Hi,
I am using RM57L843 Microcontroller. In our project we use RTC NVRAM, MRAM and NAND flash memory. ALL this memory are uses CS2, CS3 and CS4 Respectively. Additionally In our project we require BU-64843-102
Mill Bus It also require chip select. Is any other possible to connect all this devices RTC NVRAM, MRAM, NAND flash memory and BU-64843-102 Mill Bus to RM57L843 ?
Hi Veerappan,
I don't have knowledge on the device "BU-64843-102"
If it is an async RAM and you don't have any chip selects to connect to it, then you can try demux, just like below
In above schematic of TMS570HDK, we can connect nA pin to nB1 or nB2 or nB3 based on chip selection lines. So, just connect two of your async memories chip selects directly to the controller but give one chip select line to the demux.
I am telling you something like this
Here CS4 is connected to a demux and demux output is connected to a NAND and BU-64843, so if i want to communicate with NAND using CS4 then first i will give corresponding selection line value and then i will access the address range of CS4 and similarly for BU-64843 as well.
Hope this will helpful. But remember it's just a theory, so please try a demo and confirm the working before actual production.
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Thanks & regards,
Jagadish.
