Atmel AT91SAM7L-STK Uživatelský manuál stáhnout pdf (Strana 33)

AT91SAM7L-EK Evaluation Board User Guide 6-1

6370A–ATARM–15-Feb-08

Section 6

Errata

6.1 Optimal Operation

For optimal operation of the AT91SAM7L microcontroller within a standard application, please apply the

following recommendations:

 Add a 100KΩ pulldown on CLKIN input (pin 125). Take care to place it very close to that pin.

 Change ADVREF load resistor (R118) value to 180.

 Add a 100KΩ pullup on PIO line PC22.

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Atmel AT91SAM7L-STK Uživatelský manuál Strana 33