mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 248

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (ADC)
15.8.4 ADC Auto-Scan Mode Data Registers (ADRL1–ADRL3)
15.8.5 ADC Auto-Scan Control Register (ADASCR)
Data Sheet
248
Address: ADRL1, $005B; ADRL2, $005C; and ADRL3, $005D
Address:
The ADC data registers 1 to 3 (ADRL1–ADRL3), are 8-bit registers for
conversion results in 8-bit truncated mode, for channels ATD1 to ATD3,
when the ADC is operating in auto-scan mode (MODE[1:0] = 00).
The ADC auto-scan control register (ADASCR) enables and controls the
ADC auto-scan function.
AUTO[1:0] — Auto-scan Mode Channel Select Bits
Reset:
Reset:
Read:
Read:
Write:
Write:
AUTO1 and AUTO0 form a 2-bit field which is used to define the
number of auto-scan channels used when in auto-scan mode.
Reset clears these bits.
Figure 15-9. ADC Data Register Low 1 to 3 (ADRL1–ADRL3)
Figure 15-10. ADC Scan Control Register (ADASCR)
$005E
AD9
Analog-to-Digital Converter (ADC)
R
R
0
0
0
Table 15-4. Auto-scan Mode Channel Select
AUTO1
= Reserved
= Unimplemented
0
0
1
1
AD8
R
0
0
0
AUTO0
AD7
R
0
0
0
0
1
0
1
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
AD6
ATD0 only
ATD0 to ATD1
ATD0 to ATD2
ATD0 to ATD3
R
0
0
0
Auto-Scan Channels
AD5
R
R
0
0
0
= Reserved
AUTO1
AD4
Freescale Semiconductor
R
0
0
AUTO0
AD3
R
0
0
ASCAN
AD2
R
0
0