Rainbow-electronics ATmega161L Manual do Utilizador Página 63

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ATmega161(L)
1228CAVR08/02
Serial Peripheral
Interface SPI
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer
between the ATmega161 and peripheral devices or between several AVR devices. The
ATmega161 SPI features include the following:
Full-duplex, 3-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Seven Programmable Bit Rates
End-of-Transmission Interrupt Flag
Write Collision Flag Protection
Wake-up from Idle Mode (Slave Mode Only)
Double-speed (CK/2) Master SPI Mode
Figure 40. SPI Block Diagram
SPI2X
SPI2X
DIVIDER
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