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14.2
Configuration
The 8/10-bit A/D converter is made up of the following 11 blocks.
• A/D control status registers (ADCS)
• A/D channel control register (ADCH)
• A/D mode setting register (ADMD)
• A/D data register (ADCD)
• Clock selector (input clock selector for activation of A/D conversion)
• Decoder
• Analog channel selector
• Sample hold circuit
• D/A converter
• Comparator
• Control circuit
■ Block Diagram of 8/10-bit A/D Converter
AN10,AN8,AN0
AN11,AN9,AN1
AN2
AN3
AN4
AN5
AN6
AN7
Figure 14.2-1 Block Diagram of 8/10-bit A/D Converter
MPX
*1
Input
circuit
Sample & hold circuit
Multifunctional timer
16-bit reload timer
External pin trigger
CHAPTER 14 8/10-BIT A/D CONVERTER
AVRH1
AVRH2
AV
CC
D/A converter
Sequential compare
register
Comparator
A/D data register
A/D channel control register
A/D mode setting register
A/D control status register
*2
1
Operation clock
Prescaler
AVRL
325
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