A semiconductor memory device includes an SRAM provided on a chip, the SRAM including an SRAM cell array. A DRAM is provided on the chip, the DRAM including a DRAM cell array. An address input circuit receives an address signal, the address signal having a first portion and a second portion, the first...http://www.google.com.au/patents/US6735141?utm_source=gb-gplus-sharePatent US6735141 - Semiconductor memory device having an SRAM and a DRAM on a single chip
