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how to config upsd3254 32K SRAM?

wdcai
Associate II
Posted on June 25, 2004 at 07:58

how to config upsd3254 32K SRAM?

2 REPLIES 2
wdcai
Associate II
Posted on May 17, 2011 at 12:01

Dear Sir!

I wan to config 32K SARM in 0000h to 7fffh,main flash in 8000h to ffffh (XDATA area) uisng paging method,

How to config CSIOP and other device select signals in 0000h~7fffh? for example, CSIOP is located at 7f00h~7fffh,and other device selected signals are decoded in 7800h~7f00h? when those areas(7800 to 7fff) are accessed? what will happens? the CSIOP and other device siganls have higher priority than SRAM?

Thanks!
wdcai
Associate II
Posted on May 17, 2011 at 12:01

I have knownhow to config, only config rs0 to 0000~7800h is OK!