ATmega88 Atmel Corporation, ATmega88 Datasheet - Page 253

• Manufacturer Part Number: ATmega88
• Manufacturer: Atmel Corporation

Specifications of ATmega88

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• 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 24-10. Offset error.
• Gain error: After adjusting for offset, the gain error is found as the deviation of the last transition
Figure 24-11. Gain error.
• Integral Non-linearity (INL): After adjusting for offset and gain error, the INL is the maximum
(0x3FE to 0x3FF) compared to the ideal transition (at 1.5LSB below maximum). Ideal value:
0LSB
deviation of an actual transition compared to an ideal transition for any code. Ideal value: 0LSB
Output code
Output code
Offset
error
Gain
error
V
V
REF
REF
ATmega48/88/168
Input voltage
Input voltage
Ideal ADC
Actual ADC
Ideal ADC
Actual ADC
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