s908gz60cfa Freescale Semiconductor, Inc, s908gz60cfa Datasheet - Page 70

• Manufacturer Part Number: s908gz60cfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
3.8.2 ADC Data Register High and Data Register Low
3.8.2.1 Left Justified Mode
In left justified mode, the ADRH register holds the eight MSBs of the
10-bit result. The ADRL register holds the two LSBs of the 10-bit result. All other bits read as 0. ADRH
and ADRL are updated each time an ADC single channel conversion completes. Reading ADRH latches
the contents of ADRL until ADRL is read. All subsequent results will be lost until the ADRH and ADRL
reads are completed.
3.8.2.2 Right Justified Mode
In right justified mode, the ADRH register holds the two MSBs of the
10-bit result. All other bits read as 0. The ADRL register holds the eight LSBs of the 10-bit result. ADRH
and ADRL are updated each time an ADC single channel conversion completes. Reading ADRH latches
the contents of ADRL until ADRL is read. All subsequent results will be lost until the ADRH and ADRL
reads are completed.
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Address:
Address:
Address:
Address:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
Figure 3-5. ADC Data Register High (ADRH) and Low (ADRL)
Figure 3-6. ADC Data Register High (ADRH) and Low (ADRL)
$003D
$003E
$003D
$003E
Bit 7
AD9
AD1
Bit 7
AD7
0
= Unimplemented
= Unimplemented
AD8
AD0
AD6
6
6
0
AD7
AD5
5
0
5
0
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
AD6
AD4
4
0
4
0
AD5
AD3
3
0
3
0
AD4
AD2
2
0
2
0
AD3
AD9
AD1
1
0
1
Freescale Semiconductor
ADRH
ADRH
ADRL
ADRL
Bit 0
AD2
Bit 0
AD8
AD0
0