ATmega168 Atmel Corporation, ATmega168 Datasheet - Page 310

• Manufacturer Part Number: ATmega168
• Manufacturer: Atmel Corporation

Specifications of ATmega168

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

2545T–AVR–05/11
Figure 29-5. SPI interface timing requirements (master mode).
Figure 29-6. SPI interface timing requirements (slave mode).
(Data output)
(Data output)
(Data input)
(Data input)
(CPOL = 0)
(CPOL = 1)
(CPOL = 0)
(CPOL = 1)
MISO
MOSI
MOSI
MISO
SCK
SCK
SCK
SCK
SS
SS
9
13
6
4
MSB
MSB
5
MSB
MSB
14
15
7
...
...
...
...
ATmega48/88/168
11
2
LSB
10
1
LSB
LSB
LSB
11
2
12
3
16
8
X
17
310