ATmega325PA Atmel Corporation, ATmega325PA Datasheet - Page 161

• Manufacturer Part Number: ATmega325PA
• Manufacturer: Atmel Corporation

8285D–AVR–06/11
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
Table 19-1.
Note:
The following code examples show how to initialize the SPI as a Master and how to perform a
simple transmission. DDR_SPI in the examples must be replaced by the actual Data Direction
Register controlling the SPI pins. DD_MOSI, DD_MISO and DD_SCK must be replaced by the
actual data direction bits for these pins. E.g. if MOSI is placed on pin PB5, replace DD_MOSI
with DDB5 and DDR_SPI with DDRB.
MOSI
MISO
SCK
Pin
SS
1. See
direction of the user defined SPI pins.
SPI Pin Overrides
”Alternate Functions of Port B” on page 76
Direction, Master SPI
User Defined
Input
User Defined
User Defined
(1)
for a detailed description of how to define the
Direction, Slave SPI
Input
User Defined
Input
Input
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