27.8.4 ADCH – ADC Data Register High (ADLAR=0)

When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When addressing I/O Registers as data space using LD and ST instructions, 0x20 must be added to these offset addresses.

Name: ADCH
Offset: 0x05
Reset: 0x00
Property: When addressing I/O Registers as data space the offset address is 0x25

Bit 76543210 
       ADC9ADC8 
Access RR 
Reset 00 

Bit 1 – ADC9 ADC Conversion Result

Refer to ADCL.

Bit 0 – ADC8 ADC Conversion Result