at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 88

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

6221G–ATARM–31-Jan-08
nected could be unintentionally driven at boot time, and electrical conflicts between SPI output
pins and the connected devices may appear.
To assure correct functionality, it is recommended to plug in critical devices to other pins.
Table 13-12
are driven during the boot sequence for a period of less than 1 second if no correct boot program
is found.
For the DataFlash driven by the SPCK signal at 1 MHz, the time to download 4096 bytes is
reduced to 200 ms.
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.
Table 13-12. Pins Driven during Boot Program Execution
Peripheral
SPI0
SPI0
SPI0
SPI0
SPI0
PIOC
PIOC
DBGU
DBGU
contains a list of pins that are driven during the boot program execution. These pins
Pin
MOSI
MISO
SPCK
NPCS0
NPCS1
NANDCS
NAND Ready Busy
DRXD
DTXD
AT91SAM9260
PIO Line
PIOC11
PIOC14
PIOC13
PIOB14
PIOB15
PIOA1
PIOA0
PIOA2
PIOA3
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