AT90PWM2B-16SE ATMEL [ATMEL Corporation], AT90PWM2B-16SE Datasheet - Page 173

• Manufacturer Part Number: AT90PWM2B-16SE
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

17. Serial Peripheral Interface – SPI
17.1
4317J–AVR–08/10
Features
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
AT90PWM2/2B/3/3B and peripheral devices or between several AVR devices.
The AT90PWM2/2B/3/3B SPI includes the following features:
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Figure 17-1. SPI Block Diagram
Note:
The interconnection between Master and Slave CPUs with SPI is shown in
tem 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. Master and
Slave prepare the data to be sent in their respective shift Registers, and the Master generates
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
clk
Figure 3-1 on page
IO
(1)
3, and
Table 11-3 on page 68
AT90PWM2/3/2B/3B
for SPI pin placement.
Figure
17-2. The sys-
SPIPS
SS_A
MISO
MISO
_A
MOSI
MOSI
_A
SCK
_A
173
SCK
SS