To MCS51 microcontroller, for example, using parasite power supply mode, P1 1 Kou take to ensure the single bus clock cycle in an effective DS18B20 to provide adequate current, can be a MOSFET, and the 89C51 of the P1 0 to complete the bus pull-up, When the DS18B20 write-memory operation and the temperature A/D conversion operation, the bus must have a strong pull, pull-open time up to 10 μs. Way of using parasite power supply VDD and the GND terminal are grounded.

ds18b20\STARTUP.A51
.......\ds18b20.plg
.......\ds18b20.c
.......\STARTUP.LST
.......\ds18b20.lnp
.......\ds18b20.M51
.......\display.c
.......\STARTUP.OBJ
.......\display.__i
.......\display.LST
.......\display.OBJ
.......\Last Loaded ds18b20.DBK
.......\ds18b20.DSN
.......\ds18b20.PWI
.......\ds18b20_Uv2.Bak
.......\ds18b20.Uv2
.......\ds18b20.LST
.......\ds18b20.OBJ
.......\ds18b20_Opt.Bak
.......\ds18b20.Opt
ds18b20

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