MC68HC711xxxx Motorola, MC68HC711xxxx Datasheet - Page 68

• Manufacturer Part Number: MC68HC711xxxx
• Description: Microcontrollers
• Manufacturer: Motorola

Analog-to-Digital (A/D) Converter
3.6 Single-Channel Operation
3.7 Multiple-Channel Operation
Data Sheet
68
The two types of single-channel operation are:
The two types of multiple-channel operation are:
1. When SCAN = 0, the single selected channel is converted four consecutive
2. When SCAN = 1, conversions continue to be performed on the selected
1. When SCAN = 0, a selected group of four channels is converted one time
2. When SCAN = 1, conversions continue to be performed on the selected
times. The first result is stored in A/D result register 1 (ADR1), and the fourth
result is stored in ADR4. After the fourth conversion is complete, all
conversion activity is halted until a new conversion command is written to
the ADCTL register.
channel with the fifth conversion being stored in register ADR1 (overwriting
the first conversion result), the sixth conversion overwriting ADR2, and so
on.
each. The first result is stored in A/D result register 1 (ADR1), and the fourth
result is stored in ADR4. After the fourth conversion is complete, all
conversion activity is halted until a new conversion command is written to
the ADCTL register.
group of channels with the fifth conversion being stored in register ADR1
(replacing the earlier conversion result for the first channel in the group), the
sixth conversion overwriting ADR2, and so on.
1. Used for factory testing
Analog-to-Digital (A/D) Converter
Table 3-1. Converter Channel Assignments
Channel
Number
9 – 12
13
14
15
16
1
2
3
4
5
6
7
8
Reserved
Reserved
(V
Channel
Signal
V
V
RH
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
RH
RL
)/2
(1)
(1)
(1)
(1)
Result in ADRx
if MULT = 1
ADR1
ADR2
ADR3
ADR4
ADR1
ADR2
ADR3
ADR4
ADR1
ADR2
ADR3
ADR4
M68HC11E Family — Rev. 5
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MOTOROLA