I am working on 8051. I want access 512k of sram as (external memory).but 8051 has only 16 adddress lines. then how can i access that? Please suggest me .. regards ramesh.
Look up "Far Memory" and "XDATA Banking" in the Manual
use the Philips MX series, it is all built in (no software overhead) Erik
... or the Dallas 80c390. Up to 16MB of XRAM (and code, too)
If u can use the paging technique,like u configure some 8 port I/O's as page select signals and then take each page to be 64Kbytes, u can access the 512Kbytes using the 8051. Regards, Rajesh