ATMEGA168PA-PU Atmel, ATMEGA168PA-PU Datasheet - Page 167

• Manufacturer Part Number: ATMEGA168PA-PU
• Description: MCU, 8BIT, AVR, 16K FLASH, 28PDIP
• Manufacturer: Atmel

Specifications of ATMEGA168PA-PU

• Controller Family/series: Atmega
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 20MHz
• No.: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 16KB
• Oscillator Type: External, Internal
• Rohs Compliant: Yes

18. SPI – Serial Peripheral Interface
18.1
18.2
8271C–AVR–08/10
Features
Overview
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The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P and peripheral devices or between sev-
eral AVR devices.
The USART can also be used in Master SPI mode, see “USART in SPI Mode” on page 205. The
PRSPI bit in
module.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
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
”Minimizing Power Consumption” on page 42
must be written to zero to enable SPI
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