Changes between Version 1 and Version 2 of at90usb


Ignore:
Timestamp:
May 13, 2012, 10:15:27 PM (12 years ago)
Author:
pulkomandy
Comment:

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  • at90usb

    v1 v2  
    44
    55http://sourceforge.net/projects/dfu-programmer/files/ seems to be the right tool to flash it.
     6
     7= Reserved pins =
     8On the dev board :
     9 * PF0 = tempertature sensor. May or may not be a problem.
     10 * PF3 = resistors to sense power supply.
     11 * PE0/PE1 = on board flash chip select
     12 * PE2 = HWB button.
     13 * PD7..4 = LEDs
     14 * PB7..5 and PE5/4 = Joystick
     15
     16Leaves us with :
     17 * PA 0..7
     18 * PB 0..4
     19 * PC 0..7
     20 * PD 0..3
     21 * PE 6..7
     22 * PF 1,2,4..7
     23
     2433 free I/O pins.
     25Some more can be used in some cases.