Datasheet

162
8021G–AVR–03/11
ATmega329P/3290P
When the SPI is enabled, the data direction of the MOSI, MISO, SCK, and SS pins is overridden
according to Table 18-1. For more details on automatic port overrides, refer to ”Alternate Port
Functions” on page 69.
Note: 1. See ”Alternate Functions of Port B” on page 72 for a detailed description of how to define the
direction of the user defined SPI pins.
Table 18-1. SPI Pin Overrides
(1)
Pin Direction, Master SPI Direction, Slave SPI
MOSI User Defined Input
MISO Input User Defined
SCK User Defined Input
SS
User Defined Input