Semiconductor memory device

1. A semiconductor memory device, comprising:

at least one memory area; and

a register area for at least one of receiving, storing, and providing frequency information selected from at least one of the group consisting of a present operating frequency, a clock frequency, and a frequency range for operating the semiconductor memory device, said register area storing the frequency information in binary code, said register area having at least one register bit, and each possible one of said present operating frequency and said clock frequency being assigned a given combination of values of said register bit.

2. The semiconductor memory device according to claim 1 , wherein said register area receives the frequency information externally.

3. The semiconductor memory device according to claim 1 , wherein said register area receives the frequency information internally.

4. The semiconductor memory device according to claim 1 , wherein:

said memory area has circuit components, circuit configurations, and functions; and

said memory area at least one of adapts and configures said circuit components, said circuit configurations, said functions, and operation of said circuit components, operation of said circuit configurations, and operation of said functions to at least one of said present operating frequency and said clock frequency dependent upon the frequency information present in said register area.

5. The semiconductor memory device according to claim 4 , wherein at least one of signal propagation times in said memory area and temporal coordination of operation of said memory area is at least one of adapted and configured dependent upon the frequency information in said register area.

6. The semiconductor memory device according to claim 4 , wherein, based upon the frequency information in said register area, said circuit components, said circuit configurations, said functions, and operation of said circuit components, operation of said circuit configurations, and operation of said functions, are at least one of adapted and configured with regard to electrical power consumption.

7. The semiconductor memory device according to claim 6 , wherein, according to an adapted power consumption, one of power provision and generation in said at least one memory area and said register area is at least one of adapted and configured dependent upon the frequency information in said register area.

8. The semiconductor memory device according to claim 7 , including a number of power generator elements at least one of adapting and configuring the power provision and generation dependent upon the frequency information in said register area.

9. The semiconductor memory device according to claim 8 , wherein:

a relatively larger number of said power generator elements are activated at relatively higher operating frequencies; and

a relatively smaller number of said power generator elements are activated at relatively lower operating frequencies.

10. The semiconductor memory device according to claim 4 , wherein, based upon the frequency information in said register area, said circuit components, said circuit configurations, said functions of said memory area, and operation of said circuit components, operation of said circuit configurations, and operation of said functions of said memory area, are at least one of adapted and configured with regard to electrical power consumption.

11. The semiconductor memory device according to claim 4 , wherein, based upon the frequency information in said register area, said circuit components, said circuit configurations, said functions, and operation of said circuit components, operation of said circuit configurations, and operation of said functions, are at least one of adapted and configured toward a relatively higher power consumption at relatively higher operating frequencies and toward a relatively lower power consumption at relatively lower operating frequencies.

12. The semiconductor memory device according to claim 4 , wherein, based upon the frequency information in said register area, said circuit components, said circuit configurations, said functions of said memory area, and operation of said circuit components, operation of said circuit configurations, and operation of said functions of said memory area, are at least one of adapted and configured toward a higher power consumption at higher operating frequencies and toward a lower power consumption at lower operating frequencies.

13. The semiconductor memory device according to claim 1 , including a register, said register area being part of said register.

14. The semiconductor memory device according to claim 1 , including a mode register, said register area being part of said mode register.

15. The semiconductor memory device according to claim 1 , wherein said at least one memory area and said register area is an SDRAM.

16. The semiconductor memory device according to claim 1 , wherein said at least one memory area and said register area is a DDR-SDRAM.

17. A semiconductor memory device, comprising:

at least one memory area; and

a register area for at least one of receiving, storing, and providing frequency information selected from at least one of the group consisting of a present operating frequency, a clock frequency, and a frequency range for operating the semiconductor memory device, said register area storing the frequency information in binary code, said register area having a plurality of register bits, and each possible one of said present operating frequency and said clock frequency being assigned a given combination of values of said register bits.

18. The semiconductor memory device according to claim 17 , wherein said plurality of register bits is two register bits.

19. The semiconductor memory device according to claim 17 , wherein said plurality of register bits is three register bits.

20. A semiconductor memory device, comprising:

at least one memory area; and

a register area for at least one of receiving, storing, and providing frequency information selected from at least one of the group consisting of a present operating frequency, a clock frequency, and a frequency range for operating the semiconductor memory device;

said at least one memory area receiving the frequency information externally.

