mc908jl16 Freescale Semiconductor, Inc, mc908jl16 Datasheet - Page 134

• Manufacturer Part Number: mc908jl16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
9.8.2 ADC10 Result High Register (ADRH)
This register holds the MSB’s of the result and is updated each time a conversion completes. All other
bits read as 0s. Reading ADRH prevents the ADC10 from transferring subsequent conversion results into
the results registers until ADRL is read. If ADRL is not read until the after next conversion is completed,
then the intermediate conversion results will be lost. In 8-bit mode, this register contains no interlocking
with ADRL.
9.8.3 ADC10 Result Low Register (ADRL)
This register holds the LSB’s of the result. This register is updated each time a conversion completes.
Reading ADRH prevents the ADC10 from transferring subsequent conversion results into the results
registers until ADRL is read. If ADRL is not read until the after next conversion is completed, then the
intermediate conversion results will be lost. In 8-bit mode, there is no interlocking with ADRH.
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Address:
Address:
Address:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
Figure 9-5. ADC10 Data Register High (ADRH), 10-Bit Mode
Figure 9-4. ADC10 Data Register High (ADRH), 8-Bit Mode
$003D
$003D
$003E
Bit 7
Bit 7
Bit 7
AD7
R
R
R
R
R
R
0
0
0
0
0
Figure 9-6. ADC10 Data Register Low (ADRL)
= Reserved
= Reserved
= Reserved
AD6
R
R
R
6
0
0
6
0
0
6
0
MC68HC908JL16 Data Sheet, Rev. 1.1
AD5
R
R
R
5
0
0
5
0
0
5
0
AD4
R
R
R
4
0
0
4
0
0
4
0
AD3
R
R
R
3
0
0
3
0
0
3
0
AD2
R
R
R
2
0
0
2
0
0
2
0
AD9
AD1
R
R
R
1
0
0
1
0
1
0
Freescale Semiconductor
Bit 0
Bit 0
AD8
Bit 0
AD0
R
R
R
0
0
0
0