As part of a scrolling LED message project, I was planning on storing character data and message data on a RAM chip. Why RAM? I will probably be getting the controller to access (read and write) to the memory very often, in which case, a EEPROM would probably wear out pretty fast. The ability to store graphical animations is also more likely to be possible using RAM as this would wear an EEPROM out even faster!
My question is: does anyone have any experience in interfacing a SRAM or NVRAM chip to a controller.
I was assuming that it simply requires its address pins to be set to the required address (11 bits for a 2KB chip, 13 bits for 8KB) and then its control line pins (read/write, output enable, chip select etc.) to be configured and then the data appears as eight parallel bit on its IO port.
Does anyone know if this is correct?
In particular, I am thinking of using a 6116P-3 (2KB) (Datasheet: <A href='http://www.futurlec.com/Memory/6116P-3.shtml' Target=_Blank>External Web Link</a>) or 6264P-12 (8KB) (Datasheet: <A href='http://www.futurlec.com/Memory/6264P-12.shtml' Target=_Blank>External Web Link</a>). The datsheets I was able to aquire look like VERY poor scanned copies but from what I can make out, they seem to be very alike to Maxim's NVRAMs.
Thanks in advance for any advice.
<b><i>ylp88 </b> </i>
My question is: does anyone have any experience in interfacing a SRAM or NVRAM chip to a controller.
I was assuming that it simply requires its address pins to be set to the required address (11 bits for a 2KB chip, 13 bits for 8KB) and then its control line pins (read/write, output enable, chip select etc.) to be configured and then the data appears as eight parallel bit on its IO port.
Does anyone know if this is correct?
In particular, I am thinking of using a 6116P-3 (2KB) (Datasheet: <A href='http://www.futurlec.com/Memory/6116P-3.shtml' Target=_Blank>External Web Link</a>) or 6264P-12 (8KB) (Datasheet: <A href='http://www.futurlec.com/Memory/6264P-12.shtml' Target=_Blank>External Web Link</a>). The datsheets I was able to aquire look like VERY poor scanned copies but from what I can make out, they seem to be very alike to Maxim's NVRAMs.
Thanks in advance for any advice.
<b><i>ylp88 </b> </i>