iButton and Memory

iButton® devices are small, durably packaged modules with globally unique digital addresses. An iButton device uses a stainless steel can as an electronic communications interface. The iButton can has a data contact, called the lid, and a ground contact, called the base. Each of the iButton contacts is connected to the silicon chip inside. The iButton base includes a flange to simplify attaching the iButton device to just about anything. Enhanced by our 1-Wire® communications protocol, iButton devices provide the ability to deliver or record data where other products cannot, such as in very harsh environments. An iButton device is ideal for any application where information needs to follow a person or object, such as temperature and humidity data logging, access control, asset tracking, and electronic cash (eCash) transactions.

Analog Devices’ memory products consist of specialized memory featuring the 1-Wire^® interface, as well as static RAM and nonvolatile RAM controllers. Our 1-Wire memory devices combine memory, mixed-signal, and secure authentication functions through a single-contact serial interface. Our NVSRAM devices feature fast reads/writes and the endurance of SRAM with the convenience of nonvolatile multiple memory configurations and package options. Our NVRAM controllers convert CMOS RAM into nonvolatile memory while optionally integrating time keeping functions.