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3、783NSHPC16040., ,.Intel88044(CPU),ZilogSuper8(DMA),MotorolaMC68CH11(E2promA/D)WDC65C124()1.31.2.3.4.5.AT89S51DS18B203LED 2.12.1.1A/DA/D2.1.2 DS18B202.22.1AT89S51DS18B203LEDQQ,2.1 2.2.1 AT89S512.2.2 3LEDP0P2P2.5P2.6P2.72.2.3DS18B20DALLAS912DS18B20DS18B203.05.5V912 DS18B203PR358SOIC2.2QQ,2.2 DS18B2064
4、ROM848856CRCDS18B20THTLDS18B20RAMEERAMRAM82.3234THTL5DS18B20351TMDS18B20DS18B200R1R0 LSB MSBTH1TL2CRCTMR1R0111112.3 DS18B202.1DS18B202.1 DS18B20R1R0/MS00993.750110187.510113751112750RAM678198CRCDS18B2016120.0625LSBS0S12DS18B20RAMTHTLTTHTTLDS18B2064ROMCRCROM56CRCDS18B20CRCROMDS18B20DS18B20DS18B20ROM1
5、 DS18B202 ROM DS18B20 ROM 2.22.2 ROM Read ROM(ROM)33HMatch ROM(ROM)55HSkip ROM(ROMCCHSearch ROM(ROM)F0HAlarm search()ECH3 2.3 2.3 Write Scratchpad()4EHRead Scratchpad()BEHCopy Scratchpad()48HConvert Temperature()44HRecall EPROM()B8HRead Power supply()B4H 4 (time slots)DS18B20(1) QQ,2.4 2.4to(480us)t
6、lDS18B2015-60usDS18B20t2(60-240 us)(2) 2.5.1 0 2.5.2 1t o5-15-2to15usDSl820t o15-60us02.5.112.5.221us(3) 2.6tol ust1t1t 2t 2to15ust 2t o60us120us(C)2.6 DSl820 2.7 DSl820DSl820ROM48ROM DS18B20ROM(33H)DS18B20DS18B20ROM(55H)64(DS18B2048)DS18B20ROMMOV A,#0CCH2.7ROMDS18B20ROM DS18B20DS18B20ROM44HDS18B201sTA/D 2.3 2.3.1 QQ,2.8 2.82.8LED2.82.3.2 P0LEDP2NPN2.92.9 2.3.3 DS18B20DS18B202.10DS18B201232.11