8.5 Device Addressing

The first nibble of the command byte corresponds to the device address. All CryptoMemory® devices will respond to the device address $B. A specific device may be set to respond to another value ($0 to $F) in addition to $B by setting this value in the second nibble of the Device Configuration Register (DCR) in the configuration memory. The DCR is set to $FF at the Microchip factory and thus will respond to device address $B and $F unless the DCR is modified. For a device to respond only to $B, the DCR must be set to $B as well.