?:t ]端口 serial port significant [ sig‘nifik?nt ] 【物】有效数字the least (most) significant bit 最（低）高有效位 baud[ b?:d ]波特baud rate 波特速率 register [ ‘red?ist? ]寄存器 mask ~屏蔽寄存器; 选择寄存器; 计时寄存器; 时标寄存器arbitration~ parity[ ‘p?riti ]?奇偶性 embed[ im‘bed ]?v. 嵌入 10-* 10-* MCS-51 Microcontrollers The MCS-51 family contains a flexible set of microcontrollers. These 8-bit embedded controllers have different features such as on-chip program memory, data RAM and some even have integrated A/D converters. One feature that all of the microcontrollers in the MCS-51 family have in common is an integrated UART. About this guide This guide has been designed so that any programmer with basic microcontroller experience can learn how to use the general features of the on-chip UART in a MCS-51 microcontroller. 10-* so that conj. 以便(以致) About this document This document has been created and designed in response to repeated inquires on the usage of the serial port. Working examples have been included and explained to ease the learning process. 10-* document: [ ‘d?kjum?nt ]?n. 文件,公文，资料 ease: [ i:z ]v. 使...安乐,使...安心,减轻,放松 The serial port can operate in 4 modes 10-*  Mode 0 Mode 0: Serial port outputs the shift clock. In this mode, 8 bits are transmitted and received by the same pin, RXD. T