s908ey8ad4cfjer Freescale Semiconductor, Inc, s908ey8ad4cfjer Datasheet - Page 51

• Manufacturer Part Number: s908ey8ad4cfjer
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

3.7.2 ADC Data Register High (ADRH) and Data Register Low (ADRL)
3.7.2.1 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.
Until ADRL is read, all subsequent results will be lost.
3.7.2.2 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. Until ADRL is read, all subsequent ADC results will be lost.
Freescale Semiconductor
Address:
Address:
Address:
Address:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
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
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
= 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
ADRH
ADRH
ADRL
ADRL
Bit 0
AD2
Bit 0
AD8
AD0
0
I/O Registers
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