Datasheet

62
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
Before performing the jump to the application in internal SRAM, all the PIOs and peripherals used in the boot program
are set to their reset state.
PIO Driven during Boot Program Execution
NVM Bootloader Peripheral Pin PIO Line
NAND
EBI CS3 SMC NANDOE PIOD0
EBI CS3 SMC NANDWE PIOD1
EBI CS3 SMC NANDCS PIOD4
EBI CS3 SMC NAND ALE A21
EBI CS3 SMC NAND CLE A22
EBI CS3 SMC Cmd/Addr/Data D[16:0]
SD Card
MCI0 MCI0_CK PIOA17
MCI0 MCI0_D0 PIOA15
MCI0 MCI0_D1 PIOA18
MCI0 MCI0_D2 PIOA19
MCI0 MCI0_D3 PIOA20
SPI Flash
SPI0 MOSI PIOA10
SPI0 MISO PIOA11
SPI0 SPCK PIOA13
SPI0 NPCS0 PIOA14
SPI0 NPCS1 PIOA7
TWI0 EEPROM
TWI0 TWD0 PIOA30
TWI0 TWCK0 PIOA31
SAM-BA Monitor
DBGU DRXD PIOA9
DBGU DTXD PIOA10