A000047 Arduino, A000047 Datasheet - Page 195
A000047
Manufacturer Part Number
A000047
Description
MCU, MPU & DSP Development Tools Mega2560
Manufacturer
Arduino
Series
-r
Type
MCUr
Specifications of A000047
Processor To Be Evaluated
ATmega2560
Interface Type
USB, I2C, SPI
Dimensions
4 in x 2.1 in
Operating Supply Voltage
5 V
Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega2560
- Current page: 195 of 444
- Download datasheet (10Mb)
20. SPI – Serial Peripheral Interface
2549M–AVR–09/10
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATmega640/1280/1281/2560/2561 and peripheral devices or between several AVR devices.
The ATmega640/1280/1281/2560/2561 SPI includes the following features:
•
•
•
•
•
•
•
•
USART can also be used in Master SPI mode, see
The Power Reduction SPI bit, PRSPI, in
page 50 must be written to zero to enable SPI module.
Figure 20-1. SPI Block Diagram
Note:
The interconnection between Master and Slave CPUs with SPI is shown in
196. The system consists of two shift Registers, and a Master clock generator. The SPI Master
initiates the communication cycle when pulling low the Slave Select SS pin of the desired Slave.
Full-duplex, Three-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
Double Speed (CK/2) Master SPI Mode
1. Refer to
/2/4/8/16/32/64/128
DIVIDER
Figure 1-1 on page
ATmega640/1280/1281/2560/2561
(1)
2, and
“PRR0 – Power Reduction Register 0” on page 56
Table 12-6 on page 79
“USART in SPI Mode” on page
for SPI pin placement.
Figure 20-2 on page
232.
195
on
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