ATmega64C1 Automotive Atmel Corporation, ATmega64C1 Automotive Datasheet - Page 248

• Manufacturer Part Number: ATmega64C1 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega64C1 Automotive

• Flash (kbytes): 64 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 27
• Ext Interrupts: 27
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Uart: 1
• Can: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 125
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 1
• Dac Resolution (bits): 10
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• 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: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

248
Atmel ATmega16/32/64/M1/C1
• Bit 6 – ISRCEN: Current Source Enable
Set this bit to source a 100µA current to the AREF pin.
Clear this bit to use AREF pin as Analog Reference pin.
• Bit 5 – AREFEN: Analog Reference pin Enable
Set this bit to connect the internal AREF circuit to the AREF pin.
Clear this bit to disconnect the internal AREF circuit from the AREF pin.
• Bit 4 – Res: Reserved Bit
This bit is unused bit in the ATmega16/32/64/M1/C1, and will always read as zero.
• Bit 3, 2, 1, 0– ADTS3:ADTS0: ADC Auto Trigger Source Selection Bits
These bits are only necessary in case the ADC works in auto trigger mode. It means if ADATE
bit in ADCSRA register is set.
In accordance with the Table 18-7, these 3 bits select the interrupt event which will generate
the trigger of the start of conversion. The start of conversion will be generated by the rising
edge of the selected interrupt flag whether the interrupt is enabled or not. In case of trig on
PSCnASY event, there is no flag. So in this case a conversion will start each time the trig
event appears and the previous conversion is completed..
Table 18-7.
ADTS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
ADC Auto Trigger Source Selection
ADTS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
ADTS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
ADTS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Description
Free Running Mode
External Interrupt Request 0
Timer/Counter0 Compare Match
Timer/Counter0 Overflow
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter1 Capture Event
PSC Module 0 Synchronization Signal
PSC Module 1 Synchronization Signal
PSC Module 2 Synchronization Signal
Analog comparator 0
Analog comparator 1
Analog comparator 2
Analog comparator 3
Reserved
Reserved
7647G–AVR–09/11