1-Wire Serial Memory Products

1-Wire® serial memory products provide EEPROM and EPROM memory arrays that are both powered and operated over the single contact 1-Wire interface.  The 1-Wire interface provides advantages over other industry interfaces such as I²C™ or SPI™ in applications where contacts between the host controller and memory device is limited or must be minimized and/or where factory programmed unique device serialization is required or valuable.  1-Wire devices require a total of two contacts for total device operation compared to four contacts for I²C memory or five contacts for SPI memory.

With unique 64-bit device serial numbers and network capable command protocol, 1-Wire memory devices can be multi-dropped on a common 1-Wire line and operated independently.  1-Wire memory security features vary from SW programmable write protection to low cost, cryptographically secure, bi-directional, authentication which is implemented with the industry standard secure hash algorithm (SHA-1).  The single contact, with ground return, 1-Wire interface can be easily implemented from a spare controller port pin making the implementation cost minimal.

1-Wire Memory Devices