atmega32u4-16mu ATMEL Corporation, atmega32u4-16mu Datasheet - Page 323
atmega32u4-16mu
Manufacturer Part Number
atmega32u4-16mu
Description
Atmega32u4 8-bit Avr Microcontroller With 32k Bytes Of Isp Flash And Usb Controller
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA32U4-16MU.pdf
(431 pages)
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25.8
7766A–AVR–03/08
ADC Conversion Result
Figure 25-13. Integral Non-linearity (INL)
Figure 25-14. Differential Non-linearity (DNL)
After the conversion is complete (ADIF is high), the conversion result can be found in the ADC
Result Registers (ADCL, ADCH).
For single ended conversion, the result is:
• Differential Non-linearity (DNL): The maximum deviation of the actual code width (the interval
• Quantization Error: Due to the quantization of the input voltage into a finite number of codes,
• Absolute Accuracy: The maximum deviation of an actual (unadjusted) transition compared to
between two adjacent transitions) from the ideal code width (1 LSB). Ideal value: 0 LSB.
a range of input voltages (1 LSB wide) will code to the same value. Always ± 0.5 LSB.
an ideal transition for any code. This is the compound effect of offset, gain error, differential
error, non-linearity, and quantization error. Ideal value: ± 0.5 LSB.
Output Code
Output Code
0x000
0x3FF
0
1 LSB
V
V
REF
REF
ATmega32U4
Input Voltage
Input Voltage
Ideal ADC
Actual ADC
323
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