Microcontrollers that have a USB port and SAM-BA running can then be connected to a PC and programmed via a USB cable using the Atmel SAM-BA PC application. Once the SAM-BA boot software is loaded to Flash memory, the microcontroller will then run the SAM-BA software when powered up. AT91SAM7S256) ĪTSAM3U microcontrollers use the ERASE pin to load SAM-BA (e.g. The SAM-BA boot program can be loaded to the Flash memory of the microcontroller by closing a jumper on the microcontroller board and then powering up the board.Įxamples: AT91SAM7S uses the TST (TEST) pin to load SAM-BA (e.g. Atmel ARM microcontrollers contain a boot program called SAM-BA.
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