Dram controller with page mode function

Abstract

Abstract PURPOSE:To effectively use a page mode function, and to shorten access time by selecting a first generator when all bits coincide based on the result of comparison. CONSTITUTION:The respective bits, to which row address information RA(n) in a present cycle, outputted from a controlling means 1, and the row address information RA(n-1) of a previous cycle, latched by an address latch circuit 2, correspond, are compared in an address comparison circuit 3 respectively, and when all the bits coincide based on the result of this comparison, the first generator 4 is selected. In addition, the controlling means 1 outputs address information and an address control signal, the inverse of AS in response to a cycle finish signal from either the first and second generators 4, 5. Thus, because the page mode function is effectively used, the access time can be shortened.

Inventors

• 👤 Yoshiki Hashimoto

Bibliographic Details