mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 369

• Manufacturer Part Number: mc68hc908mr24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

19.8.4 ADC Clock Register
MC68HC908MR24 — Rev. 4.1
Freescale Semiconductor
Address:
Address:
In 8-bit mode, this 8-bit result register holds the eight MSBs of the 10-bit
result. This register is updated each time an ADC conversion completes.
In 8-bit mode, this register contains no interlocking with ADRH.
This register selects the clock frequency for the ADC, selecting between
modes of operation.
ADIV2:ADIV0 — ADC Clock Prescaler Bits
Reset:
Reset:
Read:
Read:
Write:
Write:
ADIV2, ADIV1, and ADIV0 form a 3-bit field which selects the divide
ratio used by the ADC to generate the internal ADC clock.
Table 19-2
Figure 19-8. ADC Data Register Low (ADRL) 8-Bit Mode
ADIV2
$0042
$0043
Bit 7
AD9
Bit 7
Analog-to-Digital Converter (ADC)
R
R
R
0
Figure 19-9. ADC Clock Register (ADCLK)
shows the available clock configurations.
= Reserved
= Reserved
ADIV1
AD8
R
6
6
1
ADIV0
AD7
R
5
5
1
ADICLK
Unaffected by reset
AD6
R
4
4
1
MODE1
AD5
R
3
3
0
Analog-to-Digital Converter (ADC)
MODE0
AD4
R
2
2
0
Advance Information
AD3
R
1
1
0
0
Bit 0
Bit 0
AD2
R
R
0
0
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