ATmega8 Atmel Corporation, ATmega8 Datasheet - Page 241

• Manufacturer Part Number: ATmega8
• Manufacturer: Atmel Corporation

Specifications of ATmega8

• Flash (kbytes): 8 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: 23
• Ext Interrupts: 2
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• 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: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 1
• Pwm Channels: 3
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

ADC Characteristics
Table 103. ADC Characteristics
Notes:
2486Z–AVR–02/11
Symbol
AV
R
V
R
V
V
REF
REF
AIN
INT
IN
CC
1. Values are guidelines only
2. Minimum for
3. Maximum for
4. Maximum conversion time is 1/50kHz × 25 = 0.5ms
Parameter
Resolution
Absolute accuracy
(including INL, DNL,
Quantization Error, Gain,
and Offset Error)
Integral Non-linearity (INL)
Differential Non-linearity
(DNL)
Gain Error
Offset Error
Conversion Time
Clock Frequency
Analog Supply Voltage
Reference Voltage
Input voltage
Input bandwidth
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
AV
AV
CC
CC
(4)
is 2.7V
is 5.5V
Condition
Single Ended Conversion
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 1MHz
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 200kHz
Free Running Conversion
REF
REF
REF
REF
REF
REF
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
CC
CC
CC
CC
CC
CC
= 4V
= 4V
= 4V
= 4V
= 4V
= 4V
V
CC
Min
GND
2.0
2.3
13
50
55
- 0.3
(1)
(2)
Typ
1.75
0.75
38.5
2.56
100
0.5
10
32
3
1
1
(1)
V
CC
ATmega8(L)
Max
AV
1000
V
260
2.9
+ 0.3
REF
CC
(1)
(3)
Units
LSB
kHz
kHz
Bits
MΩ
kΩ
µs
V
V
241