i-Button 1-Wire Interface for Driver ID and Sensors

Driver identification, temperature sensors, NVRAM, digital I/O and analog input are quite often used on vehicle and M2M applications. 1-Wire is a device communications bus system designed by Dallas Semiconductor Corp. that provides low-speed data, signaling, and power over a single signal.
At this time, there are approximately 40 1-wire devices available from Dallas Semiconductor Corp. 1-Wire devices can be grouped by their functions into several categories:

‧Identification only
Identification plus temperature
Identification plus temperature logger
Identification plus temperature and humidity logger
Identification plus real time clock
Identification plus NV SRAM or OTP EPROM or EEPROM
Identification plus SHA-1 secure EEPROM

Thanks to the integration of 1-wire interface into acrosser In-Vehicle Computers, so system integrators now can use one simple interface to connect variety devices which are often utilized in telematics applications. Beside the hardware interface, Acrosser also provide software API to write and read data to and from any kind of 1-wire devices.