Integrated semiconductor memory, semiconductor memory module and method with adjustment of operating parameters

Integrated semiconductor memory, comprising: - a terminal (IO) for external input and output of a date, - at least a first register (221) for storing a data item, wherein in dependence on the stored date from operating parameters of the integrated semiconductor memory device is adjustable, - in which at the connection (IO) applied date in the first register is writable when a write access to the at least one first register (221) at least, - in which in which at least a first register data stored at the terminal (IO) is output to the external during a read access to the at least one first register (221) - at least one irreversibly programmable memory unit (231, 232) a second register (222), the data in the second register (222) in response to a state of the memory unit (231, 232) is stored, and wherein data stored in response to the in the second register (222) Date of an operating parameter of is adjustable integrated semiconductor memory, - a selection circuit (240), the input side is supplied with the in the at least one first register (221) data stored in the second register and the (222) stored date, - in which the selection circuit (240) of a date in the at least one first register (221) and in the second register selects (222) the stored date, - in which the operating parameters of the integrated semiconductor memory in response to the of the selection circuit (240) selected date is set, and a third register (223) for storing a data indicative of a normal operation or a test and analysis operation, whereby the selection circuit in response to the in the third register (223) selects the stored date.