DS2484

DS2484 Single-Channel 1-Wire Master with Adjustable Timing and Sleep Mode General Description The DS2484 is an I2C-to-1-WireM bridge device that interfaces directly to standard (100kHz max) or fast (400kHz max) I2C masters to perform protocol conversion between the I2C master and any downstream 1-Wire slave devices. Relative to any attached 1-Wire slave device, the DS2484 is a 1-Wire master. Internal, user-adjustable timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. In addition, the 1-Wire bus can be powered down under software control. The dual-voltage operation allows different operating voltages on the I2C and 1-Wire side. Strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs and sensors. When not in use, the DS2484 can be put in sleep mode where power consumption is minimal. Applications Printers Medical Instruments Industrial Sensors Cell Phones Benefits and Features S I2C Host Interface Supports 100kHz and 400kHz I2C Communication Speeds S Standard and Overdrive 1-Wire Communication Speeds S Adjustable 1-Wire Timing for tRSTL, tMSP, tW0L, and tREC0 S 1-Wire Port Can Be Powered Down Under Software Control S Supports Power-Saving Sleep Mode (SLPZ Pin), Where the 1-Wire Port is in High Impedance S I2C Operating Voltages: 1.8V ±5%, 3.3V ±10%, and 5.0V +5/-10% S Built-In Level Translator: 1-Wire Operating Voltage from 1.8V -5% to 5.0V ...