Connecting External Flash IC

The EM510W platform includes the fd. object. For this to work, an external flash IC must be connected to the EM510.

As shown on the schematic diagram below, this flash IC is ATMEL AT45DB041. Since the EM510 has a dedicatedflash memory configuration , the flash IC will be used exclusively by the fd. object and provide 1MB of storage.

em510_to_flash_ic

For the fd. object to work, it must be enabled first. Do this through Project Settings -> Customize dialog.

note_warning-wt

DO NOT enable fd. object unless you actually have the flash IC attached. When the fd. object is enabled, the EM510 will attempt to detect the flash IC presence. That is, the EM510 will try to access the flash through the SPI interface. This means that there will be signals on GPIO4 (CS), GPIO3 (CLK), and GPIO1 (DI/DO). Flash IC detection may interfere with the operation of your device (if you have something else connected to these GPIOs).