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M68HC08 Datasheet(PDF) 160 Page - Freescale Semiconductor, Inc

Part # M68HC08
Description  Microcontrollers
PDF  288 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 160 Page - Freescale Semiconductor, Inc

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Analog-to-Digital Converter (ADC)
Data Sheet
MC68HC908BD48 — Rev. 2.1
160
Analog-to-Digital Converter (ADC)
Freescale Semiconductor
12.8.2 ADC Data Register
One 8-bit result register is provided. This register is updated each time
an ADC conversion completes.
Table 12-2. MUX Channel Select
ADCH4
ADCH3
ADCH2
ADCH1
ADCH0
ADC Channel
Input Select
000
00
ADC0
PTC0
000
01
ADC1
PTC1
000
10
ADC2
PTC2
000
11
ADC3
PTC3
001
00
ADC4
PTC4
001
01
ADC5
PTC5
001
10
Unused
(see Note 1)
::::
:
—
110
10
110
11
—
Reserved
11
1
0
0
—
Unused
11
1
0
1
VDDA (see Note 2)
11
1
1
0
VSSA (see Note 2)
11
1
1
1
ADC power off
NOTES:
1. If any unused channels are selected, the resulting ADC conversion will be unknown.
2. The voltage levels supplied from internal reference nodes as specified in the table are used to verify the
operation of the ADC converter both in production test and for user applications.
Address:
$005E
Bit 7
654321
Bit 0
Read:
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
Write:
Reset:
Indeterminate after Reset
= Unimplemented
Figure 12-3. ADC Data Register (ADR)



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