BOSCH NIB645E14E
BOSCH NIB645E14E
廈門興銳達(dá)自動(dòng)化設(shè)備有限公司 http://www.xrdzidonghua.com
BOSCH NIB645E14E通信接口擔(dān)負(fù)與外圍的串行主機(jī)數(shù)據(jù)交換和支持打印等任務(wù)。串行通訊只需較少的端口就可以實(shí)現(xiàn)單片機(jī)和PC機(jī)的互通,具有無(wú)可比擬的優(yōu)勢(shì)。MSP430 系列都有USART模塊來(lái)實(shí)現(xiàn)串行通信。在本設(shè)計(jì)中,MSP430F149的USART模塊通過RS232串口與外圍的串行主機(jī)通信。系統(tǒng)采用專用電平轉(zhuǎn)換芯片MAX3232來(lái)實(shí)現(xiàn)電平轉(zhuǎn)換,如圖11所示。MAX3232芯片是MAXIM公司生產(chǎn)的電平轉(zhuǎn)換芯片,包含兩路接收器和驅(qū)動(dòng)器,性能可靠。正弦波的來(lái)源采用直接從市電的220 V/50 Hz的正弦波,利用
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