VAR-320SBC Reference Guide
Copyright © 2008 Variscite
4.7. 1-Wire
The 1-Wire bus master interface controller is designed to receive and transmit 1-Wire bus data
and provides complete control of the 1-Wire bus through eight-bit commands.
The 1-Wire bus serial operation uses an open-drain, wired-AND bus structure that allows multiple
devices to drive the bus lines and to communicate status on events such as arbitration, wait
states, and error conditions.
Signal
Pin
number
Type Description
GPI
O
ONE_WIRE P1-64 I/O Open-drain 1-Wire bidirectional data bus.
0_2
20