ATMEGA161-8AI Atmel, ATMEGA161-8AI Datasheet - Page 63

• Manufacturer Part Number: ATMEGA161-8AI
• Description: IC AVR MCU 16K 8MHZ IND 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161-8AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATMEGA1618AI

Serial Peripheral
Interface – SPI
1228D–AVR–02/07
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:
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Figure 40. SPI Block Diagram
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
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DIVIDER
ATmega161(L)
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