1. A method for accessing a special mode register of a memory device comprising a single mode register, an extended mode register, and a plurality of special mode registers comprising the special mode register, the special mode register comprising information about at least one of the memory device and operational characteristics of the memory device, the method comprising: detecting a command and a bank address combination to access the special mode register, wherein the bank address combination is different from a bank address combination used to access the single mode register or the extended mode register, wherein one or more address bits specify one of the plurality of special mode registers to be accessed by the command; executing the command by driving data from the special mode register onto a data bus; and self-terminating the command by automatically placing the data bus in a high impedance state some time after driving the data.