ATmega168 Automotive Atmel Corporation, ATmega168 Automotive Datasheet - Page 301

• Manufacturer Part Number: ATmega168 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega168 Automotive

• Flash (kbytes): 16 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 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 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 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

26.5
26.6
26.7
7530I–AVR–02/10
Maximum Speed vs. V
LIN Re-synchronization algorithm
Synchronization Algorithm
Maximum frequency is dependent on V
V
Figure 26-2. Maximum Frequency vs. V
The possibility to change the value of OSCCAL during the Oscillator operation allows for in-situ
calibration of the slave node to entering Master frames. The principle of operation is to measure
the TBit during the SYNCH Byte and to change the calibration value of OSCCAL to recover from
local frequency drifts due to local voltage or temperature deviation. The algorithm used for the
synchronization of the internal RC oscillator is depicted in Figure 26-3
CC
curve is linear between 2.7V < V
CC
16 MHz
8 MHz
2.7V
CC
ATmega48/88/168 Automotive
CC.
< 4.5V.
Safe Operating Area
CC
As shown in
, ATmega48/88/168
Figure
4.5V
26-2, the Maximum Frequency vs.
5.5V
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