21. A semiconductor memory device, comprising:

at least one memory area; and

a register area for at least one of receiving, storing, and providing frequency information selected from at least one of the group consisting of a present operating frequency, a clock frequency, and a frequency range for operating the semiconductor memory device;

said at least one memory area receiving the frequency information internally.

22. The semiconductor memory device according to claim 21 , including an internal frequency determining device determining one of said present operating frequency and said clock frequency and writing said one of said present operating frequency and said clock frequency to said register area.

23. A semiconductor memory device, comprising:

at least one memory area; and

a register area connected to said at least one memory area and adapted to at least one of receive, store, and provide frequency information selected from at least one of the group consisting of a present operating frequency, a clock frequency, and a frequency range for operating said at least one memory area, said register area storing the frequency information in binary code, said register area having at least one register bit, and each possible one of said present operating frequency and said clock frequency being assigned a given combination of values of said register bit.

24. A semiconductor memory device, comprising:

at least one memory area;

a register area adapted to at least one of receive, store, and provide frequency information selected from at least one of the group consisting of a present operating frequency, a clock frequency, and a frequency range for operating said at least one memory area; and

a controller for at least one of receiving and transmitting commands and addresses externally, said a controller connected to said at least one memory area and said register area; and said register area storing the frequency information in binary code, said register area having at least one register bit, and each possible one of said present operating frequency and said clock frequency being assigned a given combination of values of said register bit.

25. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area;

storing the frequency information in binary code; and

assigning a combination of values of at least one register bit to each provided possible frequency selected from the group consisting of the operating frequency and the clock frequency.

26. The method according to claim 25 , which further comprises at least one of:

adapting at least one of circuit components, circuit configurations, functions, and operation of one of the semiconductor memory device and the memory area to the current operating frequency; and

configuring the at least one of the circuit components, the circuit configurations, the functions, and the operation of one of the semiconductor memory device and the memory area according to the frequency information.

27. The method according to claim 26 , which further comprises at least one of adapting and configuring at least one of signal propagation times and temporal coordination of the operation of the memory area based upon the frequency information.

28. The method according to claim 26 , which further comprises at least one of adapting and configuring electrical power consumption of the circuit components, the circuit configurations, the functions, and the operation of the memory area based upon the frequency information.

29. The method according to claim 26 , which further comprises at least one of adapting and configuring electrical power consumption of the circuit components, the circuit configurations, the functions, and the operation of the memory area based upon the frequency information in the register area.

30. The method according to claim 29 , which further comprises performing at least one of the adaptation and configuration toward a relatively higher power consumption at relatively higher operating frequencies and toward a relatively lower power consumption at relatively lower operating frequencies.

31. The method according to claim 29 , which further comprises, according to an adapted power consumption, at least one of adapting and configuring at least one of power provision and power generation based upon the frequency information.

32. The method according to claim 31 , which further comprises, according to the frequency information in the register area, at least one of adapting and configuring at least one of the power provision and the power generation through a number of activatable power generator elements in the register area.

33. The method according to claim 32 , which further comprises activating a relatively larger number of power generator elements at relatively higher operating frequencies and activating a relatively smaller number of power generator elements at relatively lower operating frequencies.

34. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area;

storing the frequency information in binary code; and

assigning a combination of values of at least two register bits to each provided possible frequency selected from the group consisting of the operating frequency and the clock frequency.

35. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area;

storing the frequency information in binary code; and

assigning a combination of values of at least three register bits to each provided possible frequency selected from the group consisting of the operating frequency and the clock frequency.

36. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area; and

receiving the frequency information within the memory area from external to the memory area.

37. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area; and

writing the frequency information to the memory area from external to the memory area.

38. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area; and

internally receiving the frequency information within the memory area.

39. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area; and

writing the frequency information from within the register area to the memory area.

40. A method for operating a semiconductor memory device, which comprises:

providing at least one memory area with a register area;

storing frequency information relating to at least one information selected from a group consisting of a current operating frequency, a clock frequency and a frequency range for operating the semiconductor memory device in the register area of the memory area; and

determining one of the current operating frequency and the clock frequency of the semiconductor memory device and writing the one of the current operating frequency and the clock frequency to the register area.