Datasheet

133
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
21.5 Hardware and Software Constraints
 SAM-BA boot copies itself in the SRAM and uses a block of internal SRAM for variables and stacks. The
remaining available size for the user code is 122880 bytes for SAM7x512, 57344 bytes for SAM7X256 and 24576
bytes for SAM7X128.
 USB requirements:
 pull-up on DDP
 18.432 MHz Quartz
Table 21-4. User Area Addresses
Device Start Address End Address Size (bytes)
SAM7X512 0x202000 0x220000 122880
SAM7X256 0x202000 0x210000 57344
SAM7X128 0x202000 0x208000 24576
Table 21-5. Pins Driven during Boot Program Execution
Peripheral Pin PIO Line
DBGU DRXD PA27
DBGU DTXD PA28